From a7bf099cb1694157e2085b9cc3d1e81dc687e2c7 Mon Sep 17 00:00:00 2001
From: Servo WPT Sync <32481905+servo-wpt-sync@users.noreply.github.com>
Date: Sat, 25 May 2024 23:58:17 -0400
Subject: [PATCH] Update web-platform-tests to revision
 b'f2cdcb7e9550e74d07ed6cf17bbcb9643aeedb99' (#32381)

---
 .../Blob-methods-from-detached-frame.html.ini |    6 +
 .../FileAPI/blob/Blob-bytes.any.js.ini        |   32 +
 .../color-valid-relative-color.html.ini       |    9 +
 ...riable-in-font-variation-settings.html.ini |    3 +
 .../line-clamp-auto-001.tentative.html.ini    |    2 +
 .../line-clamp-auto-002.tentative.html.ini    |    2 +
 .../line-clamp-auto-003.tentative.html.ini    |    2 +
 .../line-clamp-auto-004.tentative.html.ini    |    2 +
 .../line-clamp-auto-005.tentative.html.ini    |    2 +
 .../line-clamp-auto-009.tentative.html.ini    |    2 +
 .../line-clamp-auto-010.tentative.html.ini    |    2 +
 .../line-clamp-auto-011.tentative.html.ini    |    2 +
 .../line-clamp-auto-013.tentative.html.ini    |    2 +
 .../line-clamp-auto-014.tentative.html.ini    |    2 +
 .../line-clamp-auto-015.tentative.html.ini    |    2 +
 .../line-clamp-auto-016.tentative.html.ini    |    2 +
 ...scroll-markers-computed.tentative.html.ini |   27 -
 .../scroll-markers-valid.tentative.html.ini   |   21 -
 .../dynamic-available-size-iframe.html.ini    |    2 +
 .../transform-important.html.ini              |    3 +
 ...ze-height-interpolation.tentative.html.ini |  858 +++++++
 ...interpolation-expansion.tentative.html.ini |   21 +
 ...ize-width-interpolation.tentative.html.ini |  120 +
 .../calc-size/calc-size-typed-om.html.ini     |   63 +
 .../progress-computed.tentative.html.ini      |    3 +
 .../css/cssom-view/idlharness.html.ini        |    9 +
 .../backdrop-filter-important.html.ini        |    3 +
 .../HTMLMediaElement.html.ini                 |    2 -
 .../fetch/api/idlharness.any.js.ini           |   24 +
 ...with-link-element.tentative.https.html.ini |    3 +
 .../empty-iframe-load-event.html.ini          |    6 +
 .../autofocus-dialog.html.ini                 |    3 +-
 .../iframe_sandbox_popups_escaping-1.html.ini |    1 -
 .../iframe_sandbox_popups_escaping-2.html.ini |    2 +-
 ...rame_sandbox_popups_nonescaping-1.html.ini |    3 +-
 ...rame_sandbox_popups_nonescaping-2.html.ini |    3 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |    3 +-
 ...elect-open-invalidation.tentative.html.ini |    2 +
 .../bounded-sizes.tentative.html.ini          |    3 +
 ...ative-offset-and-margin.tentative.html.ini |    6 +
 .../pseudo-elements-in-div.tentative.html.ini |    2 +
 .../pseudo-elements.tentative.html.ini        |    2 +
 ...chor-inset-rule-display.tentative.html.ini |    2 +
 .../readwrite-readonly.html.ini               |    6 +
 ...nested-context-navigations-iframe.html.ini |   22 -
 .../streams/readable-streams/from.any.js.ini  |    6 +
 .../webvtt/api/VTTCue/region.html.ini         |    4 -
 .../workers/WorkerGlobalScope-close.html.ini  |    3 -
 .../Blob-methods-from-detached-frame.html.ini |    6 +
 .../meta/FileAPI/blob/Blob-bytes.any.js.ini   |   32 +
 tests/wpt/meta/MANIFEST.json                  | 2044 ++++++++++++-----
 .../color-valid-relative-color.html.ini       |    9 +
 ...riable-in-font-variation-settings.html.ini |    3 +
 .../css/css-lists/counter-important.html.ini  |    3 +
 .../line-clamp-auto-001.tentative.html.ini    |    2 +
 .../line-clamp-auto-002.tentative.html.ini    |    2 +
 .../line-clamp-auto-003.tentative.html.ini    |    2 +
 .../line-clamp-auto-004.tentative.html.ini    |    2 +
 .../line-clamp-auto-005.tentative.html.ini    |    2 +
 .../line-clamp-auto-009.tentative.html.ini    |    2 +
 .../line-clamp-auto-011.tentative.html.ini    |    2 +
 .../line-clamp-auto-013.tentative.html.ini    |    2 +
 .../line-clamp-auto-014.tentative.html.ini    |    2 +
 .../line-clamp-auto-015.tentative.html.ini    |    2 +
 .../line-clamp-auto-016.tentative.html.ini    |    2 +
 ...scroll-markers-computed.tentative.html.ini |   27 -
 .../scroll-markers-valid.tentative.html.ini   |   21 -
 .../transform-important.html.ini              |    3 +
 ...ze-height-interpolation.tentative.html.ini |  858 +++++++
 ...interpolation-expansion.tentative.html.ini |   21 +
 ...ize-width-interpolation.tentative.html.ini |  120 +
 .../calc-size/calc-size-typed-om.html.ini     |   63 +
 .../progress-computed.tentative.html.ini      |    3 +
 .../meta/css/cssom-view/idlharness.html.ini   |    9 +
 .../backdrop-filter-important.html.ini        |    3 +
 .../wpt/meta/fetch/api/idlharness.any.js.ini  |   24 +
 ...with-link-element.tentative.https.html.ini |    3 +
 ...-img-environment-change.https.sub.html.ini |    6 +-
 ...tion-unload-cross-origin.sub.window.js.ini |    3 -
 ...avigation-unload-same-origin.window.js.ini |    3 +
 .../traverse_the_history_5.html.ini           |    3 +
 ...nitiator-is-not-opener.https.window.js.ini |    1 -
 .../autofocus-dialog.html.ini                 |    3 +-
 .../iframe_sandbox_popups_escaping-1.html.ini |    2 +-
 ...rame_sandbox_popups_nonescaping-2.html.ini |    3 +-
 ...ivation-sticky.tentative.sub.window.js.ini |    3 +-
 ...elect-open-invalidation.tentative.html.ini |    2 +
 .../bounded-sizes.tentative.html.ini          |    3 +
 ...ative-offset-and-margin.tentative.html.ini |    6 +
 .../pseudo-elements-in-div.tentative.html.ini |    2 +
 .../pseudo-elements.tentative.html.ini        |    2 +
 ...chor-inset-rule-display.tentative.html.ini |    2 +
 .../readwrite-readonly.html.ini               |    6 +
 .../streams/readable-streams/from.any.js.ini  |    6 +
 .../Blob-methods-from-detached-frame.html     |    9 +
 .../wpt/tests/FileAPI/blob/Blob-bytes.any.js  |   45 +
 .../sec-ch-width-auto-sizes-002.https.html    |   34 -
 ...=> sec-ch-width-auto-sizes-img.https.html} |    2 +-
 ...ec-ch-width-auto-sizes-picture.https.html} |    1 -
 .../fedcm-opaque-rp-origin.https.html         |   26 +
 .../fedcm-opaque-rp-origin.https.html.headers |    1 +
 .../support/fedcm-helper.sub.js.headers       |    1 +
 .../anchor-scope-basic.html                   |  254 ++
 .../anchor-scope-dynamic.html                 |  132 ++
 .../anchor-scope-shadow.tentative.html        |   59 +
 .../grid-anchor-center-crash.html             |    5 +
 .../parsing/anchor-scope-computed.html        |   20 +
 .../parsing/anchor-scope-parsing.html         |   25 +
 .../position-try-invalid-anchor-crash.html    |    6 +
 .../color-computed-relative-color.html        |   42 +-
 .../parsing/color-valid-relative-color.html   |   22 +-
 .../relative-currentcolor-rgb-02.html         |    2 +-
 ...content-visibility-auto-state-changed.html |   31 +
 .../display-contents-role-and-label.html      |    6 +-
 .../css-fonts/variable-in-feature-crash.html  |   11 +
 .../variable-in-font-variation-settings.html  |   13 +
 .../tests/css/css-grid/grid-important.html    |   17 +
 .../dynamic-subgridded-item-height.html       |   37 +
 .../text-box-trim-accumulation-001.html       |   32 +
 .../text-box-trim-dynamic-001-ref.html        |   15 +
 .../text-box-trim-dynamic-001.html            |   27 +
 .../text-box-trim-dynamic-002.html            |   27 +
 .../text-box-trim-end-001-ref.html            |   37 +
 .../text-box-trim/text-box-trim-end-001.html  |   41 +
 .../text-box-trim-float-clear-br-001-ref.html |   26 +
 .../text-box-trim-float-clear-br-001.html     |   31 +
 ...x-trim-half-leading-block-box-001-ref.html |    4 +-
 ...t-box-trim-half-leading-block-box-001.html |    7 +-
 ...t-box-trim-half-leading-block-box-003.html |   22 +
 ...t-box-trim-initial-letter-end-001-ref.html |   24 +
 .../text-box-trim-initial-letter-end-001.html |   26 +
 .../text-box-trim-multicol-001-ref.html       |   30 +
 .../text-box-trim-multicol-001.html           |   32 +
 .../text-box-trim-multicol-002.html           |   34 +
 .../text-box-trim-ruby-end-001.html           |   27 +
 .../text-box-trim-ruby-start-001-ref.html     |    1 +
 .../text-box-trim-ruby-start-001.html         |    1 +
 .../text-box-trim-tall-line-001-ref.html      |    2 +-
 .../text-box-trim-tall-line-001.html          |    2 +-
 .../css/css-lists/counter-important.html      |   17 +
 .../line-clamp-auto-001.tentative.html        |   23 +
 .../line-clamp-auto-002.tentative.html        |   25 +
 .../line-clamp-auto-003.tentative.html        |   26 +
 .../line-clamp-auto-004.tentative.html        |   23 +
 .../line-clamp-auto-005.tentative.html        |   23 +
 .../line-clamp-auto-006.tentative.html        |   21 +
 .../line-clamp-auto-007.tentative.html        |   21 +
 .../line-clamp-auto-008.tentative.html        |   20 +
 .../line-clamp-auto-009.tentative.html        |   24 +
 .../line-clamp-auto-010.tentative.html        |   22 +
 .../line-clamp-auto-011.tentative.html        |   23 +
 .../line-clamp-auto-012.tentative.html        |   21 +
 .../line-clamp-auto-013.tentative.html        |   24 +
 .../line-clamp-auto-014.tentative.html        |   24 +
 .../line-clamp-auto-015.tentative.html        |   33 +
 .../line-clamp-auto-016.tentative.html        |   33 +
 .../scroll-markers-computed.tentative.html    |   41 -
 .../scroll-markers-invalid.tentative.html     |   24 -
 .../scroll-markers-valid.tentative.html       |   27 -
 .../reference/line-clamp-auto-002-ref.html    |   19 +
 .../reference/line-clamp-auto-005-ref.html    |   16 +
 .../reference/line-clamp-auto-011-ref.html    |   12 +
 .../reference/line-clamp-auto-016-ref.html    |   25 +
 .../background-image-only-for-print-ref.html  |    5 +
 .../background-image-only-for-print.html      |   27 +
 .../css/css-position/sticky/WEB_FEATURES.yml  |    3 +
 .../at-property-animation.html                |   39 +
 .../consume-color-contrast-crash.html         |    6 +
 .../break-within-bases/basic-ref.html         |   17 +-
 .../css-ruby/break-within-bases/basic.html    |   18 +-
 .../break-within-bases/text-wrap-ref.html     |   11 +
 .../text-wrap.tentative.html                  |   29 +
 .../ruby-inlinize-recursive-simple-ref.html   |   12 +
 .../ruby-inlinize-recursive-simple.html       |   17 +
 .../css/css-ruby/ruby-no-transform-ref.html   |    2 +
 .../tests/css/css-ruby/ruby-no-transform.html |    2 +
 .../css/css-scroll-snap-2/resources/common.js |   28 +-
 .../resources/user-scroll-common.js           |   12 +-
 ...change-after-layout-change.tentative.html} |   34 +-
 ...ange-on-interrupted-scroll.tentative.html} |   10 +-
 ...n-programmatic-root-scroll.tentative.html} |   26 +-
 ...nge-on-programmatic-scroll.tentative.html} |   26 +-
 ...change-on-user-root-scroll.tentative.html} |   28 +-
 ...lsnapchange-on-user-scroll.tentative.html} |   28 +-
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 ...-with-proximity-strictness.tentative.html} |   18 +-
 ...anging-after-layout-change.tentative.html} |   22 +-
 ...n-programmatic-root-scroll.tentative.html} |   14 +-
 ...ing-on-programmatic-scroll.tentative.html} |   14 +-
 ...anging-on-user-root-scroll.tentative.html} |   38 +-
 ...napchanging-on-user-scroll.tentative.html} |   36 +-
 ...p-events-with-pseudo-target.tentative.html |    8 +-
 ...apevents-at-document-bubble-to-window.html |   30 +-
 .../css-transforms/transform-important.html   |    3 +-
 .../properties/anchor-scope.html              |   22 +
 ...c-size-height-interpolation.tentative.html |  115 +-
 ...ize-interpolation-expansion.tentative.html |  119 +
 ...lc-size-width-interpolation.tentative.html |   26 +-
 .../calc-size/calc-size-typed-om.html         |   52 +
 .../progress-computed.tentative.html          |    1 +
 .../paint-holding-in-iframe-ref.html          |   22 +
 .../paint-holding-in-iframe.html              |   43 +
 .../backdrop-filter-important.html            |   17 +
 .../tests/custom-elements/WEB_FEATURES.yml    |   48 +-
 .../custom-element-registry/WEB_FEATURES.yml  |    9 +
 .../htmlconstructor/WEB_FEATURES.yml          |    7 +
 .../custom-elements/parser/WEB_FEATURES.yml   |   17 +
 .../reactions/WEB_FEATURES.yml                |    3 +
 .../customized-builtins/WEB_FEATURES.yml      |    3 +
 .../upgrading/WEB_FEATURES.yml                |   11 +
 ...ate-user-activation-from-opener.https.html |   27 +
 ...agate-user-activation-to-opener.https.html |   26 +
 .../override-to-optional.tentative-ref.html   |   30 -
 .../override-to-optional.tentative.html       |   46 -
 ...verride-to-optional.tentative.html.headers |    1 -
 .../report-only-auto.tentative.html           |    9 -
 .../report-only-auto.tentative.html.headers   |    1 -
 .../report-only-blank.tentative.html          |    9 -
 .../report-only-blank.tentative.html.headers  |    1 -
 .../report-only-block.tentative.html          |    9 -
 .../report-only-block.tentative.html.headers  |    1 -
 .../report-only-fallback.tentative.html       |    9 -
 ...eport-only-fallback.tentative.html.headers |    1 -
 .../report-only-optional.tentative.html       |    9 -
 ...eport-only-optional.tentative.html.headers |    1 -
 .../report-only-swap.tentative.html           |    9 -
 .../report-only-swap.tentative.html.headers   |    1 -
 .../reporting-auto.tentative.html             |    9 -
 .../reporting-auto.tentative.html.headers     |    1 -
 .../reporting-blank.tentative.html            |    9 -
 .../reporting-blank.tentative.html.headers    |    1 -
 .../reporting-block.tentative.html            |    9 -
 .../reporting-block.tentative.html.headers    |    1 -
 .../reporting-fallback.tentative.html         |    9 -
 .../reporting-fallback.tentative.html.headers |    1 -
 .../reporting-optional.tentative.html         |    9 -
 .../reporting-optional.tentative.html.headers |    1 -
 .../reporting-swap.tentative.html             |    9 -
 .../reporting-swap.tentative.html.headers     |    1 -
 .../font-display-reporting-helper.js          |   81 -
 ...es-max-bpp-reporting-onload-tentative.html |   26 -
 ...pp-reporting-onload-tentative.html.headers |    1 -
 ...sy-images-max-bpp-reporting-tentative.html |   27 -
 ...s-max-bpp-reporting-tentative.html.headers |    1 -
 .../oversized-images-reporting-tentative.html |   32 -
 ...ed-images-reporting-tentative.html.headers |    1 -
 .../document-policy/reporting/oversized.jpg   |  Bin 1655 -> 0 bytes
 .../reporting/unoptimized-image.jpg           |  Bin 43999 -> 0 bytes
 tests/wpt/tests/dom/abort/WEB_FEATURES.yml    |    3 +
 .../events/pointer-event-document-move.html   |   29 +
 .../fenced-frame/ancestor-throttle.https.html |   11 +-
 .../fenced-frame/csp-ancestors.https.sub.html |   43 +
 ...-cross-origin-content-initiated.https.html |    2 +-
 ...-cross-origin-nested-urn-iframe.https.html |    2 +-
 ...eport-event-cross-origin-nested.https.html |    2 +-
 ...cross-origin-no-embedder-opt-in.https.html |    2 +-
 ...cross-origin-no-subframe-opt-in.https.html |    2 +-
 ...in-urn-iframe-content-initiated.https.html |    2 +-
 ...n-urn-iframe-no-embedder-opt-in.https.html |    2 +-
 ...n-urn-iframe-no-subframe-opt-in.https.html |    2 +-
 ...t-event-cross-origin-urn-iframe.https.html |    2 +-
 ...fence-report-event-cross-origin.https.html |    2 +-
 ...ce-report-event-sub-fencedframe.https.html |    2 +-
 .../api/response/response-blob-realm.any.js   |    1 +
 ...tionary-decompression.tentative.https.html |    6 +-
 ...tch-with-link-element.tentative.https.html |   17 +-
 ...etch-with-link-header.tentative.https.html |   10 +-
 .../resources/compressed-data.py              |   31 +-
 .../tentative/auction-config.https.window.js  |  108 +-
 .../canvas/element/reset}/WEB_FEATURES.yml    |    2 +-
 ...e.selection-rects-baselines.tentative.html |   12 +-
 ....selection-rects-exceptions.tentative.html |    6 +-
 ...ext.measure.selection-rects.tentative.html |   26 +-
 .../canvas/offscreen/reset/WEB_FEATURES.yml   |    3 +
 ...e.selection-rects-baselines.tentative.html |   12 +-
 ...ection-rects-baselines.tentative.worker.js |   12 +-
 ....selection-rects-exceptions.tentative.html |    6 +-
 ...ction-rects-exceptions.tentative.worker.js |    6 +-
 ...ext.measure.selection-rects.tentative.html |   26 +-
 .../html/canvas/tools/yaml-new/text.yaml      |   44 +-
 .../ascends-to-parent-focusgroup.html         |    6 +-
 ...scend-out-of-non-extending-focusgroup.html |    6 +-
 ...does-not-move-when-axis-not-supported.html |    4 +-
 .../does-not-wrap-in-orthogonal-axis.html     |    4 +-
 ...oves-when-only-current-axis-supported.html |    4 +-
 ...tends-in-orthogonal-axis-complex-case.html |    4 +-
 ...group-that-extends-in-orthogonal-axis.html |    4 +-
 .../horizontal/wraps-in-axis.html             |    4 +-
 .../ascends-to-parent-focusgroup.html         |    6 +-
 ...scend-out-of-non-extending-focusgroup.html |    6 +-
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 ...oves-when-only-current-axis-supported.html |    4 +-
 ...tends-in-orthogonal-axis-complex-case.html |    4 +-
 ...group-that-extends-in-orthogonal-axis.html |    4 +-
 .../vertical/wraps-in-axis.html               |    4 +-
 ...scends-in-horizontal-inner-focusgroup.html |    6 +-
 ...does-not-move-when-axis-not-supported.html |    4 +-
 ...t-wrap-even-when-other-axis-supported.html |    4 +-
 ...oves-when-only-current-axis-supported.html |    4 +-
 ...group-that-extends-in-orthogonal-axis.html |    4 +-
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 ...descends-in-vertical-inner-focusgroup.html |    6 +-
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 ...group-that-extends-in-orthogonal-axis.html |    4 +-
 ...and-skips-orthogonal-inner-focusgroup.html |    4 +-
 .../wraps-in-appropriate-focusgroup.html      |    8 +-
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 .../textarea-scrollbar-sizing-001.html        |   42 +
 .../textarea-scrollbar-sizing-002.html        |   43 +
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 ...-image-display-none-loading-for-print.html |   40 +
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 .../bounded-sizes.tentative.html              |   26 +-
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 .../popovers/resources/popover-styles.css     |    3 +
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 .../images/wpt-logo/wpt-logo-lightblue-bg.svg |   16 +-
 .../images/wpt-logo/wpt-logo-orange-bg.svg    |   16 +-
 .../tests/import-maps/dynamic-integrity.html  |  115 +-
 ...no-referencing-script-integrity-valid.html |    5 +
 .../no-referencing-script-integrity.html      |    5 +
 .../import-maps/nonimport-integrity.html      |   33 +-
 .../tests/import-maps/static-integrity.html   |   24 +-
 .../testdriver/set_permission.https.html.ini  |    4 +-
 .../wpt/tests/interfaces/compute-pressure.idl |    2 +-
 .../tests/interfaces/css-scroll-snap-2.idl    |    5 +
 tests/wpt/tests/interfaces/cssom-view.idl     |    2 +-
 .../tests/interfaces/digital-identities.idl   |    4 +-
 .../wpt/tests/interfaces/encrypted-media.idl  |  142 +-
 tests/wpt/tests/interfaces/fenced-frame.idl   |   11 +-
 tests/wpt/tests/interfaces/fetch.idl          |    1 +
 .../tests/interfaces/mediacapture-streams.idl |   10 +
 .../tests/interfaces/orientation-event.idl    |    2 +-
 .../wpt/tests/interfaces/service-workers.idl  |    2 +-
 tests/wpt/tests/interfaces/turtledove.idl     |    6 +-
 .../webcodecs-av1-codec-registration.idl      |    8 -
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 delete mode 100644 tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html
 delete mode 100644 tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html.headers
 delete mode 100644 tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html
 delete mode 100644 tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html.headers
 delete mode 100644 tests/wpt/tests/document-policy/reporting/oversized.jpg
 delete mode 100644 tests/wpt/tests/document-policy/reporting/unoptimized-image.jpg
 create mode 100644 tests/wpt/tests/dom/events/pointer-event-document-move.html
 create mode 100644 tests/wpt/tests/fenced-frame/csp-ancestors.https.sub.html
 rename tests/wpt/tests/{sanitizer-api => html/canvas/element/reset}/WEB_FEATURES.yml (53%)
 create mode 100644 tests/wpt/tests/html/canvas/offscreen/reset/WEB_FEATURES.yml
 create mode 100644 tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-001.html
 create mode 100644 tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-002.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print.html
 create mode 100644 tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-svg-only-for-print.html
 create mode 100644 tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html
 rename tests/wpt/tests/html/semantics/interactive-elements/the-dialog-element/{dialog-close-via-attribute.html => dialog-close-via-attribute.tentative.html} (100%)
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest.tentative.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div.tentative.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/pseudo-elements-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/pseudo-elements.tentative.html
 create mode 100644 tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html
 rename tests/wpt/tests/html/semantics/popovers/{popover-light-dismiss-with-anchor.tentative.tentative.html => popover-light-dismiss-with-anchor.tentative.html} (100%)
 create mode 100644 tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-resource-timing.https.html
 create mode 100644 tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-for-data-url.tentative.https.sub.html
 create mode 100644 tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-data-url.tentative.https.sub.html
 create mode 100644 tests/wpt/tests/shared-storage/shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html
 create mode 100644 tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-data-url.tentative.https.sub.html
 delete mode 100644 tests/wpt/tests/shared-storage/shared-storage-writable-opaque-origin.tentative.https.sub.html
 create mode 100644 tests/wpt/tests/speculation-rules/prefetch/no-vary-search/test-inputs.js
 create mode 100644 tests/wpt/tests/speculation-rules/prerender/no-vary-search.https.html
 create mode 100644 tests/wpt/tests/trusted-types/SVGScriptElement-internal-slot.html
 create mode 100644 tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none-name.html
 create mode 100644 tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none.html
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence_tentative.py
 create mode 100644 tests/wpt/tests/webdriver/tests/classic/new_session/unhandled_prompt_behavior.py

diff --git a/tests/wpt/meta-legacy-layout/FileAPI/Blob-methods-from-detached-frame.html.ini b/tests/wpt/meta-legacy-layout/FileAPI/Blob-methods-from-detached-frame.html.ini
new file mode 100644
index 00000000000..9aefcc5a465
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/FileAPI/Blob-methods-from-detached-frame.html.ini
@@ -0,0 +1,6 @@
+[Blob-methods-from-detached-frame.html]
+  [slice()]
+    expected: FAIL
+
+  [bytes()]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-bytes.any.js.ini b/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-bytes.any.js.ini
new file mode 100644
index 00000000000..fab0bd6fb4e
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-bytes.any.js.ini
@@ -0,0 +1,32 @@
+[Blob-bytes.any.worker.html]
+  [Blob.bytes()]
+    expected: FAIL
+
+  [Blob.bytes() empty Blob data]
+    expected: FAIL
+
+  [Blob.bytes() non-ascii input]
+    expected: FAIL
+
+  [Blob.bytes() non-unicode input]
+    expected: FAIL
+
+  [Blob.bytes() concurrent reads]
+    expected: FAIL
+
+
+[Blob-bytes.any.html]
+  [Blob.bytes()]
+    expected: FAIL
+
+  [Blob.bytes() empty Blob data]
+    expected: FAIL
+
+  [Blob.bytes() non-ascii input]
+    expected: FAIL
+
+  [Blob.bytes() non-unicode input]
+    expected: FAIL
+
+  [Blob.bytes() concurrent reads]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-relative-color.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-relative-color.html.ini
index 89a2fae7c7a..0c607b8dc33 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-relative-color.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-relative-color.html.ini
@@ -3667,3 +3667,12 @@
 
   [e.style['color'\] = "hsla(from color-mix(in srgb, red, red) h s l / alpha)" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "lch(from currentColor l c h)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(from rebeccapurple srgb r g b)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgb(from color(srgb 0.4 0.2 0.6) r g b)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-fonts/variable-in-font-variation-settings.html.ini b/tests/wpt/meta-legacy-layout/css/css-fonts/variable-in-font-variation-settings.html.ini
new file mode 100644
index 00000000000..c52ce49c777
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-fonts/variable-in-font-variation-settings.html.ini
@@ -0,0 +1,3 @@
+[variable-in-font-variation-settings.html]
+  [var() in font-variation-settings]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-001.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-001.tentative.html.ini
new file mode 100644
index 00000000000..0846054622b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-001.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-001.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-002.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-002.tentative.html.ini
new file mode 100644
index 00000000000..672bbf776fe
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-002.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-002.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-003.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-003.tentative.html.ini
new file mode 100644
index 00000000000..8fdd292cb00
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-003.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-003.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-004.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-004.tentative.html.ini
new file mode 100644
index 00000000000..29770e6524a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-004.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-004.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-005.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-005.tentative.html.ini
new file mode 100644
index 00000000000..7c7c26bce5c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-005.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-005.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-009.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-009.tentative.html.ini
new file mode 100644
index 00000000000..8e3126191e7
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-009.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-009.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-010.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-010.tentative.html.ini
new file mode 100644
index 00000000000..1be7dc44f47
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-010.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-010.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-011.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-011.tentative.html.ini
new file mode 100644
index 00000000000..55e2d3799e9
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-011.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-011.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-013.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-013.tentative.html.ini
new file mode 100644
index 00000000000..080b13f055b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-013.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-013.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-014.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-014.tentative.html.ini
new file mode 100644
index 00000000000..83b70019122
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-014.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-014.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-015.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-015.tentative.html.ini
new file mode 100644
index 00000000000..96067a1553b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-015.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-015.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-016.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-016.tentative.html.ini
new file mode 100644
index 00000000000..bc8e676d3fb
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp-auto-016.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-016.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini
deleted file mode 100644
index ab5459ae54c..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini
+++ /dev/null
@@ -1,27 +0,0 @@
-[scroll-markers-computed.tentative.html]
-  [Property scroll-markers value 'initial']
-    expected: FAIL
-
-  [Property scroll-markers value 'inherit']
-    expected: FAIL
-
-  [Property scroll-markers value 'unset']
-    expected: FAIL
-
-  [Property scroll-markers value 'revert']
-    expected: FAIL
-
-  [Property scroll-markers value 'none']
-    expected: FAIL
-
-  [Property scroll-markers value 'before']
-    expected: FAIL
-
-  [Property scroll-markers value 'after']
-    expected: FAIL
-
-  [The scroll-markers property shows up in CSSStyleDeclaration enumeration]
-    expected: FAIL
-
-  [The scroll-markers property shows up in CSSStyleDeclaration.cssText]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini
deleted file mode 100644
index 157a05bffbe..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini
+++ /dev/null
@@ -1,21 +0,0 @@
-[scroll-markers-valid.tentative.html]
-  [e.style['scroll-markers'\] = "initial" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "inherit" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "unset" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "revert" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "none" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "before" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "after" should set the property value]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini b/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini
new file mode 100644
index 00000000000..35256741d38
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini
@@ -0,0 +1,2 @@
+[dynamic-available-size-iframe.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-transforms/transform-important.html.ini b/tests/wpt/meta-legacy-layout/css/css-transforms/transform-important.html.ini
new file mode 100644
index 00000000000..e45f7d9b600
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-transforms/transform-important.html.ini
@@ -0,0 +1,3 @@
+[transform-important.html]
+  [CSS Transforms: !important flag parsing]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
index a0c94fe0a1c..8f11b5285e0 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
@@ -2884,3 +2884,861 @@
 
   [Web Animations: property <height> from [calc-size(auto, size * 2)\] to [50%\] at (1.25) should be [0px\]]
     expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini
new file mode 100644
index 00000000000..b241061a801
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini
@@ -0,0 +1,21 @@
+[calc-size-interpolation-expansion.tentative.html]
+  [value at progress 0.75 in animation of "height" from "auto" to "calc-size(0px)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "height" from "0px" to "calc-size(calc-size(min-content, size + 20px), size * 2)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "height" from "calc-size(min-content, size * 4)" to "calc-size(calc-size(min-content, size + 20px), size * 2)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(fit-content, 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(any, 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(calc-size(any, 30px), 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(fit-content, 20px)" to "calc-size(calc-size(fit-content, 3 * size + 10px), min(size + 20px, size * 2 - 30px) + size * 2 + 80px)"]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
index 468dc5cfcd6..0bf4e50b1c8 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
@@ -2716,3 +2716,123 @@
 
   [Web Animations: property <width> from [inherit\] to [calc-size(auto, size * 0.5)\] at (1.25) should be [112.5px\]]
     expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-size/calc-size-typed-om.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/calc-size-typed-om.html.ini
new file mode 100644
index 00000000000..c09540c8fc8
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-values/calc-size/calc-size-typed-om.html.ini
@@ -0,0 +1,63 @@
+[calc-size-typed-om.html]
+  [computedStyleMap serialization of width: calc-size(auto, size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content, size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of height: calc-size(min-content, size * 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of max-width: calc-size(max-content, size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of max-height: calc-size(fit-content, 30px + size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content, 50% + size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 40%)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 50px + 30%)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(10px, sign(size) * size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(30px, 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(any, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(2in, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(min-content, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(min-content, size), size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(30px)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(min(30px, 2em))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(any, 30px))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(fit-content, size * 2))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(30px))]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
index 9593c6f5110..737724a07b3 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
@@ -82,3 +82,6 @@
 
   [calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 2) should be used-value-equivalent to 3.6]
     expected: FAIL
+
+  [rotate3d(progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), calc(progress(11em from 1rem to 11em) * 2deg)) should be used-value-equivalent to rotate3d(2, 2, 2, 2deg)]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/cssom-view/idlharness.html.ini b/tests/wpt/meta-legacy-layout/css/cssom-view/idlharness.html.ini
index 42baed8b0e6..5bdc2305057 100644
--- a/tests/wpt/meta-legacy-layout/css/cssom-view/idlharness.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/cssom-view/idlharness.html.ini
@@ -595,3 +595,12 @@
 
   [Element interface: document.createElementNS("x", "y") must inherit property "currentCSSZoom" with the proper type]
     expected: FAIL
+
+  [Document interface: operation caretPositionFromPoint(double, double, ShadowRoot...)]
+    expected: FAIL
+
+  [Document interface: document must inherit property "caretPositionFromPoint(double, double, ShadowRoot...)" with the proper type]
+    expected: FAIL
+
+  [Document interface: calling caretPositionFromPoint(double, double, ShadowRoot...) on document with too few arguments must throw TypeError]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/filter-effects/backdrop-filter-important.html.ini b/tests/wpt/meta-legacy-layout/css/filter-effects/backdrop-filter-important.html.ini
new file mode 100644
index 00000000000..bd678b919ba
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/filter-effects/backdrop-filter-important.html.ini
@@ -0,0 +1,3 @@
+[backdrop-filter-important.html]
+  [CSS Filters: !important flag parsing]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/custom-elements/reactions/customized-builtins/HTMLMediaElement.html.ini b/tests/wpt/meta-legacy-layout/custom-elements/reactions/customized-builtins/HTMLMediaElement.html.ini
deleted file mode 100644
index 2ca05f57bb0..00000000000
--- a/tests/wpt/meta-legacy-layout/custom-elements/reactions/customized-builtins/HTMLMediaElement.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[HTMLMediaElement.html]
-  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/fetch/api/idlharness.any.js.ini b/tests/wpt/meta-legacy-layout/fetch/api/idlharness.any.js.ini
index 6a99f2efa69..4c76c92b40e 100644
--- a/tests/wpt/meta-legacy-layout/fetch/api/idlharness.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/api/idlharness.any.js.ini
@@ -89,6 +89,18 @@
   [Response interface: calling json(any, optional ResponseInit) on new Response() with too few arguments must throw TypeError]
     expected: FAIL
 
+  [Request interface: operation bytes()]
+    expected: FAIL
+
+  [Request interface: new Request('about:blank') must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
+  [Response interface: operation bytes()]
+    expected: FAIL
+
+  [Response interface: new Response() must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
 
 [idlharness.any.worker.html]
   [Response interface: operation blob()]
@@ -175,6 +187,18 @@
   [Response interface: calling json(any, optional ResponseInit) on new Response() with too few arguments must throw TypeError]
     expected: FAIL
 
+  [Request interface: operation bytes()]
+    expected: FAIL
+
+  [Request interface: new Request('about:blank') must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
+  [Response interface: operation bytes()]
+    expected: FAIL
+
+  [Response interface: new Response() must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
 
 [idlharness.any.sharedworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini b/tests/wpt/meta-legacy-layout/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
index 31b69125e14..3b0a1e30ebc 100644
--- a/tests/wpt/meta-legacy-layout/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
@@ -7,3 +7,6 @@
 
   [Fetch cross origin dictionary using link element]
     expected: FAIL
+
+  [Browser supports link element with compression-dictionary rel.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini
new file mode 100644
index 00000000000..3e07e6b7d1f
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini
@@ -0,0 +1,6 @@
+[empty-iframe-load-event.html]
+  [Check execution order from nested timeout]
+    expected: FAIL
+
+  [Check execution order on load handler]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
index fdc27d37788..830aeb8ae48 100644
--- a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
@@ -1,6 +1,7 @@
 [autofocus-dialog.html]
+  expected: TIMEOUT
   [<dialog> can contain autofocus, without stopping page autofocus content from working]
     expected: FAIL
 
   [<dialog>-contained autofocus element gets focused when the dialog is shown]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index e5994e21efc..25d9964f057 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index 841bafc6eca..b83d68ddd33 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,3 +1,3 @@
 [iframe_sandbox_popups_escaping-2.html]
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index f9138fb999a..6f7461b9472 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index 6bec7a732b8..76e34322dca 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-2.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index d5fd800f09d..ff6467094b8 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini
new file mode 100644
index 00000000000..b7fe505c37a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini
@@ -0,0 +1,2 @@
+[select-open-invalidation.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/bounded-sizes.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/bounded-sizes.tentative.html.ini
index 365e0b46b9b..401de0ab4a1 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/bounded-sizes.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/bounded-sizes.tentative.html.ini
@@ -4,3 +4,6 @@
 
   [Properties with values in bounds should not be modified]
     expected: FAIL
+
+  ['Min' properties should not be allowed to go over the maximum allowed values for 'max' properties]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
index b6081e242b4..663bfc11d0a 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
@@ -7,3 +7,9 @@
 
   [Expressions margins/offset should always return at least 0px]
     expected: FAIL
+
+  [Negative margins/offset should be changed to 4px]
+    expected: FAIL
+
+  [Expressions margins/offset should always return at least 4px]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini
new file mode 100644
index 00000000000..b30a0787644
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini
@@ -0,0 +1,2 @@
+[pseudo-elements-in-div.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements.tentative.html.ini
new file mode 100644
index 00000000000..27522074172
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/permission-element/pseudo-elements.tentative.html.ini
@@ -0,0 +1,2 @@
+[pseudo-elements.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini
new file mode 100644
index 00000000000..9be41e17bb6
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini
@@ -0,0 +1,2 @@
+[popover-anchor-inset-rule-display.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
index 7268779f3b6..ad8953806a8 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
@@ -21,3 +21,9 @@
 
   [The :read-write pseudo-class must match elements that are inside editing hosts, but not match inputs and textareas inside that aren't]
     expected: FAIL
+
+  [The :read-only pseudo-class must match form-associated custom elements]
+    expected: FAIL
+
+  [The :read-write pseudo-class must match form-associated contenteditable custom elements]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/resource-timing/nested-context-navigations-iframe.html.ini b/tests/wpt/meta-legacy-layout/resource-timing/nested-context-navigations-iframe.html.ini
deleted file mode 100644
index 1fa7979df30..00000000000
--- a/tests/wpt/meta-legacy-layout/resource-timing/nested-context-navigations-iframe.html.ini
+++ /dev/null
@@ -1,22 +0,0 @@
-[nested-context-navigations-iframe.html]
-  expected: TIMEOUT
-  [Test that cross-site iframe navigations are not observable by the parent, even after history navigations by the parent]
-    expected: TIMEOUT
-
-  [Test that iframe navigations are not observable by the parent]
-    expected: NOTRUN
-
-  [Test that crossorigin iframe navigations are not observable by the parent]
-    expected: NOTRUN
-
-  [Test that cross-site iframe navigations are not observable by the parent]
-    expected: NOTRUN
-
-  [Test that iframe refreshes are not observable by the parent]
-    expected: NOTRUN
-
-  [Test that crossorigin iframe refreshes are not observable by the parent]
-    expected: NOTRUN
-
-  [Test that cross-site iframe refreshes are not observable by the parent]
-    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/streams/readable-streams/from.any.js.ini b/tests/wpt/meta-legacy-layout/streams/readable-streams/from.any.js.ini
index 6492ae48834..7594fc96cd0 100644
--- a/tests/wpt/meta-legacy-layout/streams/readable-streams/from.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/streams/readable-streams/from.any.js.ini
@@ -83,6 +83,9 @@
   [ReadableStream.from(array), push() to array while reading]
     expected: FAIL
 
+  [ReadableStream.from ignores a null @@asyncIterator]
+    expected: FAIL
+
 
 [from.any.worker.html]
   [ReadableStream.from accepts an array of values]
@@ -166,6 +169,9 @@
   [ReadableStream.from(array), push() to array while reading]
     expected: FAIL
 
+  [ReadableStream.from ignores a null @@asyncIterator]
+    expected: FAIL
+
 
 [from.any.sharedworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/webvtt/api/VTTCue/region.html.ini b/tests/wpt/meta-legacy-layout/webvtt/api/VTTCue/region.html.ini
deleted file mode 100644
index 804993db4ec..00000000000
--- a/tests/wpt/meta-legacy-layout/webvtt/api/VTTCue/region.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[region.html]
-  [VTTCue.region, script-created cue]
-    expected: FAIL
-
diff --git a/tests/wpt/meta-legacy-layout/workers/WorkerGlobalScope-close.html.ini b/tests/wpt/meta-legacy-layout/workers/WorkerGlobalScope-close.html.ini
deleted file mode 100644
index 24daae4c2e7..00000000000
--- a/tests/wpt/meta-legacy-layout/workers/WorkerGlobalScope-close.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[WorkerGlobalScope-close.html]
-  [Test sending a message after closing.]
-    expected: FAIL
diff --git a/tests/wpt/meta/FileAPI/Blob-methods-from-detached-frame.html.ini b/tests/wpt/meta/FileAPI/Blob-methods-from-detached-frame.html.ini
new file mode 100644
index 00000000000..9aefcc5a465
--- /dev/null
+++ b/tests/wpt/meta/FileAPI/Blob-methods-from-detached-frame.html.ini
@@ -0,0 +1,6 @@
+[Blob-methods-from-detached-frame.html]
+  [slice()]
+    expected: FAIL
+
+  [bytes()]
+    expected: FAIL
diff --git a/tests/wpt/meta/FileAPI/blob/Blob-bytes.any.js.ini b/tests/wpt/meta/FileAPI/blob/Blob-bytes.any.js.ini
new file mode 100644
index 00000000000..0460f3d229d
--- /dev/null
+++ b/tests/wpt/meta/FileAPI/blob/Blob-bytes.any.js.ini
@@ -0,0 +1,32 @@
+[Blob-bytes.any.html]
+  [Blob.bytes()]
+    expected: FAIL
+
+  [Blob.bytes() empty Blob data]
+    expected: FAIL
+
+  [Blob.bytes() non-ascii input]
+    expected: FAIL
+
+  [Blob.bytes() non-unicode input]
+    expected: FAIL
+
+  [Blob.bytes() concurrent reads]
+    expected: FAIL
+
+
+[Blob-bytes.any.worker.html]
+  [Blob.bytes()]
+    expected: FAIL
+
+  [Blob.bytes() empty Blob data]
+    expected: FAIL
+
+  [Blob.bytes() non-ascii input]
+    expected: FAIL
+
+  [Blob.bytes() non-unicode input]
+    expected: FAIL
+
+  [Blob.bytes() concurrent reads]
+    expected: FAIL
diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index 66ce446fe98..c16bd3b5bf6 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -652,6 +652,20 @@
        null,
        {}
       ]
+     ],
+     "grid-anchor-center-crash.html": [
+      "bab4eed6b66dfb846ef451f14ced6eb2a0867cc1",
+      [
+       null,
+       {}
+      ]
+     ],
+     "position-try-invalid-anchor-crash.html": [
+      "dc09bb4b3f8d61652f411fb3cc72e4acd81ef8c8",
+      [
+       null,
+       {}
+      ]
      ]
     },
     "css-animations": {
@@ -2390,7 +2404,14 @@
         {}
        ]
       ]
-     }
+     },
+     "variable-in-feature-crash.html": [
+      "0d296b3d9ad76139094d4a48c95e8ea6374a596f",
+      [
+       null,
+       {}
+      ]
+     ]
     },
     "css-grid": {
      "abspos": {
@@ -3882,6 +3903,13 @@
         {}
        ]
       ],
+      "consume-color-contrast-crash.html": [
+       "4fd342fb80367f9e20b7fc5f756863e88d44bd83",
+       [
+        null,
+        {}
+       ]
+      ],
       "initial-in-audio-crash.html": [
        "dfc2b850a51fcedc6d61af7a93430e2cda5c8954",
        [
@@ -32070,6 +32098,19 @@
      ]
     },
     "css-page": {
+     "background-image-only-for-print.html": [
+      "f100f7eaeed55c5707e0918c01884cab6789a686",
+      [
+       null,
+       [
+        [
+         "/css/css-page/background-image-only-for-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "fixedpos-001-print.html": [
       "04feb96e8474bb638254bc0babc22fa378178f48",
       [
@@ -34690,6 +34731,47 @@
          {}
         ]
        ]
+      },
+      "the-object-element": {
+       "object-image-display-none-loading-for-print.html": [
+        "40158cb3de4cf39b6449b7f28b03cb221ac199d7",
+        [
+         null,
+         [
+          [
+           "/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print-ref.html",
+           "=="
+          ]
+         ],
+         {}
+        ]
+       ],
+       "object-image-only-for-print.html": [
+        "b51a1bb1d332d87b30304c1f9faf8b5ce57c5b59",
+        [
+         null,
+         [
+          [
+           "/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html",
+           "=="
+          ]
+         ],
+         {}
+        ]
+       ],
+       "object-svg-only-for-print.html": [
+        "7bb804c2e2eda08493fe05bf4ff27431789b6247",
+        [
+         null,
+         [
+          [
+           "/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html",
+           "=="
+          ]
+         ],
+         {}
+        ]
+       ]
       }
      }
     }
@@ -147045,7 +147127,7 @@
       ]
      ],
      "relative-currentcolor-rgb-02.html": [
-      "603938d0dbd9037442ac18b4a18b898e5afe079c",
+      "b5ccce19f99b4601698844a305b491488e579e5b",
       [
        null,
        [
@@ -187269,6 +187351,19 @@
         {}
        ]
       ],
+      "dynamic-subgridded-item-height.html": [
+       "46e41d233559afe301becb398b40f0a5a813dc6f",
+       [
+        null,
+        [
+         [
+          "/css/reference/ref-filled-green-100px-square.xht",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "grid-gap-001.html": [
        "0bc8eed4d8e408b18211b38095eecc0d983a96f4",
        [
@@ -195949,6 +196044,161 @@
       ]
      },
      "text-box-trim": {
+      "text-box-trim-accumulation-001.html": [
+       "08eedbdbfebc3263bcaefb2ce25727eceb1e91e7",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-start-001-ref.html?class=text",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-dynamic-001.html": [
+       "5cd25060934ef6a73aa0d01141adde8296103c08",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-dynamic-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-dynamic-002.html": [
+       "a921d4d0caa06c2974b7e1a3386c1100a97dae40",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-dynamic-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-end-001.html": [
+       "0bca8de808803effcb766c52bc235f95c985d78c",
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=alphabetic",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=alphabetic",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=leading",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=leading",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=text",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=text",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vlr,cap",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vlr,cap",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vlr,ex",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vlr,ex",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vlr,leading",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vlr,leading",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vlr,text",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vlr,text",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vrl,alphabetic",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vrl,alphabetic",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vrl,leading",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vrl,leading",
+          "=="
+         ]
+        ],
+        {}
+       ],
+       [
+        "css/css-inline/text-box-trim/text-box-trim-end-001.html?class=vrl,text",
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html?class=vrl,text",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-float-clear-br-001.html": [
+       "985ae60c46db62bb01f8c886b11e4cb3289b48bc",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "text-box-trim-float-start-001.html": [
        "99e4736baf09257d4f14577598f4f8d531c7c681",
        [
@@ -195963,7 +196213,7 @@
        ]
       ],
       "text-box-trim-half-leading-block-box-001.html": [
-       "2bfdc4e31b55c237a21068fb8bf931b6e2f91fd4",
+       "92ec181c51ffc2d88088a8456003ab423ffffbba",
        [
         null,
         [
@@ -195988,6 +196238,32 @@
         {}
        ]
       ],
+      "text-box-trim-half-leading-block-box-003.html": [
+       "916afde8905767f6b3a17949f5809ff440ebeb14",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-initial-letter-end-001.html": [
+       "809666ee0d07e6b4cc4dc6a9509d188392d59ded",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "text-box-trim-initial-letter-start-001.html": [
        "4f8d3a33e5b4e0200db0c89ff7902fea266a4843",
        [
@@ -196001,8 +196277,47 @@
         {}
        ]
       ],
+      "text-box-trim-multicol-001.html": [
+       "69323e0aeffd2fb641cc0bbd1ef952103ed171ab",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-multicol-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-multicol-002.html": [
+       "dbba108b16deac3c868cd47851337b7065ef7a18",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-multicol-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "text-box-trim-ruby-end-001.html": [
+       "5d0229fa373943ccebb7f0f7efc2a9dbc8b76a4c",
+       [
+        null,
+        [
+         [
+          "/css/css-inline/text-box-trim/text-box-trim-ruby-start-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "text-box-trim-ruby-start-001.html": [
-       "257601236962ecc6eb5ec3a64e0a059a6626674c",
+       "d673d0ab02d9e4d03567389ca3d4044cdc35a84c",
        [
         null,
         [
@@ -196128,7 +196443,7 @@
        ]
       ],
       "text-box-trim-tall-line-001.html": [
-       "1b2bbffc1483a8b30b5eeff0d60b8b51f981fde6",
+       "9a86e394cc05abff0eea25262f32e7589ef3b59e",
        [
         null,
         [
@@ -212618,6 +212933,214 @@
        {}
       ]
      ],
+     "line-clamp-auto-001.tentative.html": [
+      "02d8479736d4d6fd7e26df53611624e7a75d0989",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-005-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-002.tentative.html": [
+      "ff9e802f0f9e376635230707972611ab5a0ec7d6",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/line-clamp-auto-002-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-003.tentative.html": [
+      "a74704dd3b0765434c27935c944fac010415b13c",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/line-clamp-auto-002-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-004.tentative.html": [
+      "2dbf9d54084034f2a1b83eccf370e281af24dc8c",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-005-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-005.tentative.html": [
+      "1c9148e2647f310522103d1b5c6c2765a6c6644c",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/line-clamp-auto-005-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-006.tentative.html": [
+      "ab6915f52163f9cbd1c4c2f2fa4e9d8bf90a3a88",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-007.tentative.html": [
+      "f7d56bfa6557413e33bbb2422c5234437ac302b4",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-008.tentative.html": [
+      "9e7f38ab7ca09debf7628505d8d63ce473dc355e",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-009.tentative.html": [
+      "44d111056c6b021c796ea694d744816125314def",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-036-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-010.tentative.html": [
+      "cb706bba08e2c9dd6ff05b926be23eb22c9c25b7",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/webkit-line-clamp-037-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "line-clamp-auto-011.tentative.html": [
+      "00076a5336e89004b6a2143e9bd6c72ec9fe95e0",
+      [
+       null,
+       [
+        [
+         "/css/css-overflow/reference/line-clamp-auto-011-ref.html",
+         "=="
+        ]
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+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?29-29",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?3-3",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?30-last",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?4-4",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?5-5",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?6-6",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?7-7",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?8-8",
+       {
+        "timeout": "long"
+       }
+      ],
+      [
+       "speculation-rules/prerender/no-vary-search.https.html?9-9",
+       {
+        "timeout": "long"
+       }
+      ]
+     ],
      "prefetch.https.html": [
       "42e4fa47867210c14bc56fb67d66f544ddd111fd",
       [
@@ -729716,7 +730627,7 @@
       ]
      ],
      "response-code-non-successful.html": [
-      "05d997a0081e5aef462a63fdb04b333998057d57",
+      "68cd505b2ba56f987ec3918acd2d439fce8c1dab",
       [
        "speculation-rules/prerender/response-code-non-successful.html?code=204",
        {
@@ -729755,7 +730666,7 @@
       ]
      ],
      "response-code-successful.html": [
-      "0e8433b3b2be4f1de745ff492a3d08016a445a0a",
+      "eca7f38c8c3d0b4e989ef68192c6248882d44cfe",
       [
        "speculation-rules/prerender/response-code-successful.html?code=200",
        {
@@ -734772,7 +735683,7 @@
       ]
      ],
      "from.any.js": [
-      "58ad4d4add127d933c00af0b36c1d8c16b08f76d",
+      "2a4212ab890606527d19b6c63a911a7c7fc58059",
       [
        "streams/readable-streams/from.any.html",
        {
@@ -741782,7 +742693,7 @@
      ]
     ],
     "HTMLScriptElement-internal-slot.html": [
-     "3a4b905f462f3f19f8d22424e80d01ea1e702b58",
+     "96629c1012290fdc14ee55342929378e1e3bc2c6",
      [
       null,
       {}
@@ -741802,6 +742713,13 @@
       {}
      ]
     ],
+    "SVGScriptElement-internal-slot.html": [
+     "0f7e4eaeaacf12e6cf3236823f391b61c9f4a961",
+     [
+      null,
+      {}
+     ]
+    ],
     "TrustedType-AttributeNodes.html": [
      "f4269a5d40d02d372c57dd09486f3ff8b3b499a9",
      [
@@ -741858,6 +742776,20 @@
       {}
      ]
     ],
+    "TrustedTypePolicyFactory-createPolicy-cspTests-none-none-name.html": [
+     "769861e027a2705d81709b40498a02d71bd374e3",
+     [
+      null,
+      {}
+     ]
+    ],
+    "TrustedTypePolicyFactory-createPolicy-cspTests-none-none.html": [
+     "81f8185ff8614ddb8877a4346416a633af54ee3e",
+     [
+      null,
+      {}
+     ]
+    ],
     "TrustedTypePolicyFactory-createPolicy-cspTests-none-skip.html": [
      "d0920497d944e961950c6aaa1bbb0dc2f2debe8c",
      [
@@ -741966,7 +742898,7 @@
      ]
     ],
     "block-Document-execCommand.html": [
-     "87759cdc19716c4c269d13a1bb6e6a4d995b4b7d",
+     "7a26bff3ea967812ed4ec97161c173c861ad498f",
      [
       null,
       {}
@@ -741987,7 +742919,7 @@
      ]
     ],
     "block-string-assignment-to-DOMWindowTimers-setTimeout-setInterval.html": [
-     "c24715718d17561f779c6df7098f4c0b874675a9",
+     "2f8a99a94294f4d1808b92aca9dfbcf3b52b6091",
      [
       null,
       {}
@@ -742085,21 +743017,21 @@
      ]
     ],
     "default-policy-callback-arguments.html": [
-     "4801b55387ca49867183e218105daa949d722668",
+     "9b07be00261655e264cbe70f3b8dda67deec4152",
      [
       null,
       {}
      ]
     ],
     "default-policy-report-only.html": [
-     "1cff751a80194bfaef6095617a89a423b76e70b2",
+     "9d5f83e8939d754962545ac38fadf51256faf39c",
      [
       null,
       {}
      ]
     ],
     "default-policy.html": [
-     "debde85cdac9d7bb1bcb19b56f7063fea0a53241",
+     "47fdf1b1d4489c73ba5e304fe311027acf626881",
      [
       null,
       {}
@@ -742120,21 +743052,21 @@
      ]
     ],
     "eval-csp-no-tt.html": [
-     "6720d80fe762b3b2f4b5507f91d57d9d6a43374b",
+     "5c44d854c6a3ea7cd6f0896872d1d0a6bd53610c",
      [
       null,
       {}
      ]
     ],
     "eval-csp-tt-default-policy.html": [
-     "9afe571199c9b48003dbe89fc445e9de32e85222",
+     "ab9b98df64ec2fefc29a266dddb57e3b9c5638f6",
      [
       null,
       {}
      ]
     ],
     "eval-csp-tt-no-default-policy.html": [
-     "8c4aba11ecbbc54f3b6b8e9a1d9787b3461a7f45",
+     "c4e5d0911ac5714f650d107b11e9415181a0aaae",
      [
       null,
       {}
@@ -742148,21 +743080,21 @@
      ]
     ],
     "eval-no-csp-no-tt-default-policy.html": [
-     "d36afbc8ac429516a4baab6816281b1a54308eee",
+     "18b9441c7a1a97ab0620db78580619a3e2f53ddb",
      [
       null,
       {}
      ]
     ],
     "eval-no-csp-no-tt.html": [
-     "3013c084470767a88dc5df3e93e8fdb9b19d9bc3",
+     "3f9799864d4aa5a0ffaf713ba6d9d9a3d99e94ce",
      [
       null,
       {}
      ]
     ],
     "eval-with-permissive-csp.html": [
-     "8910d4e7ef0fa983e61308bc149eaad971c183a5",
+     "fb0776852e71440b5b5679e64e05d5d52963a5d8",
      [
       null,
       {}
@@ -742187,7 +743119,7 @@
      ]
     ],
     "modify-attributes-in-callback.html": [
-     "96b4501128bf659e286e6ac41250538155e7156a",
+     "4f94e0887220051bcd8aadccdab20bb596b2fc62",
      [
       null,
       {}
@@ -742215,14 +743147,14 @@
      ]
     ],
     "require-trusted-types-for.html": [
-     "2a3820a89b8ad36c324139bf75fab8d72d7087a4",
+     "b0dcd9cc930024f51fbfb2c522fe04a9ddcdb9e5",
      [
       null,
       {}
      ]
     ],
     "trusted-types-createHTMLDocument.html": [
-     "e4af2eb59029a11aaa5490023fbb942063cd3722",
+     "cf209cca80060d709bf975dc69ac158eb3e92835",
      [
       null,
       {}
@@ -742243,7 +743175,7 @@
      ]
     ],
     "trusted-types-duplicate-names-without-enforcement.html": [
-     "afef457a9c2328c69c9856a045a94613629a44f7",
+     "d625ab4e6179eb9ce021938dc9e5d92af56cd1c8",
      [
       null,
       {}
@@ -742357,7 +743289,7 @@
      ]
     ],
     "worker-constructor.https.html": [
-     "6e127b11a5b593360cc6e3b5155d93deb580a75a",
+     "319041cf331806f7a7f53a5955216f5f11b22266",
      [
       null,
       {}
@@ -769903,7 +770835,7 @@
       ]
      ],
      "elementwise-logical.https.any.js": [
-      "86183b074ae0fe832a9f9837791a8f28799e3212",
+      "25d7b59924cc4d5a2cff89ece5c5397f92d04c11",
       [
        "webnn/validation_tests/elementwise-logical.https.any.html",
        {
@@ -770067,7 +770999,7 @@
       ]
      ],
      "gather.https.any.js": [
-      "668112cc10fff90db33c5f7aa100e1bdf258e5c8",
+      "4a2ab218f8d2ab36c355eaab80f692d01755a75a",
       [
        "webnn/validation_tests/gather.https.any.html",
        {
@@ -770864,7 +771796,7 @@
       ]
      ],
      "reduction.https.any.js": [
-      "7da6b24dcf058383e12d2fbfe7f1f5dab4721350",
+      "e9643c0f8a591728274a5d8625fbb9ff83e3e589",
       [
        "webnn/validation_tests/reduction.https.any.html",
        {
@@ -789073,7 +790005,7 @@
        ]
       ],
       "region.html": [
-       "ae51c5f6039c70b15b0be10a94491a42bd2c4946",
+       "8196858bc56786cf7960149feac62d2c417e31d9",
        [
         null,
         {}
@@ -818780,7 +819712,7 @@
        },
        "user_prompt_opened": {
         "user_prompt_opened.py": [
-         "fcd030116df57cdfa176d125942f5000a7641006",
+         "c37bb66e4e9d6a499a5e87e7338d952562649325",
          [
           null,
           {}
@@ -818952,7 +819884,14 @@
          ]
         ],
         "sequence.py": [
-         "603b29414153ff65aad67391c018439452c3a2e7",
+         "7c68fd299f782bf10a5c078df1a7b98890550cdf",
+         [
+          null,
+          {}
+         ]
+        ],
+        "sequence_tentative.py": [
+         "f4799a0315436d6e7421b2992c7f85aa0c405be5",
          [
           null,
           {}
@@ -818968,7 +819907,7 @@
          ]
         ],
         "files.py": [
-         "7a31f3e14a4ec640f5e7a6a042824041f58c39c3",
+         "df91861752cf4cdc3ff267535d939b0127ca2994",
          [
           null,
           {}
@@ -820995,6 +821934,15 @@
          {}
         ]
        ],
+       "unhandled_prompt_behavior.py": [
+        "2df69b131ffae686fe2d9b49890e692f3ac8601d",
+        [
+         null,
+         {
+          "timeout": "long"
+         }
+        ]
+       ],
        "websocket_url.py": [
         "452decc90aa18420459d72886a85d89918a0fb38",
         [
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-relative-color.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-relative-color.html.ini
index 89a2fae7c7a..0c607b8dc33 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-relative-color.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-relative-color.html.ini
@@ -3667,3 +3667,12 @@
 
   [e.style['color'\] = "hsla(from color-mix(in srgb, red, red) h s l / alpha)" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "lch(from currentColor l c h)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(from rebeccapurple srgb r g b)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgb(from color(srgb 0.4 0.2 0.6) r g b)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-fonts/variable-in-font-variation-settings.html.ini b/tests/wpt/meta/css/css-fonts/variable-in-font-variation-settings.html.ini
new file mode 100644
index 00000000000..c52ce49c777
--- /dev/null
+++ b/tests/wpt/meta/css/css-fonts/variable-in-font-variation-settings.html.ini
@@ -0,0 +1,3 @@
+[variable-in-font-variation-settings.html]
+  [var() in font-variation-settings]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-lists/counter-important.html.ini b/tests/wpt/meta/css/css-lists/counter-important.html.ini
new file mode 100644
index 00000000000..10fb47b3324
--- /dev/null
+++ b/tests/wpt/meta/css/css-lists/counter-important.html.ini
@@ -0,0 +1,3 @@
+[counter-important.html]
+  [CSS Counters: !important flag parsing]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-001.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-001.tentative.html.ini
new file mode 100644
index 00000000000..0846054622b
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-001.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-001.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-002.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-002.tentative.html.ini
new file mode 100644
index 00000000000..672bbf776fe
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-002.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-002.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-003.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-003.tentative.html.ini
new file mode 100644
index 00000000000..8fdd292cb00
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-003.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-003.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-004.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-004.tentative.html.ini
new file mode 100644
index 00000000000..29770e6524a
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-004.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-004.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-005.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-005.tentative.html.ini
new file mode 100644
index 00000000000..7c7c26bce5c
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-005.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-005.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-009.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-009.tentative.html.ini
new file mode 100644
index 00000000000..8e3126191e7
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-009.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-009.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-011.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-011.tentative.html.ini
new file mode 100644
index 00000000000..55e2d3799e9
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-011.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-011.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-013.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-013.tentative.html.ini
new file mode 100644
index 00000000000..080b13f055b
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-013.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-013.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-014.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-014.tentative.html.ini
new file mode 100644
index 00000000000..83b70019122
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-014.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-014.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-015.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-015.tentative.html.ini
new file mode 100644
index 00000000000..96067a1553b
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-015.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-015.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp-auto-016.tentative.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp-auto-016.tentative.html.ini
new file mode 100644
index 00000000000..bc8e676d3fb
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp-auto-016.tentative.html.ini
@@ -0,0 +1,2 @@
+[line-clamp-auto-016.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini b/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini
deleted file mode 100644
index ab5459ae54c..00000000000
--- a/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-computed.tentative.html.ini
+++ /dev/null
@@ -1,27 +0,0 @@
-[scroll-markers-computed.tentative.html]
-  [Property scroll-markers value 'initial']
-    expected: FAIL
-
-  [Property scroll-markers value 'inherit']
-    expected: FAIL
-
-  [Property scroll-markers value 'unset']
-    expected: FAIL
-
-  [Property scroll-markers value 'revert']
-    expected: FAIL
-
-  [Property scroll-markers value 'none']
-    expected: FAIL
-
-  [Property scroll-markers value 'before']
-    expected: FAIL
-
-  [Property scroll-markers value 'after']
-    expected: FAIL
-
-  [The scroll-markers property shows up in CSSStyleDeclaration enumeration]
-    expected: FAIL
-
-  [The scroll-markers property shows up in CSSStyleDeclaration.cssText]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini b/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini
deleted file mode 100644
index 157a05bffbe..00000000000
--- a/tests/wpt/meta/css/css-overflow/parsing/scroll-markers-valid.tentative.html.ini
+++ /dev/null
@@ -1,21 +0,0 @@
-[scroll-markers-valid.tentative.html]
-  [e.style['scroll-markers'\] = "initial" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "inherit" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "unset" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "revert" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "none" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "before" should set the property value]
-    expected: FAIL
-
-  [e.style['scroll-markers'\] = "after" should set the property value]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-transforms/transform-important.html.ini b/tests/wpt/meta/css/css-transforms/transform-important.html.ini
new file mode 100644
index 00000000000..e45f7d9b600
--- /dev/null
+++ b/tests/wpt/meta/css/css-transforms/transform-important.html.ini
@@ -0,0 +1,3 @@
+[transform-important.html]
+  [CSS Transforms: !important flag parsing]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
index a0c94fe0a1c..8f11b5285e0 100644
--- a/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
+++ b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html.ini
@@ -2884,3 +2884,861 @@
 
   [Web Animations: property <height> from [calc-size(auto, size * 2)\] to [50%\] at (1.25) should be [0px\]]
     expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (-0.25) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0) should be [150px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (0.75) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(50%, size)\] to [calc-size(50px, size)\] at (1.25) should be [25px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (-0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.3) should be [calc-size(auto, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (0.6) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(auto, size)\] to [calc-size(50%, size)\] at (1.5) should be [calc-size(50%, size)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.3) should be [calc-size(calc-size(auto, size / 2), size * 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.6) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.5) should be [calc-size(12.5%, size * 4)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 2)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (-0.25) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (0.75) should be [250px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(min-content, size / 2), size * 2)\] to [calc-size(calc-size(any, 150px), size * 2)\] at (1.25) should be [350px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (-0.125) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (0.75) should be [400px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1) should be [500px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(auto, size * 5)\] at (1.25) should be [600px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (-0.25) should be [87.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (0.75) should be [137.5px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1) should be [150px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size / 2), size * 2)\] to [calc-size(12.5%, size * 4)\] at (1.25) should be [162.5px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (-0.25) should be [425px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0) should be [400px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (0.75) should be [325px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1) should be [300px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(100px, size * 2), size * 2)\] to [calc-size(100px, size * 3)\] at (1.25) should be [275px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (-0.25) should be [75px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (0.75) should be [175px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1) should be [200px\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(auto, size / 2), size * 2)\] to [calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)\] at (1.25) should be [225px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [CSS Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (-0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.3) should be [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (0.6) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
+
+  [Web Animations: property <height> from [calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)\] to [calc-size(auto, size * 3)\] at (1.5) should be [calc-size(auto, size * 3)\]]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini
new file mode 100644
index 00000000000..b241061a801
--- /dev/null
+++ b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html.ini
@@ -0,0 +1,21 @@
+[calc-size-interpolation-expansion.tentative.html]
+  [value at progress 0.75 in animation of "height" from "auto" to "calc-size(0px)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "height" from "0px" to "calc-size(calc-size(min-content, size + 20px), size * 2)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "height" from "calc-size(min-content, size * 4)" to "calc-size(calc-size(min-content, size + 20px), size * 2)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(fit-content, 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(any, 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(calc-size(any, 30px), 20px)" to "calc-size(calc-size(fit-content, 40px), size)"]
+    expected: FAIL
+
+  [value at progress 0.75 in animation of "width" from "calc-size(fit-content, 20px)" to "calc-size(calc-size(fit-content, 3 * size + 10px), min(size + 20px, size * 2 - 30px) + size * 2 + 80px)"]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
index 468dc5cfcd6..0bf4e50b1c8 100644
--- a/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
+++ b/tests/wpt/meta/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html.ini
@@ -2716,3 +2716,123 @@
 
   [Web Animations: property <width> from [inherit\] to [calc-size(auto, size * 0.5)\] at (1.25) should be [112.5px\]]
     expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (-0.25) should be [10px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0) should be [20px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (0.75) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(20px, size)\] to [calc-size(60px, size)\] at (1.25) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [CSS Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (-0.25) should be [110px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0) should be [100px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (0.75) should be [70px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1) should be [60px\]]
+    expected: FAIL
+
+  [Web Animations: property <width> from [calc-size(50%, size)\] to [calc-size(60px, size)\] at (1.25) should be [50px\]]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/calc-size/calc-size-typed-om.html.ini b/tests/wpt/meta/css/css-values/calc-size/calc-size-typed-om.html.ini
new file mode 100644
index 00000000000..c09540c8fc8
--- /dev/null
+++ b/tests/wpt/meta/css/css-values/calc-size/calc-size-typed-om.html.ini
@@ -0,0 +1,63 @@
+[calc-size-typed-om.html]
+  [computedStyleMap serialization of width: calc-size(auto, size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content, size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of height: calc-size(min-content, size * 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of max-width: calc-size(max-content, size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of max-height: calc-size(fit-content, 30px + size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content, 50% + size / 2)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 40%)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(any, 50px + 30%)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(10px, sign(size) * size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(30px, 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(any, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(2in, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(min-content, 30px), 25em)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(min-content, size), size)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(30px)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(min(30px, 2em))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(any, 30px))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(fit-content)]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(fit-content, size * 2))]
+    expected: FAIL
+
+  [computedStyleMap serialization of width: calc-size(calc-size(30px))]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini b/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
index 9593c6f5110..737724a07b3 100644
--- a/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
+++ b/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
@@ -82,3 +82,6 @@
 
   [calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 2) should be used-value-equivalent to 3.6]
     expected: FAIL
+
+  [rotate3d(progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), calc(progress(11em from 1rem to 11em) * 2deg)) should be used-value-equivalent to rotate3d(2, 2, 2, 2deg)]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/idlharness.html.ini b/tests/wpt/meta/css/cssom-view/idlharness.html.ini
index 7f7a47b4bec..30bf0819a62 100644
--- a/tests/wpt/meta/css/cssom-view/idlharness.html.ini
+++ b/tests/wpt/meta/css/cssom-view/idlharness.html.ini
@@ -595,3 +595,12 @@
 
   [Element interface: document.createElementNS("x", "y") must inherit property "currentCSSZoom" with the proper type]
     expected: FAIL
+
+  [Document interface: operation caretPositionFromPoint(double, double, ShadowRoot...)]
+    expected: FAIL
+
+  [Document interface: document must inherit property "caretPositionFromPoint(double, double, ShadowRoot...)" with the proper type]
+    expected: FAIL
+
+  [Document interface: calling caretPositionFromPoint(double, double, ShadowRoot...) on document with too few arguments must throw TypeError]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/filter-effects/backdrop-filter-important.html.ini b/tests/wpt/meta/css/filter-effects/backdrop-filter-important.html.ini
new file mode 100644
index 00000000000..bd678b919ba
--- /dev/null
+++ b/tests/wpt/meta/css/filter-effects/backdrop-filter-important.html.ini
@@ -0,0 +1,3 @@
+[backdrop-filter-important.html]
+  [CSS Filters: !important flag parsing]
+    expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/idlharness.any.js.ini b/tests/wpt/meta/fetch/api/idlharness.any.js.ini
index 57faeec7450..ad5ad110157 100644
--- a/tests/wpt/meta/fetch/api/idlharness.any.js.ini
+++ b/tests/wpt/meta/fetch/api/idlharness.any.js.ini
@@ -71,6 +71,18 @@
   [WorkerGlobalScope interface: calling fetch(RequestInfo, optional RequestInit) on self with too few arguments must throw TypeError]
     expected: FAIL
 
+  [Request interface: operation bytes()]
+    expected: FAIL
+
+  [Request interface: new Request('about:blank') must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
+  [Response interface: operation bytes()]
+    expected: FAIL
+
+  [Response interface: new Response() must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
 
 [idlharness.any.sharedworker.html]
   expected: ERROR
@@ -148,6 +160,18 @@
   [Window interface: calling fetch(RequestInfo, optional RequestInit) on window with too few arguments must throw TypeError]
     expected: FAIL
 
+  [Request interface: operation bytes()]
+    expected: FAIL
+
+  [Request interface: new Request('about:blank') must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
+  [Response interface: operation bytes()]
+    expected: FAIL
+
+  [Response interface: new Response() must inherit property "bytes()" with the proper type]
+    expected: FAIL
+
 
 [idlharness.any.serviceworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini b/tests/wpt/meta/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
index 31b69125e14..3b0a1e30ebc 100644
--- a/tests/wpt/meta/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
+++ b/tests/wpt/meta/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html.ini
@@ -7,3 +7,6 @@
 
   [Fetch cross origin dictionary using link element]
     expected: FAIL
+
+  [Browser supports link element with compression-dictionary rel.]
+    expected: FAIL
diff --git a/tests/wpt/meta/fetch/metadata/generated/element-img-environment-change.https.sub.html.ini b/tests/wpt/meta/fetch/metadata/generated/element-img-environment-change.https.sub.html.ini
index 1bb6ca5a948..3d6068202c8 100644
--- a/tests/wpt/meta/fetch/metadata/generated/element-img-environment-change.https.sub.html.ini
+++ b/tests/wpt/meta/fetch/metadata/generated/element-img-environment-change.https.sub.html.ini
@@ -4,13 +4,13 @@
     expected: FAIL
 
   [sec-fetch-site - Cross-site, no attributes]
-    expected: FAIL
+    expected: TIMEOUT
 
   [sec-fetch-site - Same site, no attributes]
-    expected: FAIL
+    expected: NOTRUN
 
   [sec-fetch-site - Same-Origin -> Cross-Site -> Same-Origin redirect, no attributes]
-    expected: FAIL
+    expected: NOTRUN
 
   [sec-fetch-site - Same-Origin -> Same-Site -> Same-Origin redirect, no attributes]
     expected: NOTRUN
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
deleted file mode 100644
index 4ecd6d9f753..00000000000
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[navigation-unload-cross-origin.sub.window.html]
-  [Cross-origin navigation started from unload handler must be ignored]
-    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
new file mode 100644
index 00000000000..7dc346632a4
--- /dev/null
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
@@ -0,0 +1,3 @@
+[navigation-unload-same-origin.window.html]
+  [Same-origin navigation started from unload handler must be ignored]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
new file mode 100644
index 00000000000..7a5fcb79165
--- /dev/null
+++ b/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
@@ -0,0 +1,3 @@
+[traverse_the_history_5.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini b/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
index 2ef0896e3b3..8b8af2b9c2e 100644
--- a/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
+++ b/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
@@ -1,4 +1,3 @@
 [document-base-url-window-initiator-is-not-opener.https.window.html]
-  expected: TIMEOUT
   [window.open() gets base url from initiator not opener.]
     expected: [FAIL, PASS, TIMEOUT]
diff --git a/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini b/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
index 830aeb8ae48..fdc27d37788 100644
--- a/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
+++ b/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html.ini
@@ -1,7 +1,6 @@
 [autofocus-dialog.html]
-  expected: TIMEOUT
   [<dialog> can contain autofocus, without stopping page autofocus content from working]
     expected: FAIL
 
   [<dialog>-contained autofocus element gets focused when the dialog is shown]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index d7d0d3ef89d..24903b5f66f 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,4 +1,4 @@
 [iframe_sandbox_popups_escaping-1.html]
   expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index c6f1e5d7d84..4034793cc72 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-2.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-user-activation-sticky.tentative.sub.window.js.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-user-activation-sticky.tentative.sub.window.js.ini
index 5bccf008873..c2f7bee1885 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-user-activation-sticky.tentative.sub.window.js.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-user-activation-sticky.tentative.sub.window.js.ini
@@ -1,4 +1,3 @@
 [sandbox-top-navigation-user-activation-sticky.tentative.sub.window.html]
-  expected: TIMEOUT
   [Allow top with user activation + user activation]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini b/tests/wpt/meta/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini
new file mode 100644
index 00000000000..b7fe505c37a
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html.ini
@@ -0,0 +1,2 @@
+[select-open-invalidation.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/permission-element/bounded-sizes.tentative.html.ini b/tests/wpt/meta/html/semantics/permission-element/bounded-sizes.tentative.html.ini
index 365e0b46b9b..401de0ab4a1 100644
--- a/tests/wpt/meta/html/semantics/permission-element/bounded-sizes.tentative.html.ini
+++ b/tests/wpt/meta/html/semantics/permission-element/bounded-sizes.tentative.html.ini
@@ -4,3 +4,6 @@
 
   [Properties with values in bounds should not be modified]
     expected: FAIL
+
+  ['Min' properties should not be allowed to go over the maximum allowed values for 'max' properties]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini b/tests/wpt/meta/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
index d10dda7b26a..75e70650007 100644
--- a/tests/wpt/meta/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
+++ b/tests/wpt/meta/html/semantics/permission-element/negative-offset-and-margin.tentative.html.ini
@@ -4,3 +4,9 @@
 
   [Expressions margins/offset should always return at least 0px]
     expected: FAIL
+
+  [Negative margins/offset should be changed to 4px]
+    expected: FAIL
+
+  [Expressions margins/offset should always return at least 4px]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini b/tests/wpt/meta/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini
new file mode 100644
index 00000000000..b30a0787644
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/permission-element/pseudo-elements-in-div.tentative.html.ini
@@ -0,0 +1,2 @@
+[pseudo-elements-in-div.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/permission-element/pseudo-elements.tentative.html.ini b/tests/wpt/meta/html/semantics/permission-element/pseudo-elements.tentative.html.ini
new file mode 100644
index 00000000000..27522074172
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/permission-element/pseudo-elements.tentative.html.ini
@@ -0,0 +1,2 @@
+[pseudo-elements.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini b/tests/wpt/meta/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini
new file mode 100644
index 00000000000..9be41e17bb6
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html.ini
@@ -0,0 +1,2 @@
+[popover-anchor-inset-rule-display.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini b/tests/wpt/meta/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
index 3a219dd898f..390e1e826e8 100644
--- a/tests/wpt/meta/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
+++ b/tests/wpt/meta/html/semantics/selectors/pseudo-classes/readwrite-readonly.html.ini
@@ -19,3 +19,9 @@
 
   [The :read-write pseudo-class must match elements that are inside editing hosts, but not match inputs and textareas inside that aren't]
     expected: FAIL
+
+  [The :read-only pseudo-class must match form-associated custom elements]
+    expected: FAIL
+
+  [The :read-write pseudo-class must match form-associated contenteditable custom elements]
+    expected: FAIL
diff --git a/tests/wpt/meta/streams/readable-streams/from.any.js.ini b/tests/wpt/meta/streams/readable-streams/from.any.js.ini
index 5cd0ec521a9..732613ecb99 100644
--- a/tests/wpt/meta/streams/readable-streams/from.any.js.ini
+++ b/tests/wpt/meta/streams/readable-streams/from.any.js.ini
@@ -80,6 +80,9 @@
   [ReadableStream.from(array), push() to array while reading]
     expected: FAIL
 
+  [ReadableStream.from ignores a null @@asyncIterator]
+    expected: FAIL
+
 
 [from.any.serviceworker.html]
   expected: ERROR
@@ -169,6 +172,9 @@
   [ReadableStream.from(array), push() to array while reading]
     expected: FAIL
 
+  [ReadableStream.from ignores a null @@asyncIterator]
+    expected: FAIL
+
 
 [from.any.shadowrealm.html]
   expected: ERROR
diff --git a/tests/wpt/tests/FileAPI/Blob-methods-from-detached-frame.html b/tests/wpt/tests/FileAPI/Blob-methods-from-detached-frame.html
index 37efd5ed201..78f08e8270e 100644
--- a/tests/wpt/tests/FileAPI/Blob-methods-from-detached-frame.html
+++ b/tests/wpt/tests/FileAPI/Blob-methods-from-detached-frame.html
@@ -27,6 +27,7 @@ promise_test(async () => {
 
     assert_equals(await slicedBlob.text(), "oo");
     assert_equals(charCodeBufferToString(await slicedBlob.arrayBuffer()), "oo");
+    assert_equals(charCodeArrayToString(await slicedBlob.bytes()), "oo");
 
     const reader = slicedBlob.stream().getReader();
     const { value } = await reader.read();
@@ -48,6 +49,14 @@ promise_test(async () => {
     assert_equals(charCodeBufferToString(charCodeBuffer), "bar");
 }, "arrayBuffer()");
 
+promise_test(async () => {
+    const { bytes } = await BlobPrototypeFromDetachedFramePromise;
+    const blob = new Blob(["bar"]);
+
+    const charCodeBytes = await bytes.call(blob);
+    assert_equals(charCodeArrayToString(charCodeBytes), "bar");
+}, "bytes()");
+
 promise_test(async () => {
     const { stream } = await BlobPrototypeFromDetachedFramePromise;
     const blob = new Blob(["baz"]);
diff --git a/tests/wpt/tests/FileAPI/blob/Blob-bytes.any.js b/tests/wpt/tests/FileAPI/blob/Blob-bytes.any.js
new file mode 100644
index 00000000000..5173b3715c8
--- /dev/null
+++ b/tests/wpt/tests/FileAPI/blob/Blob-bytes.any.js
@@ -0,0 +1,45 @@
+// META: title=Blob bytes()
+// META: script=../support/Blob.js
+'use strict';
+
+promise_test(async () => {
+  const input_arr = new TextEncoder().encode("PASS");
+  const blob = new Blob([input_arr]);
+  const uint8array = await blob.bytes();
+  assert_true(uint8array instanceof Uint8Array);
+  assert_equals_typed_array(uint8array, input_arr);
+}, "Blob.bytes()")
+
+promise_test(async () => {
+  const input_arr = new TextEncoder().encode("");
+  const blob = new Blob([input_arr]);
+  const uint8array = await blob.bytes();
+  assert_true(uint8array instanceof Uint8Array);
+  assert_equals_typed_array(uint8array, input_arr);
+}, "Blob.bytes() empty Blob data")
+
+promise_test(async () => {
+  const input_arr = new TextEncoder().encode("\u08B8\u000a");
+  const blob = new Blob([input_arr]);
+  const uint8array = await blob.bytes();
+  assert_equals_typed_array(uint8array, input_arr);
+}, "Blob.bytes() non-ascii input")
+
+promise_test(async () => {
+  const input_arr = [8, 241, 48, 123, 151];
+  const typed_arr = new Uint8Array(input_arr);
+  const blob = new Blob([typed_arr]);
+  const uint8array = await blob.bytes();
+  assert_equals_typed_array(uint8array, typed_arr);
+}, "Blob.bytes() non-unicode input")
+
+promise_test(async () => {
+  const input_arr = new TextEncoder().encode("PASS");
+  const blob = new Blob([input_arr]);
+  const uint8array_results = await Promise.all([blob.bytes(),
+      blob.bytes(), blob.bytes()]);
+  for (let uint8array of uint8array_results) {
+    assert_true(uint8array instanceof Uint8Array);
+    assert_equals_typed_array(uint8array, input_arr);
+  }
+}, "Blob.bytes() concurrent reads")
diff --git a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-002.https.html b/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-002.https.html
deleted file mode 100644
index 0dfaf2ecde5..00000000000
--- a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-002.https.html
+++ /dev/null
@@ -1,34 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<meta http-equiv="Delegate-CH" content="Sec-CH-Width">
-<title>Tests Sec-CH-Width with auto sizes and multiple srcset values</title>
-<link rel="help" href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-width">
-<link rel="help" href="https://html.spec.whatwg.org/#sizes-attributes">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-
-<script>
-  setup({explicit_done: true});
-
-  function run() {
-    test(() => {
-      const testImage = document.getElementsByTagName('img')[0];
-      // Spec: sec-ch-width MUST be an integer greater than or equal to 0.
-      const width = Math.ceil(50 * devicePixelRatio);
-      assert_equals(testImage.naturalWidth, 2 * width);
-      assert_equals(testImage.naturalHeight, 3 * width);
-    }, 'Sec-CH-Width is set for lazy auto sizes');
-    done();
-  }
-</script>
-
-<div style="width: 100px; height: 100px;">
-  <img
-    onload="run()"
-    loading="lazy"
-    sizes="auto"
-    srcset="fail-a 49w, resources/2x3-svg-scaled-by-sec-ch-width.py 50w, fail-b 51w"
-    width="300"
-    height="300"
-    style="width: 50%; height: 50%;">
-</div>
diff --git a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-001.https.html b/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-img.https.html
similarity index 93%
rename from tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-001.https.html
rename to tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-img.https.html
index 1746ea9f1ca..6c565de3ede 100644
--- a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-001.https.html
+++ b/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-img.https.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <meta charset="utf-8">
 <meta http-equiv="Delegate-CH" content="Sec-CH-Width">
-<title>Tests Sec-CH-Width with auto sizes and a single srcset value</title>
+<title>Tests Sec-CH-Width with auto sizes</title>
 <link rel="help" href="https://wicg.github.io/responsive-image-client-hints/#sec-ch-width">
 <link rel="help" href="https://html.spec.whatwg.org/#sizes-attributes">
 <script src="/resources/testharness.js"></script>
diff --git a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-003.https.html b/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-picture.https.html
similarity index 97%
rename from tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-003.https.html
rename to tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-picture.https.html
index 235529d121e..7ac22164629 100644
--- a/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-003.https.html
+++ b/tests/wpt/tests/client-hints/sec-ch-width-auto-sizes-picture.https.html
@@ -24,7 +24,6 @@
 
 <picture>
   <source
-    media="(min-width: 600px)"
     srcset="resources/2x3-svg-scaled-by-sec-ch-width.py 50w"
     sizes="auto"
     width="100"
diff --git a/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html b/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html
new file mode 100644
index 00000000000..228646e0fee
--- /dev/null
+++ b/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>Federated Credential Management API network request tests.</title>
+<link rel="help" href="https://fedidcg.github.io/FedCM">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+
+<body>
+
+<script type="module">
+import {alt_request_options_with_mediation_required,
+        set_alt_fedcm_cookie} from './support/fedcm-helper.sub.js';
+
+// We do not use fedcm_test, because that tries to set document.cookie
+// via set_fedcm_cookie, which is not allowed in a sandboxed document.
+promise_test(async t => {
+  // This test uses a `Content-Security-Policy: sandbox allow-scripts` header
+  // to trigger an opaque origin.
+  assert_equals(window.origin, 'null');
+  await set_alt_fedcm_cookie();
+  const cred = navigator.credentials.get(alt_request_options_with_mediation_required());
+  return promise_rejects_dom(t, 'NetworkError', cred);
+}, "Opaque RP origin should trigger a NetworkError.");
+
+</script>
diff --git a/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html.headers b/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html.headers
new file mode 100644
index 00000000000..9850d21f3c6
--- /dev/null
+++ b/tests/wpt/tests/credential-management/fedcm-opaque-rp-origin.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: sandbox allow-scripts allow-popups allow-popups-to-escape-sandbox
diff --git a/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js.headers b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js.headers
new file mode 100644
index 00000000000..cb762eff806
--- /dev/null
+++ b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js.headers
@@ -0,0 +1 @@
+Access-Control-Allow-Origin: *
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-scope-basic.html b/tests/wpt/tests/css/css-anchor-position/anchor-scope-basic.html
new file mode 100644
index 00000000000..147aef8c764
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-scope-basic.html
@@ -0,0 +1,254 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: Basic anchor-scope behavior</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  .scope-all { anchor-scope: all; }
+  .scope-a { anchor-scope: --a; }
+  .scope-b { anchor-scope: --b; }
+  .scope-ab { anchor-scope: --a, --b; }
+
+  .anchor-a { anchor-name: --a; }
+  .anchor-b { anchor-name: --b; }
+  .anchor-a, .anchor-b {
+    background: skyblue;
+    height: 10px;
+  }
+
+  .anchored-a { position-anchor: --a; }
+  .anchored-b { position-anchor: --b; }
+  .anchored-a, .anchored-b {
+    position: absolute;
+    top: anchor(bottom);
+    left: anchor(left);
+    width: 5px;
+    height: 5px;
+    background: coral;
+  }
+
+  /* Containing block */
+  main {
+    position: relative;
+    width: 100px;
+    height: 100px;
+    border: 1px solid black;
+  }
+</style>
+<script>
+  function inflate(t, template_element) {
+    if (!template_element.hasAttribute('debug')) {
+      t.add_cleanup(() => main.replaceChildren());
+    }
+    main.append(template_element.content.cloneNode(true));
+  }
+</script>
+
+<main id=main>
+</main>
+
+<template id=test_scope_all_common_ancestor>
+  <div class=scope-all>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div><!--A-->
+    <div class=anchored-a></div>
+  </div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_all_common_ancestor);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+  }, 'anchor-scope:all on common ancestor');
+</script>
+
+<template id=test_scope_named_common_ancestor>
+  <div class=scope-a>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div><!--A-->
+    <div class=anchored-a></div>
+  </div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_named_common_ancestor);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+  }, 'anchor-scope:--a on common ancestor');
+</script>
+
+<template id=test_scope_all_sibling>
+  <div class=anchor-a></div>
+  <div class=anchor-a></div><!--A-->
+  <div class=scope-all>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div>
+  </div>
+  <div class=anchored-a></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_all_sibling);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+  }, 'anchor-scope:all on sibling');
+</script>
+
+<template id=test_scope_all_multiple>
+  <div class=anchor-b></div><!--B-->
+  <div class=anchor-a></div><!--A-->
+  <div class=scope-all>
+    <div class=anchor-b></div>
+    <div class=anchor-a></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_all_multiple);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '10px');
+  }, 'anchor-scope:all scopes multiple names');
+</script>
+
+<template id=test_scope_ab>
+  <div class=anchor-b></div><!--B-->
+  <div class=anchor-a></div><!--A-->
+  <div class=scope-ab>
+    <div class=anchor-b></div>
+    <div class=anchor-a></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_ab);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '10px');
+  }, 'anchor-scope:--a,--b scopes --a and --b');
+</script>
+
+<template id=test_scope_a>
+  <div class=anchor-b></div>
+  <div class=anchor-a></div><!--A-->
+  <div class=scope-a>
+    <div class=anchor-b></div><!--B-->
+    <div class=anchor-a></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_a);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '30px');
+  }, 'anchor-scope:--a scopes only --a');
+</script>
+
+<template id=test_scope_b>
+  <div class=anchor-b></div><!--B-->
+  <div class=anchor-a></div>
+  <div class=scope-b>
+    <div class=anchor-b></div>
+    <div class=anchor-a></div><!--A-->
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_b);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '10px');
+  }, 'anchor-scope:--b scopes only --b');
+</script>
+
+<template id=test_out_of_flow_anchors>
+  <style>
+    .anchor-a, .anchor-b {
+      position: absolute;
+      width: 5px;
+      height: 5px;
+    }
+  </style>
+  <div class=anchor-b style='left:10px'></div>
+  <div class=anchor-a style='left:20px'></div><!--A-->
+  <div class=scope-a>
+    <div class=anchor-b style='left:30px'></div><!--B-->
+    <div class=anchor-a style='left:40px'></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_out_of_flow_anchors);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '5px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).left, '20px');
+
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '5px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).left, '30px');
+  }, 'anchor-scope:--a scopes only --a (out-of-flow anchors)');
+</script>
+
+<!-- Out-of-flow anchor within anchor-scope:--a -->
+<template id=test_mixed_flow_anchors>
+  <style>
+    .abs {
+      position: absolute;
+      width: 5px;
+      height: 5px;
+    }
+  </style>
+  <div class=anchor-b></div>
+  <div class=anchor-a></div><!--A-->
+  <div class=scope-a>
+    <div class=anchor-b></div><!--B-->
+    <div class='anchor-a abs' style='top:50px'></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_mixed_flow_anchors);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).left, '0px');
+
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '30px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).left, '0px');
+  }, 'anchor-scope:--a scopes only --a (both out-of-flow and in-flow anchors)');
+</script>
+
+<!-- In-flow anchor within anchor-scope:--a -->
+<template id=test_mixed_flow_anchors_reverse>
+  <style>
+    .abs {
+      position: absolute;
+      width: 5px;
+      height: 5px;
+    }
+  </style>
+  <div class=anchor-b></div>
+  <div class='anchor-a abs' style='top:50px'></div><!--A-->
+  <div class=scope-a>
+    <div class=anchor-b></div><!--B-->
+    <div class=anchor-a></div>
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_mixed_flow_anchors_reverse);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '55px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).left, '0px');
+
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).left, '0px');
+  }, 'anchor-scope:--a scopes only --a (both out-of-flow and in-flow anchors, reverse)');
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-scope-dynamic.html b/tests/wpt/tests/css/css-anchor-position/anchor-scope-dynamic.html
new file mode 100644
index 00000000000..33a25cfce6b
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-scope-dynamic.html
@@ -0,0 +1,132 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: anchor-scope appearing/disappearing dynamically</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  .scope-all { anchor-scope: all; }
+  .scope-a { anchor-scope: --a; }
+  .scope-b { anchor-scope: --b; }
+  .scope-ab { anchor-scope: --a, --b; }
+
+  .anchor-a { anchor-name: --a; }
+  .anchor-b { anchor-name: --b; }
+  .anchor-a, .anchor-b {
+    background: skyblue;
+    height: 10px;
+  }
+
+  .anchored-a { position-anchor: --a; }
+  .anchored-b { position-anchor: --b; }
+  .anchored-a, .anchored-b {
+    position: absolute;
+    top: anchor(bottom);
+    left: anchor(left);
+    width: 5px;
+    height: 5px;
+    background: coral;
+  }
+
+  /* Containing block */
+  main {
+    position: relative;
+    width: 100px;
+    height: 100px;
+    border: 1px solid black;
+  }
+</style>
+<script>
+  function inflate(t, template_element) {
+    if (!template_element.hasAttribute('debug')) {
+      t.add_cleanup(() => main.replaceChildren());
+    }
+    main.append(template_element.content.cloneNode(true));
+  }
+</script>
+
+<main id=main>
+</main>
+
+<template id=test_scope_all_dynamic>
+  <div class=anchor-a></div>
+  <div class=anchor-a></div><!--A (after change)-->
+  <div id=dynamic>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div><!--A (initially)-->
+  </div>
+  <div class=anchored-a></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_all_dynamic);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    dynamic.style.anchorScope = 'all';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    dynamic.style.anchorScope = '';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+  }, 'anchor-scope:all appearing dynamically');
+</script>
+
+<template id=test_scope_named_dynamic>
+  <div class=anchor-a></div>
+  <div class=anchor-a></div><!--A (after change)-->
+  <div id=dynamic>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div><!--A (initially)-->
+  </div>
+  <div class=anchored-a></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_named_dynamic);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    dynamic.style.anchorScope = '--a';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    dynamic.style.anchorScope = '';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+  }, 'anchor-scope:--a appearing dynamically');
+</script>
+
+<template id=test_scope_named_unrelated_dynamic>
+  <div class=anchor-a></div>
+  <div class=anchor-a></div><!--A (after change)-->
+  <div id=dynamic>
+    <div class=anchor-a></div>
+    <div class=anchor-a></div><!--A (initially)-->
+  </div>
+  <div class=anchored-a></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_named_unrelated_dynamic);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    dynamic.style.anchorScope = '--b';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    dynamic.style.anchorScope = '';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+  }, 'anchor-scope:--b appearing dynamically (--b never referenced)');
+</script>
+
+<template id=test_scope_a_dynamic>
+  <div class=anchor-b></div>
+  <div class=anchor-a></div><!--A (after change)-->
+  <div id=dynamic>
+    <div class=anchor-b></div><!--B-->
+    <div class=anchor-a></div><!--A (initially)-->
+  </div>
+  <div class=anchored-a></div>
+  <div class=anchored-b></div>
+</template>
+<script>
+  test((t) => {
+    inflate(t, test_scope_a_dynamic);
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '30px');
+    dynamic.style.anchorScope = '--a';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '20px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '30px');
+    dynamic.style.anchorScope = '';
+    assert_equals(getComputedStyle(main.querySelector('.anchored-a')).top, '40px');
+    assert_equals(getComputedStyle(main.querySelector('.anchored-b')).top, '30px');
+  }, 'anchor-scope:--a appearing dynamically scopes only --a');
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-scope-shadow.tentative.html b/tests/wpt/tests/css/css-anchor-position/anchor-scope-shadow.tentative.html
new file mode 100644
index 00000000000..375f4ca6f65
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-scope-shadow.tentative.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: anchor-scope and Shadow DOM</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/10325">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=host>
+  <template shadowrootmode=open>
+    <style>
+      ::slotted(.outer_anchored), .inner_anchored {
+        background: coral;
+        position: absolute;
+        top: anchor(bottom, 1px);
+        position-anchor: --a;
+        width: 5px;
+        height: 5px;
+      }
+      .anchor {
+        background: skyblue;
+        height: 10px;
+        anchor-name: --a;
+      }
+      .cb {
+        position: relative;
+        width: 200px;
+        height: 200px;
+        border: 1px solid black;
+      }
+      .scope {
+        anchor-scope: --a;
+      }
+    </style>
+    <div class=cb>
+      <div class=anchor></div>
+      <div class=scope>
+        <div class=anchor></div>
+        <slot></slot><!-- .outer_anchored appears here in the flat tree-->
+      </div>
+      <div class=inner_anchored></div>
+    </div>
+  </template>
+  <div class=outer_anchored></div>
+</div>
+<script>
+  test((t) => {
+    // The outer_anchored element is slotted into the <slot> in
+    // the shadow tree. It should be in the same anchor-scope
+    // as the second .anchor element.
+    let outer_anchored = document.querySelector('.outer_anchored');
+    assert_equals(getComputedStyle(outer_anchored).top, '20px');
+
+    // The inner_anchored element exists directly in the shadow tree,
+    // and can not see the second .anchor since it's hidden behind
+    // an anchor-scope.
+    let inner_anchored = host.shadowRoot.querySelector('.inner_anchored');
+    assert_equals(getComputedStyle(inner_anchored).top, '10px');
+  }, 'anchor-scope scopes to the flat tree');
+</script>
+
diff --git a/tests/wpt/tests/css/css-anchor-position/grid-anchor-center-crash.html b/tests/wpt/tests/css/css-anchor-position/grid-anchor-center-crash.html
new file mode 100644
index 00000000000..bab4eed6b66
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/grid-anchor-center-crash.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<link rel="help" href="https://issues.chromium.org/issues/341928664">
+<div style="display: grid; position: relative;">
+  <div style="position: absolute; align-self: anchor-center;"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-computed.html b/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-computed.html
new file mode 100644
index 00000000000..d595537a720
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-computed.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning Test: Computed anchor-scope</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<script src="/css/support/inheritance-testcommon.js"></script>
+<div id="container">
+  <div id="target"></div>
+</div>
+<script>
+  test_computed_value("anchor-scope", "none");
+  test_computed_value("anchor-scope", "initial", "none");
+  test_computed_value("anchor-scope", "all");
+  test_computed_value("anchor-scope", "--a");
+  test_computed_value("anchor-scope", "--a, --b");
+  test_computed_value("anchor-scope", "--a, --b, --c");
+
+  assert_not_inherited("anchor-scope", "none", "all");
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-parsing.html b/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-parsing.html
new file mode 100644
index 00000000000..bc24c78722b
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/parsing/anchor-scope-parsing.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning Test: Parsing of anchor-scope</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<div id="target"></div>
+<script>
+  test_valid_value("anchor-scope", "initial");
+  test_valid_value("anchor-scope", "inherit");
+  test_valid_value("anchor-scope", "unset");
+  test_valid_value("anchor-scope", "revert");
+  test_valid_value("anchor-scope", "none");
+  test_valid_value("anchor-scope", "all");
+  test_valid_value("anchor-scope", "--a");
+  test_valid_value("anchor-scope", "--a, --b");
+  test_valid_value("anchor-scope", "--a, --b, --c");
+
+  test_invalid_value("anchor-scope", "--a none");
+  test_invalid_value("anchor-scope", "none --a");
+  test_invalid_value("anchor-scope", "none all");
+  test_invalid_value("anchor-scope", "--a --b");
+  test_invalid_value("anchor-scope", "a, b, c");
+  test_invalid_value("anchor-scope", "");
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/position-try-invalid-anchor-crash.html b/tests/wpt/tests/css/css-anchor-position/position-try-invalid-anchor-crash.html
new file mode 100644
index 00000000000..dc09bb4b3f8
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/position-try-invalid-anchor-crash.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<link rel=help href="https://drafts.csswg.org/css-anchor-1/#fallback">
+<style>
+@position-try --f1 { top: 50px; }
+</style>
+<div style="position: absolute; position-anchor: --x; position-try-options: --f1">INVALID ANCHOR</div>
diff --git a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
index 3b1b0921592..765485fd135 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
@@ -764,28 +764,28 @@
   }
 
   // Test origin colors with different color spaces, going both to and from srgb.
-  fuzzy_test_computed_color(`color(from color(srgb-linear 0.25 0.5 0.75) srgb r g b)`, `color(srgb 0.537121 0.735394 0.880852)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) srgb-linear r g b)`, `color(srgb-linear 0.050864 0.213993 0.522484)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(display-p3 0.25 0.5 0.75) srgb r g b)`, `color(srgb 0.123874 0.507355 0.771198)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) display-p3 r g b)`, `color(display-p3 0.313084 0.494041 0.730118)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(a98-rgb 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.153808 0.503925 0.763874)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) a98-rgb r g b)`, `color(a98-rgb 0.346851 0.496124 0.736271)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(prophoto-rgb 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.510605 0.612396 0.825333)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) prophoto-rgb r g b)`, `color(prophoto-rgb 0.374905 0.416401 0.663692)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(rec2020 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.280102 0.565536 0.79958)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) rec2020 r g b)`, `color(rec2020 0.331976 0.440887 0.696358)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(xyz-d50 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.660065 0.874863 0.981117)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d50 x y z)`, `color(xyz-d50 0.179349 0.196389 0.394585)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(xyz-d65 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.611881 0.868732 0.856899)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d65 x y z)`, `color(xyz-d65 0.191791 0.201562 0.523057)`, 0.001);
-  fuzzy_test_computed_color(`lab(from color(srgb 0.25 0.5 0.75) l a b)`, `lab(51.4265 -5.21401 -40.1491)`, 0.02); // Larger values means larger epsilon.
-  fuzzy_test_computed_color(`color(from lab(67.5345 -8.6911 -41.6019) srgb r g b)`, `color(srgb 0.382744 0.672806 0.938545)`, 0.001);
-  fuzzy_test_computed_color(`oklab(from color(srgb 0.25 0.5 0.75) l a b)`, `oklab(0.585502 -0.0393846 -0.111503)`, 0.001);
-  fuzzy_test_computed_color(`color(from oklab(72.322% -0.0465 -0.1150) srgb r g b)`, `color(srgb 0.382504 0.672783 0.938919)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb-linear 0.25 0.5 0.75) srgb r g b)`, `color(srgb 0.537099 0.735357 0.880825)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) srgb-linear r g b)`, `color(srgb-linear 0.0508761 0.214041 0.522522)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(display-p3 0.25 0.5 0.75) srgb r g b)`, `color(srgb 0.124076 0.507346 0.771127)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) display-p3 r g b)`, `color(display-p3 0.313005 0.494105 0.730151)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(a98-rgb 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.153577 0.503993 0.764016)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) a98-rgb r g b)`, `color(a98-rgb 0.346741 0.496104 0.736143)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(prophoto-rgb 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.510555 0.612317 0.825249)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) prophoto-rgb r g b)`, `color(prophoto-rgb 0.374928 0.416497 0.663803)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(rec2020 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.280036 0.565528 0.79951)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) rec2020 r g b)`, `color(rec2020 0.331998 0.440976 0.696422)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(xyz-d50 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.660025 0.874825 0.981099)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d50 x y z)`, `color(xyz-d50 0.179385 0.196438 0.39462)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(xyz-d65 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.611728 0.868673 0.856817)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d65 x y z)`, `color(xyz-d65 0.191824 0.201616 0.52317)`, 0.001);
+  fuzzy_test_computed_color(`lab(from color(srgb 0.25 0.5 0.75) l a b)`, `lab(51.4321 -5.22825 -40.1438)`, 0.02); // Larger values means larger epsilon.
+  fuzzy_test_computed_color(`color(from lab(67.5345 -8.6911 -41.6019) srgb r g b)`, `color(srgb 0.382862 0.672716 0.938469)`, 0.001);
+  fuzzy_test_computed_color(`oklab(from color(srgb 0.25 0.5 0.75) l a b)`, `oklab(0.58555 -0.039415 -0.111505)`, 0.001);
+  fuzzy_test_computed_color(`color(from oklab(72.322% -0.0465 -0.1150) srgb r g b)`, `color(srgb 0.382612 0.672697 0.938782)`, 0.001);
   fuzzy_test_computed_color(`lch(from color(srgb 0.25 0.5 0.75) l c h)`, `lch(51.4321 40.4828 262.58)`, 0.02); // Larger values means larger epsilon.
-  fuzzy_test_computed_color(`color(from lch(67.5345% 42.5 258.2) srgb r g b)`, `color(srgb 0.382744 0.672806 0.938545)`, 0.001);
-  fuzzy_test_computed_color(`oklch(from color(srgb 0.25 0.5 0.75) l c h)`, `oklch(0.585502 0.118254 250.546)`, 0.02); // Larger values means larger epsilon.
-  fuzzy_test_computed_color(`color(from oklch(72.322% 0.12403 247.996) srgb r g b)`, `color(srgb 0.382631 0.672756 0.938904)`, 0.001);
+  fuzzy_test_computed_color(`color(from lch(67.5345% 42.5 258.2) srgb r g b)`, `color(srgb 0.382863 0.672716 0.938469)`, 0.001);
+  fuzzy_test_computed_color(`oklch(from color(srgb 0.25 0.5 0.75) l c h)`, `oklch(0.58555 0.118266 250.532)`, 0.02); // Larger values means larger epsilon.
+  fuzzy_test_computed_color(`color(from oklch(72.322% 0.12403 247.996) srgb r g b)`, `color(srgb 0.382741 0.672675 0.938768)`, 0.001);
 
   // Test that conversion are relatively lossless.
   for (const colorSpace of ["xyz-d50", "xyz-d65"]) {
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-relative-color.html b/tests/wpt/tests/css/css-color/parsing/color-valid-relative-color.html
index eb730b51c57..7b44b4f0bfc 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-relative-color.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-relative-color.html
@@ -119,7 +119,7 @@
         fuzzy_test_valid_color(`${rgbFunction}(from rgb(20% 40% 60% / none) r g b / alpha)`, `color(srgb 0.2 0.4 0.6 / 0)`);
 
         // Testing with 'currentColor'
-        fuzzy_test_valid_color(`${rgbFunction}(from currentColor r g b)`, `rgb(from currentColor r g b)`);
+        fuzzy_test_valid_color(`${rgbFunction}(from currentColor r g b)`, `rgb(from currentcolor r g b)`);
 
         // color-mix
         fuzzy_test_valid_color(`${rgbFunction}(from color-mix(in srgb, red, red) r g b / alpha)`, `color(srgb 1 0 0)`);
@@ -202,7 +202,7 @@
         fuzzy_test_valid_color(`${hslFunction}(from hsl(none 20% 50% / .5) h s l / alpha)`, `color(srgb 0.6 0.4 0.4 / 0.5)`);
 
         // Testing with 'currentColor'
-        fuzzy_test_valid_color(`${hslFunction}(from currentColor h s l)`, `hsl(from currentColor h s l)`);
+        fuzzy_test_valid_color(`${hslFunction}(from currentColor h s l)`, `hsl(from currentcolor h s l)`);
 
         // color-mix
         fuzzy_test_valid_color(`${hslFunction}(from color-mix(in srgb, red, red) h s l / alpha)`, `color(srgb 1 0 0)`);
@@ -279,7 +279,7 @@
     fuzzy_test_valid_color(`hwb(from hwb(none 20% 50% / .5) h w b / alpha)`, `color(srgb 0.5 0.2 0.2 / 0.5)`);
 
     // Testing with 'currentColor'
-    fuzzy_test_valid_color(`hwb(from currentColor h w b)`, `hwb(from currentColor h w b)`);
+    fuzzy_test_valid_color(`hwb(from currentColor h w b)`, `hwb(from currentcolor h w b)`);
 
     // color-mix
     fuzzy_test_valid_color(`hwb(from color-mix(in srgb, red, red) h w b / alpha)`, `color(srgb 1 0 0)`);
@@ -350,7 +350,7 @@
     fuzzy_test_valid_color(`lab(from lab(25 20 50 / none) l a b / alpha)`, `lab(25 20 50 / 0)`);
 
     // Testing with 'currentColor'
-    fuzzy_test_valid_color(`lab(from currentColor l a b)`, `lab(from currentColor l a b)`);
+    fuzzy_test_valid_color(`lab(from currentColor l a b)`, `lab(from currentcolor l a b)`);
 
   // color-mix
     fuzzy_test_valid_color(`lab(from color-mix(in lab, lab(25 20 50), lab(25 20 50)) l a b / alpha)`, `lab(25 20 50)`);
@@ -421,7 +421,7 @@
     fuzzy_test_valid_color(`oklab(from oklab(0.25 0.2 0.5 / none) l a b / alpha)`, `oklab(0.25 0.2 0.5 / 0)`);
 
     // Testing with 'currentColor'
-    fuzzy_test_valid_color(`oklab(from currentColor l a b)`, `oklab(from currentColor l a b)`);
+    fuzzy_test_valid_color(`oklab(from currentColor l a b)`, `oklab(from currentcolor l a b)`);
 
     // color-mix
     fuzzy_test_valid_color(`oklab(from color-mix(in oklab, oklab(0.25 0.2 0.5), oklab(0.25 0.2 0.5)) l a b / alpha)`, `oklab(0.25 0.2 0.5)`);
@@ -501,7 +501,7 @@
     fuzzy_test_valid_color(`lch(from lch(0.7 45 30 / none) l c h / alpha)`,                             `lch(0.7 45 30 / 0)`);
 
     // Testing with 'currentColor'
-    fuzzy_test_valid_color(`lch(from currentColor) l c h)`, `lch(from currentColor) l c h)`);
+    fuzzy_test_valid_color(`lch(from currentColor l c h)`, `lch(from currentcolor l c h)`);
 
     // color-mix
     fuzzy_test_valid_color(`lch(from color-mix(in lch, lch(70 45 30), lch(70 45 30)) l c h / alpha)`, `lch(70 45 30)`);
@@ -585,7 +585,7 @@
     fuzzy_test_valid_color(`oklch(from color-mix(in oklch, oklch(0.7 0.45 30), oklch(0.7 0.45 30)) l c h / alpha)`, `oklch(0.7 0.45 30)`);
 
     // Testing with 'currentColor'
-    fuzzy_test_valid_color(`oklch(from currentColor l c h)`, `oklch(from currentColor l c h)`);
+    fuzzy_test_valid_color(`oklch(from currentColor l c h)`, `oklch(from currentcolor l c h)`);
 
     for (const colorSpace of [ "srgb", "srgb-linear", "a98-rgb", "rec2020", "prophoto-rgb", "display-p3" ]) {
         // Testing no modifications.
@@ -674,7 +674,7 @@
         fuzzy_test_valid_color(`color(from color(${colorSpace} 0.7 0.5 0.3 / none) ${colorSpace} r g b / alpha)`,               `color(${colorSpace} 0.7 0.5 0.3 / 0)`);
 
         // Testing with 'currentColor'
-        fuzzy_test_valid_color(`color(from currentColor ${colorSpace} r g b)`,                                                  `color(from currentColor ${colorSpace} r g b)`);
+        fuzzy_test_valid_color(`color(from currentColor ${colorSpace} r g b)`,                                                  `color(from currentcolor ${colorSpace} r g b)`);
 
         // color-mix
         fuzzy_test_valid_color(`color(from color-mix(in xyz, color(${colorSpace} 0.7 0.5 0.3), color(${colorSpace} 0.7 0.5 0.3)) ${colorSpace} r g b / alpha)`, `color(${colorSpace} 0.7 0.5 0.3)`);
@@ -740,7 +740,7 @@
         fuzzy_test_valid_color(`color(from color(${colorSpace} 7 -20.5 100 / none) ${colorSpace} x y z / alpha)`,               `color(${resultColorSpace} 7 -20.5 100 / 0)`);
 
         // Testing with 'currentColor'
-        fuzzy_test_valid_color(`color(from currentColor ${colorSpace} x y z)`,                                                  `color(from currentColor ${colorSpace} x y z)`);
+        fuzzy_test_valid_color(`color(from currentColor ${colorSpace} x y z)`,                                                  `color(from currentcolor ${resultColorSpace} x y z)`);
 
         // color-mix
         fuzzy_test_valid_color(`color(from color-mix(in xyz, color(${colorSpace} 0.7 0.5 0.3), color(${colorSpace} 0.7 0.5 0.3)) ${colorSpace} x y z / alpha)`, `color(${resultColorSpace} 0.7 0.5 0.3)`);
@@ -763,6 +763,10 @@
     fuzzy_test_valid_color(`lch(from var(--mycolor) l 0 h)`);
     fuzzy_test_valid_color(`var(--mygray)`);
     fuzzy_test_valid_color(`lch(from var(--mygray) l 30 h)`);
+
+    // Ensure that converting between legacy and modern sRGB color spaces work as expected.
+    fuzzy_test_valid_color(`color(from rebeccapurple srgb r g b)`, `color(srgb 0.4 0.2 0.6)`, 0.01);
+    fuzzy_test_valid_color(`rgb(from color(srgb 0.4 0.2 0.6) r g b)`, `color(srgb 0.4 0.2 0.6)`, 0.01);
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-color/relative-currentcolor-rgb-02.html b/tests/wpt/tests/css/css-color/relative-currentcolor-rgb-02.html
index 603938d0dbd..b5ccce19f99 100644
--- a/tests/wpt/tests/css/css-color/relative-currentcolor-rgb-02.html
+++ b/tests/wpt/tests/css/css-color/relative-currentcolor-rgb-02.html
@@ -13,7 +13,7 @@ div {
   background-color: rgb(from currentColor g r b);
 }
 div div {
-  color: #7F0000;
+  color: #800000;
   background-color: inherit;
 }
 </style>
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed.html
index 65b501de1bf..f771907091f 100644
--- a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed.html
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed.html
@@ -21,7 +21,18 @@
 .auto { content-visibility: auto; }
 </style>
 
+<script>
+let contentattrfired = false;
+
+function contentattrDidFire() {
+  contentattrfired = true;
+}
+
+</script>
+
 <div id=upper></div>
+<div id=attrtest></div>
+<div id=contentattrtest oncontentvisibilityautostatechange="contentattrDidFire()" class=auto></div>
 <div class=spacer></div>
 <div id=middle></div>
 <div class=spacer></div>
@@ -40,6 +51,18 @@ promise_test(t => new Promise(async (resolve, reject) => {
   upper.classList.add("auto");
 }), "ContentVisibilityAutoStateChange fires when relevant element gains `content-visibility:auto`");
 
+promise_test(t => new Promise(async (resolve, reject) => {
+  let shouldSkip = false;
+  const listener = (e) => {
+    if (!e.skipped)
+      resolve();
+  };
+
+  attrtest.oncontentvisibilityautostatechange = listener;
+  t.add_cleanup(() => { attrtest.oncontentvisibilityautostatechange = () => {} });
+  attrtest.classList.add("auto");
+}), "ContentVisibilityAutoStateChange fires when relevant element gains `content-visibility:auto` (oncontentvisibilityautostatechange syntax)");
+
 promise_test(t => new Promise(async (resolve, reject) => {
   let shouldSkip = false;
   const listener = (e) => {
@@ -54,6 +77,14 @@ promise_test(t => new Promise(async (resolve, reject) => {
   lower.classList.add("auto");
 }), "ContentVisibilityAutoStateChange fires when not relevant element gains `content-visibility:auto`");
 
+async_test(t => {
+  requestAnimationFrame(() => requestAnimationFrame(() => {
+    t.step(() => assert_true(contentattrfired, "contentattrfired"));
+    t.done();
+  }));
+
+}, "ContentVisibilityAutoStateChange content attribute test");
+
 promise_test(t => new Promise(async (resolve, reject) => {
   await new Promise((waited, _) => {
     requestAnimationFrame(() => requestAnimationFrame(waited));
diff --git a/tests/wpt/tests/css/css-display/accessibility/display-contents-role-and-label.html b/tests/wpt/tests/css/css-display/accessibility/display-contents-role-and-label.html
index 6b5453e9f64..d7f337c557a 100644
--- a/tests/wpt/tests/css/css-display/accessibility/display-contents-role-and-label.html
+++ b/tests/wpt/tests/css/css-display/accessibility/display-contents-role-and-label.html
@@ -186,18 +186,18 @@
   </ol>
 
   <div role="list" style="display: contents;" data-expectedrole="list" data-testname="div with list role and display: contents has list role" class="ex-role">
-    <div role="listitem" data-expectedrole="listitem" data-expectedlabel="x" data-testname="div with listitem role, as child of div with display: contents, has listitem role" class="ex-role-and-label">x</div>
+    <div role="listitem" data-expectedrole="listitem" data-testname="div with listitem role, as child of div with display: contents, has listitem role" class="ex-role">x</div>
     <div>y</div>
   </div>
 
   <div role="list" style="display: contents;" data-expectedrole="list" data-testname="div with list role and display: contents has list role (child div with listitem role has display: contents)" class="ex-role">
     <div>x</div>
-    <div role="listitem" style="display: contents;" data-expectedrole="listitem" data-expectedlabel="y" data-testname="div with listitem role (as child of div with list role), both with display: contents, has listitem role" class="ex-role-and-label">y</div>
+    <div role="listitem" style="display: contents;" data-expectedrole="listitem" data-testname="div with listitem role (as child of div with list role), both with display: contents, has listitem role" class="ex-role">y</div>
   </div>
 
   <div role="list">
     <div>x</div>
-    <div role="listitem" style="display: contents;" data-expectedrole="listitem" data-expectedlabel="y" data-testname="div with listitem role with display: contents, as child of div with list role, has listitem role" class="ex-role-and-label">y</div>
+    <div role="listitem" style="display: contents;" data-expectedrole="listitem"  data-testname="div with listitem role with display: contents, as child of div with list role, has listitem role" class="ex-role">y</div>
   </div>
 
   <!-- Lists: description/definition lists -> wpt/html-aam/roles.html -->
diff --git a/tests/wpt/tests/css/css-fonts/variable-in-feature-crash.html b/tests/wpt/tests/css/css-fonts/variable-in-feature-crash.html
new file mode 100644
index 00000000000..0d296b3d9ad
--- /dev/null
+++ b/tests/wpt/tests/css/css-fonts/variable-in-feature-crash.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS value parser: Crash with blocks in font-feature-settings</title>
+    <link rel="help" href="https://crbug.com/341349803">
+    <style>#a{font-feature-settings:var(--foo)}</style>
+  </head>
+  <body>
+    <p>Test passes if it does not crash.</p>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-fonts/variable-in-font-variation-settings.html b/tests/wpt/tests/css/css-fonts/variable-in-font-variation-settings.html
new file mode 100644
index 00000000000..53e9968e49e
--- /dev/null
+++ b/tests/wpt/tests/css/css-fonts/variable-in-font-variation-settings.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS value parser: Accept a var in font-variation-settings</title>
+<link rel="help" href="https://crbug.com/342078742">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>div{--foo:"wght" 850;font-variation-settings:var(--foo)}</style>
+<div></div>
+<script>
+  const div = document.querySelector("div");
+  test(function() {
+    assert_equals(getComputedStyle(div).fontVariationSettings, "\"wght\" 850");
+  }, "var() in font-variation-settings");
+</script>
diff --git a/tests/wpt/tests/css/css-grid/grid-important.html b/tests/wpt/tests/css/css-grid/grid-important.html
new file mode 100644
index 00000000000..42896ed200d
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/grid-important.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Grid: !important flag parsing</title>
+    <link rel="help" href="https://crbug.com/340100643">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <div id="target" style="grid: 'myArea myArea . . .' 'myArea myArea . . .' !important">Some text.</div>
+  </body>
+  <script>
+test(() => {
+  assert_equals(target.style.grid, '"myArea myArea . . ." "myArea myArea . . ."');
+});
+  </script>
+</html>
diff --git a/tests/wpt/tests/css/css-grid/subgrid/dynamic-subgridded-item-height.html b/tests/wpt/tests/css/css-grid/subgrid/dynamic-subgridded-item-height.html
new file mode 100644
index 00000000000..46e41d23355
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/subgrid/dynamic-subgridded-item-height.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Grid Test: Subgridded item changing its height dynamically</title>
+<link rel="author" title="Ethan Jimenez" href="mailto:ethavar@microsoft.com">
+<link rel="help" href="https://drafts.csswg.org/css-grid-2/#algo-overview">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<style>
+.wrapper {
+  background: red;
+  height: 100px;
+  width: 100px;
+}
+.grid {
+  display: grid;
+  grid-template-columns: 100px;
+}
+.subgrid {
+  display: grid;
+  grid-template-columns: subgrid;
+  overflow: clip;
+}
+.container { background: green }
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div class="wrapper">
+  <div class="grid">
+    <div class="subgrid">
+      <div class="container">
+        <div id="inner"></div>
+      </div>
+    </div>
+  </div>
+</div>
+<script>
+document.body.offsetHeight;
+document.getElementById('inner').style.height = '100px';
+</script>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-accumulation-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-accumulation-001.html
new file mode 100644
index 00000000000..08eedbdbfeb
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-accumulation-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>Test choosing the innermost for `text-box-trim` for requested trim metric</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-start-001-ref.html?class=text">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  block-size: 100px;
+  background: lightgray;
+}
+.target {
+  font-family: Ahem;
+  font-size: 100px;
+  line-height: 2;
+  text-box-trim: start;
+  text-box-edge: leading;
+}
+.inner {
+  text-box-edge: text;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">
+  <!--
+    When the element that has `text-box-trim` and `.inner` has different
+    `text-box-edge` values, use the innermost one.
+    https://github.com/w3c/csswg-drafts/issues/5426
+  -->
+  <div class="inner">A</div>
+</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001-ref.html
new file mode 100644
index 00000000000..8f089635fae
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: Ahem;
+  font-size: 100px;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">A</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001.html
new file mode 100644
index 00000000000..5cd25060934
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-001.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-dynamic-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: Ahem;
+  font-size: 100px;
+  line-height: 2;
+  text-box-edge: text;
+}
+.trim { text-box-trim: both; }
+</style>
+<div class="spacer"></div>
+<div class="target">A</div>
+<div class="spacer"></div>
+<script>
+document.body.offsetTop;
+for (const target of document.getElementsByClassName('target')) {
+  target.classList.add('trim');
+}
+</script>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-002.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-002.html
new file mode 100644
index 00000000000..a921d4d0caa
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-dynamic-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-dynamic-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: Ahem;
+  font-size: 100px;
+  line-height: 2;
+  text-box-trim: both;
+}
+.text { text-box-edge: text; }
+</style>
+<div class="spacer"></div>
+<div class="target">A</div>
+<div class="spacer"></div>
+<script>
+document.body.offsetTop;
+for (const target of document.getElementsByClassName('target')) {
+  target.classList.add('text');
+}
+</script>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html
new file mode 100644
index 00000000000..433670fda11
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<script src="resources/variant-class.js"></script>
+<style>
+@font-face {
+  font-family: test-font;
+  src: url(resources/cap-x-height.ttf);
+}
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: test-font;
+  font-size: 100px;
+  line-height: 2;
+}
+.offset {
+  position: relative;
+}
+.vrl { writing-mode: vertical-rl; }
+.vlr { writing-mode: vertical-lr; }
+.text .target { line-height: 150px; }
+.text .offset { inset-block-start: 25px; }
+.alphabetic .target { line-height: 130px; }
+.alphabetic .offset { inset-block-start: 35px;}
+.cap .target { line-height: 130px; }
+.cap .offset { inset-block-start: -35px; }
+.ex .target { line-height: 90px; }
+.ex .offset { inset-block-start: -55px; }
+.vlr.cap .offset { inset-block-start: 35px; }
+.vlr.ex .offset { inset-block-start: 55px; }
+</style>
+<div class="spacer"></div>
+<div class="target">
+  <span class="offset">A</span>
+</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001.html
new file mode 100644
index 00000000000..0bca8de8088
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-end-001.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-end-001-ref.html">
+<script src="resources/variant-class.js"></script>
+<meta name="variant" content="?class=leading">
+<meta name="variant" content="?class=text">
+<meta name="variant" content="?class=alphabetic">
+<meta name="variant" content="?class=vrl,leading">
+<meta name="variant" content="?class=vrl,text">
+<meta name="variant" content="?class=vrl,alphabetic">
+<meta name="variant" content="?class=vlr,leading">
+<meta name="variant" content="?class=vlr,text">
+<meta name="variant" content="?class=vlr,cap">
+<meta name="variant" content="?class=vlr,ex">
+<style>
+@font-face {
+  font-family: test-font;
+  src: url(resources/cap-x-height.ttf);
+}
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: test-font;
+  font-size: 100px;
+  line-height: 2;
+  text-box-trim: end;
+}
+.vrl { writing-mode: vertical-rl; }
+.vlr { writing-mode: vertical-lr; }
+.leading .target { text-box-edge: leading; }
+.text .target { text-box-edge: text; }
+.alphabetic .target { text-box-edge: text alphabetic; }
+.cap .target { text-box-edge: cap; }
+.ex .target { text-box-edge: ex; }
+</style>
+<div class="spacer"></div>
+<div class="target">A</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001-ref.html
new file mode 100644
index 00000000000..dd66e5a732d
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: Ahem;
+  font-size: 50px;
+  line-height: 1;
+}
+.float {
+  float: left;
+  width: 100px;
+  height: 100px;
+  background: yellow;
+}
+.clear { clear: both; }
+</style>
+<div class="float"></div>
+<div class="target">
+  A
+  <br class="clear">
+</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001.html
new file mode 100644
index 00000000000..985ae60c46d
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-001.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-float-clear-br-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font-family: Ahem;
+  font-size: 50px;
+  line-height: 1;
+  text-box-trim: end;
+  text-box-edge: text;
+}
+.float {
+  float: left;
+  width: 100px;
+  height: 100px;
+  background: yellow;
+}
+.clear { clear: both; }
+</style>
+<div class="float"></div>
+<div class="target">
+  A
+  <br class="clear">
+</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001-ref.html
index 2dfe344ce35..fac58768281 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001-ref.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001-ref.html
@@ -9,11 +9,9 @@
   font-family: Ahem;
   font-size: 20px;
   line-height: 1;
-  text-box-trim: both;
 }
 </style>
 
 <div class ="div-parent"">
-  <div id="d1"></div>
-  <div id="d2">Testline1<br><br><br>Testline2<br><br><br>Testline3</div>
+  <div>Testline1<br><br><br>Testline2<br><br><br>Testline3</div>
 </div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001.html
index 2bfdc4e31b5..92ec181c51f 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-001.html
@@ -16,6 +16,9 @@
 </style>
 
 <div class ="div-parent">
-
-  <div id="d2">Testline1<br>Testline2<br>Testline3</div>
+  <div id="0"></div>
+  <div id="1">Testline1</div>
+  <div id="2">Testline2</div>
+  <div id="3">Testline3</div>
+  <div></div>
 </div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-003.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-003.html
new file mode 100644
index 00000000000..916afde8905
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-half-leading-block-box-003.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>Tests block boxes's edges are trimmed at text-over/text-under baselines of their first/last formatted lines</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#leading-trim">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<link rel="match" href="text-box-trim-half-leading-block-box-001-ref.html">
+
+<style>
+.div-parent {
+  outline: 1px solid orange;
+  font-family: Ahem;
+  font-size: 20px;
+  line-height: 3;
+  text-box-trim: both;
+  text-box-edge: text;
+}
+</style>
+
+<div class ="div-parent">
+  <div id="0"></div>
+  <div id="1">Testline1<br>Testline2<br>Testline3</div>
+  <div id="2"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001-ref.html
new file mode 100644
index 00000000000..f6f227e11d0
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  height: 50px;
+  background: lightgray;
+  position: relative;
+}
+.target {
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 1;
+  width: 200px;
+}
+.target::first-letter {
+  initial-letter: 3;
+}
+.offset {
+  top: -8px;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">XX &#x00C9;</div>
+<div class="spacer offset"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001.html
new file mode 100644
index 00000000000..809666ee0d0
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-initial-letter-end-001.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-initial-letter-end-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  height: 50px;
+  background: lightgray;
+  position: relative;
+}
+.target {
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 1;
+  width: 200px;
+  text-box-trim: end;
+  text-box-edge: text alphabetic;
+}
+.target::first-letter {
+  initial-letter: 3;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">XX &#x00C9;</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001-ref.html
new file mode 100644
index 00000000000..aa81e23a26a
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001-ref.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.multicol {
+  column-count: 3;
+  column-fill: auto;
+  border: 1px solid;
+  height: 4lh;
+  width: 20ch;
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 2;
+}
+.up-half {
+  position: relative;
+  top: -20px;
+}
+</style>
+<div class="multicol">
+  <span class="up-half">
+    abc abc abc abc
+  </span>
+  abc abc abc abc
+  abc abc
+  <div class="spacer up-half"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001.html
new file mode 100644
index 00000000000..69323e0aeff
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>Test when a box with `text-box-trim` is multi-column</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-multicol-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.multicol {
+  column-count: 3;
+  column-fill: auto;
+  border: 1px solid;
+  height: 4lh;
+  width: 20ch;
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 2;
+}
+.trim {
+  text-box-trim: both;
+  text-box-edge: text;
+}
+</style>
+<div class="multicol trim">
+  abc abc abc abc
+  abc abc abc abc
+  abc abc
+  <div class="spacer"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-002.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-002.html
new file mode 100644
index 00000000000..dbba108b16d
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-multicol-002.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>Test when a box with `text-box-trim` is block fragmented</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-multicol-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.multicol {
+  column-count: 3;
+  column-fill: auto;
+  border: 1px solid;
+  height: 4lh;
+  width: 20ch;
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 2;
+}
+.trim {
+  text-box-trim: both;
+  text-box-edge: text;
+}
+</style>
+<div class="multicol">
+  <div class="trim">
+    abc abc abc abc
+    abc abc abc abc
+    abc abc
+  </div>
+  <div class="spacer"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-end-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-end-001.html
new file mode 100644
index 00000000000..5d0229fa373
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-end-001.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-edge">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#propdef-text-box-trim">
+<link rel="match" href="text-box-trim-ruby-start-001-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+.spacer {
+  height: 40px;
+  background: lightgray;
+}
+.target {
+  font-family: Ahem;
+  font-size: 40px;
+  line-height: 1;
+  ruby-position: under;
+  text-box-trim: end;
+  text-box-edge: text;
+}
+rt {
+  /* The Ruby annotation positioning is UA-dependent. In order to ref-test the
+     trimming of parts above the ascent, hide the Ruby annotation. */
+  color: transparent;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">A <ruby>BASE<rt>RUBY</rt></ruby> B</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001-ref.html
index 390dbc73c6a..dc1115d3bf8 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001-ref.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001-ref.html
@@ -13,3 +13,4 @@
 </style>
 <div class="spacer"></div>
 <div class="target">A BASE B</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001.html
index 25760123696..d673d0ab02d 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ruby-start-001.html
@@ -23,3 +23,4 @@ rt {
 </style>
 <div class="spacer"></div>
 <div class="target">A <ruby>BASE<rt>RUBY</rt></ruby> B</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001-ref.html
index 5595fe1a8f2..dc0d31e2f60 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001-ref.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001-ref.html
@@ -11,7 +11,7 @@
   line-height: 1;
   position: relative;
   top: -80px;
-  height: 220px;
+  height: 100px;
 }
 </style>
 <div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001.html
index 1b2bbffc148..9a86e394cc0 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-tall-line-001.html
@@ -12,7 +12,7 @@
   font-family: Ahem;
   font-size: 100px;
   line-height: 2;
-  text-box-trim: start;
+  text-box-trim: both;
   text-box-edge: text;
 }
 </style>
diff --git a/tests/wpt/tests/css/css-lists/counter-important.html b/tests/wpt/tests/css/css-lists/counter-important.html
new file mode 100644
index 00000000000..345de9c6833
--- /dev/null
+++ b/tests/wpt/tests/css/css-lists/counter-important.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Counters: !important flag parsing</title>
+    <link rel="help" href="https://crbug.com/340100643">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <div id="target" style="counter-increment: abc 1 xyz 2 !important">Some text.</div>
+  </body>
+  <script>
+test(() => {
+  assert_equals(target.style.counterIncrement, 'abc 1 xyz 2');
+});
+  </script>
+</html>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-001.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-001.tentative.html
new file mode 100644
index 00000000000..02d8479736d
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-001.tentative.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: basic `line-clamp: auto` test</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-005-ref.html">
+<meta name="assert" content="line-clamp: auto should clamp based on max-height without any need for overflow">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 4lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  padding: 0 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-002.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-002.tentative.html
new file mode 100644
index 00000000000..ff9e802f0f9
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-002.tentative.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with mbp</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/line-clamp-auto-002-ref.html">
+<meta name="assert" content="line-clamp: auto should clamp fine with margins, border and padding">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 4lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  margin: 2px;
+  border: 1px solid black;
+  padding: 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-003.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-003.tentative.html
new file mode 100644
index 00000000000..a74704dd3b0
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-003.tentative.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with bp and box-sizing: border-box</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/line-clamp-auto-002-ref.html">
+<meta name="assert" content="line-clamp: auto should clamp fine with border and padding, even with box-sizing: border-box">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 138px; /* 32px * 4 + (1px + 4px) * 2 */
+  box-sizing: border-box;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  margin: 2px;
+  border: 1px solid black;
+  padding: 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-004.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-004.tentative.html
new file mode 100644
index 00000000000..2dbf9d54084
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-004.tentative.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` when the max-height isn't an exact number of lines</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-005-ref.html">
+<meta name="assert" content="line-clamp: auto will clamp lines that start before the maximum block size but overflow, and set the intrinsic block size to the last line before clamp">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 4.5lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  padding: 0 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-005.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-005.tentative.html
new file mode 100644
index 00000000000..1c9148e2647
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-005.tentative.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with height</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/line-clamp-auto-005-ref.html">
+<meta name="assert" content="line-clamp: auto will also treat the height property as a constraint on the block size, and the position of the last line before clamp will not affect the final height">
+<style>
+.clamp {
+  line-clamp: auto;
+  height: 4.5lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  padding: 0 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-006.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-006.tentative.html
new file mode 100644
index 00000000000..ab6915f5216
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-006.tentative.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with exactly the content's height</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-001-ref.html">
+<meta name="assert" content="line-clamp: auto should not clamp on an element whose max-height exactly matches its size">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 5lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-007.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-007.tentative.html
new file mode 100644
index 00000000000..f7d56bfa655
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-007.tentative.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with more than the content's height</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-001-ref.html">
+<meta name="assert" content="line-clamp: auto should not clamp on an element whose max-height is greater than its size">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 6lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-008.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-008.tentative.html
new file mode 100644
index 00000000000..9e7f38ab7ca
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-008.tentative.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: unconstrained `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-001-ref.html">
+<meta name="assert" content="if a line-clamp: auto box does not have block size constraints, it should not clamp">
+<style>
+.clamp {
+  line-clamp: auto;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-009.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-009.tentative.html
new file mode 100644
index 00000000000..44d111056c6
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-009.tentative.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `text-overflow: ellipsis` and `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-036-ref.html">
+<meta name="assert" content="text-overflow: ellipsis doesn't apply in a line-clamp: auto context">
+<style>
+.clamp {
+  width: 10ch;
+  max-height: 80px;
+  font: 16px / 32px monospace;
+  background-color: yellow;
+  padding: 4px;
+  line-clamp: auto;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+</style>
+<div class="clamp">
+  supercalifragilisticexpialidocious
+  supercalifragilisticexpialidocious
+  supercalifragilisticexpialidocious
+</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-010.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-010.tentative.html
new file mode 100644
index 00000000000..cb706bba08e
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-010.tentative.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `text-overflow: ellipsis` and unconstrained `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-037-ref.html">
+<meta name="assert" content="text-overflow: ellipsis doesn't apply in a line-clamp: auto context, even if it doesn't have a max-height">
+<style>
+.clamp {
+  width: 150px;
+  font: 16px / 32px monospace;
+  background-color: yellow;
+  padding: 4px;
+  line-clamp: auto;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+</style>
+<div class="clamp">
+  supercalifragilisticexpialidocious
+  supercalifragilisticexpialidocious
+</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-011.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-011.tentative.html
new file mode 100644
index 00000000000..00076a5336e
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-011.tentative.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `line-clamp: auto` with max-height of zero</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/line-clamp-auto-011-ref.html">
+<meta name="assert" content="When line-clamp: auto is used with max-height: 0, it should not show any lines and its content box's intrinsic size should be zero">
+<style>
+.clamp {
+  line-clamp: auto;
+  max-height: 0;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+  border: 1px solid black;
+  padding: 4px;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4</div>
+<p>Following content.</p>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-012.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-012.tentative.html
new file mode 100644
index 00000000000..56957b15c92
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-012.tentative.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `min-height` with `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-001-ref.html">
+<meta name="assert" content="min-height by itself does not add a height constraint for line-clamp: auto">
+<style>
+.clamp {
+  line-clamp: auto;
+  min-height: 3lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-013.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-013.tentative.html
new file mode 100644
index 00000000000..dd864fbdcb3
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-013.tentative.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `min-height` and `max-height` with `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-005-ref.html">
+<meta name="assert" content="If min-height is present and lower than max-height, it does not change the behavior of line-clamp: auto">
+<style>
+.clamp {
+  line-clamp: auto;
+  min-height: 3lh;
+  max-height: 4lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  padding: 0 4px;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-014.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-014.tentative.html
new file mode 100644
index 00000000000..6738c708706
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-014.tentative.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: `min-height` greater than `max-height` with `line-clamp: auto`</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-005-ref.html">
+<meta name="assert" content="The block size constraint used for line-clamp: auto is the maximum of min-height and max-height">
+<style>
+.clamp {
+  line-clamp: auto;
+  min-height: 4lh;
+  max-height: 3lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  padding: 0 4px;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+Line 5
+Line 6</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-015.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-015.tentative.html
new file mode 100644
index 00000000000..cdb1ed18c0d
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-015.tentative.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: floats pushing a line downwards</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-005-ref.html">
+<meta name="assert" content="If a float pushes a line downwards past the clamp point, the float and the line will both be hidden.">
+<style>
+.parent {
+  padding: 0 4px;
+  background-color: yellow;
+}
+.clamp {
+  line-clamp: auto;
+  max-height: 5lh;
+  font: 16px / 32px serif;
+  white-space: pre-wrap;
+  width: 200px;
+}
+.float {
+  float: left;
+  width: 300px;
+  background-color: orange;
+}
+</style>
+<div class="parent">
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4
+<div class="float">Float</div>Line 5
+Line 6</div>
+</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp-auto-016.tentative.html b/tests/wpt/tests/css/css-overflow/line-clamp-auto-016.tentative.html
new file mode 100644
index 00000000000..372213983b7
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp-auto-016.tentative.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: floats pushing a line downwards</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/line-clamp-auto-016-ref.html">
+<meta name="assert" content="The last line before clamp should have an ellipsis, even if it's only the last line because it is pushed down by a float">
+<style>
+.parent {
+  padding: 0 4px;
+  background-color: yellow;
+}
+.clamp {
+  line-clamp: auto;
+  max-height: 5lh;
+  font: 16px / 32px serif;
+  white-space: pre-wrap;
+  width: 200px;
+}
+.float {
+  float: left;
+  width: 300px;
+  background-color: orange;
+}
+</style>
+<div class="parent">
+<div class="clamp">Line 1
+Line 2
+Line 3
+<div class="float">Float</div>Line 4
+Line 5
+Line 6</div>
+</div>
diff --git a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-computed.tentative.html b/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-computed.tentative.html
deleted file mode 100644
index 61067e71ee7..00000000000
--- a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-computed.tentative.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="utf-8">
-  <title>CSS Overflow: scroll-markers computed values</title>
-  <link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10243">
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-  <script src="/css/support/computed-testcommon.js"></script>
-</head>
-
-<body>
-  <style>
-    #target { scroll-markers: before; }
-  </style>
-  <div id="target"></div>
-  <script>
-    test_computed_value('scroll-markers', 'initial', 'none');
-    test_computed_value('scroll-markers', 'inherit', 'none');
-    test_computed_value('scroll-markers', 'unset', 'none');
-    test_computed_value('scroll-markers', 'revert', 'none');
-
-    test_computed_value('scroll-markers', 'none');
-    test_computed_value('scroll-markers', 'before');
-    test_computed_value('scroll-markers', 'after');
-
-    test(() => {
-      let style = getComputedStyle(document.getElementById('target'));
-      assert_not_equals(Array.from(style).indexOf('scroll-markers'), -1);
-    }, 'The scroll-markers property shows up in CSSStyleDeclaration enumeration');
-
-    test(() => {
-      let style = document.getElementById('target').style;
-      assert_not_equals(style.cssText.indexOf('scroll-markers'), -1);
-    }, 'The scroll-markers property shows up in CSSStyleDeclaration.cssText');
-
-  </script>
-</body>
-
-</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-invalid.tentative.html b/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-invalid.tentative.html
deleted file mode 100644
index 8e0835662df..00000000000
--- a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-invalid.tentative.html
+++ /dev/null
@@ -1,24 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="utf-8">
-  <title>CSS Overflow: parsing scroll-markers with invalid values</title>
-  <link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10243">
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-  <script src="/css/support/parsing-testcommon.js"></script>
-</head>
-
-<body>
-  <div id="target"></div>
-  <script>
-    test_invalid_value('scroll-markers', '10');
-    test_invalid_value('scroll-markers', 'true');
-    test_invalid_value('scroll-markers', 'default');
-    test_invalid_value('scroll-markers', 'set');
-    test_invalid_value('scroll-markers', 'before, after');
-  </script>
-</body>
-
-</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-valid.tentative.html b/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-valid.tentative.html
deleted file mode 100644
index 04de1bf0c3e..00000000000
--- a/tests/wpt/tests/css/css-overflow/parsing/scroll-markers-valid.tentative.html
+++ /dev/null
@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-
-<head>
-  <meta charset="utf-8">
-  <title>CSS Overflow: parsing scroll-markers with valid values</title>
-  <link rel="help" href="https://github.com/w3c/csswg-drafts/pull/10243">
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-  <script src="/css/support/parsing-testcommon.js"></script>
-</head>
-
-<body>
-  <div id="target"></div>
-  <script>
-    test_valid_value('scroll-markers', 'initial');
-    test_valid_value('scroll-markers', 'inherit');
-    test_valid_value('scroll-markers', 'unset');
-    test_valid_value('scroll-markers', 'revert');
-
-    test_valid_value("scroll-markers", "none");
-    test_valid_value("scroll-markers", "before");
-    test_valid_value("scroll-markers", "after");
-  </script>
-</body>
-
-</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-002-ref.html b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-002-ref.html
new file mode 100644
index 00000000000..fe0a8dbd588
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-002-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<style>
+.clamp {
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+  font: 16px / 32px serif;
+  white-space: pre;
+  margin: 2px;
+  border: 1px solid black;
+  padding: 4px;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4…</div>
diff --git a/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-005-ref.html b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-005-ref.html
new file mode 100644
index 00000000000..01eea67a0da
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-005-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<style>
+.clamp {
+  height: 4.5lh;
+  font: 16px / 32px serif;
+  white-space: pre;
+  padding: 0 4px;
+  background-color: yellow;
+}
+</style>
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4…</div>
diff --git a/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-011-ref.html b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-011-ref.html
new file mode 100644
index 00000000000..5f7120ee39a
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-011-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<style>
+.clamp {
+  background-color: yellow;
+  border: 1px solid black;
+  padding: 4px;
+}
+</style>
+<div class="clamp"></div>
+<p>Following content.</p>
diff --git a/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-016-ref.html b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-016-ref.html
new file mode 100644
index 00000000000..4a5f3536cc6
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/reference/line-clamp-auto-016-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<style>
+.parent {
+  padding: 0 4px;
+  background-color: yellow;
+}
+.clamp {
+  font: 16px / 32px serif;
+  white-space: pre-wrap;
+  width: 200px;
+}
+.float {
+  float: left;
+  width: 300px;
+  background-color: orange;
+}
+</style>
+<div class="parent">
+<div class="clamp">Line 1
+Line 2
+Line 3
+<div class="float">Float</div>Line 4…</div>
+</div>
diff --git a/tests/wpt/tests/css/css-page/background-image-only-for-print-ref.html b/tests/wpt/tests/css/css-page/background-image-only-for-print-ref.html
new file mode 100644
index 00000000000..c3e5d8d1c5e
--- /dev/null
+++ b/tests/wpt/tests/css/css-page/background-image-only-for-print-ref.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<p>
+  Should print a green rectangle but not display it on screen.
+</p>
+<img src="/images/green.png" alt="A green rectangle">
diff --git a/tests/wpt/tests/css/css-page/background-image-only-for-print.html b/tests/wpt/tests/css/css-page/background-image-only-for-print.html
new file mode 100644
index 00000000000..f100f7eaeed
--- /dev/null
+++ b/tests/wpt/tests/css/css-page/background-image-only-for-print.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Test print result of background-image not displayed on screen</title>
+
+<link rel="help" href="https://drafts.csswg.org/css-backgrounds/#background-image">
+<link rel="help" href="https://crbug.com/40262871">
+
+<link rel="match" href="background-image-only-for-print-ref.html">
+
+<style>
+  @media not print {
+    .print-only {
+      display: none;
+    }
+  }
+
+  #target {
+    background-image: url("/images/green.png");
+    height: 50px;
+    width: 100px;
+  }
+</style>
+
+<p>
+  Should print a green rectangle but not display it on screen.
+</p>
+
+<div id="target" class="print-only"></div>
diff --git a/tests/wpt/tests/css/css-position/sticky/WEB_FEATURES.yml b/tests/wpt/tests/css/css-position/sticky/WEB_FEATURES.yml
new file mode 100644
index 00000000000..a32cc334009
--- /dev/null
+++ b/tests/wpt/tests/css/css-position/sticky/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: sticky-positioning
+  files: "**"
diff --git a/tests/wpt/tests/css/css-properties-values-api/at-property-animation.html b/tests/wpt/tests/css/css-properties-values-api/at-property-animation.html
index 233b63239fc..f7a8e169784 100644
--- a/tests/wpt/tests/css/css-properties-values-api/at-property-animation.html
+++ b/tests/wpt/tests/css/css-properties-values-api/at-property-animation.html
@@ -295,6 +295,45 @@ test(() => {
   });
 }, 'No transition when removing @property rule');
 
+test(() => {
+  let name = generate_name();
+  with_style_node(`div { transition: ${name} steps(2, start) 100s; }`, () => {
+    let style1 = document.createElement('style');
+    style1.textContent = `
+      @property ${name} {
+        syntax: "<angle>";
+        inherits: false;
+        initial-value: -90deg;
+      }
+    `;
+
+    let style2 = document.createElement('style');
+    style2.textContent = `div { ${name}: 90deg; }`;
+
+    try {
+      // Register the property:
+      document.body.append(style1);
+      // No transition in the beginning.
+      assert_equals(getComputedStyle(div).getPropertyValue(name), '-90deg');
+
+      // Change the computed value:
+      document.body.append(style2);
+      // This should cause an interpolation between -90deg and 90deg (for more
+      // specifically, it is 50% from -90deg to 90deg, with steps(2, start)).
+      assert_equals(getComputedStyle(div).getPropertyValue(name), '0deg');
+
+      // In the middle of the transition above, remove style2, which creates
+      // a transition which reverses the existing one, from 0deg to -90deg.
+      // Also, it is 50% from 0deg to -90deg, with steps(2, start).
+      style2.remove();
+      assert_equals(getComputedStyle(div).getPropertyValue(name), '-45deg');
+    } finally {
+      style1.remove();
+      style2.remove();
+    }
+  });
+}, 'Ongoing transition reverts to its initial state');
+
 test_with_at_property({
   syntax: '"<length>"',
   inherits: false,
diff --git a/tests/wpt/tests/css/css-properties-values-api/crashtests/consume-color-contrast-crash.html b/tests/wpt/tests/css/css-properties-values-api/crashtests/consume-color-contrast-crash.html
new file mode 100644
index 00000000000..4fd342fb803
--- /dev/null
+++ b/tests/wpt/tests/css/css-properties-values-api/crashtests/consume-color-contrast-crash.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/337069153">
+<script>
+  var element = document.createElementNS("http://www.w3.org/2000/svg", undefined);
+  element.style.setProperty('background-color', unescape("color-contrast(red vs deeppink, #008000)"));
+</script>
diff --git a/tests/wpt/tests/css/css-ruby/break-within-bases/basic-ref.html b/tests/wpt/tests/css/css-ruby/break-within-bases/basic-ref.html
index c2b129f9134..32a294b581b 100644
--- a/tests/wpt/tests/css/css-ruby/break-within-bases/basic-ref.html
+++ b/tests/wpt/tests/css/css-ruby/break-within-bases/basic-ref.html
@@ -9,8 +9,23 @@ span {
 }
 p {
   word-break: break-all;
-  inline-size: 305px;
+  inline-size: calc(6em + 5px);
+}
+.mc {
+  columns: 2 calc(6em + 5px);
+  column-gap: 10px;
+  inline-size: calc(12em + 10px + 10px);
+  block-size: 80px;
+}
+.indent {
+  text-indent: -1em;
 }
 </style>
 <p>zzz<ruby><span>mmm</span><rt><span>mmmmmm</span></ruby> <ruby><span>mm</span><rt><span>mmmm</span></ruby>zzz
 </p>
+
+<p class="mc">zzz<ruby><span>mmm</span><span>mm</span><rt><span>mmmmmm</span><span>mmmm</span></ruby>zzz
+</p>
+
+<p class="indent">zzz<ruby>mmmm<rt>mmmmmmmm</ruby><br><ruby>m<rt>mm</ruby>zzz
+</p>
diff --git a/tests/wpt/tests/css/css-ruby/break-within-bases/basic.html b/tests/wpt/tests/css/css-ruby/break-within-bases/basic.html
index da810c3dc5e..3e609f42ed4 100644
--- a/tests/wpt/tests/css/css-ruby/break-within-bases/basic.html
+++ b/tests/wpt/tests/css/css-ruby/break-within-bases/basic.html
@@ -11,8 +11,24 @@ span {
 }
 p {
   word-break: break-all;
-  inline-size: 305px;
+  inline-size: calc(6em + 5px);
+}
+.mc {
+  columns: 2 calc(6em + 5px);
+  column-gap: 10px;
+  inline-size: calc(12em + 10px + 10px);
+  block-size: 80px;
+}
+.indent {
+  text-indent: -1em;
 }
 </style>
 <p>zzz<ruby><span>mmm</span><span>mm</span><rt><span>mmmmmm</span><span>mmmm</span></ruby>zzz
 </p>
+
+<p class="mc">zzz<ruby><span>mmm</span><span>mm</span><rt><span>mmmmmm</span><span>mmmm</span></ruby>zzz
+</p>
+
+<!-- The first line should contain 7 letters. -->
+<p class="indent">zzz<ruby>mmmmm<rt>mmmmmmmmmm</ruby>zzz
+</p>
diff --git a/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap-ref.html b/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap-ref.html
new file mode 100644
index 00000000000..7b814db7e49
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<style>
+p {
+  inline-size: 10em;
+}
+</style>
+
+<p><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
+<p><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
+<p><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
diff --git a/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap.tentative.html b/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap.tentative.html
new file mode 100644
index 00000000000..b2acd519a60
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/break-within-bases/text-wrap.tentative.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Don't break rubies in a container with `text-wrap` value other than `wrap`</title>
+<!--
+  Google Chrome doesn't break lines inside <ruby>s in a container with
+  text-wrap:balance or text-wrap:pretty. It's too complicated to suport
+  breakable rubies.
+-->
+<link rel="help" href="https://drafts.csswg.org/css-ruby/#break-within">
+<link rel="match" href="text-wrap-ref.html">
+<style>
+.nowrap {
+  text-wrap: nowrap;
+}
+.balance {
+  text-wrap: balance;
+}
+.pretty {
+  text-wrap: pretty;
+}
+
+p {
+  inline-size: 5em;
+}
+</style>
+
+<p class="nowrap"><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
+<p class="balance"><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
+<p class="pretty"><ruby>二等辺三角形<rt>にとうへんさんかくけい</ruby></p>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple-ref.html b/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple-ref.html
new file mode 100644
index 00000000000..afb67a5bc98
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<style>
+li { display: inline-block; }
+rt { display: ruby-text; }
+</style>
+<body>
+
+<div><ruby><b>firstsecond</b><li>firstsecond</li></ruby></div>
+<div><rt><b>firstsecond</b><li>firstsecond</li></rt></div>
+
+</body>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple.html b/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple.html
new file mode 100644
index 00000000000..ebf0412d609
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/ruby-inlinize-recursive-simple.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Inlinize block-level boxes recursively inside ruby and rt</title>
+<link rel="help" href="https://drafts.csswg.org/css-ruby/#anon-gen-inlinize">
+<link rel="help" href="https://drafts.csswg.org/css-display-4/#inlinify">
+<link rel="match" href="ruby-inlinize-recursive-simple-ref.html">
+<style>
+li { display: inline flow list-item; list-style-type: none; }
+.bl { display: block; }
+rt { display: ruby-text; }
+</style>
+<body>
+
+<div><ruby><b><span class="bl">first</span><span class="bl">second</span></b><li><span class="bl">first</span><span class="bl">second</span></li></ruby></div>
+<div><rt><b><span class="bl">first</span><span class="bl">second</span></b><li><span class="bl">first</span><span class="bl">second</span></li></rt></div>
+
+</body>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-no-transform-ref.html b/tests/wpt/tests/css/css-ruby/ruby-no-transform-ref.html
index 56afd9366fe..1c075de18fa 100644
--- a/tests/wpt/tests/css/css-ruby/ruby-no-transform-ref.html
+++ b/tests/wpt/tests/css/css-ruby/ruby-no-transform-ref.html
@@ -8,3 +8,5 @@
   <rbc><rb>a</rb><rb>b</rb></rbc>
   <rtc><rt>A</rt><rt>B</rt></rtc>
 </ruby>
+
+<ruby>a<rt>A</rt>b<rt>B</rt></ruby>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-no-transform.html b/tests/wpt/tests/css/css-ruby/ruby-no-transform.html
index 1cdd4f3bbf5..56b2fc83809 100644
--- a/tests/wpt/tests/css/css-ruby/ruby-no-transform.html
+++ b/tests/wpt/tests/css/css-ruby/ruby-no-transform.html
@@ -15,3 +15,5 @@ ruby, rbc, rb, rtc, rt {
   <rbc><rb>a</rb><rb>b</rb></rbc>
   <rtc><rt>A</rt><rt>B</rt></rtc>
 </ruby>
+
+<ruby>a<rt>A</rt>b<rt>B</rt></ruby>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/resources/common.js b/tests/wpt/tests/css/css-scroll-snap-2/resources/common.js
index d95b605120b..c4a06b02fad 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/resources/common.js
+++ b/tests/wpt/tests/css/css-scroll-snap-2/resources/common.js
@@ -1,8 +1,8 @@
 function checkSnapEventSupport(event_type) {
-  if (event_type == "snapchanged") {
-    assert_true(window.onsnapchanged !== undefined, "snapchanged not supported");
-  } else if (event_type == "snapchanging") {
-    assert_true(window.onsnapchanging !== undefined, "snapchanging not supported");
+  if (event_type == "scrollsnapchange") {
+    assert_true(window.onscrollsnapchange !== undefined, "scrollsnapchange not supported");
+  } else if (event_type == "scrollsnapchanging") {
+    assert_true(window.onscrollsnapchanging !== undefined, "scrollsnapchanging not supported");
   } else {
     assert_unreached(`Unknown snap event type selected: ${event_type}`);
   }
@@ -48,8 +48,8 @@ async function test_snap_event(test, test_data, event_type,
     "horizontal scroll offset mismatch.");
 }
 
-async function test_snapchanged(test, test_data, use_onsnap_member = false) {
-  await test_snap_event(test, test_data, "snapchanged", use_onsnap_member);
+async function test_scrollsnapchange(test, test_data, use_onsnap_member = false) {
+  await test_snap_event(test, test_data, "scrollsnapchange", use_onsnap_member);
 }
 
 function waitForEventUntil(event_target, event_type, wait_until,
@@ -60,20 +60,20 @@ function waitForEventUntil(event_target, event_type, wait_until,
       result = evt;
     };
     if (use_onsnap_member) {
-      if (event_type === "snapchanging") {
-        event_target.onsnapchanging = listener;
+      if (event_type === "scrollsnapchanging") {
+        event_target.onscrollsnapchanging = listener;
       } else {
-        event_target.onsnapchanged = listener;
+        event_target.onscrollsnapchange = listener;
       }
     } else {
       event_target.addEventListener(event_type, listener);
     }
     wait_until.then(() => {
       if (use_onsnap_member) {
-        if (event_type === "snapchanging") {
-          event_target.onsnapchanging = null;
+        if (event_type === "scrollsnapchanging") {
+          event_target.onscrollsnapchanging = null;
         } else {
-          event_target.onsnapchanged = null;
+          event_target.onscrollsnapchange = null;
         }
       } else {
         event_target.removeEventListener(event_type, listener);
@@ -112,8 +112,8 @@ function waitForSnapEvent(event_target, event_type, scroll_happens = true,
                                    use_onsnap_member);
 }
 
-function waitForSnapChangedEvent(event_target, scroll_happens = true) {
-  return waitForSnapEvent(event_target, "snapchanged", scroll_happens);
+function waitForScrollSnapChangeEvent(event_target, scroll_happens = true) {
+  return waitForSnapEvent(event_target, "scrollsnapchange", scroll_happens);
 }
 
 function getScrollbarToScrollerRatio(scroller) {
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/resources/user-scroll-common.js b/tests/wpt/tests/css/css-scroll-snap-2/resources/user-scroll-common.js
index 07c14286335..d5982ae1653 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/resources/user-scroll-common.js
+++ b/tests/wpt/tests/css/css-scroll-snap-2/resources/user-scroll-common.js
@@ -1,8 +1,8 @@
-// Helper functions for snapchanged-on-user-* tests.
+// Helper functions for scrollsnapchange-on-user-* tests.
 
 // This performs a touch scroll on |scroller| using the coordinates provided
 // in |start_pos| and |end_pos|.
-// It is meant for use in snapchanged & snapchanging tests for triggering snap
+// It is meant for use in scrollsnapchange & scrollsnapchanging tests for triggering snap
 // events when touch scrolling from |start_pos| to |end_pos|.
 function snap_event_touch_scroll_helper(start_pos, end_pos) {
   return new test_driver.Actions()
@@ -62,10 +62,10 @@ async function test_no_snap_event(test, scroller, delta, event_type) {
   assert_equals(scroller.scrollLeft, 0, "scroller snaps back to the left");
 }
 
-async function test_no_snapchanged(t, scroller, delta) {
-  await test_no_snap_event(t, scroller, delta, "snapchanged");
+async function test_no_scrollsnapchange(t, scroller, delta) {
+  await test_no_snap_event(t, scroller, delta, "scrollsnapchange");
 }
 
-async function test_no_snapchanging(t, scroller, delta) {
-  await test_no_snap_event(t, scroller, delta, "snapchanging");
+async function test_no_scrollsnapchanging(t, scroller, delta) {
+  await test_no_snap_event(t, scroller, delta, "scrollsnapchanging");
 }
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-after-layout-change.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-after-layout-change.tentative.html
similarity index 81%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-after-layout-change.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-after-layout-change.tentative.html
index a3ba05fdf5e..7f4ec2ff281 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-after-layout-change.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-after-layout-change.tentative.html
@@ -56,7 +56,7 @@
     }
 
     async function setup(t) {
-      checkSnapEventSupport("snapchanged");
+      checkSnapEventSupport("scrollsnapchange");
       await reset(t);
       await waitForCompositorCommit();
       assert_equals(scroller.scrollTop, 0, "test precondition: scroller " +
@@ -77,17 +77,17 @@
       // We are just below the inner snap area. Increase its height so that it
       // is larger than the snapport and straddled by the snapport. Verify
       // that we snap to its bottom.
-      let snapchanged_promise = waitForSnapChangedEvent(scroller);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller);
       inner_snap_area.style.height =
         `${scroller.clientHeight + inner_snap_area.clientHeight - 10}px`;
-      const evt = await snapchanged_promise;
+      const evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: inner_snap_area, inline: null });
       target_snap_position = inner_snap_area.offsetTop +
           inner_snap_area.offsetHeight - scroller.clientHeight;
       assert_equals(scroller.scrollTop, target_snap_position,
           "scroller snaps to the bottom of the smaller snap area (which is " +
           "now covering).");
-    }, "snapchanged fires after snap area is snapped to upon layout change.");
+    }, "scrollsnapchange fires after snap area is snapped to upon layout change.");
 
     promise_test(async (t) => {
       await setup(t);
@@ -103,43 +103,43 @@
       // We are just below the inner snap area. Increase its height so that it
       // is larger than the snapport making the current scroll position
       // a valid covering position within the inner snap area.
-      let snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       inner_snap_area.style.height =
           `${scroller.clientHeight + inner_snap_area.clientHeight + 10}px`;
-      const evt = await snapchanged_promise;
+      const evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: inner_snap_area, inline: null });
       assert_equals(scroller.scrollTop, target_snap_position,
           "scroller maintains offset which is now covering within inner area");
-    }, "snapchanged fires after snap area is snapped to upon layout change " +
+    }, "scrollsnapchange fires after snap area is snapped to upon layout change " +
        "without scroll.");
 
     promise_test(async(t) => {
       await setup(t);
       await waitForCompositorCommit();
-      let snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       scroller.style.scrollSnapType = "none";
-      let evt = await snapchanged_promise;
+      let evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: null, inline: null });
-      snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       scroller.style.scrollSnapType = "y mandatory";
-      evt = await snapchanged_promise;
+      evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: outer_snap_area, inline: null });
-    }, "snapchanged fires when container stops snapping");
+    }, "scrollsnapchange fires when container stops snapping");
 
     promise_test(async(t) => {
       await setup(t);
       await waitForCompositorCommit();
-      let snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       inner_snap_area.style.scrollSnapAlign = "none";
       outer_snap_area.style.scrollSnapAlign = "none";
-      let evt = await snapchanged_promise;
+      let evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: null, inline: null });
-      snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       inner_snap_area.style.scrollSnapAlign = "start";
       outer_snap_area.style.scrollSnapAlign = "start";
-      evt = await snapchanged_promise;
+      evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: outer_snap_area,  inline: null });
-    }, "snapchanged fires when snap container no longer has snap areas");
+    }, "scrollsnapchange fires when snap container no longer has snap areas");
   </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-interrupted-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-interrupted-scroll.tentative.html
similarity index 83%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-interrupted-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-interrupted-scroll.tentative.html
index a1d5259451e..9d0ddd0426b 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-interrupted-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-interrupted-scroll.tentative.html
@@ -2,7 +2,7 @@
 <html>
   <head>
     <meta charset="utf-8">
-    <title> CSS Scroll Snap 2 Test: snapchanged events</title>
+    <title> CSS Scroll Snap 2 Test: scrollsnapchange events</title>
     <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
@@ -46,8 +46,8 @@
       promise_test(async (t) => {
         await waitForCompositorCommit();
 
-        container.addEventListener("snapchanged",
-            t.unreached_func("snapchanged should not fire"));
+        container.addEventListener("scrollsnapchange",
+            t.unreached_func("scrollsnapchange should not fire"));
         let reset = () => {
           container.scrollTo({ top: 0, behavior: "smooth"});
           container.removeEventListener("scroll", reset);
@@ -59,10 +59,10 @@
         await scrollend_promise;
         assert_equals(container.scrollTop, 0, "scroll position is reset");
 
-        // snapchanged should not fire since the scroll ended on the same snap
+        // scrollsnapchange should not fire since the scroll ended on the same snap
         // target as the one it started on.
         await waitForCompositorCommit();
-      }, "snapchanged doesn't fire if interrupting scroll cancels snap");
+      }, "scrollsnapchange doesn't fire if interrupting scroll cancels snap");
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-root-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-root-scroll.tentative.html
similarity index 80%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-root-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-root-scroll.tentative.html
index 83603694220..940dc2c1d11 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-root-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-root-scroll.tentative.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title> CSS Scroll Snap 2 Test: snapchanged event on the root/document</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange event on the root/document</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
@@ -77,8 +77,8 @@
           y: snap_point_2.offsetTop,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes via scrollTo");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes via scrollTo");
 
     promise_test(async (t) => {
       await waitForCompositorCommit();
@@ -93,12 +93,12 @@
           y: snap_point_2.offsetTop,
         }
       };
-      await test_snapchanged(t, test_data, /*use_onsnap_member*/true);
-    }, "Document.onsnapchanged event fires after snap target changes via" +
+      await test_scrollsnapchange(t, test_data, /*use_onsnap_member*/true);
+    }, "Document.onscrollsnapchange event fires after snap target changes via" +
        "scrollTo");
 
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanged");
+      checkSnapEventSupport("scrollsnapchange");
       await waitForScrollReset(t, scroller);
       await waitForCompositorCommit();
       assert_equals(scroller.scrollTop, 0,
@@ -106,35 +106,35 @@
       assert_equals(scroller.scrollLeft, 0,
         "scroller is initially not scrolled horizontally");
 
-      let snapchanged_promise = waitForSnapChangedEvent(document, false);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(document, false);
       // Set the scroll destination to just a little off (0, 0) so we snap
       // back to the top box.
       let scroll_top_target = 10;
       let scroll_left_target = 10;
 
       scroller.scrollTo(scroll_left_target, scroll_top_target);
-      let evt = await snapchanged_promise;
+      let evt = await scrollsnapchange_promise;
       assert_equals(evt, null, "no snapchanges since scroller is back to top");
-      // scroller should snap back to (0,0) with no snapchanged event.
+      // scroller should snap back to (0,0) with no scrollsnapchange event.
       assert_equals(scroller.scrollTop, 0,
       "scroller snaps back to the top");
       assert_equals(scroller.scrollLeft, 0,
       "scroller snaps back to the left");
 
-      snapchanged_promise = waitForSnapChangedEvent(document);
+      scrollsnapchange_promise = waitForScrollSnapChangeEvent(document);
       scroll_top_target = snap_point_2.offsetTop + 10;
       scroll_left_target = snap_point_2.offsetLeft + 10;
-      // This scroll should snap to snap_point_2, so snapchanged should be
+      // This scroll should snap to snap_point_2, so scrollsnapchange should be
       // fired.
       scroller.scrollTo(scroll_left_target, scroll_top_target);
 
-      evt = await snapchanged_promise;
+      evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: snap_point_2,  inline: snap_point_2 });
       assert_approx_equals(scroller.scrollTop, snap_point_2.offsetTop, 1,
         "scroller snaps to the top of snap_point_2");
       assert_approx_equals(scroller.scrollLeft, snap_point_2.offsetLeft, 1,
         "scroller snaps to the left of snap_point_2");
-    }, "snapchanged is not fired if snap target doesn't change on " +
+    }, "scrollsnapchange is not fired if snap target doesn't change on " +
        "programmatic scroll");
   </script>
 </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-scroll.tentative.html
similarity index 81%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-scroll.tentative.html
index 2b2e6a77c58..03d14c66c7c 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-programmatic-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-programmatic-scroll.tentative.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title> CSS Scroll Snap 2 Test: snapchanged events</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange events</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
@@ -84,8 +84,8 @@
           y: snap_point_2.offsetTop,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes via scrollTo");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes via scrollTo");
 
     promise_test(async (t) => {
       await waitForCompositorCommit();
@@ -100,12 +100,12 @@
           y: snap_point_2.offsetTop,
         }
       };
-      await test_snapchanged(t, test_data, /*use_onsnap_member*/true);
-    }, "Element.onsnapchanged event fires after snap target changes via" +
+      await test_scrollsnapchange(t, test_data, /*use_onsnap_member*/true);
+    }, "Element.onscrollsnapchange event fires after snap target changes via" +
        "scrollTo");
 
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanged");
+      checkSnapEventSupport("scrollsnapchange");
       await waitForScrollReset(t, scroller);
       await waitForCompositorCommit();
       assert_equals(scroller.scrollTop, 0,
@@ -113,33 +113,33 @@
       assert_equals(scroller.scrollLeft, 0,
         "scroller is initially not scrolled horizontally");
 
-      let snapchanged_promise = waitForSnapChangedEvent(scroller, false);
+      let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller, false);
       // Set the scroll destination to just a little off (0, 0) so we snap
       // back to the top box.
       let scroll_top_target = 10;
       let scroll_left_target = 10;
 
       scroller.scrollTo(scroll_left_target, scroll_top_target);
-      let evt = await snapchanged_promise;
+      let evt = await scrollsnapchange_promise;
       assert_equals(evt, null, "no snapchanges since scroller is back to top");
-      // scroller should snap back to (0,0) with no snapchanged event.
+      // scroller should snap back to (0,0) with no scrollsnapchange event.
       assert_equals(scroller.scrollTop, 0, "scroller snaps back to the top");
       assert_equals(scroller.scrollLeft, 0, "scroller snaps back to the left");
 
-      snapchanged_promise = waitForSnapChangedEvent(scroller);
+      scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller);
       scroll_top_target = snap_point_2.offsetTop + 10;
       scroll_left_target = snap_point_2.offsetLeft + 10;
-      // This scroll should snap to snap_point_2, so snapchanged should be
+      // This scroll should snap to snap_point_2, so scrollsnapchange should be
       // fired.
       scroller.scrollTo(scroll_left_target, scroll_top_target);
 
-      evt = await snapchanged_promise;
+      evt = await scrollsnapchange_promise;
       assertSnapEvent(evt, { block: snap_point_2, inline: snap_point_2 })
       assert_approx_equals(scroller.scrollTop, snap_point_2.offsetTop, 1,
           "scroller snaps to the top of snap_point_2");
       assert_approx_equals(scroller.scrollLeft, snap_point_2.offsetLeft, 1,
           "scroller snaps to the left of snap_point_2");
-    }, "snapchanged is not fired if snap target doesn't change on " +
+    }, "scrollsnapchange is not fired if snap target doesn't change on " +
        "programmatic scroll");
   }
   </script>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-root-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-root-scroll.tentative.html
similarity index 84%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-root-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-root-scroll.tentative.html
index a59d9c58590..8aff17b6573 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-root-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-root-scroll.tentative.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title> CSS Scroll Snap 2 Test: snapchanged events</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange events</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
@@ -90,8 +90,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on touch scroll");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on touch scroll");
 
     // Wheel scroll test.
     promise_test(async (t) => {
@@ -110,8 +110,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on wheel scroll");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on wheel scroll");
 
     // Scrollbar drag test.
     promise_test(async (t) => {
@@ -140,8 +140,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on scrollbar drag");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on scrollbar drag");
 
     // Keyboard test.
     promise_test(async (t) => {
@@ -158,10 +158,10 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on keydown press");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on keydown press");
 
-    // Touch scroll test (onsnapchanged variant).
+    // Touch scroll test (onscrollsnapchange variant).
     promise_test(async (t) => {
       await waitForCompositorCommit();
       const start_pos = {
@@ -180,12 +180,12 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data, /*use_onsnap_memeber*/true);
-    }, "Document.snapchanged event fires after snap target changes on touch " +
+      await test_scrollsnapchange(t, test_data, /*use_onsnap_memeber*/true);
+    }, "Document.scrollsnapchange event fires after snap target changes on touch " +
        "scroll");
 
     promise_test(async (t) => {
-      await test_no_snapchanged(t, scroller, /*delta*/10);
-    }, "snapchanged is not fired if snap target doesn't change on user scroll");
+      await test_no_scrollsnapchange(t, scroller, /*delta*/10);
+    }, "scrollsnapchange is not fired if snap target doesn't change on user scroll");
   </script>
 </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-scroll.tentative.html
similarity index 84%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-scroll.tentative.html
index d2c2789c88a..c3f1b82612b 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-on-user-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-on-user-scroll.tentative.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title> CSS Scroll Snap 2 Test: snapchanged events</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange events</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
@@ -97,8 +97,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on touch scroll");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on touch scroll");
 
     // Wheel scroll test.
     promise_test(async (t) => {
@@ -117,8 +117,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on wheel scroll");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on wheel scroll");
 
     // Scrollbar drag test.
     promise_test(async (t) => {
@@ -144,8 +144,8 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on scrollbar drag");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on scrollbar drag");
 
     // Keyboard test.
     promise_test(async (t) => {
@@ -162,10 +162,10 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data);
-    }, "snapchanged event fires after snap target changes on keydown press");
+      await test_scrollsnapchange(t, test_data);
+    }, "scrollsnapchange event fires after snap target changes on keydown press");
 
-    // Touch scroll test (onsnapchanged variant).
+    // Touch scroll test (onscrollsnapchange variant).
     promise_test(async (t) => {
       await waitForCompositorCommit();
       const start_pos = {
@@ -184,12 +184,12 @@
           y: offset_to_snap_point_2.y,
         }
       };
-      await test_snapchanged(t, test_data, /*use_onsnap_memeber*/true);
-    }, "Element.onsnapchanged event fires after snap target changes on touch " +
+      await test_scrollsnapchange(t, test_data, /*use_onsnap_memeber*/true);
+    }, "Element.onscrollsnapchange event fires after snap target changes on touch " +
        "scroll");
 
     promise_test(async (t) => {
-      await test_no_snapchanged(t, scroller, /*delta*/10);
-    }, "snapchanged is not fired if snap target doesn't change on user scroll");
+      await test_no_scrollsnapchange(t, scroller, /*delta*/10);
+    }, "scrollsnapchange is not fired if snap target doesn't change on user scroll");
   </script>
 </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-same-targets-after-layout-changed.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-same-targets-after-layout-changed.html
similarity index 77%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-same-targets-after-layout-changed.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-same-targets-after-layout-changed.html
index 4d16bd80a3a..dddad7ecb87 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-same-targets-after-layout-changed.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-same-targets-after-layout-changed.html
@@ -61,13 +61,13 @@
   <script>
     let unreached_func = null;
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanged");
+      checkSnapEventSupport("scrollsnapchange");
       await waitForCompositorCommit();
-      unreached_func = t.unreached_func("snapchanged shouldn't fire " +
+      unreached_func = t.unreached_func("scrollsnapchange shouldn't fire " +
           "since the scroller is snapped to the same elements.");
-      scroller.addEventListener("snapchanged", unreached_func);
+      scroller.addEventListener("scrollsnapchange", unreached_func);
       t.add_cleanup(() => {
-        scroller.removeEventListener("snapchanged", unreached_func);
+        scroller.removeEventListener("scrollsnapchange", unreached_func);
       });
       assert_greater_than(right.offsetLeft, left.offsetLeft,
           "boxes have switched positions.");
@@ -78,27 +78,27 @@
       assert_less_than(right.offsetLeft, left.offsetLeft,
           "boxes have switched positions.");
       await waitForCompositorCommit();
-    }, "snapchanged doesn't fire after layout change if snapped to the same " +
+    }, "scrollsnapchange doesn't fire after layout change if snapped to the same " +
     "elements");
 
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanged");
+      checkSnapEventSupport("scrollsnapchange");
       await waitForCompositorCommit();
-      unreached_func = t.unreached_func("snapchanged shouldn't fire " +
+      unreached_func = t.unreached_func("scrollsnapchange shouldn't fire " +
           "since the scroller is snapped to the same elements.");
-      scroller.addEventListener("snapchanged", unreached_func);
+      scroller.addEventListener("scrollsnapchange", unreached_func);
       t.add_cleanup(() => {
-        scroller.removeEventListener("snapchanged", unreached_func);
+        scroller.removeEventListener("scrollsnapchange", unreached_func);
       });
       const scrollend_promise = waitForScrollendEventNoTimeout(scroller);
       // Move the boxes to the same vertical level. Both boxes should still be
-      // considered snapped to so snapchanged should not be triggerred.
+      // considered snapped to so scrollsnapchange should not be triggerred.
       right.style.top = `0px`;
       left.style.top = `0px`;
       await scrollend_promise;
       assert_equals(scroller.scrollTop, 0);
       await waitForCompositorCommit();
-    }, "snapchanged doesn't fire after snap to the same targets after scroll. " +
+    }, "scrollsnapchange doesn't fire after snap to the same targets after scroll. " +
     "elements");
 
   </script>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-scrolling-non-snapping-axis.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-scrolling-non-snapping-axis.tentative.html
similarity index 76%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-scrolling-non-snapping-axis.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-scrolling-non-snapping-axis.tentative.html
index e39fc0c44ee..32393fe780b 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-scrolling-non-snapping-axis.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-scrolling-non-snapping-axis.tentative.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title> CSS Scroll Snap 2 Test: snapchanged events</title>
+    <title> CSS Scroll Snap 2 Test: scrollsnapchange events</title>
     <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
@@ -49,29 +49,29 @@
 
         scroller.focus();
 
-        const snapchanged_promise = waitForSnapEvent(scroller, "snapchanged");
+        const scrollsnapchange_promise = waitForSnapEvent(scroller, "scrollsnapchange");
         await test_driver.send_keys(scroller, KEY_CODE_MAP["ArrowRight"]);
-        const snap_event = await snapchanged_promise;
+        const snap_event = await scrollsnapchange_promise;
 
-        assert_equals(snap_event, null, "no snapchanged event fired as " +
+        assert_equals(snap_event, null, "no scrollsnapchange event fired as " +
           "scroller doesn't snap in the x axis");
-      }, "keyboard scroll on non-snapping axis doesn't trigger snapchanged");
+      }, "keyboard scroll on non-snapping axis doesn't trigger scrollsnapchange");
 
       promise_test(async (t) => {
         await waitForScrollReset(t, scroller);
         await waitForCompositorCommit();
         scroller.focus();
 
-        const snapchanged_promise = waitForSnapEvent(scroller, "snapchanged");
+        const scrollsnapchange_promise = waitForSnapEvent(scroller, "scrollsnapchange");
         const wheel_scroll_amount = 25;
         new test_driver.Actions().scroll(0, 0,
           wheel_scroll_amount,
           0,
           { origin: scroller }).send();
-        const snap_event = await snapchanged_promise;
-        assert_equals(snap_event, null, "no snapchanged event fired as " +
+        const snap_event = await scrollsnapchange_promise;
+        assert_equals(snap_event, null, "no scrollsnapchange event fired as " +
           "scroller doesn't snap in the x axis");
-      }, "wheel scroll on non-snapping axis doesn't trigger snapchanged");
+      }, "wheel scroll on non-snapping axis doesn't trigger scrollsnapchange");
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-with-proximity-strictness.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-with-proximity-strictness.tentative.html
similarity index 74%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-with-proximity-strictness.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-with-proximity-strictness.tentative.html
index 96cab337398..9c2e3dfbe89 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanged/snapchanged-with-proximity-strictness.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchange/scrollsnapchange-with-proximity-strictness.tentative.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <title>
-  <title> CSS Scroll Snap 2 Test: snapchanged events on proximity strictness container</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange events on proximity strictness container</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events"/>
 </title>
 <script src="/resources/testharness.js"></script>
@@ -46,35 +46,35 @@
   let resolve_func = null;
 
   promise_test(async (test) => {
-    checkSnapEventSupport("snapchanged");
+    checkSnapEventSupport("scrollsnapchange");
     await waitForCompositorCommit();
     // The initial snap position is at (0, 0).
     assert_equals(scroller.scrollTop, 0);
     assert_equals(scroller.scrollLeft, 0);
 
-    let snapchanged_promise = waitForSnapChangedEvent(scroller);
+    let scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller);
     // Scroll to a position where it's outside of the scroll-snap proximity
     // threshold, so that it won't trigger snapping.
     scroller.scrollTo(0, 250);
 
-    // snapchanged should fire as we've moved from within the proximity range
+    // scrollsnapchange should fire as we've moved from within the proximity range
     // to outside the proximity range and are no longer snapped.
-    let evt = await snapchanged_promise;
+    let evt = await scrollsnapchange_promise;
     assert_equals(scroller.scrollTop, 250);
     assertSnapEvent(evt, { block: null, inline: null });
     evt = null;
 
-    snapchanged_promise = waitForSnapChangedEvent(scroller);
+    scrollsnapchange_promise = waitForScrollSnapChangeEvent(scroller);
     // Scroll to a position within the scroll-snap proximity
     // threshold, so that it triggers snapping.
     scroller.scrollTo(0, 190);
 
-    evt = await snapchanged_promise;
+    evt = await scrollsnapchange_promise;
     assert_equals(scroller.scrollTop, 0);
-    // snapchanged should fire as we've moved from outside the proximity range
+    // scrollsnapchange should fire as we've moved from outside the proximity range
     // to inside the proximity range and are once again snapped.
     assertSnapEvent(evt, { block: target, inline: null });
-  }, "Snapchanged fires when scrolling outside proximity range.");
+  }, "Scrollsnapchange fires when scrolling outside proximity range.");
   </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-after-layout-change.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-after-layout-change.tentative.html
similarity index 81%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-after-layout-change.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-after-layout-change.tentative.html
index 0c0bfb623e1..b131abe5988 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-after-layout-change.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-after-layout-change.tentative.html
@@ -60,10 +60,10 @@
   <script>
     const scroller = document.getElementById("scroller");
     promise_test(async (t) => {
-      // This tests snapchanging firing after a layout change in the middle of a
-      // touch scroll. We start a touch scroll far enough that snapchanging
+      // This tests scrollsnapchanging firing after a layout change in the middle of a
+      // touch scroll. We start a touch scroll far enough that scrollsnapchanging
       // fires and then, with the pointer still down, we change the layout so
-      // that snapchanging should fire with a different target.
+      // that scrollsnapchanging should fire with a different target.
       await waitForScrollReset(t, scroller);
       await waitForCompositorCommit();
 
@@ -75,11 +75,11 @@
       let evt_promise;
       let snap_evt;
 
-      const save_snapchanging_evt = (evt) => { snap_evt = evt; }
-      evt_promise = scroller.addEventListener("snapchanging",
-                                              save_snapchanging_evt);
+      const save_scrollsnapchanging_evt = (evt) => { snap_evt = evt; }
+      evt_promise = scroller.addEventListener("scrollsnapchanging",
+                                              save_scrollsnapchanging_evt);
       // We wait to reach the expected scroll position rather than waiting for a
-      // snapchanging event to avoid timing out if the snapchanging event does
+      // scrollsnapchanging event to avoid timing out if the scrollsnapchanging event does
       // not fire.
       const scroll_promise = new Promise((resolve) => {
         scroller.addEventListener("scroll", async () => {
@@ -96,15 +96,15 @@
         .pointerDown()
         .addTick()
         .pause(200)
-        // Drag closer to box2, which should trigger a snapchanging event.
+        // Drag closer to box2, which should trigger a scrollsnapchanging event.
         .pointerMove(start_pos_x - drag_amt, pos_y)
         .send();
 
-      // assert snapchanging that should have already happened.
+      // assert scrollsnapchanging that should have already happened.
       await scroll_promise;
       assertSnapEvent(snap_evt, { block: null, inline: box2 });
 
-      evt_promise = waitForSnapEvent(scroller, "snapchanging", false);
+      evt_promise = waitForSnapEvent(scroller, "scrollsnapchanging", false);
       // Change layout while pointer is still down.
       let box2_prev_left = getComputedStyle(box2).getPropertyValue("left");
       let box3_prev_left = getComputedStyle(box3).getPropertyValue("left");
@@ -112,7 +112,7 @@
       box3.style.left = box2_prev_left;
       snap_evt = await evt_promise;
       assertSnapEvent(snap_evt, { block: null, inline: box3 });
-    }, "snapchanging fires after layout change");
+    }, "scrollsnapchanging fires after layout change");
   </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-root-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-root-scroll.tentative.html
similarity index 86%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-root-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-root-scroll.tentative.html
index 54c2c95c501..110805f9f2e 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-root-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-root-scroll.tentative.html
@@ -82,8 +82,8 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "snapchanging fires on programmatic scrolls that changes a scroller's" +
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "scrollsnapchanging fires on programmatic scrolls that changes a scroller's" +
     " snap targets.");
 
     promise_test(async (t) => {
@@ -99,16 +99,16 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging",
+      await test_snap_event(t, test_data, "scrollsnapchanging",
                             /*use_onsnap_member*/true);
-    }, "Document.snapchanging fires on programmatic scrolls that changes a" +
+    }, "Document.scrollsnapchanging fires on programmatic scrolls that changes a" +
        "scroller's snap targets.");
 
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanging");
+      checkSnapEventSupport("scrollsnapchanging");
       await waitForScrollReset(t, scroller);
       await waitForCompositorCommit();
-      let snap_event_promise = waitForSnapEvent(document, "snapchanging", false);
+      let snap_event_promise = waitForSnapEvent(document, "scrollsnapchanging", false);
       // The snap areas are far apart enough that 10px is not enough to trigger
       // a change in snap targets.
       const small_scroll_offset = 10;
@@ -117,7 +117,7 @@
       assert_equals(evt, null, "no snap event since scroller is back to top");
       assert_equals(scroller.scrollTop, 0, "scroller snaps back to the top");
       assert_equals(scroller.scrollLeft, 0, "scroller snaps back to the left");
-    }, "snapchanging does not fire on programmatic scrolls that don't " +
+    }, "scrollsnapchanging does not fire on programmatic scrolls that don't " +
     "trigger a change in snap targets.");
   </script>
 </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-scroll.tentative.html
similarity index 86%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-scroll.tentative.html
index 0bd65f8e428..41f23d25573 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-programmatic-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-programmatic-scroll.tentative.html
@@ -89,8 +89,8 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "snapchanging fires on programmatic scrolls that changes a scroller's" +
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "scrollsnapchanging fires on programmatic scrolls that changes a scroller's" +
     " snap targets.");
 
     promise_test(async (t) => {
@@ -106,16 +106,16 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging",
+      await test_snap_event(t, test_data, "scrollsnapchanging",
                             /*use_onsnap_member*/true);
-    }, "Element.onsnapchanging fires on programmatic scrolls that changes a " +
+    }, "Element.onscrollsnapchanging fires on programmatic scrolls that changes a " +
        "scroller's snap targets.");
 
     promise_test(async (t) => {
-      checkSnapEventSupport("snapchanging");
+      checkSnapEventSupport("scrollsnapchanging");
       await waitForScrollReset(t, scroller);
       await waitForCompositorCommit();
-      let snap_event_promise = waitForSnapEvent(scroller, "snapchanging", false);
+      let snap_event_promise = waitForSnapEvent(scroller, "scrollsnapchanging", false);
       // The snap areas are far apart enough that 10px is not enough to trigger
       // a change in snap targets.
       const small_scroll_offset = 10;
@@ -126,7 +126,7 @@
       assert_equals(evt, null, "no snap event since scroller is back to top");
       assert_equals(scroller.scrollTop, 0, "scroller snaps back to the top");
       assert_equals(scroller.scrollLeft, 0, "scroller snaps back to the left");
-    }, "snapchanging should not fire since the snap target doesn't change.");
+    }, "scrollsnapchanging should not fire since the snap target doesn't change.");
   </script>
 </body>
 
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-root-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-root-scroll.tentative.html
similarity index 83%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-root-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-root-scroll.tentative.html
index 8054db548db..50d628ba08a 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-root-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-root-scroll.tentative.html
@@ -94,8 +94,8 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "touch scrolling fires snapchanging.");
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "touch scrolling fires scrollsnapchanging.");
 
     // Wheel scroll test.
     promise_test(async (t) => {
@@ -112,8 +112,8 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "mouse wheel scroll triggers snapchanging.");
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "mouse wheel scroll triggers scrollsnapchanging.");
 
     // Scrollbar drag test.
     promise_test(async (t) => {
@@ -138,8 +138,8 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "scrollbar dragging fires snapchanging.");
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "scrollbar dragging fires scrollsnapchanging.");
 
     // Keyboard test.
     promise_test(async (t) => {
@@ -156,10 +156,10 @@
            y: snap_area_2.offsetTop
         }
        };
-      await test_snap_event(t, test_data, "snapchanging");
-    }, "keyboard scroll triggers snapchanging.");
+      await test_snap_event(t, test_data, "scrollsnapchanging");
+    }, "keyboard scroll triggers scrollsnapchanging.");
 
-    // Touch scroll test (onsnapchanging variant).
+    // Touch scroll test (onscrollsnapchanging variant).
     promise_test(async (t) => {
       await waitForCompositorCommit();
       const scroller_middle = Math.round(scroller.clientWidth / 2);
@@ -176,9 +176,9 @@
           y: snap_area_2.offsetTop
         }
       };
-      await test_snap_event(t, test_data, "snapchanging",
+      await test_snap_event(t, test_data, "scrollsnapchanging",
         /*use_onsnap_memeber*/true);
-    }, "touch scrolling fires Document.onsnapchanging.");
+    }, "touch scrolling fires Document.onscrollsnapchanging.");
 
     // Touch scroll test: peek at snap_area_2 and then drag back to
     // snap_area_1.
@@ -187,7 +187,7 @@
       await waitForCompositorCommit();
       const pos_x = Math.round(scroller.clientWidth / 2);
       const start_pos_y = Math.round(snap_area_2.offsetTop);
-      let evts_promise = waitForEventsUntil(document, "snapchanging",
+      let evts_promise = waitForEventsUntil(document, "scrollsnapchanging",
         waitForScrollendEventNoTimeout(document));
       await new test_driver.Actions()
         .addPointer("TestPointer", "touch")
@@ -195,25 +195,25 @@
         .pointerDown()
         .addTick()
         .pause(200)
-        // Drag up to y=0, which should trigger a snapchanging event.
+        // Drag up to y=0, which should trigger a scrollsnapchanging event.
         .pointerMove(pos_x, 0)
         .addTick()
         .pause(200)
         // Drag down again to start position, which should trigger a
-        // snapchanging event.
+        // scrollsnapchanging event.
         .pointerMove(pos_x, start_pos_y)
         .pointerUp()
         .send();
       let evts = await evts_promise;
-      assert_equals(evts.length, 2, "2 snapchanging events are seens");
+      assert_equals(evts.length, 2, "2 scrollsnapchanging events are seens");
       assertSnapEvent(evts[0], { block: snap_area_2, inline: null });
       assertSnapEvent(evts[1], { block: snap_area_1, inline: null });
-    }, "snapchanging fires as scroll moves through different snap targets.");
+    }, "scrollsnapchanging fires as scroll moves through different snap targets.");
 
-    // snapchanging doesn't fire test.
+    // scrollsnapchanging doesn't fire test.
     promise_test(async (t) => {
-      test_no_snapchanging(t, scroller, 10);
-    }, "snapchanging doesn't fire if scroll doesn't reach different snap " +
+      test_no_scrollsnapchanging(t, scroller, 10);
+    }, "scrollsnapchanging doesn't fire if scroll doesn't reach different snap " +
     "targets.");
   </script>
 </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-scroll.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-scroll.tentative.html
similarity index 84%
rename from tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-scroll.tentative.html
rename to tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-scroll.tentative.html
index 3755369a2fc..ca756bd041b 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapchanging/snapchanging-on-user-scroll.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/scrollsnapchanging/scrollsnapchanging-on-user-scroll.tentative.html
@@ -84,8 +84,8 @@
             y: snap_area_2.offsetTop
           }
         };
-        await test_snap_event(t, test_data, "snapchanging");
-      }, "touch scrolling fires snapchanging.");
+        await test_snap_event(t, test_data, "scrollsnapchanging");
+      }, "touch scrolling fires scrollsnapchanging.");
 
       // Wheel scroll test.
       promise_test(async (t) => {
@@ -103,8 +103,8 @@
             y: snap_area_2.offsetTop
           }
         };
-        await test_snap_event(t, test_data, "snapchanging");
-      }, "mouse wheel scroll triggers snapchanging.");
+        await test_snap_event(t, test_data, "scrollsnapchanging");
+      }, "mouse wheel scroll triggers scrollsnapchanging.");
 
       // Scrollbar drag test.
       promise_test(async (t) => {
@@ -130,8 +130,8 @@
              y: snap_area_2.offsetTop
           }
          };
-        await test_snap_event(t, test_data, "snapchanging");
-      }, "scrollbar dragging fires snapchanging.");
+        await test_snap_event(t, test_data, "scrollsnapchanging");
+      }, "scrollbar dragging fires scrollsnapchanging.");
 
       // Keyboard test.
       promise_test(async (t) => {
@@ -148,8 +148,8 @@
              y: snap_area_2.offsetTop
           }
          };
-        await test_snap_event(t, test_data, "snapchanging");
-      }, "keyboard scroll triggers snapchanging.");
+        await test_snap_event(t, test_data, "scrollsnapchanging");
+      }, "keyboard scroll triggers scrollsnapchanging.");
 
       // Touch scroll test: peek at snap_area_2 and then drag back to
       // snap_area_1.
@@ -158,7 +158,7 @@
         await waitForCompositorCommit();
         const pos_x = Math.round(scroller.clientWidth / 2);
         const start_pos_y = Math.round(snap_area_2.offsetTop);
-        let evts_promise = waitForEventsUntil(scroller, "snapchanging",
+        let evts_promise = waitForEventsUntil(scroller, "scrollsnapchanging",
         waitForScrollendEventNoTimeout(scroller));
         await new test_driver.Actions()
         .addPointer("TestPointer", "touch")
@@ -166,20 +166,20 @@
         .pointerDown()
         .addTick()
         .pause(200)
-        // Drag up to y=0, which should trigger a snapchanging event.
+        // Drag up to y=0, which should trigger a scrollsnapchanging event.
         .pointerMove(pos_x, 0)
         .addTick()
         .pause(200)
         // Drag down again to start position, which should trigger a
-        // snapchanging event.
+        // scrollsnapchanging event.
         .pointerMove(pos_x, start_pos_y)
         .pointerUp()
           .send();
         let evts = await evts_promise;
-        assert_equals(evts.length, 2, "2 snapchanging events are seens");
+        assert_equals(evts.length, 2, "2 scrollsnapchanging events are seens");
         assertSnapEvent(evts[0], { block: snap_area_2, inline: null });
         assertSnapEvent(evts[1], { block: snap_area_1, inline: null });
-      }, "snapchanging fires as scroll moves through different snap targets.");
+      }, "scrollsnapchanging fires as scroll moves through different snap targets.");
 
       // Touch scroll test.
       promise_test(async (t) => {
@@ -198,14 +198,14 @@
             y: snap_area_2.offsetTop
           }
         };
-        await test_snap_event(t, test_data, "snapchanging",
+        await test_snap_event(t, test_data, "scrollsnapchanging",
                               /*use_onsnap_member*/true);
-      }, "touch scrolling fires Element.onsnapchanging.");
+      }, "touch scrolling fires Element.onscrollsnapchanging.");
 
-    // snapchanging doesn't fire test.
+    // scrollsnapchanging doesn't fire test.
     promise_test(async (t) => {
-      test_no_snapchanging(t, scroller, 10);
-    }, "snapchanging doesn't fire if scroll doesn't reach different snap " +
+      test_no_scrollsnapchanging(t, scroller, 10);
+    }, "scrollsnapchanging doesn't fire if scroll doesn't reach different snap " +
     "targets.");
     </script>
   </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snap-events-with-pseudo-target.tentative.html b/tests/wpt/tests/css/css-scroll-snap-2/snap-events-with-pseudo-target.tentative.html
index baa3efc7ba7..6b44d83d37f 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snap-events-with-pseudo-target.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/snap-events-with-pseudo-target.tentative.html
@@ -73,13 +73,13 @@
       };
 
       promise_test(async (t) => {
-        await test_snapchanged(t, test_data);
-      }, "snapTarget for snapchanged is the owning element when a snap area " +
+        await test_scrollsnapchange(t, test_data);
+      }, "snapTarget for scrollsnapchange is the owning element when a snap area " +
          "belongs to a pseudo-element");
 
       promise_test(async (t) => {
-        await test_snap_event(t, test_data, "snapchanging");
-      }, "snapTarget for snapchanging is the owning element when a snap area " +
+        await test_snap_event(t, test_data, "scrollsnapchanging");
+      }, "snapTarget for scrollsnapchanging is the owning element when a snap area " +
          "belongs to a pseudo-element");
     </script>
   </body>
diff --git a/tests/wpt/tests/css/css-scroll-snap-2/snapevents-at-document-bubble-to-window.html b/tests/wpt/tests/css/css-scroll-snap-2/snapevents-at-document-bubble-to-window.html
index e50be0b6b25..a7251061cd6 100644
--- a/tests/wpt/tests/css/css-scroll-snap-2/snapevents-at-document-bubble-to-window.html
+++ b/tests/wpt/tests/css/css-scroll-snap-2/snapevents-at-document-bubble-to-window.html
@@ -3,7 +3,7 @@
 
 <head>
   <meta charset="utf-8">
-  <title> CSS Scroll Snap 2 Test: snapchanged event on the document bubbles</title>
+  <title> CSS Scroll Snap 2 Test: scrollsnapchange event on the document bubbles</title>
   <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
@@ -63,33 +63,33 @@
     promise_test(async(t) => {
       await waitForCompositorCommit();
 
-      let snapchanging_promise = waitForSnapEvent(window, "snapchanging");
-      let snapchanged_promise = waitForSnapEvent(window, "snapchanged");
+      let scrollsnapchanging_promise = waitForSnapEvent(window, "scrollsnapchanging");
+      let scrollsnapchange_promise = waitForSnapEvent(window, "scrollsnapchange");
       document.scrollingElement.scrollTo(0, snap_point_2.offsetTop);
-      let snapchanging_evt = await snapchanging_promise;
-      let snapchanged_evt = await snapchanged_promise;
+      let scrollsnapchanging_evt = await scrollsnapchanging_promise;
+      let scrollsnapchange_evt = await scrollsnapchange_promise;
 
-      assertSnapEvent(snapchanging_evt, { inline: null, block: snap_point_2 });
-      assertSnapEvent(snapchanged_evt, { inline: null, block: snap_point_2 });
-    }, "snapchanged bubbles when fired at the document (addEventListener).");
+      assertSnapEvent(scrollsnapchanging_evt, { inline: null, block: snap_point_2 });
+      assertSnapEvent(scrollsnapchange_evt, { inline: null, block: snap_point_2 });
+    }, "scrollsnapchange bubbles when fired at the document (addEventListener).");
 
     promise_test(async(t) => {
       await waitForScrollReset(t, document.scrollingElement);
       await waitForCompositorCommit();
 
-      let snapchanging_promise = waitForSnapEvent(window, "snapchanging",
+      let scrollsnapchanging_promise = waitForSnapEvent(window, "scrollsnapchanging",
                                     /*scroll_happens=*/true,
                                     /*use_onsnap_member=*/true);
-      let snapchanged_promise = waitForSnapEvent(window, "snapchanged",
+      let scrollsnapchange_promise = waitForSnapEvent(window, "scrollsnapchange",
                                     /*scroll_happens=*/true,
                                     /*use_onsnap_member=*/true);
       document.scrollingElement.scrollTo(0, snap_point_2.offsetTop);
-      let snapchanging_evt = await snapchanging_promise;
-      let snapchanged_evt = await snapchanged_promise;
+      let scrollsnapchanging_evt = await scrollsnapchanging_promise;
+      let scrollsnapchange_evt = await scrollsnapchange_promise;
 
-      assertSnapEvent(snapchanging_evt, { inline: null, block: snap_point_2 });
-      assertSnapEvent(snapchanged_evt, { inline: null, block: snap_point_2 });
-    }, "snapchanged bubbles when fired at the document (onsnapchanged).");
+      assertSnapEvent(scrollsnapchanging_evt, { inline: null, block: snap_point_2 });
+      assertSnapEvent(scrollsnapchange_evt, { inline: null, block: snap_point_2 });
+    }, "scrollsnapchange bubbles when fired at the document (onscrollsnapchange).");
   </script>
 </body>
 
diff --git a/tests/wpt/tests/css/css-transforms/transform-important.html b/tests/wpt/tests/css/css-transforms/transform-important.html
index f35450b350d..246c9ec5c4e 100644
--- a/tests/wpt/tests/css/css-transforms/transform-important.html
+++ b/tests/wpt/tests/css/css-transforms/transform-important.html
@@ -7,11 +7,12 @@
     <script src="/resources/testharnessreport.js"></script>
   </head>
   <body>
-    <div id="target" style="transform: translateX(10px) !important">Some text.</div>
+    <div id="target" style="transform: translateX(10px) !important; will-change: transform !important">Some text.</div>
   </body>
   <script>
 test(() => {
   assert_equals(target.style.transform, 'translateX(10px)');
+  assert_equals(target.style.willChange, 'transform');
 });
   </script>
 </html>
diff --git a/tests/wpt/tests/css/css-typed-om/the-stylepropertymap/properties/anchor-scope.html b/tests/wpt/tests/css/css-typed-om/the-stylepropertymap/properties/anchor-scope.html
new file mode 100644
index 00000000000..1d37b26054c
--- /dev/null
+++ b/tests/wpt/tests/css/css-typed-om/the-stylepropertymap/properties/anchor-scope.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>'anchor-scope' property</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#anchor-scope">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../../resources/testhelper.js"></script>
+<script src="resources/testsuite.js"></script>
+<body>
+<div id="log"></div>
+<script>
+'use strict';
+
+runPropertyTests('anchor-scope', [
+  { syntax: 'none' },
+  { syntax: 'all' },
+]);
+
+runUnsupportedPropertyTests('anchor-scope', [
+  '--a', '--a, --b'
+]);
+
+</script>
diff --git a/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html
index 6d15c3f2265..efe61160c03 100644
--- a/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html
+++ b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-height-interpolation.tentative.html
@@ -165,17 +165,29 @@
     });
   }
 
-  test_no_interpolation({
+  test_interpolation({
     property: 'height',
     from: 'calc-size(20px, size)',
-    to: 'calc-size(50px, size)',
-  });
+    to: 'calc-size(60px, size)',
+  }, [
+    { at: -0.25, expect: '10px' },
+    { at: 0, expect: '20px' },
+    { at: 0.75, expect: '50px' },
+    { at: 1, expect: '60px' },
+    { at: 1.25, expect: '70px' },
+  ]);
 
-  test_no_interpolation({
+  test_interpolation({
     property: 'height',
-    from: 'calc-size(50%, size)',
+    from: 'calc-size(50%, size)', /* 150px */
     to: 'calc-size(50px, size)',
-  });
+  }, [
+    { at: -0.25, expect: '175px' },
+    { at: 0, expect: '150px' },
+    { at: 0.75, expect: '75px' },
+    { at: 1, expect: '50px' },
+    { at: 1.25, expect: '25px' },
+  ]);
 
   test_interpolation({
     property: 'height',
@@ -228,4 +240,95 @@
 
   auto_style_element.remove();
 
+  test_no_interpolation({
+    property: 'height',
+    from: 'calc-size(auto, size)',
+    to: 'calc-size(50%, size)',
+  });
+
+  test_no_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(auto, size / 2), size * 2)',
+    to: 'calc-size(12.5%, size * 4)',
+  });
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(auto, size / 2), size * 2)',
+    to: 'calc-size(auto, size * 2)',
+  }, [
+    { at: -0.25, expect: '75px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '175px' },
+    { at: 1, expect: '200px' },
+    { at: 1.25, expect: '225px' },
+  ]);
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(min-content, size / 2), size * 2)', /* 100px */
+    to: 'calc-size(calc-size(any, 150px), size * 2)', /* 300px */
+  }, [
+    { at: -0.25, expect: '50px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '250px' },
+    { at: 1, expect: '300px' },
+    { at: 1.25, expect: '350px' },
+  ]);
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(auto, size / 2), size * 2)',
+    to: 'calc-size(auto, size * 5)',
+  }, [
+    { at: -0.125, expect: '50px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '400px' },
+    { at: 1, expect: '500px' },
+    { at: 1.25, expect: '600px' },
+  ]);
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(100px, size / 2), size * 2)',
+    to: 'calc-size(12.5%, size * 4)',
+  }, [
+    { at: -0.25, expect: '87.5px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '137.5px' },
+    { at: 1, expect: '150px' },
+    { at: 1.25, expect: '162.5px' },
+  ]);
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(100px, size * 2), size * 2)',
+    to: 'calc-size(100px, size * 3)',
+  }, [
+    { at: -0.25, expect: '425px' },
+    { at: 0, expect: '400px' },
+    { at: 0.75, expect: '325px' },
+    { at: 1, expect: '300px' },
+    { at: 1.25, expect: '275px' },
+  ]);
+
+  test_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(auto, size / 2), size * 2)',
+    to: 'calc-size(calc-size(calc-size(auto, size + size / 2 + size / 2), size + size), size / 4 + size / 8 + size / 8)',
+  }, [
+    { at: -0.25, expect: '75px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '175px' },
+    { at: 1, expect: '200px' },
+    { at: 1.25, expect: '225px' },
+  ]);
+
+  // Test that we don't interpolate if doing so would require too much expansion.
+  test_no_interpolation({
+    property: 'height',
+    from: 'calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(calc-size(auto, size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2), size / 2 + size / 2)',
+    to: 'calc-size(auto, size * 3)',
+  });
+
 </script>
diff --git a/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html
new file mode 100644
index 00000000000..a34aec06085
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-interpolation-expansion.tentative.html
@@ -0,0 +1,119 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>height: calc-size() animations</title>
+<link rel="help" href="https://drafts.csswg.org/css-values-5/#calc-size">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+
+#parent {
+  height: 200px;
+}
+
+#test {
+}
+
+</style>
+
+<div id="parent">
+  <div id="test">
+  </div>
+</div>
+
+<script>
+
+/**
+ * This test tests the expansions needed to support interpolation of
+ * calc-size() values.  These cannot be tested through getComputedStyle
+ * so (as far as I can tell) the only web-exposed way to test them is
+ * through getComputedStyleMap.
+ *
+ * However, it's also likely that some of the details tested here are
+ * not fully specified.  Once we have multiple implementations that
+ * implement all of the necessary features for this test, we should
+ * probably look at improving that interoperability.
+ *
+ * TODO: The sorting of the nodes in a multiplication seems wrong.
+ */
+
+var TESTS = [
+  {
+    property: "height",
+    start: "auto",
+    end: "calc-size(0px)",
+    expected: {
+      0.75: "calc-size(auto, 0px + size * 0.25)",
+    },
+  },
+  {
+    property: "height",
+    start: "0px",
+    end: "calc-size(calc-size(min-content, size + 20px), size * 2)",
+    expected: {
+      0.75: "calc-size(calc-size(min-content, 20px + size), 0px + size * 2 * 0.75)",
+    },
+  },
+  {
+    property: "height",
+    start: "calc-size(min-content, size * 4)",
+    end: "calc-size(calc-size(min-content, size + 20px), size * 2)",
+    expected: {
+      0.75: "calc-size(min-content, size * 4 * 0.25 + (20px + size) * 2 * 0.75)",
+    },
+  },
+  {
+    property: "width",
+    start: "calc-size(fit-content, 20px)",
+    end: "calc-size(calc-size(fit-content, 40px), size)",
+    expected: {
+      0.75: "calc-size(fit-content, 35px)",
+    },
+  },
+  {
+    // Check that we do expansion on one basis even when the other basis is 'any'.
+    property: "width",
+    start: "calc-size(any, 20px)",
+    end: "calc-size(calc-size(fit-content, 40px), size)",
+    expected: {
+      0.75: "calc-size(fit-content, 35px)",
+    },
+  },
+  {
+    property: "width",
+    start: "calc-size(calc-size(any, 30px), 20px)",
+    end: "calc-size(calc-size(fit-content, 40px), size)",
+    expected: {
+      0.75: "calc-size(fit-content, 35px)",
+    },
+  },
+  {
+    property: "width",
+    start: "calc-size(fit-content, 20px)",
+    end: "calc-size(calc-size(fit-content, 3 * size + 10px), min(size + 20px, size * 2 - 30px) + size * 2 + 80px)",
+    expected: {
+      0.75: "calc-size(fit-content, 5px + min(30px + 3 * size, 30px + 2 * 0.75 * (3 * size + 10px)) + (10px + 3 * size) * 2 * 0.75)",
+      0.75: "calc-size(fit-content, 5px + (80px + min(10px + 20px + size * 3, -30px + (10px + size * 3) * 2) + (10px + size * 3) * 2) * 0.75)",
+    },
+  },
+];
+
+let e = document.getElementById("test");
+for (let test_item of TESTS) {
+  for (let progress in test_item.expected) {
+    test((t) => {
+      let expected_value = test_item.expected[progress];
+      let property = test_item.property;
+      e.style[property] = test_item.start;
+      let discard = e.computedStyleMap().get(property).toString();
+      e.style.transition = "all 1.0s linear";
+      e.style.transitionProperty = property;
+      e.style.transitionDelay = `${-progress}s`;
+      e.style[property] = test_item.end;
+      let actual_value = e.computedStyleMap().get(property).toString();
+      e.style.transition = "";
+      assert_equals(actual_value, expected_value);
+    }, `value at progress ${progress} in animation of "${test_item.property}" from "${test_item.start}" to "${test_item.end}"`);
+  }
+}
+
+</script>
diff --git a/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html
index 88373306c45..c08198bd4a5 100644
--- a/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html
+++ b/tests/wpt/tests/css/css-values/calc-size/animation/calc-size-width-interpolation.tentative.html
@@ -135,17 +135,29 @@
     });
   }
 
-  test_no_interpolation({
+  test_interpolation({
     property: 'width',
     from: 'calc-size(20px, size)',
-    to: 'calc-size(50px, size)',
-  });
+    to: 'calc-size(60px, size)',
+  }, [
+    { at: -0.25, expect: '10px' },
+    { at: 0, expect: '20px' },
+    { at: 0.75, expect: '50px' },
+    { at: 1, expect: '60px' },
+    { at: 1.25, expect: '70px' },
+  ]);
 
-  test_no_interpolation({
+  test_interpolation({
     property: 'width',
-    from: 'calc-size(50%, size)',
-    to: 'calc-size(50px, size)',
-  });
+    from: 'calc-size(50%, size)', /* 100px */
+    to: 'calc-size(60px, size)',
+  }, [
+    { at: -0.25, expect: '110px' },
+    { at: 0, expect: '100px' },
+    { at: 0.75, expect: '70px' },
+    { at: 1, expect: '60px' },
+    { at: 1.25, expect: '50px' },
+  ]);
 
   test_interpolation({
     property: 'width',
diff --git a/tests/wpt/tests/css/css-values/calc-size/calc-size-typed-om.html b/tests/wpt/tests/css/css-values/calc-size/calc-size-typed-om.html
new file mode 100644
index 00000000000..3af431b4d5c
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/calc-size/calc-size-typed-om.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<title>calc-size() expressions</title>
+<link rel="help" href="https://drafts.csswg.org/css-values-5/#calc-size">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../../support/parsing-testcommon.js"></script>
+
+<div id="test"></div>
+
+<script>
+
+let e = document.getElementById("test");
+
+function test_typed_om_string(property, value, expected) {
+  test((t) => {
+    if (!expected) {
+      expected = value;
+    }
+    e.style.setProperty(property, value);
+    let actual = e.computedStyleMap().get(property).toString();
+    assert_equals(actual, expected);
+    e.style.setProperty(property, "");
+  }, `computedStyleMap serialization of ${property}: ${value}`);
+}
+
+test_typed_om_string("width", "calc-size(auto, size)");
+test_typed_om_string("width", "calc-size(fit-content, size)");
+test_typed_om_string("height", "calc-size(min-content, size * 2)");
+test_typed_om_string("max-width", "calc-size(max-content, size / 2)", "calc-size(max-content, size * 0.5)");
+test_typed_om_string("max-height", "calc-size(fit-content, 30px + size / 2)", "calc-size(fit-content, 30px + size * 0.5)");
+test_typed_om_string("width", "calc-size(fit-content, 50% + size / 2)", "calc-size(fit-content, 50% + size * 0.5)");
+test_typed_om_string("width", "calc-size(any, 25em)", "calc-size(any, 400px)");
+test_typed_om_string("width", "calc-size(any, 40%)");
+test_typed_om_string("width", "calc-size(any, 50px + 30%)", "calc-size(any, 30% + 50px)");
+test_typed_om_string("width", "calc-size(10px, sign(size) * size)");
+test_typed_om_string("width", "calc-size(30px, 25em)", "calc-size(30px, 400px)");
+test_typed_om_string("width", "calc-size(calc-size(any, 30px), 25em)", "calc-size(calc-size(any, 30px), 400px)");
+test_typed_om_string("width", "calc-size(calc-size(2in, 30px), 25em)", "calc-size(calc-size(192px, 30px), 400px)");
+test_typed_om_string("width", "calc-size(calc-size(min-content, 30px), 25em)", "calc-size(calc-size(min-content, 30px), 400px)");
+test_typed_om_string("width", "calc-size(calc-size(min-content, size), size)");
+
+// Based on the discussion in https://github.com/w3c/csswg-drafts/issues/10259
+// this presumes parse-time conversion of the one-argument form to the
+// two-argument form, but this isn't yet specified.
+test_typed_om_string("width", "calc-size(30px)", "calc-size(any, 30px)");
+test_typed_om_string("width", "calc-size(min(30px, 2em))", "calc-size(any, 30px)");
+test_typed_om_string("width", "calc-size(calc-size(any, 30px))", "calc-size(calc-size(any, 30px), size)");
+test_typed_om_string("width", "calc-size(fit-content)", "calc-size(fit-content, size)");
+test_typed_om_string("width", "calc-size(calc-size(fit-content, size * 2))", "calc-size(calc-size(fit-content, size * 2), size)");
+test_typed_om_string("width", "calc-size(calc-size(30px))", "calc-size(calc-size(any, 30px), size)");
+
+</script>
diff --git a/tests/wpt/tests/css/css-values/progress-computed.tentative.html b/tests/wpt/tests/css/css-values/progress-computed.tentative.html
index 933d7075c1a..938b05f11c3 100644
--- a/tests/wpt/tests/css/css-values/progress-computed.tentative.html
+++ b/tests/wpt/tests/css/css-values/progress-computed.tentative.html
@@ -35,4 +35,5 @@ test_math_used('calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 1
 test_math_used('calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) / 4)', '0.45', {prop:'flex-grow', type:'number'});
 test_math_used('calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 4)', '7', {prop:'column-count', type:'number'});
 test_math_used('calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 2)', '3.6', {prop:'scale'});
+test_math_used('rotate3d(progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), progress(21em from 1rem to 11em), calc(progress(11em from 1rem to 11em) * 2deg))', 'rotate3d(2, 2, 2, 2deg)', {prop:'transform'});
 </script>
diff --git a/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe-ref.html b/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe-ref.html
new file mode 100644
index 00000000000..23852cf6a7c
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe-ref.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<title>View transitions: display old paint during update callback (ref)</title>
+<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
+<link rel="author" href="mailto:khushalsagar@chromium.org">
+<style>
+  .new {
+    border: 5px solid orange;
+  }
+</style>
+
+<iframe id="inner" class="new" srcdoc="
+  <style>
+    body {
+      background: blue;
+    }
+  </style>
+  <body>
+    This is old content
+  </body>
+"></iframe>
+</html>
diff --git a/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe.html b/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe.html
new file mode 100644
index 00000000000..4f2aa5360b0
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/paint-holding-in-iframe.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>View transitions: display old paint during update callback</title>
+<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
+<link rel="match" href="paint-holding-in-iframe-ref.html">
+<link rel="author" href="mailto:khushalsagar@chromium.org">
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+<style>
+  .old {
+    border: 5px solid black;
+  }
+  .new {
+    border: 5px solid orange;
+  }
+</style>
+
+<iframe id="inner" class="old" srcdoc="
+  <body>
+    This is old content
+  </body>
+"></iframe>
+<script>
+async function runTest() {
+  await waitForAtLeastOneFrame();
+
+  let contentDocument = inner.contentDocument;
+  contentDocument.body.style.background = "blue";
+
+  contentDocument.startViewTransition(async () => {
+    contentDocument.body.style.background = "green";
+    contentDocument.body.innerText = "This is new content";
+
+    inner.classList.toggle('old');
+    inner.classList.toggle('new');
+
+    takeScreenshot();
+    return new Promise((resolve) => {});
+  });
+}
+onload = runTest;
+</script>
+</html>
diff --git a/tests/wpt/tests/css/filter-effects/backdrop-filter-important.html b/tests/wpt/tests/css/filter-effects/backdrop-filter-important.html
new file mode 100644
index 00000000000..357e84bcbda
--- /dev/null
+++ b/tests/wpt/tests/css/filter-effects/backdrop-filter-important.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Filters: !important flag parsing</title>
+    <link rel="help" href="https://crbug.com/340100643">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <div id="target" style="backdrop-filter: blur(24px) !important">Some text.</div>
+  </body>
+  <script>
+test(() => {
+  assert_equals(target.style.backdropFilter, 'blur(24px)');
+});
+  </script>
+</html>
diff --git a/tests/wpt/tests/custom-elements/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/WEB_FEATURES.yml
index 37708a919e5..7a9f56f6d6a 100644
--- a/tests/wpt/tests/custom-elements/WEB_FEATURES.yml
+++ b/tests/wpt/tests/custom-elements/WEB_FEATURES.yml
@@ -1,3 +1,47 @@
 features:
-- name: custom-elements
-  files: "**"
+- name: autonomous-custom-elements
+  # TODO: Replace this list by an exclusion pattern. It is simply all tests
+  # except the ones for customized built-in elements.
+  files:
+  - adopted-callback.html
+  - attribute-changed-callback.html
+  - connected-callbacks-html-fragment-parsing.html
+  - connected-callbacks-template.html
+  - connected-callbacks.html
+  - cross-realm-callback-report-exception.html
+  - custom-element-reaction-queue.html
+  - CustomElementRegistry-constructor-and-callbacks-are-held-strongly.html
+  - CustomElementRegistry-getName.html
+  - CustomElementRegistry.html
+  - disconnected-callbacks.html
+  - Document-createElement-svg.svg
+  - Document-createElement.html
+  - Document-createElementNS.html
+  - element-internals-aria-element-reflection.html
+  - element-internals-shadowroot.html
+  - ElementInternals-accessibility.html
+  - enqueue-custom-element-callback-reactions-inside-another-callback.html
+  - historical.html
+  - HTMLElement-attachInternals.html
+  - HTMLElement-constructor.html
+  - microtasks-and-constructors.html
+  - overwritten-customElements-global.html
+  - perform-microtask-checkpoint-before-construction-xml-parser.xhtml
+  - perform-microtask-checkpoint-before-construction.html
+  - pseudo-class-defined-print.html
+  - pseudo-class-defined.html
+  - range-and-constructors.html
+  - reaction-timing.html
+  - throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
+  - throw-on-dynamic-markup-insertion-counter-construct.html
+  - throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
+  - throw-on-dynamic-markup-insertion-counter-reactions.html
+  - upgrading.html
+- name: customized-built-in-elements
+  files:
+  - builtin-coverage.html
+  - customized-built-in-constructor-exceptions.html
+  - Document-createElement-customized-builtins.html
+  - Document-createElementNS-customized-builtins.html
+  - HTMLElement-constructor-customized-builtins.html
+  - pseudo-class-defined-customized-builtins.html
diff --git a/tests/wpt/tests/custom-elements/custom-element-registry/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/custom-element-registry/WEB_FEATURES.yml
new file mode 100644
index 00000000000..c8486615c1e
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/custom-element-registry/WEB_FEATURES.yml
@@ -0,0 +1,9 @@
+features:
+- name: autonomous-custom-elements
+  files:
+  - define.html
+  - per-global.html
+  - upgrade.html
+- name: customized-built-in-elements
+  files:
+  - define-customized-builtins.html
diff --git a/tests/wpt/tests/custom-elements/htmlconstructor/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/htmlconstructor/WEB_FEATURES.yml
new file mode 100644
index 00000000000..6645507d4b3
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/htmlconstructor/WEB_FEATURES.yml
@@ -0,0 +1,7 @@
+features:
+- name: autonomous-custom-elements
+  files:
+  - newtarget.html
+- name: customized-built-in-elements
+  files:
+  - newtarget-customized-builtins.html
diff --git a/tests/wpt/tests/custom-elements/parser/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/parser/WEB_FEATURES.yml
new file mode 100644
index 00000000000..3f84f6e8406
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/parser/WEB_FEATURES.yml
@@ -0,0 +1,17 @@
+features:
+- name: autonomous-custom-elements
+  files:
+  - parser-constructs-custom-element-in-document-write.html
+  - parser-constructs-custom-element-synchronously.html
+  - parser-constructs-custom-elements-with-is.html
+  - parser-constructs-custom-elements.html
+  - parser-custom-element-in-foreign-content.html
+  - parser-fallsback-to-unknown-element.html
+  - parser-sets-attributes-and-children.html
+  - parser-uses-constructed-element.html
+  - parser-uses-registry-of-owner-document.html
+- name: customized-built-in-elements
+  files:
+  - serializing-html-fragments-customized-builtins.html
+# Note that parser-uses-create-an-element-for-a-token-svg.svg isn't listed
+# as it has one subtest for autonomous and one for customized built-ins.
diff --git a/tests/wpt/tests/custom-elements/reactions/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/reactions/WEB_FEATURES.yml
new file mode 100644
index 00000000000..fe4958dd49c
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/reactions/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: autonomous-custom-elements
+  files: "**"
diff --git a/tests/wpt/tests/custom-elements/reactions/customized-builtins/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/reactions/customized-builtins/WEB_FEATURES.yml
new file mode 100644
index 00000000000..2349d9ad429
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/reactions/customized-builtins/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: customized-built-in-elements
+  files: "**"
diff --git a/tests/wpt/tests/custom-elements/upgrading/WEB_FEATURES.yml b/tests/wpt/tests/custom-elements/upgrading/WEB_FEATURES.yml
new file mode 100644
index 00000000000..3c5cfdc2ea2
--- /dev/null
+++ b/tests/wpt/tests/custom-elements/upgrading/WEB_FEATURES.yml
@@ -0,0 +1,11 @@
+features:
+- name: autonomous-custom-elements
+  files:
+  - Document-importNode.html
+  - Node-cloneNode.html
+  - upgrading-enqueue-reactions.html
+  - upgrading-parser-created-element.html
+- name: customized-built-in-elements
+  files:
+  - Document-importNode-customized-builtins.html
+  - Node-cloneNode-customized-builtins.html
diff --git a/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-from-opener.https.html b/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-from-opener.https.html
new file mode 100644
index 00000000000..7d8b55be774
--- /dev/null
+++ b/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-from-opener.https.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Test that a user activation in window that owns a document picture-in-picture window is usable in the
+  document picture-in-picture window</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<body>
+<script>
+promise_test(async (t) => {
+  await test_driver.bless('request PiP window');
+  const pipWindow = await documentPictureInPicture.requestWindow();
+
+  assert_false(navigator.userActivation.isActive, 'the opener should initially not have user activation');
+  assert_false(pipWindow.navigator.userActivation.isActive, 'the PiP window should initially not have user activation');
+
+  // Activating this window should also activate the picture-in-picture window.
+  await test_driver.bless('activate opener window');
+  assert_true(navigator.userActivation.isActive, 'the opener should be activated when the PiP window is activated');
+  assert_true(pipWindow.navigator.userActivation.isActive, 'the PiP window should be activated');
+
+  // Consuming activation in the opener should also consume it in the picture-in-picture window.
+  window.open();
+  assert_false(navigator.userActivation.isActive, 'the opener should no longer be active once it consumes activation');
+  assert_false(pipWindow.navigator.userActivation.isActive, 'the PiP window should no longer be active once the opener consumes activation');
+});
+</script>
diff --git a/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-to-opener.https.html b/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-to-opener.https.html
new file mode 100644
index 00000000000..1f25328a0a9
--- /dev/null
+++ b/tests/wpt/tests/document-picture-in-picture/propagate-user-activation-to-opener.https.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<title>Test that a user activation in a document picture-in-picture window is usable in its opener window</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<body>
+<script>
+promise_test(async (t) => {
+  await test_driver.bless('request PiP window');
+  const pipWindow = await documentPictureInPicture.requestWindow();
+
+  assert_false(navigator.userActivation.isActive, 'the opener should initially not have user activation');
+  assert_false(pipWindow.navigator.userActivation.isActive, 'the PiP window should initially not have user activation');
+
+  // Activating the picture-in-picture window should also activate the opener.
+  await test_driver.bless('activate pip window', null, pipWindow);
+  assert_true(navigator.userActivation.isActive, 'the opener should be activated when the PiP window is activated');
+  assert_true(pipWindow.navigator.userActivation.isActive, 'the PiP window should be activated');
+
+  // Consuming activation in the picture-in-picture window should also consume it in the opener.
+  pipWindow.open();
+  assert_false(navigator.userActivation.isActive, 'the opener should no longer be active once the PiP window consumes activation');
+  assert_false(pipWindow.navigator.userActivation.isActive, 'the PiP window should no longer be active once it consumes activation');
+});
+</script>
diff --git a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative-ref.html b/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative-ref.html
deleted file mode 100644
index 78bca05b124..00000000000
--- a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative-ref.html
+++ /dev/null
@@ -1,30 +0,0 @@
-<!DOCTYPE html>
-<title>Test for no-font-display-late-swap document policy behavior</title>
-<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
-<style>
-.ahem {
-  font-family: 'Ahem';
-}
-.arial {
-  font-family: 'Arial';
-}
-</style>
-<p>Tests if font-display is set to optional for each option except for when it is set to fallback</p>
-<table id="container">
- <tr>
-  <th>not-set</th>
-  <th>auto</th>
-  <th>block</th>
-  <th>swap</th>
-  <th>fallback</th>
-  <th>optional</th>
- </tr>
- <tr>
-  <td class="arial">a</td>
-  <td class="arial">a</td>
-  <td class="arial">a</td>
-  <td class="arial">a</td>
-  <td class="ahem">a</td>
-  <td class="arial">a</td>
- </tr>
-</table>
diff --git a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html b/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html
deleted file mode 100644
index 26927bb8c66..00000000000
--- a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html
+++ /dev/null
@@ -1,46 +0,0 @@
-<!DOCTYPE html>
-<html class="reftest-wait">
-<title>Test for no-font-display-late-swap document policy behavior</title>
-<link rel="help" href="https://github.com/w3c/webappsec-feature-policy/blob/master/policies/font-display-late-swap.md">
-<link rel="match" href="override-to-optional.tentative-ref.html">
-<style>
-</style>
-<p>Tests if font-display is set to optional for each option except for when it is set to fallback</p>
-<table id="container">
- <tr>
-  <th>not-set</th>
-  <th>auto</th>
-  <th>block</th>
-  <th>swap</th>
-  <th>fallback</th>
-  <th>optional</th>
- </tr>
-</table>
-<script>
-const fontDisplayValues = ['', 'auto', 'block', 'swap', 'fallback', 'optional'];
-const table = document.getElementById('container');
-
-function makeFontFaceDeclaration(family, display) {
-    url = '/fonts/Ahem.ttf?pipe=trickle(d1)'; // Before the swap period is over
-    return '@font-face { font-family: ' + family + '; src: url("' + url + '"); font-display: ' + display + '; }';
-}
-
-window.onload = () => {
-    let tr = document.createElement('tr');
-    for (let display of fontDisplayValues) {
-        const family = display + '-face';
-        const rule = makeFontFaceDeclaration(family, display);
-        document.styleSheets[0].insertRule(rule, 0);
-        let td = document.createElement('td');
-        td.textContent = 'a';
-        td.style.fontFamily = family + ', Arial';
-        tr.appendChild(td);
-    }
-    table.appendChild(tr);
-    const timeoutMilliSec = 1500; // After the font is loaded
-    setTimeout(() => {
-        document.documentElement.classList.remove("reftest-wait");
-    }, timeoutMilliSec);
-}
-</script>
-</html>
diff --git a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html.headers
deleted file mode 100644
index 01b8bbccd44..00000000000
--- a/tests/wpt/tests/document-policy/font-display/override-to-optional.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html
deleted file mode 100644
index 9eea350de43..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'auto'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyReportOnlyGenerated('auto');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-auto.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html
deleted file mode 100644
index 628dbccb4dd..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value empty</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyReportOnlyGenerated('');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-blank.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html
deleted file mode 100644
index a3836953176..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'block'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyReportOnlyGenerated('block');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-block.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html
deleted file mode 100644
index a03015e47dd..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'fallback'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testCompliantWithFontDisplayPolicy('fallback');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-fallback.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html
deleted file mode 100644
index 2a4673f1533..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'optional'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testCompliantWithFontDisplayPolicy('optional');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-optional.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html b/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html
deleted file mode 100644
index ad1f437f8cc..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'swap'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyReportOnlyGenerated('swap');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html.headers
deleted file mode 100644
index 15091272777..00000000000
--- a/tests/wpt/tests/document-policy/font-display/report-only-swap.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy-Report-Only: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html
deleted file mode 100644
index 01857dd90e3..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'auto'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyViolationGenerated('auto');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-auto.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html
deleted file mode 100644
index 6521ae131ad..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value empty</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyViolationGenerated('');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-blank.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html
deleted file mode 100644
index 60403c67a4b..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'block'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyViolationGenerated('block');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-block.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html
deleted file mode 100644
index a03015e47dd..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'fallback'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testCompliantWithFontDisplayPolicy('fallback');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-fallback.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html
deleted file mode 100644
index 2a4673f1533..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'optional'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testCompliantWithFontDisplayPolicy('optional');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-optional.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html b/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html
deleted file mode 100644
index 53d823f178c..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<title>Test for font-display-late-swap document policy with font display value 'swap'</title>
-<link rel="help" href="https://github.com/w3c/webappsec-permissions-policy/blob/master/policies/font-display-late-swap.md">
-<script src='/resources/testharness.js'></script>
-<script src='/resources/testharnessreport.js'></script>
-<script src='resources/font-display-reporting-helper.js'></script>
-<script>
-  testFontDisplayPolicyViolationGenerated('swap');
-</script>
diff --git a/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html.headers b/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html.headers
deleted file mode 100644
index 273ca3564df..00000000000
--- a/tests/wpt/tests/document-policy/font-display/reporting-swap.tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: font-display-late-swap=?0
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/font-display/resources/font-display-reporting-helper.js b/tests/wpt/tests/document-policy/font-display/resources/font-display-reporting-helper.js
deleted file mode 100644
index f3c8a22b7ad..00000000000
--- a/tests/wpt/tests/document-policy/font-display/resources/font-display-reporting-helper.js
+++ /dev/null
@@ -1,81 +0,0 @@
-function check_report_format(report, expected_url, expected_disposition) {
-  assert_equals(report.type, 'document-policy-violation');
-  assert_equals(report.url, expected_url);
-  assert_equals(report.body.featureId, 'font-display-late-swap');
-  assert_equals(report.body.disposition, expected_disposition);
-  assert_true('sourceFile' in report.body);
-  assert_true('lineNumber' in report.body);
-  assert_true('columnNumber' in report.body);
-}
-
-function check_violation_report_format(report, expected_url) {
-  check_report_format(report, expected_url, 'enforce');
-}
-
-function check_report_only_report_format(report, expected_url) {
-  check_report_format(report, expected_url, 'report');
-}
-
-function makeFontFaceDeclaration(family, display) {
-  url = '/fonts/Ahem.ttf?pipe=trickle(d1)'; // Before the swap period is over
-  return `@font-face { font-family: ${family}; src: url("${url}"); font-display: ${display}; }`;
-}
-
-/**
- * Run font-display test with given parameters.
- *
- * A violation report is expected with fontDisplayValue set to
- * ['', 'auto', 'block', 'swap']
- *
- * No violation report is expected with fontDisplayValue set to
- * ['fallback', 'optional']
-
- * @param {String} fontDisplayValue
- * @param {(Report, String) => () | undefined} format_check pass a callback to
- * check report format if a violation report is expected. If no report is
- * expected to be generated, leave this argument undefined.
- */
-function runTest(fontDisplayValue, format_check) {
-  window.onload = () => {
-    const family = fontDisplayValue + '-face';
-    const rule = makeFontFaceDeclaration(family, fontDisplayValue);
-
-    const style = document.createElement('style');
-    style.innerHTML = rule;
-    document.body.appendChild(style);
-
-    const div = document.createElement('div');
-    div.textContent = 'a';
-    div.style.fontFamily = family + ', Arial';
-    document.body.appendChild(div);
-  };
-
-  const t = async_test('font-display-late-swap Report Format');
-
-  new ReportingObserver(
-    t.step_func_done((reports, _) => {
-      assert_equals(reports.length, 1);
-      assert_true(!!format_check);
-      format_check(reports[0], document.location.href);
-    }), {
-      types: ['document-policy-violation'],
-      buffered: true
-    }
-  ).observe();
-
-  t.step_timeout(t.step_func_done(() => {
-    assert_false(!!format_check, 'Expected violation report but did not get one.');
-  }), 400); // 400ms should be sufficient to observe the violation report.
-}
-
-function testFontDisplayPolicyViolationGenerated(fontDisplayValue) {
-  runTest(fontDisplayValue, check_violation_report_format);
-}
-
-function testFontDisplayPolicyReportOnlyGenerated(fontDisplayValue) {
-  runTest(fontDisplayValue, check_report_only_report_format);
-}
-
-function testCompliantWithFontDisplayPolicy(fontDisplayValue) {
-  runTest(fontDisplayValue);
-}
\ No newline at end of file
diff --git a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html b/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html
deleted file mode 100644
index 85e1349a19f..00000000000
--- a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html
+++ /dev/null
@@ -1,26 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <script src='/resources/testharness.js'></script>
-    <script src='/resources/testharnessreport.js'></script>
-  </head>
-  <body>
-    <script>
-var image = new Image();
-image.src = "./unoptimized-image.jpg";
-
-var check_report_format = (reports, observer) => {
-  let report = reports[0];
-  assert_equals(report.type, "document-policy-violation");
-  assert_equals(report.url, document.location.href);
-  assert_equals(report.body.featureId, "lossy-images-max-bpp");
-  assert_equals(report.body.disposition, "enforce");
-};
-
-async_test(t => {
-  new ReportingObserver(t.step_func_done(check_report_format),
-                        {types: ['document-policy-violation'], buffered: true}).observe();
-}, "unoptimized-images Report Format");
-    </script>
-  </body>
-</html>
diff --git a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html.headers b/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html.headers
deleted file mode 100644
index cb28d40ec15..00000000000
--- a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-onload-tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: lossy-images-max-bpp=0.5
diff --git a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html b/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html
deleted file mode 100644
index b6876f4880f..00000000000
--- a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html
+++ /dev/null
@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <script src='/resources/testharness.js'></script>
-    <script src='/resources/testharnessreport.js'></script>
-  </head>
-  <body>
-    <img src="./unoptimized-image.jpg">
-    <script>
-var check_report_format = (reports, observer) => {
-  let report = reports[0];
-  assert_equals(report.type, "document-policy-violation");
-  assert_equals(report.url, document.location.href);
-  assert_equals(report.body.featureId, "lossy-images-max-bpp");
-  assert_equals(report.body.disposition, "enforce");
-  assert_equals(report.body.sourceFile, document.getElementsByTagName('img')[0].src);
-  assert_equals(report.body.lineNumber, null);
-  assert_equals(report.body.columnNumber, null);
-};
-
-async_test(t => {
-  new ReportingObserver(t.step_func_done(check_report_format),
-                        {types: ['document-policy-violation'], buffered: true}).observe();
-}, "unoptimized-images Report Format");
-    </script>
-  </body>
-</html>
diff --git a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html.headers b/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html.headers
deleted file mode 100644
index cb28d40ec15..00000000000
--- a/tests/wpt/tests/document-policy/reporting/lossy-images-max-bpp-reporting-tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: lossy-images-max-bpp=0.5
diff --git a/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html b/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html
deleted file mode 100644
index bef7db27a7a..00000000000
--- a/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html
+++ /dev/null
@@ -1,32 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <script src='/resources/testharness.js'></script>
-        <script src='/resources/testharnessreport.js'></script>
-        <script src='../resources/document-policy-report-json.js'></script>
-    </head>
-    <body>
-        <img src="./oversized.jpg" alt="oversized image" width="50" height="50">
-    <script>
-        async_test(t => {
-            new ReportingObserver(
-                t.step_func_done((reports, _) => {
-                    assert_greater_than(reports.length, 0);
-                    const report = reports[0];
-                    assert_equals(report.type, "document-policy-violation");
-                    assert_equals(report.url, document.location.href);
-                    const rbody = report.body;
-                    assert_equals(rbody.featureId, "oversized-images");
-                    assert_equals(rbody.sourceFile, document.getElementsByTagName('img')[0].src);
-                    assert_equals(rbody.lineNumber, null);
-                    assert_equals(rbody.columnNumber, null);
-                    check_report_json(reports[0]);
-                }),
-                {types: ['document-policy-violation'], buffered: true}
-            ).observe();
-        },
-        "oversized-images Report Format")
-    </script>
-    </body>
-</html>
-
diff --git a/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html.headers b/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html.headers
deleted file mode 100644
index 10f5be1c334..00000000000
--- a/tests/wpt/tests/document-policy/reporting/oversized-images-reporting-tentative.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Document-Policy: oversized-images=2.0
diff --git a/tests/wpt/tests/document-policy/reporting/oversized.jpg b/tests/wpt/tests/document-policy/reporting/oversized.jpg
deleted file mode 100644
index 497ed770bfb6fb367f2eeb1978225bc4d036055b..0000000000000000000000000000000000000000
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diff --git a/tests/wpt/tests/dom/abort/WEB_FEATURES.yml b/tests/wpt/tests/dom/abort/WEB_FEATURES.yml
index 169de93ae9c..d2fdc1555e2 100644
--- a/tests/wpt/tests/dom/abort/WEB_FEATURES.yml
+++ b/tests/wpt/tests/dom/abort/WEB_FEATURES.yml
@@ -1,3 +1,6 @@
 features:
 - name: aborting
   files: "**"
+- name: abortsignal-any
+  files:
+  - abort-signal-any.any.js
diff --git a/tests/wpt/tests/dom/events/pointer-event-document-move.html b/tests/wpt/tests/dom/events/pointer-event-document-move.html
new file mode 100644
index 00000000000..91e7c368605
--- /dev/null
+++ b/tests/wpt/tests/dom/events/pointer-event-document-move.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/341104769">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+
+<template>
+  <p>TEST</p>
+</template>
+
+<body>
+<script>
+  const clone = document.querySelector("template").content.cloneNode(true);
+  const p = clone.querySelector("p");
+
+  let gotEvent = false;
+  p.addEventListener("pointerup", () => {
+    gotEvent = true;
+  });
+
+  document.body.append(clone);
+
+  promise_test(async () => {
+    await test_driver.click(document.querySelector("p"));
+    assert_true(gotEvent);
+  }, "Moving a node to new document should move the registered event listeners together");
+</script>
diff --git a/tests/wpt/tests/fenced-frame/ancestor-throttle.https.html b/tests/wpt/tests/fenced-frame/ancestor-throttle.https.html
index 9b6dfb0d305..56b1320135a 100644
--- a/tests/wpt/tests/fenced-frame/ancestor-throttle.https.html
+++ b/tests/wpt/tests/fenced-frame/ancestor-throttle.https.html
@@ -17,21 +17,24 @@ async function runTest(embed_url,
 
   // Generate the url for the top level fenced frame, including the information
   // needed to pass on to its nested iframe
-  const cross_origin = get_host_info().HTTPS_REMOTE_ORIGIN;
+  const origin = get_host_info().HTTPS_REMOTE_ORIGIN;
   let fenced_frame_url = generateURL(
       "resources/ancestor-throttle-inner.https.html",
-      [ancestor_key, embed_url, cross_origin_to_top_level_iframe]);
+      [ancestor_key, embed_url, cross_origin_to_top_level_iframe], true);
   if (cross_origin_to_top_level_fenced_frame)
     fenced_frame_url = getRemoteOriginURL(fenced_frame_url, true);
 
-  attachFencedFrame(fenced_frame_url);
+  const fenced_frame_config = await generateURNFromFledgeRawURL(
+      fenced_frame_url, [], true);
+
+  attachFencedFrame(fenced_frame_config);
 
   // There is no API to observe whether the document in the FencedFrame loaded
   // or not. Instead, set up a timeout. If the document loads, "loaded" will be
   // sent to the server. Otherwise "blocked" will be sent after 3 seconds.
   step_timeout(() => {
     writeValueToServer(ancestor_key, "blocked");
-  }, 3000);
+  }, 1000);
 
   // Get the result for the fenced frame's nested iframe.
   const fenced_frame_result = await nextValueFromServer(ancestor_key);
diff --git a/tests/wpt/tests/fenced-frame/csp-ancestors.https.sub.html b/tests/wpt/tests/fenced-frame/csp-ancestors.https.sub.html
new file mode 100644
index 00000000000..da6c73b9dbe
--- /dev/null
+++ b/tests/wpt/tests/fenced-frame/csp-ancestors.https.sub.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<title>Test Content-Security-Policy frame-ancestors</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/utils.js"></script>
+<script src="/common/dispatcher/dispatcher.js"></script>
+<script src="resources/utils.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<body>
+<script>
+promise_test(async (t) => {
+  // The fenced frame loads with a frame-ancestors policy set. The only way for
+  // the fenced frame to know that it can't load is if it checks its parent's
+  // policy across the fenced frame boundary.
+  const frame = await attachFencedFrameContext({
+    headers: [[
+      'Content-Security-Policy',
+      'frame-ancestors {{hosts[alt][www1]}}:{{ports[https][0]}}'
+    ]]
+  });
+  let timeout_promise =
+      new Promise(resolve => t.step_timeout(() => resolve('timeout'), 1000));
+  let execute_promise = frame.execute(() => {});
+  const result = await Promise.race([timeout_promise, execute_promise]);
+  assert_equals(result, 'timeout', 'The fenced frame should not load');
+}, 'Fenced frames check beyond fenced boundary for CSP frame-ancestors');
+
+promise_test(async () => {
+  // The Protected Audience fenced frame loads with a frame-ancestors policy
+  // set. It should be allowed to load even though the parent's origin isn't
+  // part of the policy.
+  const frame = await attachFencedFrameContext({
+    generator_api: 'fledge',
+    headers: [[
+      'Content-Security-Policy',
+      'frame-ancestors {{hosts[alt][www1]}}:{{ports[https][0]}}'
+    ]]
+  });
+  await frame.execute(() => {});
+}, 'Protected Audience fenced frames do not check beyond fenced boundary for ' +
+   'CSP frame-ancestors');
+</script>
+</body>
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-content-initiated.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-content-initiated.https.html
index 9c1d47d0508..bdd5d4c2610 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-content-initiated.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-content-initiated.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true,
     origin: get_host_info().HTTPS_ORIGIN
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested-urn-iframe.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested-urn-iframe.https.html
index 7d0544a5ad1..ea4a4c1fd82 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested-urn-iframe.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested-urn-iframe.https.html
@@ -24,7 +24,7 @@ promise_test(async(t) => {
   const fencedframe = await attachIFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested.https.html
index 4d1262f4b13..8b8070efed1 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-nested.https.html
@@ -24,7 +24,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-embedder-opt-in.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-embedder-opt-in.https.html
index d8fa5133cd1..954de240d93 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-embedder-opt-in.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-embedder-opt-in.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'false'
+      'Allow-Cross-Origin-Event-Reporting', '?0'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-subframe-opt-in.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-subframe-opt-in.https.html
index 2b054c1837c..ea5d0cdcc25 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-subframe-opt-in.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-no-subframe-opt-in.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-content-initiated.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-content-initiated.https.html
index 21c9ea1a431..e4971dcc97f 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-content-initiated.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-content-initiated.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const iframe = await attachIFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true,
     origin: get_host_info().HTTPS_ORIGIN
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-embedder-opt-in.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-embedder-opt-in.https.html
index 5d368fe7f1e..6f6835b3f59 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-embedder-opt-in.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-embedder-opt-in.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const iframe = await attachIFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'false'
+      'Allow-Cross-Origin-Event-Reporting', '?0'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-subframe-opt-in.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-subframe-opt-in.https.html
index df22749a9ea..855ad1f9cd0 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-subframe-opt-in.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe-no-subframe-opt-in.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const outer_iframe = await attachIFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe.https.html
index b37fec812d9..d62a46d5109 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin-urn-iframe.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const outer_iframe = await attachIFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin.https.html
index df7ae776ab0..f198ea409f7 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-cross-origin.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fenced-frame/fence-report-event-sub-fencedframe.https.html b/tests/wpt/tests/fenced-frame/fence-report-event-sub-fencedframe.https.html
index 0b3231ca924..558125d890b 100644
--- a/tests/wpt/tests/fenced-frame/fence-report-event-sub-fencedframe.https.html
+++ b/tests/wpt/tests/fenced-frame/fence-report-event-sub-fencedframe.https.html
@@ -14,7 +14,7 @@ promise_test(async(t) => {
   const fencedframe = await attachFencedFrameContext({
     generator_api: 'fledge',
     headers: [[
-      'Allow-Cross-Origin-Event-Reporting', 'true'
+      'Allow-Cross-Origin-Event-Reporting', '?1'
     ]],
     register_beacon: true
   });
diff --git a/tests/wpt/tests/fetch/api/response/response-blob-realm.any.js b/tests/wpt/tests/fetch/api/response/response-blob-realm.any.js
index 1be105416a0..1cc51fc71b6 100644
--- a/tests/wpt/tests/fetch/api/response/response-blob-realm.any.js
+++ b/tests/wpt/tests/fetch/api/response/response-blob-realm.any.js
@@ -1,3 +1,4 @@
+// META: global=window
 // META: title=realm of Response bytes()
 
 "use strict";
diff --git a/tests/wpt/tests/fetch/compression-dictionary/dictionary-decompression.tentative.https.html b/tests/wpt/tests/fetch/compression-dictionary/dictionary-decompression.tentative.https.html
index c7b3b7c3a5a..33aeb4466ba 100644
--- a/tests/wpt/tests/fetch/compression-dictionary/dictionary-decompression.tentative.https.html
+++ b/tests/wpt/tests/fetch/compression-dictionary/dictionary-decompression.tentative.https.html
@@ -20,7 +20,7 @@ compression_dictionary_promise_test(async (t) => {
 
   // Check if the data compressed using Brotli with the dictionary can be
   // decompressed.
-  const data_url = `${kCompressedDataPath}?content_encoding=br-d`;
+  const data_url = `${kCompressedDataPath}?content_encoding=dcb`;
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Decompresion using Brotli with the dictionary works as expected');
 
@@ -34,7 +34,7 @@ compression_dictionary_promise_test(async (t) => {
 
   // Check if the data compressed using Zstandard with the dictionary can be
   // decompressed.
-  const data_url = `${kCompressedDataPath}?content_encoding=zstd-d`;
+  const data_url = `${kCompressedDataPath}?content_encoding=dcz`;
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Decompresion using Zstandard with the dictionary works as expected');
 
@@ -50,7 +50,7 @@ compression_dictionary_promise_test(async (t) => {
   // Check if the data compressed using Brotli with the dictionary can be
   // decompressed.
   const data_url =
-      getRemoteHostUrl(`${kCompressedDataPath}?content_encoding=br-d`);
+      getRemoteHostUrl(`${kCompressedDataPath}?content_encoding=dcb`);
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Decompresion of a cross origin resource works as expected');
 
diff --git a/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html b/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html
index 23a271d4818..d465ceb3d85 100644
--- a/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html
+++ b/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-element.tentative.https.html
@@ -11,9 +11,9 @@
 <body>
 <script>
 
-function addLinkRelDictionaryElement(url, crossOrigin) {
+function addLinkRelCompressionDictionaryElement(url, crossOrigin) {
   const link = document.createElement('link');
-  link.rel = 'dictionary';
+  link.rel = 'compression-dictionary';
   link.href = url;
   if (crossOrigin) {
     link.crossOrigin = crossOrigin;
@@ -22,13 +22,14 @@ function addLinkRelDictionaryElement(url, crossOrigin) {
 }
 
 test(t => {
-    assert_true(document.createElement('link').relList.supports('dictionary'));
-  }, "Browser supports link element with dictionary rel.");
+    const link_element = document.createElement('link');
+    assert_true(link_element.relList.supports('compression-dictionary'));
+  }, "Browser supports link element with compression-dictionary rel.");
 
 compression_dictionary_promise_test(async (t) => {
   const dict_token = token();
   const url = `${kRegisterDictionaryPath}?save_header=${dict_token}`;
-  addLinkRelDictionaryElement(url);
+  addLinkRelCompressionDictionaryElement(url);
   // Wait for a while to ensure that the dictionary is fetched.
   await new Promise(resolve => window.requestIdleCallback(resolve));
   const headers = await waitUntilPreviousRequestHeaders(t, dict_token);
@@ -40,7 +41,7 @@ compression_dictionary_promise_test(async (t) => {
       kDefaultDictionaryHashBase64);
   // Check if the data compressed using Brotli with the dictionary can be
   // decompressed.
-  const data_url = `${kCompressedDataPath}?content_encoding=br-d`;
+  const data_url = `${kCompressedDataPath}?content_encoding=dcb`;
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Fetch same origin dictionary using link element');
 
@@ -48,7 +49,7 @@ compression_dictionary_promise_test(async (t) => {
   const dict_token = token();
   const url =
       getRemoteHostUrl(`${kRegisterDictionaryPath}?save_header=${dict_token}`);
-  addLinkRelDictionaryElement(url, 'anonymous');
+  addLinkRelCompressionDictionaryElement(url, 'anonymous');
   // Wait for a while to ensure that the dictionary is fetched.
   await new Promise(resolve => window.requestIdleCallback(resolve));
   const headers = await waitUntilPreviousRequestHeaders(
@@ -63,7 +64,7 @@ compression_dictionary_promise_test(async (t) => {
   // Check if the data compressed using Brotli with the dictionary can be
   // decompressed.
   const data_url =
-      getRemoteHostUrl(`${kCompressedDataPath}?content_encoding=br-d`);
+      getRemoteHostUrl(`${kCompressedDataPath}?content_encoding=dcb`);
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Fetch cross origin dictionary using link element');
 
diff --git a/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-header.tentative.https.html b/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-header.tentative.https.html
index 6f6a792ade6..007067d71ad 100644
--- a/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-header.tentative.https.html
+++ b/tests/wpt/tests/fetch/compression-dictionary/dictionary-fetch-with-link-header.tentative.https.html
@@ -11,11 +11,12 @@
 <body>
 <script>
 
-async function addIframeWithLinkRelDictionaryHeader(dict_url) {
+async function addIframeWithLinkRelCompressionDictionaryHeader(dict_url) {
   return new Promise((resolve) => {
     const base_page_url = './resources/empty.html';
     const page_url =
-        base_page_url + `?pipe=header(link,<${dict_url}>; rel="dictionary")`;
+        base_page_url +
+        `?pipe=header(link,<${dict_url}>; rel="compression-dictionary")`;
     const iframe = document.createElement('iframe');
     iframe.src = page_url;
     iframe.addEventListener('load', () => {
@@ -29,7 +30,8 @@ compression_dictionary_promise_test(async (t) => {
   const dict_token = token();
   const url = new URL(
       `${kRegisterDictionaryPath}?save_header=${dict_token}`, location.href);
-  const iframe = await addIframeWithLinkRelDictionaryHeader(url.href);
+  const iframe =
+      await addIframeWithLinkRelCompressionDictionaryHeader(url.href);
   t.add_cleanup(() => {
     iframe.remove();
   });
@@ -44,7 +46,7 @@ compression_dictionary_promise_test(async (t) => {
       kDefaultDictionaryHashBase64);
   // Check if the data compressed using Brotli with the dictionary can be
   // decompressed.
-  const data_url = `${kCompressedDataPath}?content_encoding=br-d`;
+  const data_url = `${kCompressedDataPath}?content_encoding=dcb`;
   assert_equals(await (await fetch(data_url)).text(), kExpectedCompressedData);
 }, 'Fetch same origin dictionary using link header');
 
diff --git a/tests/wpt/tests/fetch/compression-dictionary/resources/compressed-data.py b/tests/wpt/tests/fetch/compression-dictionary/resources/compressed-data.py
index 4be4b555640..bb9d7fe8466 100644
--- a/tests/wpt/tests/fetch/compression-dictionary/resources/compressed-data.py
+++ b/tests/wpt/tests/fetch/compression-dictionary/resources/compressed-data.py
@@ -1,28 +1,31 @@
 def main(request, response):
     response.headers.set(b"Access-Control-Allow-Origin", b"*")
     response.headers.set(b"Content-Type", b"text/plain")
-    response.headers.set(
-        b"Content-Dictionary",
-        b":U5abz16WDg7b8KS93msLPpOB4Vbef1uRzoORYkJw9BY=:")
 
-    # `br_d_data` and `zstd_d_data` are generated using the following commands:
+    # `dcb_data` and `dcz_data` are generated using the following commands:
     #
     # $ echo "This is a test dictionary." > /tmp/dict
     # $ echo -n "This is compressed test data using a test dictionary" \
     #    > /tmp/data
-    # $ brotli -o /tmp/out.brd -D /tmp/dict /tmp/data
-    # $ xxd -p /tmp/out.brd | tr -d '\n' | sed 's/\(..\)/\\x\1/g'
-    br_d_data = b"\xa1\x98\x01\x80\x62\xa4\x4c\x1d\xdf\x12\x84\x8c\xae\xc2\xca\x60\x22\x07\x6e\x81\x05\x14\xc9\xb7\xc3\x44\x8e\xbc\x16\xe0\x15\x0e\xec\xc1\xee\x34\x33\x3e\x0d"
-    # $ zstd -o /tmp/out.zstdd -D /tmp/dict /tmp/data
-    # $ xxd -p /tmp/out.zstdd | tr -d '\n' | sed 's/\(..\)/\\x\1/g'
-    zstd_d_data = b"\x28\xb5\x2f\xfd\x24\x34\xf5\x00\x00\x98\x63\x6f\x6d\x70\x72\x65\x73\x73\x65\x64\x61\x74\x61\x20\x75\x73\x69\x6e\x67\x03\x00\x59\xf9\x73\x54\x46\x27\x26\x10\x9e\x99\xf2\xbc"
+    #
+    # $ echo -en '\xffDCB' > /tmp/out.dcb
+    # $ openssl dgst -sha256 -binary /tmp/dict >> /tmp/out.dcb
+    # $ brotli --stdout -D /tmp/dict /tmp/data >> /tmp/out.dcb
+    # $ xxd -p /tmp/out.dcb | tr -d '\n' | sed 's/\(..\)/\\x\1/g'
+    dcb_data = b"\xff\x44\x43\x42\x53\x96\x9b\xcf\x5e\x96\x0e\x0e\xdb\xf0\xa4\xbd\xde\x6b\x0b\x3e\x93\x81\xe1\x56\xde\x7f\x5b\x91\xce\x83\x91\x62\x42\x70\xf4\x16\xa1\x98\x01\x80\x62\xa4\x4c\x1d\xdf\x12\x84\x8c\xae\xc2\xca\x60\x22\x07\x6e\x81\x05\x14\xc9\xb7\xc3\x44\x8e\xbc\x16\xe0\x15\x0e\xec\xc1\xee\x34\x33\x3e\x0d"
+    # $ echo -en '\x5e\x2a\x4d\x18\x20\x00\x00\x00' > /tmp/out.dcz
+    # $ openssl dgst -sha256 -binary /tmp/dict >> /tmp/out.dcz
+    # $ zstd -D /tmp/dict -f -o /tmp/tmp.zstd /tmp/data
+    # $ cat /tmp/tmp.zstd >> /tmp/out.dcz
+    # $ xxd -p /tmp/out.dcz | tr -d '\n' | sed 's/\(..\)/\\x\1/g'
+    dcz_data = b"\x5e\x2a\x4d\x18\x20\x00\x00\x00\x53\x96\x9b\xcf\x5e\x96\x0e\x0e\xdb\xf0\xa4\xbd\xde\x6b\x0b\x3e\x93\x81\xe1\x56\xde\x7f\x5b\x91\xce\x83\x91\x62\x42\x70\xf4\x16\x28\xb5\x2f\xfd\x24\x34\xf5\x00\x00\x98\x63\x6f\x6d\x70\x72\x65\x73\x73\x65\x64\x61\x74\x61\x20\x75\x73\x69\x6e\x67\x03\x00\x59\xf9\x73\x54\x46\x27\x26\x10\x9e\x99\xf2\xbc"
 
     if b'content_encoding' in request.GET:
         content_encoding = request.GET.first(b"content_encoding")
         response.headers.set(b"Content-Encoding", content_encoding)
-        if content_encoding == b"br-d":
+        if content_encoding == b"dcb":
             # Send the pre compressed file
-            response.content = br_d_data
-        if content_encoding == b"zstd-d":
+            response.content = dcb_data
+        if content_encoding == b"dcz":
             # Send the pre compressed file
-            response.content = zstd_d_data
+            response.content = dcz_data
diff --git a/tests/wpt/tests/fledge/tentative/auction-config.https.window.js b/tests/wpt/tests/fledge/tentative/auction-config.https.window.js
index b5f55149164..4efef29344d 100644
--- a/tests/wpt/tests/fledge/tentative/auction-config.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/auction-config.https.window.js
@@ -168,6 +168,60 @@ makeTest({
   auctionConfigOverrides: {deprecatedRenderURLReplacements: {'%%No_End_Percents': 'SSP'}}
 });
 
+makeTest({
+  name: 'sellerRealTimeReportingConfig has default local reporting type',
+  expect:  EXPECT_WINNER,
+  auctionConfigOverrides: {sellerRealTimeReportingConfig:
+                            {type: 'default-local-reporting'}}
+});
+
+makeTest({
+  name: 'sellerRealTimeReportingConfig has no type',
+  expect: EXPECT_EXCEPTION(TypeError),
+  auctionConfigOverrides: {sellerRealTimeReportingConfig:
+                            {notType: 'default-local-reporting'}}
+});
+
+makeTest({
+  name: 'sellerRealTimeReportingConfig has unknown type',
+  expect:  EXPECT_WINNER,
+  auctionConfigOverrides: {sellerRealTimeReportingConfig: {type: 'unknown type'}}
+});
+
+makeTest({
+  name: 'perBuyerRealTimeReportingConfig',
+  expect: EXPECT_WINNER,
+  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
+                            {'https://example.com': {type: 'default-local-reporting'}}}
+});
+
+makeTest({
+  name: 'perBuyerRealTimeReportingConfig has invalid buyer',
+  expect: EXPECT_EXCEPTION(TypeError),
+  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
+                            {'http://example.com': {type: 'default-local-reporting'}}}
+});
+
+makeTest({
+  name: 'perBuyerRealTimeReportingConfig has no type',
+  expect: EXPECT_EXCEPTION(TypeError),
+  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
+                            {'https://example.com': {notType: 'default-local-reporting'}}}
+});
+
+makeTest({
+  name: 'perBuyerRealTimeReportingConfig has unknown type',
+  expect: EXPECT_WINNER,
+  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
+                            {'https://example.com': {type: 'unknown type'}}}
+});
+
+makeTest({
+  name: 'perBuyerRealTimeReportingConfig has no entry',
+  expect: EXPECT_WINNER,
+  auctionConfigOverrides: {perBuyerRealTimeReportingConfig: {}}
+});
+
 makeTest({
   name: 'no buyers => no winners',
   expect: EXPECT_NO_WINNER,
@@ -507,60 +561,6 @@ makeTest({
                              {width: '200furlongs', height: '200'}]}
 });
 
-makeTest({
-  name: 'sellerRealTimeReportingConfig has default local reporting type',
-  expect:  EXPECT_WINNER,
-  auctionConfigOverrides: {sellerRealTimeReportingConfig:
-                            {type: 'default-local-reporting'}}
-});
-
-makeTest({
-  name: 'sellerRealTimeReportingConfig has no type',
-  expect: EXPECT_EXCEPTION(TypeError),
-  auctionConfigOverrides: {sellerRealTimeReportingConfig:
-                            {notType: 'default-local-reporting'}}
-});
-
-makeTest({
-  name: 'sellerRealTimeReportingConfig has unknown type',
-  expect:  EXPECT_WINNER,
-  auctionConfigOverrides: {sellerRealTimeReportingConfig: {type: 'unknown type'}}
-});
-
-makeTest({
-  name: 'perBuyerRealTimeReportingConfig',
-  expect: EXPECT_WINNER,
-  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
-                            {"https://example.com": {type: 'default-local-reporting'}}}
-});
-
-makeTest({
-  name: 'perBuyerRealTimeReportingConfig has no entry',
-  expect: EXPECT_WINNER,
-  auctionConfigOverrides: {perBuyerRealTimeReportingConfig: {}}
-});
-
-makeTest({
-  name: 'perBuyerRealTimeReportingConfig has invalid buyer',
-  expect: EXPECT_EXCEPTION(TypeError),
-  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
-                            {"http://example.com": {type: 'default-local-reporting'}}}
-});
-
-makeTest({
-  name: 'perBuyerRealTimeReportingConfig has no type',
-  expect: EXPECT_EXCEPTION(TypeError),
-  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
-                            {"https://example.com": {notType: 'default-local-reporting'}}}
-});
-
-makeTest({
-  name: 'perBuyerRealTimeReportingConfig has unknown type',
-  expect: EXPECT_WINNER,
-  auctionConfigOverrides: {perBuyerRealTimeReportingConfig:
-                            {"https://example.com": {type: 'unknown type'}}}
-});
-
 subsetTest(promise_test, async test => {
   const uuid = generateUuid(test);
 
diff --git a/tests/wpt/tests/sanitizer-api/WEB_FEATURES.yml b/tests/wpt/tests/html/canvas/element/reset/WEB_FEATURES.yml
similarity index 53%
rename from tests/wpt/tests/sanitizer-api/WEB_FEATURES.yml
rename to tests/wpt/tests/html/canvas/element/reset/WEB_FEATURES.yml
index 428aeee63a2..0787db18f81 100644
--- a/tests/wpt/tests/sanitizer-api/WEB_FEATURES.yml
+++ b/tests/wpt/tests/html/canvas/element/reset/WEB_FEATURES.yml
@@ -1,3 +1,3 @@
 features:
-- name: sanitizer
+- name: canvas-reset
   files: "**"
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
index d66e23d8b49..6c634b93190 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
@@ -40,17 +40,17 @@ _addTest(function(canvas, ctx) {
     for (const baseline of kBaselines) {
       const tm = ctx.measureText(text);
       // First character.
-      for (const r of tm.getSelectionRects(0, 0)) {
+      for (const r of tm.getSelectionRects(0, 1)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Last character.
-      for (const r of tm.getSelectionRects(text.length - 1, text.length - 1)) {
+      for (const r of tm.getSelectionRects(text.length - 1, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Whole string.
-      for (const r of tm.getSelectionRects(0, text.length - 1)) {
+      for (const r of tm.getSelectionRects(0, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
@@ -60,7 +60,11 @@ _addTest(function(canvas, ctx) {
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Invalid start > end string. Creates 0 width rectangle.
-      for (const r of tm.getSelectionRects(2, 1)) {
+      for (const r of tm.getSelectionRects(3, 2)) {
+        assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
+        assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
+      }
+      for (const r of tm.getSelectionRects(1, 0)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
index f5b4cd75aed..dd213d3e83b 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
@@ -33,11 +33,11 @@ _addTest(function(canvas, ctx) {
     assert_throws_js(TypeError, () => tm.getSelectionRects(-1, -1) );
     // Thrown in TextMetrics.
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, 0) );
+                      () => tm.getSelectionRects(text.length + 1, 0) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(0, text.length) );
+                      () => tm.getSelectionRects(0, text.length + 1) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, text.length) );
+                      () => tm.getSelectionRects(text.length + 1, text.length + 1) );
   }
 
 });
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
index 7d31b59bb62..e724586f083 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
@@ -32,7 +32,7 @@ _addTest(function(canvas, ctx) {
     const parent = range.getClientRects()[0];
 
     range.setStart(el.childNodes[0], from);
-    range.setEnd(el.childNodes[0], to+1);
+    range.setEnd(el.childNodes[0], to);
 
     let sel = window.getSelection();
     sel.removeAllRanges();
@@ -73,28 +73,32 @@ _addTest(function(canvas, ctx) {
     const tm = ctx.measureText(text);
     // First character.
     checkRectListsMatch(
-      tm.getSelectionRects(0, 0),
-      placeAndSelectTextInDOM(text, 0, 0)
+      tm.getSelectionRects(0, 1),
+      placeAndSelectTextInDOM(text, 0, 1)
     );
     // Last character.
     checkRectListsMatch(
-      tm.getSelectionRects(text.length - 1, text.length - 1),
-      placeAndSelectTextInDOM(text, text.length - 1, text.length - 1)
+      tm.getSelectionRects(text.length - 1, text.length),
+      placeAndSelectTextInDOM(text, text.length - 1, text.length)
     );
     // Whole string.
     checkRectListsMatch(
-      tm.getSelectionRects(0, text.length - 1),
-      placeAndSelectTextInDOM(text, 0, text.length - 1)
+      tm.getSelectionRects(0, text.length),
+      placeAndSelectTextInDOM(text, 0, text.length)
     );
     // Intermediate string.
     checkRectListsMatch(
-      tm.getSelectionRects(1, text.length - 2),
-      placeAndSelectTextInDOM(text, 1, text.length - 2)
+      tm.getSelectionRects(1, text.length - 1),
+      placeAndSelectTextInDOM(text, 1, text.length - 1)
     );
     // Invalid start > end string. Creates 0 width rectangle.
     checkRectListsMatch(
-      tm.getSelectionRects(2, 1),
-      placeAndSelectTextInDOM(text, 2, 1)
+      tm.getSelectionRects(3, 2),
+      placeAndSelectTextInDOM(text, 3, 2)
+    );
+    checkRectListsMatch(
+      tm.getSelectionRects(1, 0),
+      placeAndSelectTextInDOM(text, 1, 0)
     );
   }
 
diff --git a/tests/wpt/tests/html/canvas/offscreen/reset/WEB_FEATURES.yml b/tests/wpt/tests/html/canvas/offscreen/reset/WEB_FEATURES.yml
new file mode 100644
index 00000000000..0787db18f81
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/reset/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: canvas-reset
+  files: "**"
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
index 9460d32bcce..818a63ef65f 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
@@ -41,17 +41,17 @@ t.step(function() {
     for (const baseline of kBaselines) {
       const tm = ctx.measureText(text);
       // First character.
-      for (const r of tm.getSelectionRects(0, 0)) {
+      for (const r of tm.getSelectionRects(0, 1)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Last character.
-      for (const r of tm.getSelectionRects(text.length - 1, text.length - 1)) {
+      for (const r of tm.getSelectionRects(text.length - 1, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Whole string.
-      for (const r of tm.getSelectionRects(0, text.length - 1)) {
+      for (const r of tm.getSelectionRects(0, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
@@ -61,7 +61,11 @@ t.step(function() {
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Invalid start > end string. Creates 0 width rectangle.
-      for (const r of tm.getSelectionRects(2, 1)) {
+      for (const r of tm.getSelectionRects(3, 2)) {
+        assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
+        assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
+      }
+      for (const r of tm.getSelectionRects(1, 0)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
index c1e8c9c3035..56a8d2799a0 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
@@ -37,17 +37,17 @@ t.step(function() {
     for (const baseline of kBaselines) {
       const tm = ctx.measureText(text);
       // First character.
-      for (const r of tm.getSelectionRects(0, 0)) {
+      for (const r of tm.getSelectionRects(0, 1)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Last character.
-      for (const r of tm.getSelectionRects(text.length - 1, text.length - 1)) {
+      for (const r of tm.getSelectionRects(text.length - 1, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Whole string.
-      for (const r of tm.getSelectionRects(0, text.length - 1)) {
+      for (const r of tm.getSelectionRects(0, text.length)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
@@ -57,7 +57,11 @@ t.step(function() {
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
       // Invalid start > end string. Creates 0 width rectangle.
-      for (const r of tm.getSelectionRects(2, 1)) {
+      for (const r of tm.getSelectionRects(3, 2)) {
+        assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
+        assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
+      }
+      for (const r of tm.getSelectionRects(1, 0)) {
         assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
         assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
       }
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
index ef2d2aa7bc5..06ffeacd037 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
@@ -34,11 +34,11 @@ t.step(function() {
     assert_throws_js(TypeError, () => tm.getSelectionRects(-1, -1) );
     // Thrown in TextMetrics.
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, 0) );
+                      () => tm.getSelectionRects(text.length + 1, 0) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(0, text.length) );
+                      () => tm.getSelectionRects(0, text.length + 1) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, text.length) );
+                      () => tm.getSelectionRects(text.length + 1, text.length + 1) );
   }
   t.done();
 
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
index 4102c4a6ebe..1ec8bc49731 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
@@ -30,11 +30,11 @@ t.step(function() {
     assert_throws_js(TypeError, () => tm.getSelectionRects(-1, -1) );
     // Thrown in TextMetrics.
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, 0) );
+                      () => tm.getSelectionRects(text.length + 1, 0) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(0, text.length) );
+                      () => tm.getSelectionRects(0, text.length + 1) );
     assert_throws_dom("IndexSizeError",
-                      () => tm.getSelectionRects(text.length, text.length) );
+                      () => tm.getSelectionRects(text.length + 1, text.length + 1) );
   }
   t.done();
 });
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
index 32a758e991e..e8574850fac 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
@@ -33,7 +33,7 @@ t.step(function() {
     const parent = range.getClientRects()[0];
 
     range.setStart(el.childNodes[0], from);
-    range.setEnd(el.childNodes[0], to+1);
+    range.setEnd(el.childNodes[0], to);
 
     let sel = window.getSelection();
     sel.removeAllRanges();
@@ -74,28 +74,32 @@ t.step(function() {
     const tm = ctx.measureText(text);
     // First character.
     checkRectListsMatch(
-      tm.getSelectionRects(0, 0),
-      placeAndSelectTextInDOM(text, 0, 0)
+      tm.getSelectionRects(0, 1),
+      placeAndSelectTextInDOM(text, 0, 1)
     );
     // Last character.
     checkRectListsMatch(
-      tm.getSelectionRects(text.length - 1, text.length - 1),
-      placeAndSelectTextInDOM(text, text.length - 1, text.length - 1)
+      tm.getSelectionRects(text.length - 1, text.length),
+      placeAndSelectTextInDOM(text, text.length - 1, text.length)
     );
     // Whole string.
     checkRectListsMatch(
-      tm.getSelectionRects(0, text.length - 1),
-      placeAndSelectTextInDOM(text, 0, text.length - 1)
+      tm.getSelectionRects(0, text.length),
+      placeAndSelectTextInDOM(text, 0, text.length)
     );
     // Intermediate string.
     checkRectListsMatch(
-      tm.getSelectionRects(1, text.length - 2),
-      placeAndSelectTextInDOM(text, 1, text.length - 2)
+      tm.getSelectionRects(1, text.length - 1),
+      placeAndSelectTextInDOM(text, 1, text.length - 1)
     );
     // Invalid start > end string. Creates 0 width rectangle.
     checkRectListsMatch(
-      tm.getSelectionRects(2, 1),
-      placeAndSelectTextInDOM(text, 2, 1)
+      tm.getSelectionRects(3, 2),
+      placeAndSelectTextInDOM(text, 3, 2)
+    );
+    checkRectListsMatch(
+      tm.getSelectionRects(1, 0),
+      placeAndSelectTextInDOM(text, 1, 0)
     );
   }
   t.done();
diff --git a/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml b/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
index 53680704f0e..4aa1a55f8e2 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
@@ -1199,7 +1199,7 @@
       const parent = range.getClientRects()[0];
 
       range.setStart(el.childNodes[0], from);
-      range.setEnd(el.childNodes[0], to+1);
+      range.setEnd(el.childNodes[0], to);
 
       let sel = window.getSelection();
       sel.removeAllRanges();
@@ -1240,28 +1240,32 @@
       const tm = ctx.measureText(text);
       // First character.
       checkRectListsMatch(
-        tm.getSelectionRects(0, 0),
-        placeAndSelectTextInDOM(text, 0, 0)
+        tm.getSelectionRects(0, 1),
+        placeAndSelectTextInDOM(text, 0, 1)
       );
       // Last character.
       checkRectListsMatch(
-        tm.getSelectionRects(text.length - 1, text.length - 1),
-        placeAndSelectTextInDOM(text, text.length - 1, text.length - 1)
+        tm.getSelectionRects(text.length - 1, text.length),
+        placeAndSelectTextInDOM(text, text.length - 1, text.length)
       );
       // Whole string.
       checkRectListsMatch(
-        tm.getSelectionRects(0, text.length - 1),
-        placeAndSelectTextInDOM(text, 0, text.length - 1)
+        tm.getSelectionRects(0, text.length),
+        placeAndSelectTextInDOM(text, 0, text.length)
       );
       // Intermediate string.
       checkRectListsMatch(
-        tm.getSelectionRects(1, text.length - 2),
-        placeAndSelectTextInDOM(text, 1, text.length - 2)
+        tm.getSelectionRects(1, text.length - 1),
+        placeAndSelectTextInDOM(text, 1, text.length - 1)
       );
       // Invalid start > end string. Creates 0 width rectangle.
       checkRectListsMatch(
-        tm.getSelectionRects(2, 1),
-        placeAndSelectTextInDOM(text, 2, 1)
+        tm.getSelectionRects(3, 2),
+        placeAndSelectTextInDOM(text, 3, 2)
+      );
+      checkRectListsMatch(
+        tm.getSelectionRects(1, 0),
+        placeAndSelectTextInDOM(text, 1, 0)
       );
     }
 
@@ -1291,17 +1295,17 @@
       for (const baseline of kBaselines) {
         const tm = ctx.measureText(text);
         // First character.
-        for (const r of tm.getSelectionRects(0, 0)) {
+        for (const r of tm.getSelectionRects(0, 1)) {
           assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
           assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
         }
         // Last character.
-        for (const r of tm.getSelectionRects(text.length - 1, text.length - 1)) {
+        for (const r of tm.getSelectionRects(text.length - 1, text.length)) {
           assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
           assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
         }
         // Whole string.
-        for (const r of tm.getSelectionRects(0, text.length - 1)) {
+        for (const r of tm.getSelectionRects(0, text.length)) {
           assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
           assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
         }
@@ -1311,7 +1315,11 @@
           assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
         }
         // Invalid start > end string. Creates 0 width rectangle.
-        for (const r of tm.getSelectionRects(2, 1)) {
+        for (const r of tm.getSelectionRects(3, 2)) {
+          assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
+          assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
+        }
+        for (const r of tm.getSelectionRects(1, 0)) {
           assert_approx_equals(r.top, -tm.fontBoundingBoxAscent, 1.0);
           assert_approx_equals(r.bottom, tm.fontBoundingBoxDescent, 1.0);
         }
@@ -1337,11 +1345,11 @@
       assert_throws_js(TypeError, () => tm.getSelectionRects(-1, -1) );
       // Thrown in TextMetrics.
       assert_throws_dom("IndexSizeError",
-                        () => tm.getSelectionRects(text.length, 0) );
+                        () => tm.getSelectionRects(text.length + 1, 0) );
       assert_throws_dom("IndexSizeError",
-                        () => tm.getSelectionRects(0, text.length) );
+                        () => tm.getSelectionRects(0, text.length + 1) );
       assert_throws_dom("IndexSizeError",
-                        () => tm.getSelectionRects(text.length, text.length) );
+                        () => tm.getSelectionRects(text.length + 1, text.length + 1) );
     }
 
 - name: 2d.text.drawing.style.absolute.spacing
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/ascends-to-parent-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/ascends-to-parent-focusgroup.html
index 00ef3db90c5..e77fc866411 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/ascends-to-parent-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/ascends-to-parent-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus ascends to parent focusgroup successfully.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,11 +10,11 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup=horizontal>
+<div focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1>
     <div>
-      <div focusgroup="extend vertical">
+      <div focusgroup="extend block">
         <span id=item3 tabindex=-1>item3</span>
         <span id=item4 tabindex=-1>item4</span>
       </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-ascend-out-of-non-extending-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-ascend-out-of-non-extending-focusgroup.html
index b00958719d5..f30e40783f9 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-ascend-out-of-non-extending-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-ascend-out-of-non-extending-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not ascend out of current focusgroup if it does not extend the parent focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,9 +10,9 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<ul focusgroup=horizontal>
+<ul focusgroup=inline>
   <li id=item1 tabindex="-1">
-    <ul focusgroup=vertical>
+    <ul focusgroup=block>
       <li id=item2 tabindex="-1">item2</li>
     </ul>
   </li>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-move-when-axis-not-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-move-when-axis-not-supported.html
index e671a258443..2b116c70125 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-move-when-axis-not-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-move-when-axis-not-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not move to previous focusgroup item when the axis of the arrow key pressed isn't supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=vertical>
+<div id=root focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-wrap-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-wrap-in-orthogonal-axis.html
index de09fa813c6..2c95bc24841 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-wrap-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/does-not-wrap-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not wrap in the arrow key pressed orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup="vertical wrap">
+<div focusgroup="block wrap">
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/moves-when-only-current-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/moves-when-only-current-axis-supported.html
index 12f79348669..a61aabe949b 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/moves-when-only-current-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/moves-when-only-current-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous focusgroup item when only the axis of the arrow key pressed is supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=horizontal>
+<div id=root focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
index 2fadddac272..917c8cce0d3 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous item, skipping the focusgroup that extends in the orthogonal axis (complex case).</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -13,7 +13,7 @@
 <div focusgroup=wrap>
   <span id=item1 tabindex=0>item1</span>
   <div>
-    <div focusgroup="extend vertical">
+    <div focusgroup="extend block">
       <div id=item2 tabindex=-1>
         <div focusgroup=extend>
           <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
index 44dace84614..8c6c7b2a3ef 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous item, skipping the focusgroup that extends in the orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -13,7 +13,7 @@
 <div focusgroup=wrap>
   <span id=item1 tabindex=0>item1</span>
   <div>
-    <div focusgroup="extending vertical">
+    <div focusgroup="extend block">
       <span id=item2 tabindex=-1>item2</span>
       <span id=item3 tabindex=-1>item3</span>
     </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/wraps-in-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/wraps-in-axis.html
index 956d3f64063..5be26b93a1a 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/wraps-in-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/horizontal/wraps-in-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the arrow key pressed axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup="horizontal wrap">
+<div focusgroup="inline wrap">
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/ascends-to-parent-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/ascends-to-parent-focusgroup.html
index b95f2c527bc..2f9e3016237 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/ascends-to-parent-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/ascends-to-parent-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus ascends to parent focusgroup successfully.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,11 +10,11 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup=vertical>
+<div focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1>
     <div>
-      <div focusgroup="extend horizontal">
+      <div focusgroup="extend inline">
         <span id=item3 tabindex=-1>item3</span>
         <span id=item4 tabindex=-1>item4</span>
       </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-ascend-out-of-non-extending-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-ascend-out-of-non-extending-focusgroup.html
index 08dc4666033..407db648fac 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-ascend-out-of-non-extending-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-ascend-out-of-non-extending-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not ascend out of current focusgroup if it does not extend the parent focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,9 +10,9 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<ul focusgroup=vertical>
+<ul focusgroup=block>
   <li id=item1 tabindex="-1">
-    <ul focusgroup=horizontal>
+    <ul focusgroup=inline>
       <li id=item2 tabindex="-1">item2</li>
     </ul>
   </li>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-move-when-axis-not-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-move-when-axis-not-supported.html
index 0cf6ad3be23..c9a6ec5ddee 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-move-when-axis-not-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-move-when-axis-not-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not move to previous focusgroup item when the axis of the arrow key pressed isn't supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=horizontal>
+<div id=root focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-wrap-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-wrap-in-orthogonal-axis.html
index 0ec4f022476..9bb5cc1c885 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-wrap-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/does-not-wrap-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not wrap in the arrow key pressed orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup="horizontal wrap">
+<div focusgroup="inline wrap">
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/moves-when-only-current-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/moves-when-only-current-axis-supported.html
index ad46be76b29..efe3b458f59 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/moves-when-only-current-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/moves-when-only-current-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous focusgroup item when only the axis of the arrow key pressed is supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=vertical>
+<div id=root focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
index 86ea79122cf..5b66b5b00ea 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis-complex-case.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous item, skipping the focusgroup that extends in the orthogonal axis (complex case).</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -13,7 +13,7 @@
 <div focusgroup=wrap>
   <span id=item1 tabindex=0>item1</span>
   <div>
-    <div focusgroup="extend horizontal">
+    <div focusgroup="extend inline">
       <div id=item2 tabindex=-1>
         <div focusgroup=extend>
           <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
index 960b8604b0d..b4ff4fab564 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to previous item, skipping the focusgroup that extends in the orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -13,7 +13,7 @@
 <div focusgroup=wrap>
   <span id=item1 tabindex=0>item1</span>
   <div>
-    <div focusgroup="extending horizontal">
+    <div focusgroup="extend inline">
       <span id=item2 tabindex=-1>item2</span>
       <span id=item3 tabindex=-1>item3</span>
     </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/wraps-in-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/wraps-in-axis.html
index fdccee9742f..afded473117 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/wraps-in-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/backward-navigation/vertical/wraps-in-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the arrow key pressed axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup="vertical wrap">
+<div focusgroup="block wrap">
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/descends-in-horizontal-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/descends-in-horizontal-inner-focusgroup.html
index 3d0d7f0fa5d..f46d07f41d5 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/descends-in-horizontal-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/descends-in-horizontal-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus descends from vertical focusgroup into horizontal focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,9 +10,9 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=fg1 focusgroup=vertical>
+<div id=fg1 focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
-  <div id=fg2 tabindex=-1 focusgroup="extend horizontal">
+  <div id=fg2 tabindex=-1 focusgroup="extend inline">
     <span id=item2 tabindex=-1>item2</span>
   </div>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-move-when-axis-not-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-move-when-axis-not-supported.html
index ebf7238c543..dd2442f4a6b 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-move-when-axis-not-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-move-when-axis-not-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not move to next focusgroup item when the axis of the arrow key pressed isn't supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=vertical>
+<div id=root focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-wrap-even-when-other-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-wrap-even-when-other-axis-supported.html
index 19535e1df92..a9e8deeba01 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-wrap-even-when-other-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/does-not-wrap-even-when-other-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Does not wrap when the arrow keypress is supported but the focusgroup only wraps in the other axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup="vertical wrap">
+<div id=root focusgroup="block wrap">
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1 focusgroup=extend>
     <!--This focusgroup supports both axes, but only wraps in the vertical one.-->
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/moves-when-only-current-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/moves-when-only-current-axis-supported.html
index 9ae9892c1da..3757c831a79 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/moves-when-only-current-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/moves-when-only-current-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to next focusgroup item when only the axis of the arrow key pressed is supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=horizontal>
+<div id=root focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
index 05f82688958..ef3611e7237 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/skips-focusgroup-that-extends-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to next item, skipping the focusgroup that extends in the orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -11,7 +11,7 @@
 <script src="../../resources/focusgroup-utils.js"></script>
 
 <div id=root focusgroup>
-  <div id=item1 tabindex=0 focusgroup="extend vertical">
+  <div id=item1 tabindex=0 focusgroup="extend block">
     <span id=item2 tabindex=-1>item2</span>
   </div>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-and-skips-orthogonal-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-and-skips-orthogonal-inner-focusgroup.html
index af79ca24c62..c17253a8623 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-and-skips-orthogonal-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-and-skips-orthogonal-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps and skips the orthogonal inner focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -11,7 +11,7 @@
 <script src="../../resources/focusgroup-utils.js"></script>
 
 <div id=root focusgroup=wrap>
-  <div focusgroup="extend vertical">
+  <div focusgroup="extend block">
     <span id=item1 tabindex=-1>item1</span>
     <span id=item2 tabindex=-1>item2</span>
   </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-appropriate-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-appropriate-focusgroup.html
index 80290c99185..3ff2a1f5335 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-appropriate-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-appropriate-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the appropriate focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,12 +10,12 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup=wrap> <!--Supports horizontal wrapping-->
-  <div focusgroup="extend vertical"> <!--Doesn't support horizontal wrapping-->
+<div focusgroup=wrap> <!--Supports inline wrapping-->
+  <div focusgroup="extend block"> <!--Doesn't support inline wrapping-->
     <span id=item1 tabindex=0>item1</span>
     <div id=item2 tabindex=-1 focusgroup="extend wrap">
       <!--Supports wrapping in both axis, but only extend the
-          wrapping behavior of its ancestors in the vertical axis. -->
+          wrapping behavior of its ancestors in the block axis. -->
       <span id=item3 tabindex=-1>item3</span>
       <span id=item4 tabindex=-1>item4</span>
     </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-inner-focusgroup.html
index ab33842340b..8a8a4c8c22b 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/horizontal/wraps-in-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the inner focusgroup only since the outer focusgroup only wraps in the other axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,11 +10,11 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup="vertical wrap">
+<div id=root focusgroup="block wrap">
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1 focusgroup="extend wrap">
     <!--This focusgroup supports wrapping in both axis, but only extend the wrapping
-        behavior of its parent in the vertical axis. -->
+        behavior of its parent in the block axis. -->
     <span id=item3 tabindex=-1>item3</span>
     <span id=item4 tabindex=-1>item4</span>
   </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/descends-in-vertical-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/descends-in-vertical-inner-focusgroup.html
index 4f6f8e94597..9c1e68b5a38 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/descends-in-vertical-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/descends-in-vertical-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus descends from horizontal focusgroup into vertical focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,9 +10,9 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=fg1 focusgroup=horizontal>
+<div id=fg1 focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
-  <div id=fg2 tabindex=-1 focusgroup="extend vertical">
+  <div id=fg2 tabindex=-1 focusgroup="extend block">
     <span id=item2 tabindex=-1>item2</span>
   </div>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-move-when-axis-not-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-move-when-axis-not-supported.html
index 794f079418d..bd20319a8c3 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-move-when-axis-not-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-move-when-axis-not-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus does not move to next focusgroup item when the axis of the arrow key pressed isn't supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=horizontal>
+<div id=root focusgroup=inline>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-wrap-even-when-other-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-wrap-even-when-other-axis-supported.html
index f7b697e5c02..0b2028548a9 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-wrap-even-when-other-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/does-not-wrap-even-when-other-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Does not wrap when the arrow keypress is supported but the focusgroup only wraps in the other axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,10 +10,10 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup="horizontal wrap">
+<div id=root focusgroup="inline wrap">
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1 focusgroup=extend>
-    <!--This focusgroup supports both axes, but only wraps in the horizontal one.-->
+    <!--This focusgroup supports both axes, but only wraps in the inline one.-->
     <span id=item3 tabindex=-1>item3</span>
     <span id=item4 tabindex=-1>item4</span>
   </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/moves-when-only-current-axis-supported.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/moves-when-only-current-axis-supported.html
index b5b97cca674..d5eb894de3f 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/moves-when-only-current-axis-supported.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/moves-when-only-current-axis-supported.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to next focusgroup item when only the axis of the arrow key pressed is supported.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,7 +10,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup=vertical>
+<div id=root focusgroup=block>
   <span id=item1 tabindex=0>item1</span>
   <span id=item2 tabindex=-1>item2</span>
 </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
index 4fe753126bf..419ee8dc47c 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/skips-focusgroup-that-extends-in-orthogonal-axis.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus moves to next item, skipping the focusgroup that extends in the orthogonal axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -11,7 +11,7 @@
 <script src="../../resources/focusgroup-utils.js"></script>
 
 <div id=root focusgroup>
-  <div id=item1 tabindex=0 focusgroup="extend horizontal">
+  <div id=item1 tabindex=0 focusgroup="extend inline">
     <span id=item2 tabindex=-1>item2</span>
   </div>
   <span id=item3 tabindex=-1>item3</span>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-and-skips-orthogonal-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-and-skips-orthogonal-inner-focusgroup.html
index 64a4b76ebf8..d4623401e00 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-and-skips-orthogonal-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-and-skips-orthogonal-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps and skips the orthogonal inner focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -11,7 +11,7 @@
 <script src="../../resources/focusgroup-utils.js"></script>
 
 <div id=root focusgroup=wrap>
-  <div focusgroup="extend horizontal">
+  <div focusgroup="extend inline">
     <span id=item1 tabindex=-1>item1</span>
     <span id=item2 tabindex=-1>item2</span>
   </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-appropriate-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-appropriate-focusgroup.html
index fa9c72b0bdf..c387cc22f4a 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-appropriate-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-appropriate-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the appropriate focusgroup.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,12 +10,12 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div focusgroup=wrap> <!--Supports vertical wrapping-->
-  <div focusgroup="extend horizontal"> <!--Doesn't support vertical wrapping-->
+<div focusgroup=wrap> <!--Supports block wrapping-->
+  <div focusgroup="extend inline"> <!--Doesn't support block wrapping-->
     <span id=item1 tabindex=0>item1</span>
     <div id=item2 tabindex=-1 focusgroup="extend wrap">
       <!--Supports wrapping in both axis, but only extend the
-          wrapping behavior of its ancestors in the horizontal axis. -->
+          wrapping behavior of its ancestors in the inline axis. -->
       <span id=item3 tabindex=-1>item3</span>
       <span id=item4 tabindex=-1>item4</span>
     </div>
diff --git a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-inner-focusgroup.html b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-inner-focusgroup.html
index 8fd44ba0f1d..d34b71c32b2 100644
--- a/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-inner-focusgroup.html
+++ b/tests/wpt/tests/html/interaction/focus/focusgroup/tentative/forward-navigation/vertical/wraps-in-inner-focusgroup.html
@@ -2,7 +2,7 @@
 <meta charset="utf-8">
 <title>HTML Test: focusgroup - Focus wraps in the inner focusgroup only since the outer focusgroup only wraps in the other axis.</title>
 <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
-<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
+<link rel="help" href="https://open-ui.org/components/focusgroup.explainer/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
@@ -10,11 +10,11 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="../../resources/focusgroup-utils.js"></script>
 
-<div id=root focusgroup="horizontal wrap">
+<div id=root focusgroup="inline wrap">
   <span id=item1 tabindex=0>item1</span>
   <div id=item2 tabindex=-1 focusgroup="extend wrap">
     <!--This focusgroup supports wrapping in both axis, but only extend the wrapping
-        behavior of its parent in the horizontal axis. -->
+        behavior of its parent in the inline axis. -->
     <span id=item3 tabindex=-1>item3</span>
     <span id=item4 tabindex=-1>item4</span>
   </div>
diff --git a/tests/wpt/tests/html/rendering/widgets/input-text-size.html b/tests/wpt/tests/html/rendering/widgets/input-text-size.html
index fb3008df08f..4838399405a 100644
--- a/tests/wpt/tests/html/rendering/widgets/input-text-size.html
+++ b/tests/wpt/tests/html/rendering/widgets/input-text-size.html
@@ -34,7 +34,7 @@ test(() => {
 test(() => {
   const computedString = getComputedStyle(computed).width;
   assert_equals(computed.offsetWidth,
-      parseInt(computedString.substring(0, computedString.length - 2)));
+      Math.round(computedString.substring(0, computedString.length - 2)));
 }, 'Size attribute value affects layout-dependent computed style');
 
 test(() => {
diff --git a/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-001.html b/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-001.html
new file mode 100644
index 00000000000..e15d2cf84d6
--- /dev/null
+++ b/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-001.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<link rel="help" href="https://html.spec.whatwg.org/C/#the-textarea-element-2">
+<title>Test textarea width and height accounting for scrollbars</title>
+<meta name="author" title="Luke Warlow" href="mailto:lwarlow@igalia.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<textarea id="rows1" rows="1"></textarea>
+<textarea id="rows1Hidden" rows="1" style="overflow-x: hidden"></textarea>
+<textarea id="rows1Scroll" rows="1" style="overflow-x: scroll"></textarea>
+<textarea id="cols3" cols="3"></textarea>
+<textarea id="cols3Hidden" cols="3" style="overflow-y: hidden"></textarea>
+<textarea id="cols3Scroll" cols="3" style="overflow-y: scroll"></textarea>
+<div id="scrollableDiv" style="overflow:scroll"></div>
+
+<script>
+const scrollbarsHaveThickness = (scrollableDiv.offsetHeight != 0);
+test(() => {
+  assert_equals(rows1.offsetWidth, rows1Hidden.offsetWidth);
+  assert_equals(rows1.offsetHeight, rows1Hidden.offsetHeight);
+}, 'rows=1 doesnt include scrollbar thickness');
+
+test(() => {
+  assert_equals(rows1.offsetWidth, rows1Scroll.offsetWidth);
+  if (scrollbarsHaveThickness) {
+    assert_less_than(rows1.offsetHeight, rows1Scroll.offsetHeight);
+  } else {
+    assert_equals(rows1.offsetHeight, rows1Scroll.offsetHeight);
+  }
+}, 'rows=1 overflow scroll includes scrollbar thickness');
+
+test(() => {
+  assert_equals(cols3.offsetWidth, cols3Scroll.offsetWidth);
+  if (scrollbarsHaveThickness) {
+    assert_greater_than(cols3.offsetWidth, cols3Hidden.offsetWidth);
+  } else {
+    assert_equals(cols3.offsetWidth, cols3Hidden.offsetWidth);
+  }
+  assert_equals(cols3.offsetHeight, cols3Scroll.offsetHeight);
+  assert_equals(cols3.offsetHeight, cols3Hidden.offsetHeight);
+}, 'cols=3 includes scrollbar thickness');
+</script>
diff --git a/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-002.html b/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-002.html
new file mode 100644
index 00000000000..c4f35a08969
--- /dev/null
+++ b/tests/wpt/tests/html/rendering/widgets/textarea-scrollbar-sizing-002.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<link rel="help" href="https://html.spec.whatwg.org/C/#the-textarea-element-2">
+<title>Test textarea width and height accounting for scrollbars, with vertical writing mode</title>
+<meta name="author" title="Luke Warlow" href="mailto:lwarlow@igalia.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<style>textarea { writing-mode: vertical-lr }</style>
+<textarea id="rows1" rows="1"></textarea>
+<textarea id="rows1Hidden" rows="1" style="overflow-y: hidden"></textarea>
+<textarea id="rows1Scroll" rows="1" style="overflow-y: scroll"></textarea>
+<textarea id="cols3" cols="3"></textarea>
+<textarea id="cols3Hidden" cols="3" style="overflow-x: hidden"></textarea>
+<textarea id="cols3Scroll" cols="3" style="overflow-x: scroll"></textarea>
+<div id="scrollableDiv" style="overflow:scroll"></div>
+
+<script>
+const scrollbarsHaveThickness = (scrollableDiv.offsetHeight != 0);
+test(() => {
+  assert_equals(rows1.offsetHeight, rows1Hidden.offsetHeight);
+  assert_equals(rows1.offsetWidth, rows1Hidden.offsetWidth);
+}, 'rows=1 doesnt include scrollbar thickness');
+
+test(() => {
+  assert_equals(rows1.offsetHeight, rows1Scroll.offsetHeight);
+  if (scrollbarsHaveThickness) {
+    assert_less_than(rows1.offsetWidth, rows1Scroll.offsetWidth);
+  } else {
+    assert_equals(rows1.offsetWidth, rows1Scroll.offsetWidth);
+  }
+}, 'rows=1 overflow scroll includes scrollbar thickness');
+
+test(() => {
+  assert_equals(cols3.offsetHeight, cols3Scroll.offsetHeight);
+  if (scrollbarsHaveThickness) {
+    assert_greater_than(cols3.offsetHeight, cols3Hidden.offsetHeight);
+  } else {
+    assert_equals(cols3.offsetHeight, cols3Hidden.offsetHeight);
+  }
+  assert_equals(cols3.offsetWidth, cols3Scroll.offsetWidth);
+  assert_equals(cols3.offsetWidth, cols3Hidden.offsetWidth);
+}, 'cols=3 includes scrollbar thickness');
+</script>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print-ref.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print-ref.html
new file mode 100644
index 00000000000..a6bf424400b
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<p>
+  Object image not displayed should not load.
+</p>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print.html
new file mode 100644
index 00000000000..40158cb3de4
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading-for-print.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>Test loading of 'display: none' image for print</title>
+
+<link rel="help" href="https://crbug.com/41477900">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element">
+<!--
+  Based on step 2 of the spec algorithm:
+  "... if the element is not being rendered,
+  then jump to the step below labeled fallback."
+-->
+
+<link rel="match" href="object-image-display-none-loading-for-print-ref.html">
+
+<style>
+  #target {
+    display: none;
+  }
+</style>
+
+<script>
+  function obj_onload() {
+    const p = document.createElement('p');
+    p.innerHTML = `FAIL: Object image was loaded.`;
+    p.style.color = 'red';
+    document.body.appendChild(p);
+  }
+</script>
+
+<p>
+  Object image not displayed should not load.
+</p>
+
+<div>
+<object
+  data="/images/red.png"
+  id="target"
+  onload="obj_onload();"
+  type="image/png"
+></object>
+</div>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading.html
new file mode 100644
index 00000000000..de95aef4363
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-display-none-loading.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/41477900">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element">
+<!--
+  Based on step 2 of the spec algorithm:
+  "... if the element is not being rendered,
+  then jump to the step below labeled fallback."
+-->
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+  const t = async_test(
+    "Test that object image not displayed is not loaded unnecessarily."
+  );
+
+  function obj_onload() {
+    t.unreached_func(
+      "Object image not displayed on screen should not load."
+    )();
+  }
+
+  t.step_timeout(() => {
+    t.done();
+  }, 2000);
+</script>
+
+<style>
+  #target {
+    display: none;
+  }
+</style>
+
+<object
+  data="/images/red.png"
+  id="target"
+  onload="obj_onload();"
+  type="image/png"
+>
+  Fallback Text
+</object>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html
new file mode 100644
index 00000000000..c3e5d8d1c5e
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print-ref.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<p>
+  Should print a green rectangle but not display it on screen.
+</p>
+<img src="/images/green.png" alt="A green rectangle">
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print.html
new file mode 100644
index 00000000000..b51a1bb1d33
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-image-only-for-print.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Test print result of image not displayed on screen</title>
+
+<link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element">
+<link rel="help" href="https://crbug.com/41477900">
+
+<link rel="match" href="object-image-only-for-print-ref.html">
+
+<style>
+  @media not print {
+    .print-only {
+      display: none;
+    }
+  }
+</style>
+
+<p>
+  Should print a green rectangle but not display it on screen.
+</p>
+
+<div>
+<object
+  class="print-only"
+  data="/images/green.png"
+  type="image/png"
+></object>
+</div>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-svg-only-for-print.html b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-svg-only-for-print.html
new file mode 100644
index 00000000000..7bb804c2e2e
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-object-element/object-svg-only-for-print.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>Test print result of svg not displayed on screen</title>
+
+<link rel="help" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-object-element">
+<link rel="help" href="https://crbug.com/41477900">
+
+<link rel="match" href="object-image-only-for-print-ref.html">
+
+<style>
+  @media not print {
+    .print-only {
+      display: none;
+    }
+  }
+</style>
+
+<p>
+  Should print a green rectangle but not display it on screen.
+</p>
+
+<div>
+<object
+  class="print-only"
+  data="/images/green.svg"
+  id="target"
+  type="image/svg+xml"
+></object>
+</div>
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation-ref.html b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation-ref.html
new file mode 100644
index 00000000000..f5b70c495bc
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation-ref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<link rel=stylesheet href="resources/stylable-select-styles.css">
+
+<style>
+button {
+  color: green;
+}
+</style>
+
+<div id=container class=stylable-select-container>
+  <button>button</button>
+  <div id=popover popover=auto anchor=container class=stylable-select-datalist>
+    <div tabindex=0 class=stylable-select-option>one</div>
+    <div class=stylable-select-option>two</div>
+  </div>
+</div>
+
+<script>
+document.getElementById('popover').showPopover();
+document.querySelector('.stylable-select-option').focus();
+</script>
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html
new file mode 100644
index 00000000000..809ae69d7af
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-open-invalidation.tentative.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://github.com/whatwg/html/issues/9799">
+<link rel=match href="select-open-invalidation-ref.html">
+
+<style>
+select > button {
+  color: red;
+}
+select:open > button {
+  color: green;
+}
+</style>
+
+<select style="appearance:base-select">
+  <button type=popover>button</button>
+  <datalist>
+    <option>one</option>
+    <option>two</option>
+  </datalist>
+</select>
+
+<script>
+(async () => {
+  await new Promise(requestAnimationFrame);
+  try {
+    document.querySelector('datalist').showPopover();
+  } catch (error) {}
+  await new Promise(requestAnimationFrame);
+  document.documentElement.classList.remove('reftest-wait');
+})();
+</script>
diff --git a/tests/wpt/tests/html/semantics/interactive-elements/the-dialog-element/dialog-close-via-attribute.html b/tests/wpt/tests/html/semantics/interactive-elements/the-dialog-element/dialog-close-via-attribute.tentative.html
similarity index 100%
rename from tests/wpt/tests/html/semantics/interactive-elements/the-dialog-element/dialog-close-via-attribute.html
rename to tests/wpt/tests/html/semantics/interactive-elements/the-dialog-element/dialog-close-via-attribute.tentative.html
diff --git a/tests/wpt/tests/html/semantics/permission-element/bounded-sizes.tentative.html b/tests/wpt/tests/html/semantics/permission-element/bounded-sizes.tentative.html
index 2010cd0a544..357e4fe961a 100644
--- a/tests/wpt/tests/html/semantics/permission-element/bounded-sizes.tentative.html
+++ b/tests/wpt/tests/html/semantics/permission-element/bounded-sizes.tentative.html
@@ -11,7 +11,7 @@
   * max-height should be at most 3x min-height
 -->
 <style>
-  #id1 {
+  #el_outside_bounds {
     font-size: 10px;
     width: auto;
     height: auto;
@@ -28,7 +28,7 @@
     min-width: 10px;
     max-width: 1000px;
   }
-  #id2 {
+  #el_inside_bounds {
     font-size: 10px;
     width: auto;
     height: auto;
@@ -41,15 +41,23 @@
     padding-bottom: 6px;
     padding-right: 46px;
   }
+  #el_large_min_size {
+    font-size: 10px;
+    width: auto;
+    height: auto;
+
+    min-height: 50px;
+    min-width: 1000px;
+  }
 </style>
 
 
-<permission id="id1" type="geolocation">
-<permission id="id2" type="camera">
+<permission id="el_outside_bounds" type="geolocation">
+<permission id="el_inside_bounds" type="camera">
+<permission id="el_large_min_size" type="microphone">
 
 <script>
   test(function(){
-    let el_outside_bounds = document.getElementById("id1");
     let min_height = getComputedStyle(el_outside_bounds).minHeight;
     let max_height = getComputedStyle(el_outside_bounds).maxHeight;
     assert_true(min_height === "calc(10px)" || min_height === "10px", "min-height");
@@ -63,7 +71,6 @@
   }, "Properties with out-of-bounds values should be corrected");
 
   test(function(){
-    let el_inside_bounds = document.getElementById("id2");
     assert_equals(getComputedStyle(el_inside_bounds).minHeight, "calc(11px)", "min-height");
     assert_equals(getComputedStyle(el_inside_bounds).maxHeight, "calc(29px)", "max-height");
     assert_equals(getComputedStyle(el_inside_bounds).paddingLeft, "45px", "padding-left");
@@ -71,5 +78,12 @@
     assert_equals(getComputedStyle(el_inside_bounds).paddingTop, "5px", "padding-top");
     assert_equals(getComputedStyle(el_inside_bounds).paddingBottom, "5px", "padding-bottom");
   }, "Properties with values in bounds should not be modified");
+
+  test(function() {
+    let min_height = getComputedStyle(el_large_min_size).minHeight;
+    assert_true(min_height === "calc(30px)" || min_height === "30px", "min-height");
+    assert_not_equals(getComputedStyle(el_outside_bounds).minWidth, "1000px", "min-width");
+  }, "'Min' properties should not be allowed to go over the maximum allowed values for 'max' properties");
+
 </script>
 </body>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest-ref.html b/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest-ref.html
new file mode 100644
index 00000000000..0e97fe4f462
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest-ref.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<body>
+  <div>
+    The permission element min-width/height should not be allowed to exceeed the maximum
+    allowed value for max-width/height.
+  </div>
+
+<style>
+  #id1 {
+    font-size: 10px;
+    height: 30px;
+    /* Used to determine the "fit-content" width value which is used
+       to set the width to 3 * fit-content.
+    */
+    width: fit-content;
+  }
+  #id2 {
+    font-size: 10px;
+    height: 10px;
+    width: fit-content;
+  }
+</style>
+
+<div><permission id="id1" type="geolocation"></div>
+<div><permission id="id2" type="camera"></div>
+<script>
+  el = document.getElementById("id1");
+  let w = getComputedStyle(el).width;
+  el.style.width = `calc(3 * ${w})`; // 3 * fit-content
+</script>
+</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest.tentative.html b/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest.tentative.html
new file mode 100644
index 00000000000..9a786101693
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/large-min-size-reftest.tentative.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<link rel="match" href="large-min-size-reftest-ref.html">
+<link rel="help" href="https://github.com/WICG/PEPC/blob/main/explainer.md#locking-the-pepc-style">
+<body>
+  <div>
+    The permission element min-width/height should not be allowed to exceeed the maximum
+    allowed value for max-width/height.
+  </div>
+
+<style>
+  #id1 {
+    font-size: 10px;
+    min-height: 100px;
+    min-width: 1000px;
+
+    width: 1px;
+    height: 1px;
+  }
+  #id2 {
+    font-size: 10px;
+    max-height: 5px;
+    max-width: 10px;
+
+    width: 1000px;
+    height: 1000px;
+  }
+</style>
+
+<div><permission id="id1" type="geolocation"></div>
+<div><permission id="id2" type="camera"></div>
+</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/negative-offset-and-margin.tentative.html b/tests/wpt/tests/html/semantics/permission-element/negative-offset-and-margin.tentative.html
index de622bbb3e8..7d6be1a3bc8 100644
--- a/tests/wpt/tests/html/semantics/permission-element/negative-offset-and-margin.tentative.html
+++ b/tests/wpt/tests/html/semantics/permission-element/negative-offset-and-margin.tentative.html
@@ -4,14 +4,14 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <body>
-<!--The permission element should not allow setting negative margins or outline-offset
+<!--The permission element should not allow setting negative outline-offset or margins under 4px.
 -->
 <style>
   #id1 {
     outline-offset: -50px;
-    margin-top: -50px;
+    margin-top: 3px;
     margin-left: -50px;
-    margin-bottom: -50px;
+    margin-bottom: 0px;
     margin-right: -50px;
   }
   #id2 {
@@ -41,11 +41,11 @@
   test(function(){
     var el_with_negatives = document.getElementById("id1");
     assert_equals(getComputedStyle(el_with_negatives).outlineOffset, "0px", "outline-offset");
-    assert_equals(getComputedStyle(el_with_negatives).marginLeft, "0px", "margin-left");
-    assert_equals(getComputedStyle(el_with_negatives).marginRight, "0px", "margin-right");
-    assert_equals(getComputedStyle(el_with_negatives).marginTop, "0px", "margin-top");
-    assert_equals(getComputedStyle(el_with_negatives).marginBottom, "0px", "margin-bottom");
-  }, "Negative margins/offset should be changed to 0px");
+    assert_equals(getComputedStyle(el_with_negatives).marginLeft, "4px", "margin-left");
+    assert_equals(getComputedStyle(el_with_negatives).marginRight, "4px", "margin-right");
+    assert_equals(getComputedStyle(el_with_negatives).marginTop, "4px", "margin-top");
+    assert_equals(getComputedStyle(el_with_negatives).marginBottom, "4px", "margin-bottom");
+  }, "Negative margins/offset should be changed to 4px");
 
   test(function(){
     var el_with_positives = document.getElementById("id2");
@@ -59,10 +59,10 @@
   test(function(){
     var el_with_negative_expr = document.getElementById("id3");
     assert_equals(getComputedStyle(el_with_negative_expr).outlineOffset, "0px", "outline-offset");
-    assert_equals(getComputedStyle(el_with_negative_expr).marginLeft, "0px", "margin-left");
-    assert_equals(getComputedStyle(el_with_negative_expr).marginRight, "0px", "margin-right");
-    assert_equals(getComputedStyle(el_with_negative_expr).marginTop, "0px", "margin-top");
-    assert_equals(getComputedStyle(el_with_negative_expr).marginBottom, "0px", "margin-bottom");
-  }, "Expressions margins/offset should always return at least 0px");
+    assert_equals(getComputedStyle(el_with_negative_expr).marginLeft, "4px", "margin-left");
+    assert_equals(getComputedStyle(el_with_negative_expr).marginRight, "4px", "margin-right");
+    assert_equals(getComputedStyle(el_with_negative_expr).marginTop, "4px", "margin-top");
+    assert_equals(getComputedStyle(el_with_negative_expr).marginBottom, "4px", "margin-bottom");
+  }, "Expressions margins/offset should always return at least 4px");
 </script>
 </body>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div-ref.html b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div-ref.html
new file mode 100644
index 00000000000..38d0cc25a52
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div-ref.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<body>
+  <div>
+    The permission element should not create any pseudo elements.
+  </div>
+
+  <style>
+    .inner::before {
+      content: 'BEFORE';
+    }
+    .inner::after {
+      content: 'AFTER';
+    }
+  </style>
+
+  <p>Should only see BEFOREAFTER once below</p>
+
+  <div>
+    <div class="inner"></div>
+    <permission type="camera">
+  </div>
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div.tentative.html b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div.tentative.html
new file mode 100644
index 00000000000..e9080708021
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-in-div.tentative.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<link rel="match" href="pseudo-elements-in-div-ref.html">
+<link rel="help" href="https://github.com/WICG/PEPC/blob/main/explainer.md#locking-the-pepc-style">
+<link rel="help" href="https://crbug.com/342355738">
+<body>
+  <div>
+    The permission element should not create any pseudo elements.
+  </div>
+
+  <style>
+    /* The space (descendent combinator) is necessary to apply this CSS to children of .outer */
+    .outer ::before {
+      content: 'BEFORE';
+    }
+    .outer ::after {
+      content: 'AFTER';
+    }
+  </style>
+
+  <p>Should only see BEFOREAFTER once below</p>
+
+  <!-- Apply the ::before/::after to descendants of the .outer div. The empty inner div
+     simulates a quirk scenario discovered in chromium, but the expectation should match
+     all implementation. -->
+  <div class="outer">
+    <div></div>
+    <permission type="camera">
+  </div>
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-ref.html b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-ref.html
new file mode 100644
index 00000000000..ca7ad2daa89
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<meta charset=utf-8>
+<body>
+  <div>
+    The permission element should not create any pseudo elements.
+  </div>
+
+  <p>You should not see the word FAIL below.</p>
+
+  <permission type="camera">
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/permission-element/pseudo-elements.tentative.html b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements.tentative.html
new file mode 100644
index 00000000000..e0faefeb55d
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/pseudo-elements.tentative.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<link rel="match" href="pseudo-elements-ref.html">
+<link rel="help" href="https://github.com/WICG/PEPC/blob/main/explainer.md#locking-the-pepc-style">
+<body>
+  <div>
+    The permission element should not create any pseudo elements.
+  </div>
+
+  <style>
+    permission::before, permission::after { content: "FAIL"; }
+  </style>
+
+  <p>You should not see the word FAIL below.</p>
+
+  <permission type="camera">
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display-ref.html b/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display-ref.html
new file mode 100644
index 00000000000..1cd13d06935
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="stylesheet" href="resources/popover-styles.css">
+
+<div class="fake-popover" anchor></div>
+
+<style>
+  .fake-popover {
+    background: green;
+    width: 100px;
+    height: 100px;
+  }
+  body { margin: 0; }
+</style>
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html b/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html
new file mode 100644
index 00000000000..72395cc7103
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/popovers/popover-anchor-inset-rule-display.tentative.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel=author href="mailto:masonf@chromium.org">
+<link rel=help href="https://html.spec.whatwg.org/multipage/popover.html">
+<link rel=match href="popover-anchor-inset-rule-display-ref.html">
+
+<div popover=manual anchor></div>
+
+<style>
+  [popover][anchor] {
+    background: green;
+    width: 100px;
+    height: 100px;
+  }
+  body { margin: 0; }
+</style>
+
+<script>
+  document.querySelector('[popover]').showPopover();
+</script>
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-scroll-within.html b/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-scroll-within.html
index 2329aea201c..053ea03ab3b 100644
--- a/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-scroll-within.html
+++ b/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-scroll-within.html
@@ -1,7 +1,6 @@
 <!DOCTYPE html>
 <meta charset="utf-8" />
 <title>Popover light dismiss behavior when scrolled within</title>
-<meta name="timeout" content="long">
 <link rel="author" href="mailto:masonf@chromium.org">
 <link rel=help href="https://open-ui.org/components/popover.research.explainer">
 <script src="/resources/testharness.js"></script>
@@ -26,11 +25,11 @@
 
 <div popover id=p>Inside popover
   <div style="height:2000px;background:lightgreen"></div>
-  Bottom of popover6
+  Bottom of popover
 </div>
 <button popovertarget=p>Popover</button>
 <style>
-  #p6 {
+  #p {
     width: 300px;
     height: 300px;
     overflow-y: scroll;
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-with-anchor.tentative.tentative.html b/tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-with-anchor.tentative.html
similarity index 100%
rename from tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-with-anchor.tentative.tentative.html
rename to tests/wpt/tests/html/semantics/popovers/popover-light-dismiss-with-anchor.tentative.html
diff --git a/tests/wpt/tests/html/semantics/popovers/resources/popover-styles.css b/tests/wpt/tests/html/semantics/popovers/resources/popover-styles.css
index df683c3c64f..94b81609326 100644
--- a/tests/wpt/tests/html/semantics/popovers/resources/popover-styles.css
+++ b/tests/wpt/tests/html/semantics/popovers/resources/popover-styles.css
@@ -10,6 +10,9 @@
   color: CanvasText;
   background-color: Canvas;
 }
+.fake-popover[anchor] {
+  inset: auto;
+}
 .fake-popover-backdrop {
   position: fixed;
   inset:0;
diff --git a/tests/wpt/tests/html/semantics/selectors/pseudo-classes/readwrite-readonly.html b/tests/wpt/tests/html/semantics/selectors/pseudo-classes/readwrite-readonly.html
index fb8a5b9ad70..ad579ccc0ea 100644
--- a/tests/wpt/tests/html/semantics/selectors/pseudo-classes/readwrite-readonly.html
+++ b/tests/wpt/tests/html/semantics/selectors/pseudo-classes/readwrite-readonly.html
@@ -5,6 +5,17 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="utils.js"></script>
+<script>
+  class CustomElement extends HTMLElement {
+    static formAssociated = true;
+
+    constructor() {
+      super();
+    }
+  }
+
+  window.customElements.define("custom-element", CustomElement);
+</script>
 <div id="log"></div>
 
 <div id=set0>
@@ -58,6 +69,14 @@
   </div>
 </div>
 
+<div id=set6>
+  <custom-element id=ce1>content</custom-element>
+  <custom-element id=ce2 contenteditable>content</custom-element>
+  <custom-element id=ce3 contenteditable readonly>content</custom-element>
+  <custom-element id=ce4 contenteditable disabled>content</custom-element>
+  <custom-element id=ce5 contenteditable readonly disabled>content</custom-element>
+</div>
+
 <script>
   testSelectorIdsMatch("#set0 :read-write", [], "The :read-write pseudo-class must not match input elements to which the readonly attribute does not apply");
 
@@ -115,4 +134,9 @@
 
   testSelectorIdsMatch("#set5 :read-write", ["cd1", "p3", "ci3", "ci4", "ct3", "ct4"], "The :read-write pseudo-class must match elements that are inside editing hosts, but not match inputs and textareas inside that aren't");
 
+  testSelectorIdsMatch("#set6 :read-only", ["ce1"], "The :read-only pseudo-class must match form-associated custom elements");
+
+  testSelectorIdsMatch("#set6 :read-write", ["ce2", "ce3", "ce4", "ce5"], "The :read-write pseudo-class must match form-associated contenteditable custom elements");
+
+
 </script>
diff --git a/tests/wpt/tests/images/wpt-logo/wpt-logo-darkblue-bg.svg b/tests/wpt/tests/images/wpt-logo/wpt-logo-darkblue-bg.svg
index 49f374c00cd..e101e9bea42 100644
--- a/tests/wpt/tests/images/wpt-logo/wpt-logo-darkblue-bg.svg
+++ b/tests/wpt/tests/images/wpt-logo/wpt-logo-darkblue-bg.svg
@@ -1,9 +1,9 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 762 762">
-<rect x="0" y="0" fill="#003C56" width="762" height="762"/>
-<rect x="183.9" y="511.4" fill="#FFFFFF" width="201.5" height="38"/>
-<path fill="#FFFFFF" d="M504.9,549.4c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6
-V287.4h-38v56.5h-51.9v-92.6h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
-c0-46.5-37.8-84.3-84.3-84.3H366.4c-10.5,0-19,8.5-19,19V386l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
-l-46.2,79.2V213.4h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L350,465.7c3.4,5.8,9.7,9.4,16.4,9.4
-c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C437.3,519.1,467.6,549.4,504.9,549.4z"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 398 340">
+<rect x="0" y="0" fill="#003C56" width="398" height="340"/>
+<rect x="0" y="300" fill="#FFFFFF" width="201.5" height="38"/>
+<path fill="#FFFFFF" d="M320.9,338c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6V76
+h-38v56.5h-51.9V40h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
+C398,39.8,360.2,2,313.8,2H182.4c-10.5,0-19,8.5-19,19v153.6l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
+l-46.2,79.2V2h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L166,254.3c3.4,5.8,9.7,9.4,16.4,9.4
+c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C253.3,307.7,283.6,338,320.9,338z"/>
 </svg>
diff --git a/tests/wpt/tests/images/wpt-logo/wpt-logo-lightblue-bg.svg b/tests/wpt/tests/images/wpt-logo/wpt-logo-lightblue-bg.svg
index 2f61672df33..718327d2818 100644
--- a/tests/wpt/tests/images/wpt-logo/wpt-logo-lightblue-bg.svg
+++ b/tests/wpt/tests/images/wpt-logo/wpt-logo-lightblue-bg.svg
@@ -1,9 +1,9 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 762 762">
-<rect x="0" y="0" fill="#78D9F4" width="762" height="762"/>
-<rect x="183.9" y="511.4" fill="#003C56" width="201.5" height="38"/>
-<path fill="#003C56" d="M504.9,549.4c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6
-V287.4h-38v56.5h-51.9v-92.6h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
-c0-46.5-37.8-84.3-84.3-84.3H366.4c-10.5,0-19,8.5-19,19V386l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
-l-46.2,79.2V213.4h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L350,465.7c3.4,5.8,9.7,9.4,16.4,9.4
-c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C437.3,519.1,467.6,549.4,504.9,549.4z"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 398 340">
+<rect x="0" y="0" fill="#78D9F4" width="398" height="340"/>
+<rect x="0" y="300" fill="#003C56" width="201.5" height="38"/>
+<path fill="#003C56" d="M320.9,338c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6V76
+h-38v56.5h-51.9V40h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
+C398,39.8,360.2,2,313.8,2H182.4c-10.5,0-19,8.5-19,19v153.6l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
+l-46.2,79.2V2h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L166,254.3c3.4,5.8,9.7,9.4,16.4,9.4
+c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C253.3,307.7,283.6,338,320.9,338z"/>
 </svg>
diff --git a/tests/wpt/tests/images/wpt-logo/wpt-logo-orange-bg.svg b/tests/wpt/tests/images/wpt-logo/wpt-logo-orange-bg.svg
index fde2c15f1b2..a3e4b0c5f9b 100644
--- a/tests/wpt/tests/images/wpt-logo/wpt-logo-orange-bg.svg
+++ b/tests/wpt/tests/images/wpt-logo/wpt-logo-orange-bg.svg
@@ -1,9 +1,9 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 762 762">
-<rect x="0" y="0" fill="#E86E43" width="762" height="762"/>
-<rect x="183.9" y="511.4" fill="#FFFFFF" width="201.5" height="38"/>
-<path fill="#FFFFFF" d="M504.9,549.4c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6
-V287.4h-38v56.5h-51.9v-92.6h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
-c0-46.5-37.8-84.3-84.3-84.3H366.4c-10.5,0-19,8.5-19,19V386l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
-l-46.2,79.2V213.4h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L350,465.7c3.4,5.8,9.7,9.4,16.4,9.4
-c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C437.3,519.1,467.6,549.4,504.9,549.4z"/>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 398 340">
+<rect x="0" y="0" fill="#E86E43" width="398" height="340"/>
+<rect x="0" y="300" fill="#FFFFFF" width="201.5" height="38"/>
+<path fill="#FFFFFF" d="M320.9,338c37.3,0,67.6-30.3,67.6-67.6v-19h-38v19c0,16.3-13.3,29.6-29.6,29.6c-16.3,0-29.6-13.3-29.6-29.6V76
+h-38v56.5h-51.9V40h112.4c25.5,0,46.3,20.8,46.3,46.3c0,20-13,37.8-31.8,44v39.1c40-6.9,69.8-42.1,69.8-83
+C398,39.8,360.2,2,313.8,2H182.4c-10.5,0-19,8.5-19,19v153.6l-46.4-79.4c-3.4-5.8-9.7-9.4-16.4-9.4c-6.7,0-13,3.6-16.4,9.4
+l-46.2,79.2V2h-38v242.7c0,8.6,5.8,16.1,14,18.3c8.3,2.2,17.1-1.4,21.4-8.8l65.2-111.8L166,254.3c3.4,5.8,9.7,9.4,16.4,9.4
+c1.7,0,3.3-0.2,5-0.7c8.3-2.2,14-9.8,14-18.3v-74.2h51.9v99.8C253.3,307.7,283.6,338,320.9,338z"/>
 </svg>
diff --git a/tests/wpt/tests/import-maps/dynamic-integrity.html b/tests/wpt/tests/import-maps/dynamic-integrity.html
index 7a6fed71086..e4ac7b431b5 100644
--- a/tests/wpt/tests/import-maps/dynamic-integrity.html
+++ b/tests/wpt/tests/import-maps/dynamic-integrity.html
@@ -2,9 +2,6 @@
 <html>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script>
-let log;
-</script>
 <script type="importmap">
 {
   "imports": {
@@ -23,17 +20,19 @@ let log;
     "./resources/log.js?pipe=sub&name=Multiple": "sha384-foobar sha512-rOJN8igD0+jW6lwNN3+InhXTgQztVHlq/HJ0riswXp8kMoiIDx5JpmCwuVem6Ll9q2LFNSu1xq23bsBMMQk1rg==",
     "./resources/log.js?pipe=sub&name=BadHashWithNoImport": "sha384-foobar",
     "./resources/log.js?pipe=sub&name=BareURL": "sha384-foobar",
+    "./resources/log.js?pipe=sub&name=EventHandlerPass": "sha384-d4yrBK8a55vlyYz2QEnlaU64PPpdKBkblD2KmfozI61mC1ij6RrZJaGCTsVxPuJ2",
+    "./resources/log.js?pipe=sub&name=EventHandlerFail": "sha384-foobar",
     "bare2": "sha384-foobar",
     "resources/log.js?pipe=sub&name=Bare": "sha384-foobar"
   }
 }
 </script>
-<script type="module">
+<script>
+let log;
 const test_not_loaded = (url, description) => {
   promise_test(async t => {
     log = [];
-    const promise = import(url);
-    await promise_rejects_js(t, TypeError, promise);
+    await promise_rejects_js(t, TypeError, import(url));
     assert_array_equals(log, []);
   }, description);
 };
@@ -46,42 +45,80 @@ const test_loaded = (url, log_expectation, description) => {
   }, description);
 };
 
-test_not_loaded("./resources/log.js?pipe=sub&name=ResolvesToBadHash",
-  'script was not loaded, as its resolved URL failed its integrity check');
-
-test_loaded("./resources/log.js?pipe=sub&name=ResolvesToNoHash", ["log:NoHash"],
-  'script was loaded, as its resolved URL had no integrity check, despite' +
-  ' its specifier having one');
-
-test_loaded("./resources/log.js?pipe=sub&name=GoodHash", ["log:GoodHash"],
-  'script was loaded, as its integrity check passed');
-
-test_not_loaded("./resources/log.js?pipe=sub&name=BadHashWithNoImport",
-  'Script with no import definition was not loaded, as it failed its' +
-  ' integrity check');
-
-test_not_loaded("bare",
-  'Bare specifier script was not loaded, as it failed its integrity check');
-
-test_loaded("bare2", ["log:F"],
-  'Bare specifier used for integrity loaded, as its definition should have' +
-  ' used the URL');
-
-test_loaded("./resources/log.js?pipe=sub&name=InvalidExtra",
+test_not_loaded(
+  "./resources/log.js?pipe=sub&name=ResolvesToBadHash",
+  "script was not loaded, as its resolved URL failed its integrity check"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=ResolvesToNoHash",
+  ["log:NoHash"],
+  "script was loaded, as its resolved URL had no integrity check, despite its specifier having one"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=GoodHash",
+  ["log:GoodHash"],
+  "script was loaded, as its integrity check passed"
+);
+test_not_loaded(
+  "./resources/log.js?pipe=sub&name=BadHashWithNoImport",
+  "Script with no import definition was not loaded, as it failed its integrity check"
+);
+test_not_loaded(
+  "bare",
+  "Bare specifier script was not loaded, as it failed its integrity check"
+);
+test_loaded(
+  "bare2",
+  ["log:F"],
+  "Bare specifier used for integrity loaded, as its definition should have used the URL"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=InvalidExtra",
   ["log:InvalidExtra"],
-  'script was loaded, as its integrity check passed, despite having an extra' +
-  ' invalid hash');
+  "script was loaded, as its integrity check passed, despite having an extra invalid hash"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=Suffix",
+  ["log:Suffix"],
+  "script was loaded, as its integrity check passed, despite having an invalid suffix"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=Multiple",
+  ["log:Multiple"],
+  "script was loaded, as its integrity check passed given multiple hashes. This also makes sure that the larger hash is picked"
+);
+test_loaded(
+  "./resources/log.js?pipe=sub&name=Bare",
+  ["log:Bare"],
+  "script was loaded, as its integrity check was ignored, as it was defined using a URL that looks like a bare specifier"
+);
 
-test_loaded("./resources/log.js?pipe=sub&name=Suffix", ["log:Suffix"],
-  'script was loaded, as its integrity check passed, despite having an' +
-  ' invalid suffix');
+promise_test(async () => {
+  log = [];
+  const img = new Image();
+  const promise = new Promise((resolve, reject) => {
+    img.onload = () => {
+      import('./resources/log.js?pipe=sub&name=EventHandlerPass').then(resolve).catch(reject);
+    };
+    img.src = "/images/green.png?1";
+  });
 
-test_loaded("./resources/log.js?pipe=sub&name=Multiple", ["log:Multiple"],
-  'script was loaded, as its integrity check passed given multiple hashes.' +
-  ' This also makes sure that the larger hash is picked.');
+  await promise;
+  assert_equals(log.length, 1);
+  assert_equals(log[0], "log:EventHandlerPass");
+}, "Script imported inside an event handler was loaded as its valid integrity check passed");
 
-test_loaded("./resources/log.js?pipe=sub&name=Bare",["log:Bare"],
-  'script was loaded, as its integrity check was ignored, as it was defined' +
-  ' using a URL that looks like a bare specifier');
+promise_test(async t => {
+  log = [];
+  const img = new Image();
+  const promise = new Promise((resolve, reject) => {
+    img.onload = () => {
+      import('./resources/log.js?pipe=sub&name=EventHandlerFail').then(resolve).catch(reject);
+    };
+    img.src = "/images/green.png?2";
+  });
+
+  await promise_rejects_js(t, TypeError, promise);
+}, "Script imported inside an event handler was not loaded as its integrity check failed");
 </script>
 
diff --git a/tests/wpt/tests/import-maps/no-referencing-script-integrity-valid.html b/tests/wpt/tests/import-maps/no-referencing-script-integrity-valid.html
index 2594459fcbf..136fe23fdbc 100644
--- a/tests/wpt/tests/import-maps/no-referencing-script-integrity-valid.html
+++ b/tests/wpt/tests/import-maps/no-referencing-script-integrity-valid.html
@@ -23,6 +23,11 @@ let promise = new Promise((resolve, reject) => {
 </script>
 </head>
 <body>
+<!-- This is testing the part of
+https://html.spec.whatwg.org/multipage/webappapis.html#hostloadimportedmodule
+where step 6's condition is false and referencingScript remains null.
+Therefore, the onload event must be defined as an HTML attribute, outside of any script tag.
+-->
 <img src="/images/green.png?2"
   onload="import('./resources/log.js?pipe=sub&name=NoReferencingScriptValidCheck').then(promiseResolve).catch(promiseReject)">
 <script>
diff --git a/tests/wpt/tests/import-maps/no-referencing-script-integrity.html b/tests/wpt/tests/import-maps/no-referencing-script-integrity.html
index 8025ba3b899..32d902a5e3d 100644
--- a/tests/wpt/tests/import-maps/no-referencing-script-integrity.html
+++ b/tests/wpt/tests/import-maps/no-referencing-script-integrity.html
@@ -23,6 +23,11 @@ let promise = new Promise((resolve, reject) => {
 </script>
 </head>
 <body>
+<!-- This is testing the part of
+https://html.spec.whatwg.org/multipage/webappapis.html#hostloadimportedmodule
+where step 6's condition is false and referencingScript remains null.
+Therefore, the onload event must be defined as an HTML attribute, outside of any script tag.
+-->
 <img src="/images/green.png"
   onload="import('./resources/log.js?pipe=sub&name=NoReferencingScriptInvalidCheck').then(promiseResolve).catch(promiseReject)">
 <script type="module">
diff --git a/tests/wpt/tests/import-maps/nonimport-integrity.html b/tests/wpt/tests/import-maps/nonimport-integrity.html
index 1157ee64ee7..460ff10ff6f 100644
--- a/tests/wpt/tests/import-maps/nonimport-integrity.html
+++ b/tests/wpt/tests/import-maps/nonimport-integrity.html
@@ -23,17 +23,24 @@ let log = [];
 }
 </script>
 <script type="module">
+const test_not_loaded = async (elem) => {
+  const promise = new Promise((resolve, reject) => {
+    elem.onload = () =>  {
+       reject(new Error("It shouldn't have loaded"));
+     };
+    elem.onerror = resolve;
+  });
+  document.head.appendChild(elem);
+  const event = await promise;
+  assert_equals(event.type, "error");
+};
+
 promise_test(async t => {
   log = [];
   const script = document.createElement("script");
   script.type = "module";
   script.src = "./resources/log.js?pipe=sub&name=ModuleNoIntegrity";
-  const promise = new Promise((resolve, reject) => {
-    script.onload = resolve;
-    script.onerror = () => { reject(Error()); };
-  });
-  document.head.appendChild(script);
-  await promise_rejects_js(t, Error, promise);
+  await test_not_loaded(script);
 }, "Script was not loaded as its integrity check was not ignored");
 
 promise_test(async () => {
@@ -74,12 +81,7 @@ promise_test(async t => {
   script.type = "module";
   script.integrity = "sha384-foobar";
   script.src = "./resources/log.js?pipe=sub&name=ModuleBadIntegrityAttribute";
-  const promise = new Promise((resolve, reject) => {
-    script.onload = resolve;
-    script.onerror = () => { reject(Error()); };
-  });
-  document.head.appendChild(script);
-  await promise_rejects_js(t, Error, promise);
+  await test_not_loaded(script);
 }, "Script was not loaded as its bad integrity attribute was not overridden");
 
 promise_test(async t => {
@@ -125,12 +127,7 @@ promise_test(async t => {
   link.rel = "modulepreload";
   link.integrity = "sha384-foobar";
   link.href = "./resources/log.js?pipe=sub&name=ModulePreloadBadIntegrityAttribute";
-  const promise = new Promise((resolve, reject) => {
-    link.onload = resolve;
-    link.onerror = () => { reject(Error()); };
-  });
-  document.head.appendChild(link);
-  await promise_rejects_js(t, Error, promise);
+  await test_not_loaded(link);
 }, "Modulepreload was not loaded as its bad integrity attribute was not ignored");
 
 promise_test(async () => {
diff --git a/tests/wpt/tests/import-maps/static-integrity.html b/tests/wpt/tests/import-maps/static-integrity.html
index d1d3649339e..c9aa68e7741 100644
--- a/tests/wpt/tests/import-maps/static-integrity.html
+++ b/tests/wpt/tests/import-maps/static-integrity.html
@@ -25,8 +25,8 @@ import './resources/log.js?pipe=sub&name=A';
 </script>
 <script type="module">
 test(t => {
-    assert_array_equals(log, []);
-  }, 'Static script did not load as it failed its integrity check');
+  assert_array_equals(log, []);
+}, 'Static script did not load as it failed its integrity check');
 log = [];
 </script>
 <script type="module">
@@ -34,8 +34,8 @@ import './resources/log.js?pipe=sub&name=C';
 </script>
 <script type="module">
 test(t => {
-    assert_array_equals(log, ["log:D"]);
-  }, 'Static script loaded as its integrity check passed');
+  assert_array_equals(log, ["log:D"]);
+}, 'Static script loaded as its integrity check passed');
 log = [];
 </script>
 <script type="module">
@@ -43,9 +43,9 @@ import './resources/log.js?pipe=sub&name=X';
 </script>
 <script type="module">
 test(t => {
-    assert_array_equals(log, []);
-  }, 'Static script did not load as it failed its integrity check, even' +
-     ' without an import defined');
+  assert_array_equals(log, []);
+}, 'Static script did not load as it failed its integrity check, even' +
+   ' without an import defined');
 log = [];
 </script>
 <script type="module">
@@ -53,16 +53,16 @@ import './resources/log.js?pipe=sub&name=Y';
 </script>
 <script type="module">
 test(t => {
-    assert_array_equals(log, ["log:Y"]);
-  }, 'Static script loaded as its integrity check passed without an import' +
-     ' defined');
+  assert_array_equals(log, ["log:Y"]);
+}, 'Static script loaded as its integrity check passed without an import' +
+   ' defined');
 log = [];
 </script>
 <script type="module" src="./resources/log.js?pipe=sub&name=Z">;
 </script>
 <script type="module">
 test(t => {
-    assert_array_equals(log, []);
-  }, 'HTML-based module script did not load as its integrity check failed.');
+  assert_array_equals(log, []);
+}, 'HTML-based module script did not load as its integrity check failed.');
 log = [];
 </script>
diff --git a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/set_permission.https.html.ini b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/set_permission.https.html.ini
index 026e6823515..2a1487799ef 100644
--- a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/set_permission.https.html.ini
+++ b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/set_permission.https.html.ini
@@ -1,8 +1,8 @@
 [set_permission.https.html]
   [Grant Permission]
     expected:
-      if product != "chrome": FAIL
+      if product == "safari": FAIL
 
   [Deny Permission]
     expected:
-      if product != "chrome": FAIL
+      if product == "safari": FAIL
diff --git a/tests/wpt/tests/interfaces/compute-pressure.idl b/tests/wpt/tests/interfaces/compute-pressure.idl
index a90febffc3b..77537feb106 100644
--- a/tests/wpt/tests/interfaces/compute-pressure.idl
+++ b/tests/wpt/tests/interfaces/compute-pressure.idl
@@ -21,7 +21,7 @@ interface PressureObserver {
   undefined disconnect();
   sequence<PressureRecord> takeRecords();
 
-  [SameObject] static readonly attribute FrozenArray<PressureSource> supportedSources;
+  [SameObject] static readonly attribute FrozenArray<PressureSource> knownSources;
 };
 
 [Exposed=(DedicatedWorker,SharedWorker,Window), SecureContext]
diff --git a/tests/wpt/tests/interfaces/css-scroll-snap-2.idl b/tests/wpt/tests/interfaces/css-scroll-snap-2.idl
index a346969c56a..bb42d60600f 100644
--- a/tests/wpt/tests/interfaces/css-scroll-snap-2.idl
+++ b/tests/wpt/tests/interfaces/css-scroll-snap-2.idl
@@ -14,3 +14,8 @@ interface SnapEvent : Event {
   readonly attribute Node? snapTargetBlock;
   readonly attribute Node? snapTargetInline;
 };
+
+partial interface mixin GlobalEventHandlers {
+  attribute EventHandler onsnapchanged;
+  attribute EventHandler onsnapchanging;
+};
diff --git a/tests/wpt/tests/interfaces/cssom-view.idl b/tests/wpt/tests/interfaces/cssom-view.idl
index 57e559e7f12..5c6c2f58a8c 100644
--- a/tests/wpt/tests/interfaces/cssom-view.idl
+++ b/tests/wpt/tests/interfaces/cssom-view.idl
@@ -84,7 +84,7 @@ interface Screen {
 partial interface Document {
   Element? elementFromPoint(double x, double y);
   sequence<Element> elementsFromPoint(double x, double y);
-  CaretPosition? caretPositionFromPoint(double x, double y);
+  CaretPosition? caretPositionFromPoint(double x, double y, ShadowRoot... shadowRoots);
   readonly attribute Element? scrollingElement;
 };
 
diff --git a/tests/wpt/tests/interfaces/digital-identities.idl b/tests/wpt/tests/interfaces/digital-identities.idl
index 2d1b7208502..bbb0c938303 100644
--- a/tests/wpt/tests/interfaces/digital-identities.idl
+++ b/tests/wpt/tests/interfaces/digital-identities.idl
@@ -1,7 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into webref
 // (https://github.com/w3c/webref)
-// Source: Digital Credentials (https://wicg.github.io/digital-identities/)
+// Source: Digital Credentials (https://wicg.github.io/digital-credentials)
 
 partial interface Navigator {
   [SecureContext, SameObject] readonly attribute CredentialsContainer identity;
@@ -23,5 +23,5 @@ dictionary IdentityRequestProvider {
 [Exposed=Window, SecureContext]
 interface DigitalCredential : Credential {
   readonly attribute DOMString protocol;
-  [SameObject] readonly attribute Uint8Array data;
+  readonly attribute any data;
 };
diff --git a/tests/wpt/tests/interfaces/encrypted-media.idl b/tests/wpt/tests/interfaces/encrypted-media.idl
index f5d5aa8d6c0..c034cd0bf0d 100644
--- a/tests/wpt/tests/interfaces/encrypted-media.idl
+++ b/tests/wpt/tests/interfaces/encrypted-media.idl
@@ -5,128 +5,118 @@
 
 [Exposed=Window]
 partial interface Navigator {
-    [SecureContext] Promise<MediaKeySystemAccess> requestMediaKeySystemAccess (DOMString keySystem, sequence<MediaKeySystemConfiguration> supportedConfigurations);
+  [SecureContext] Promise<MediaKeySystemAccess> requestMediaKeySystemAccess (
+      DOMString keySystem,
+      sequence<MediaKeySystemConfiguration> supportedConfigurations);
 };
 
 enum MediaKeysRequirement {
-    "required",
-    "optional",
-    "not-allowed"
+  "required",
+  "optional",
+  "not-allowed"
 };
 
 dictionary MediaKeySystemConfiguration {
-             DOMString                               label = "";
-             sequence<DOMString>                     initDataTypes = [];
-             sequence<MediaKeySystemMediaCapability> audioCapabilities = [];
-             sequence<MediaKeySystemMediaCapability> videoCapabilities = [];
-             MediaKeysRequirement                    distinctiveIdentifier = "optional";
-             MediaKeysRequirement                    persistentState = "optional";
-             sequence<DOMString>                     sessionTypes;
+  DOMString                               label = "";
+  sequence<DOMString>                     initDataTypes = [];
+  sequence<MediaKeySystemMediaCapability> audioCapabilities = [];
+  sequence<MediaKeySystemMediaCapability> videoCapabilities = [];
+  MediaKeysRequirement                    distinctiveIdentifier = "optional";
+  MediaKeysRequirement                    persistentState = "optional";
+  sequence<DOMString>                     sessionTypes;
 };
 
 dictionary MediaKeySystemMediaCapability {
-   DOMString contentType = "";
-   DOMString? encryptionScheme = null;
-   DOMString robustness = "";
+  DOMString contentType = "";
+  DOMString? encryptionScheme = null;
+  DOMString robustness = "";
 };
 
 [Exposed=Window, SecureContext] interface MediaKeySystemAccess {
-    readonly        attribute DOMString keySystem;
-    MediaKeySystemConfiguration getConfiguration ();
-    Promise<MediaKeys>          createMediaKeys ();
+  readonly attribute DOMString keySystem;
+  MediaKeySystemConfiguration  getConfiguration ();
+  Promise<MediaKeys>           createMediaKeys ();
 };
 
 enum MediaKeySessionType {
-    "temporary",
-    "persistent-license"
+  "temporary",
+  "persistent-license"
 };
 
 [Exposed=Window, SecureContext] interface MediaKeys {
-    MediaKeySession  createSession (optional MediaKeySessionType sessionType = "temporary");
+    MediaKeySession createSession (optional MediaKeySessionType sessionType = "temporary");
     Promise<MediaKeyStatus> getStatusForPolicy (optional MediaKeysPolicy policy = {});
     Promise<boolean> setServerCertificate (BufferSource serverCertificate);
 };
 
 dictionary MediaKeysPolicy {
-    HDCPVersion minHdcpVersion;
-};
-
-enum HDCPVersion {
-    "1.0",
-    "1.1",
-    "1.2",
-    "1.3",
-    "1.4",
-    "2.0",
-    "2.1",
-    "2.2",
-    "2.3",
+    DOMString minHdcpVersion;
 };
 
 enum MediaKeySessionClosedReason {
-    "internal-error",
-    "closed-by-application",
-    "release-acknowledged",
-    "hardware-context-reset",
-    "resource-evicted"
+  "internal-error",
+  "closed-by-application",
+  "release-acknowledged",
+  "hardware-context-reset",
+  "resource-evicted"
 };
 
 [Exposed=Window, SecureContext] interface MediaKeySession : EventTarget {
-    readonly        attribute DOMString                            sessionId;
-    readonly        attribute unrestricted double                  expiration;
-    readonly        attribute Promise<MediaKeySessionClosedReason> closed;
-    readonly        attribute MediaKeyStatusMap                    keyStatuses;
-                    attribute EventHandler                         onkeystatuseschange;
-                    attribute EventHandler                         onmessage;
-    Promise<undefined>    generateRequest (DOMString initDataType, BufferSource initData);
-    Promise<boolean> load (DOMString sessionId);
-    Promise<undefined>    update (BufferSource response);
-    Promise<undefined>    close ();
-    Promise<undefined>    remove ();
+  readonly        attribute DOMString                            sessionId;
+  readonly        attribute unrestricted double                  expiration;
+  readonly        attribute Promise<MediaKeySessionClosedReason> closed;
+  readonly        attribute MediaKeyStatusMap                    keyStatuses;
+                  attribute EventHandler                         onkeystatuseschange;
+                  attribute EventHandler                         onmessage;
+  Promise<undefined>    generateRequest (DOMString initDataType, BufferSource initData);
+  Promise<boolean> load (DOMString sessionId);
+  Promise<undefined>    update (BufferSource response);
+  Promise<undefined>    close ();
+  Promise<undefined>    remove ();
 };
 
 [Exposed=Window, SecureContext] interface MediaKeyStatusMap {
-    iterable<BufferSource,MediaKeyStatus>;
-    readonly        attribute unsigned long size;
-    boolean has (BufferSource keyId);
-    (MediaKeyStatus or undefined)     get (BufferSource keyId);
+  iterable<BufferSource,MediaKeyStatus>;
+  readonly attribute unsigned long size;
+  boolean has (BufferSource keyId);
+  (MediaKeyStatus or undefined) get (BufferSource keyId);
 };
 
 enum MediaKeyStatus {
-    "usable",
-    "expired",
-    "released",
-    "output-restricted",
-    "output-downscaled",
-    "usable-in-future",
-    "status-pending",
-    "internal-error"
+  "usable",
+  "expired",
+  "released",
+  "output-restricted",
+  "output-downscaled",
+  "usable-in-future",
+  "status-pending",
+  "internal-error"
 };
 
 enum MediaKeyMessageType {
-    "license-request",
-    "license-renewal",
-    "license-release",
-    "individualization-request"
+  "license-request",
+  "license-renewal",
+  "license-release",
+  "individualization-request"
 };
 
 [Exposed=Window, SecureContext]
 interface MediaKeyMessageEvent : Event {
-    constructor(DOMString type, MediaKeyMessageEventInit eventInitDict);
-    readonly        attribute MediaKeyMessageType messageType;
-    readonly        attribute ArrayBuffer         message;
+  constructor(DOMString type, MediaKeyMessageEventInit eventInitDict);
+  readonly attribute MediaKeyMessageType messageType;
+  readonly attribute ArrayBuffer         message;
 };
 
 dictionary MediaKeyMessageEventInit : EventInit {
-             required MediaKeyMessageType messageType;
-             required ArrayBuffer         message;
+  required MediaKeyMessageType messageType;
+  required ArrayBuffer         message;
 };
 
 [Exposed=Window] partial interface HTMLMediaElement {
-    [SecureContext] readonly        attribute MediaKeys?   mediaKeys;
-                                    attribute EventHandler onencrypted;
-                                    attribute EventHandler onwaitingforkey;
-    [SecureContext] Promise<undefined> setMediaKeys (MediaKeys? mediaKeys);
+  [SecureContext] readonly        attribute MediaKeys?   mediaKeys;
+                                  attribute EventHandler onencrypted;
+                                  attribute EventHandler onwaitingforkey;
+  [SecureContext] Promise<undefined> setMediaKeys (MediaKeys? mediaKeys);
 };
 
 [Exposed=Window]
@@ -137,6 +127,6 @@ interface MediaEncryptedEvent : Event {
 };
 
 dictionary MediaEncryptedEventInit : EventInit {
-             DOMString    initDataType = "";
-             ArrayBuffer? initData = null;
+  DOMString    initDataType = "";
+  ArrayBuffer? initData = null;
 };
diff --git a/tests/wpt/tests/interfaces/fenced-frame.idl b/tests/wpt/tests/interfaces/fenced-frame.idl
index 2107655aa92..9846d4037e9 100644
--- a/tests/wpt/tests/interfaces/fenced-frame.idl
+++ b/tests/wpt/tests/interfaces/fenced-frame.idl
@@ -20,6 +20,8 @@ typedef USVString FencedFrameConfigURL;
 
 [Exposed=Window, Serializable]
 interface FencedFrameConfig {
+  constructor(USVString url);
+
   readonly attribute FencedFrameConfigSize? containerWidth;
   readonly attribute FencedFrameConfigSize? containerHeight;
   readonly attribute FencedFrameConfigSize? contentWidth;
@@ -53,10 +55,17 @@ dictionary FenceEvent {
   DOMString eventData;
   sequence<FenceReportingDestination> destination;
 
+  // Determines if this data can be sent in a reportEvent() beacon or automatic
+  // beacon that originates from a document that is cross-origin to the mapped
+  // URL of the fenced frame config that loaded this frame tree.
+  // Note that automatic beacon data can only be set from documents that are
+  // same-origin to the fenced frame config’s mapped URL, so this effectively
+  // opts in the data to being used in a cross-origin subframe.
+  boolean crossOriginExposed = false;
+
   // When setting event data to be used later in an automatic beacon, the
   // following properties are used:
   boolean once = false;
-  boolean crossOriginExposed = false;
 
   // When reporting to a custom destination URL (with substitution of macros defined by
   // the Protected Audience buyer), the following property is used:
diff --git a/tests/wpt/tests/interfaces/fetch.idl b/tests/wpt/tests/interfaces/fetch.idl
index 5038aeba6cd..965a82d13f5 100644
--- a/tests/wpt/tests/interfaces/fetch.idl
+++ b/tests/wpt/tests/interfaces/fetch.idl
@@ -26,6 +26,7 @@ interface mixin Body {
   readonly attribute boolean bodyUsed;
   [NewObject] Promise<ArrayBuffer> arrayBuffer();
   [NewObject] Promise<Blob> blob();
+  [NewObject] Promise<Uint8Array> bytes();
   [NewObject] Promise<FormData> formData();
   [NewObject] Promise<any> json();
   [NewObject] Promise<USVString> text();
diff --git a/tests/wpt/tests/interfaces/mediacapture-streams.idl b/tests/wpt/tests/interfaces/mediacapture-streams.idl
index f2ca21389e9..62b846db0b4 100644
--- a/tests/wpt/tests/interfaces/mediacapture-streams.idl
+++ b/tests/wpt/tests/interfaces/mediacapture-streams.idl
@@ -179,6 +179,16 @@ interface InputDeviceInfo : MediaDeviceInfo {
   MediaTrackCapabilities getCapabilities();
 };
 
+[Exposed=Window]
+interface DeviceChangeEvent : Event {
+  constructor(DOMString type, optional DeviceChangeEventInit eventInitDict = {});
+  [SameObject] readonly attribute FrozenArray<MediaDeviceInfo> devices;
+};
+
+dictionary DeviceChangeEventInit : EventInit {
+  sequence<MediaDeviceInfo> devices = [];
+};
+
 partial interface MediaDevices {
   MediaTrackSupportedConstraints getSupportedConstraints();
   Promise<MediaStream> getUserMedia(optional MediaStreamConstraints constraints = {});
diff --git a/tests/wpt/tests/interfaces/orientation-event.idl b/tests/wpt/tests/interfaces/orientation-event.idl
index ffacfe576f2..3683016d034 100644
--- a/tests/wpt/tests/interfaces/orientation-event.idl
+++ b/tests/wpt/tests/interfaces/orientation-event.idl
@@ -1,7 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into webref
 // (https://github.com/w3c/webref)
-// Source: DeviceOrientation Event Specification (https://w3c.github.io/deviceorientation/)
+// Source: Device Orientation and Motion (https://w3c.github.io/deviceorientation/)
 
 partial interface Window {
     [SecureContext] attribute EventHandler ondeviceorientation;
diff --git a/tests/wpt/tests/interfaces/service-workers.idl b/tests/wpt/tests/interfaces/service-workers.idl
index 1ddc6d71d83..87d48398f72 100644
--- a/tests/wpt/tests/interfaces/service-workers.idl
+++ b/tests/wpt/tests/interfaces/service-workers.idl
@@ -60,7 +60,7 @@ interface ServiceWorkerContainer : EventTarget {
   readonly attribute ServiceWorker? controller;
   readonly attribute Promise<ServiceWorkerRegistration> ready;
 
-  [NewObject] Promise<ServiceWorkerRegistration> register(USVString scriptURL, optional RegistrationOptions options = {});
+  [NewObject] Promise<ServiceWorkerRegistration> register((TrustedScriptURL or USVString) scriptURL, optional RegistrationOptions options = {});
 
   [NewObject] Promise<(ServiceWorkerRegistration or undefined)> getRegistration(optional USVString clientURL = "");
   [NewObject] Promise<FrozenArray<ServiceWorkerRegistration>> getRegistrations();
diff --git a/tests/wpt/tests/interfaces/turtledove.idl b/tests/wpt/tests/interfaces/turtledove.idl
index 39e90ddae19..fdaef0268b6 100644
--- a/tests/wpt/tests/interfaces/turtledove.idl
+++ b/tests/wpt/tests/interfaces/turtledove.idl
@@ -85,6 +85,7 @@ dictionary AuctionAdConfig {
   unsigned long long reportingTimeout;
   USVString sellerCurrency;
   Promise<record<USVString, USVString>> perBuyerCurrencies;
+  record<USVString, unsigned short> perBuyerMultiBidLimits;
   record<USVString, unsigned short> perBuyerGroupLimits;
   record<USVString, unsigned short> perBuyerExperimentGroupIds;
   record<USVString, record<USVString, double>> perBuyerPrioritySignals;
@@ -125,7 +126,7 @@ interface InterestGroupBiddingAndScoringScriptRunnerGlobalScope : InterestGroupS
          InterestGroupBiddingScriptRunnerGlobalScope)]
 interface InterestGroupBiddingScriptRunnerGlobalScope
         : InterestGroupBiddingAndScoringScriptRunnerGlobalScope {
-  boolean setBid(optional GenerateBidOutput generateBidOutput = {});
+  boolean setBid(optional (GenerateBidOutput or sequence<GenerateBidOutput>) oneOrManyBids = []);
   undefined setPriority(double priority);
   undefined setPrioritySignalsOverride(DOMString key, optional double? priority);
 };
@@ -145,6 +146,8 @@ dictionary GenerateBidOutput {
   double adCost;
   unrestricted double modelingSignals;
   boolean allowComponentAuction = false;
+  unsigned long targetNumAdComponents;
+  unsigned long numMandatoryAdComponents = 0;
 };
 
 [Exposed=InterestGroupScoringScriptRunnerGlobalScope,
@@ -199,6 +202,7 @@ dictionary BiddingBrowserSignals {
   required long bidCount;
   required long recency;
   required long adComponentsLimit;
+  required unsigned short multiBidLimit;
 
   USVString topLevelSeller;
   sequence<PreviousWin> prevWinsMs;
diff --git a/tests/wpt/tests/interfaces/webcodecs-av1-codec-registration.idl b/tests/wpt/tests/interfaces/webcodecs-av1-codec-registration.idl
index ab20879728d..00e4493d3c0 100644
--- a/tests/wpt/tests/interfaces/webcodecs-av1-codec-registration.idl
+++ b/tests/wpt/tests/interfaces/webcodecs-av1-codec-registration.idl
@@ -3,14 +3,6 @@
 // (https://github.com/w3c/webref)
 // Source: AV1 WebCodecs Registration (https://w3c.github.io/webcodecs/av1_codec_registration.html)
 
-partial dictionary VideoEncoderConfig {
-  AV1EncoderConfig av1;
-};
-
-dictionary AV1EncoderConfig {
-  boolean forceScreenContentTools = false;
-};
-
 partial dictionary VideoEncoderEncodeOptions {
   VideoEncoderEncodeOptionsForAv1 av1;
 };
diff --git a/tests/wpt/tests/interfaces/webnn.idl b/tests/wpt/tests/interfaces/webnn.idl
index 9af2879214e..297a2bdbf87 100644
--- a/tests/wpt/tests/interfaces/webnn.idl
+++ b/tests/wpt/tests/interfaces/webnn.idl
@@ -113,7 +113,6 @@ dictionary MLBatchNormalizationOptions {
   MLOperand bias;
   [EnforceRange] unsigned long axis = 1;
   float epsilon = 1e-5;
-  MLActivation activation;
 };
 
 partial interface MLGraphBuilder {
@@ -154,7 +153,6 @@ dictionary MLConv2dOptions {
   MLInputOperandLayout inputLayout = "nchw";
   MLConv2dFilterOperandLayout filterLayout = "oihw";
   MLOperand bias;
-  MLActivation activation;
 };
 
 partial interface MLGraphBuilder {
@@ -179,7 +177,6 @@ dictionary MLConvTranspose2dOptions {
   MLInputOperandLayout inputLayout = "nchw";
   MLConvTranspose2dFilterOperandLayout filterLayout = "iohw";
   MLOperand bias;
-  MLActivation activation;
 };
 
 partial interface MLGraphBuilder {
diff --git a/tests/wpt/tests/interfaces/webrtc.idl b/tests/wpt/tests/interfaces/webrtc.idl
index 65e7aa622c5..da3a6f4645e 100644
--- a/tests/wpt/tests/interfaces/webrtc.idl
+++ b/tests/wpt/tests/interfaces/webrtc.idl
@@ -148,7 +148,7 @@ interface RTCSessionDescription {
   constructor(RTCSessionDescriptionInit descriptionInitDict);
   readonly attribute RTCSdpType type;
   readonly attribute DOMString sdp;
-  [Default] object toJSON();
+  [Default] RTCSessionDescriptionInit toJSON();
 };
 
 dictionary RTCSessionDescriptionInit {
diff --git a/tests/wpt/tests/lint.ignore b/tests/wpt/tests/lint.ignore
index 9d846b35194..df9b2f87ca0 100644
--- a/tests/wpt/tests/lint.ignore
+++ b/tests/wpt/tests/lint.ignore
@@ -827,7 +827,3 @@ TESTDRIVER-IN-UNSUPPORTED-TYPE: payment-handler/change-shipping-option-manual.ht
 TESTDRIVER-IN-UNSUPPORTED-TYPE: payment-handler/payment-request-event-manual.https.html
 TESTDRIVER-IN-UNSUPPORTED-TYPE: payment-handler/supports-shipping-contact-delegation-manual.https.html
 TESTDRIVER-IN-UNSUPPORTED-TYPE: shadow-dom/crashtests/move-to-new-tree-1343016.html
-
-# Pre compressed data using Shared Brotli and Shared Zstandard.
-TRAILING WHITESPACE, INDENT TABS, CR AT EOL: fetch/compression-dictionary/resources/compressed.br-d.data
-TRAILING WHITESPACE, INDENT TABS, CR AT EOL: fetch/compression-dictionary/resources/compressed.zstd-d.data
diff --git a/tests/wpt/tests/notifications/idlharness.https.any.js b/tests/wpt/tests/notifications/idlharness.https.any.js
index e3afe2c2196..0f11638e592 100644
--- a/tests/wpt/tests/notifications/idlharness.https.any.js
+++ b/tests/wpt/tests/notifications/idlharness.https.any.js
@@ -26,6 +26,7 @@ idl_test(
         Notification: ['notification'],
       });
       self.notification = new Notification('title');
+      self.notification.close();
     }
   }
 );
diff --git a/tests/wpt/tests/notifications/lang.https.html b/tests/wpt/tests/notifications/lang.https.html
index be1795c8c9e..e01fc109af9 100644
--- a/tests/wpt/tests/notifications/lang.https.html
+++ b/tests/wpt/tests/notifications/lang.https.html
@@ -4,9 +4,10 @@
 <link rel="author" title="Apple Inc." href="http://www.apple.com/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="resources/helpers.js"></script>
 <script>
-setup({ explicit_done: true });
-
 /* Validity and well-formedness was determined by using the BCP 47
    Validator at http://schneegans.de/lv/ */
 
@@ -29,20 +30,20 @@ var invalid_langs = ["en-", "en-\-", "foo-\-bar", "id-\-\-Java", "fr-x",
                      "es2-KL-aa-bb-cc-dd", "es3-KM-aa-bb-cc-dd", "fooÉ",
                      "foöÉ-bÁr", "foöÉbÁr"];
 
+
+promise_setup(async () => {
+    // No need to show actual notification
+    await trySettingPermission("prompt");
+});
+
 function test_lang(language, should_passthrough) {
     var expected = should_passthrough ? language : "";
-    test(function() {
-        if (Notification.permission != "granted") {
-            this.force_timeout()
-            this.set_status(this.NOTRUN, "You must allow notifications for this origin before running this test.")
-        }
+    promise_test(async () => {
         var notification = new Notification("This is a notification.", {
             lang: language
         });
+        notification.close();
         assert_equals(notification.lang, expected, "notification.lang");
-        notification.onshow = function() {
-            notification.close();
-        };
     },
     "Roundtripping lang \"" + language + "\". Expecting \"" + expected + "\".");
 }
@@ -58,6 +59,4 @@ for (var i=0; i<well_formed_langs.length; i++) {
 for (var i=0; i<invalid_langs.length; i++) {
     test_lang(invalid_langs[i], false);
 }
-
-done();
 </script>
diff --git a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-resource-timing.https.html b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-resource-timing.https.html
new file mode 100644
index 00000000000..e99c2d3d0b3
--- /dev/null
+++ b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-resource-timing.https.html
@@ -0,0 +1,332 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>
+  Static Router: timing information should be shown when used.
+</title>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js"></script>
+<script src="resources/static-router-helpers.sub.js"></script>
+<body>
+<script>
+const ROUTER_RULE_KEY = 'condition-urlpattern-constructed-source-network';
+const ROUTER_RULE_KEY_URLPATTERN_CACHE =
+  'condition-urlpattern-string-source-cache';
+const ROUTER_RULE_KEY_REQUEST_CACHE = 'condition-request-navigate-source-cache';
+const ROUTER_RULE_KEY_URL_PATTERN_CONSTRUCTED_MATCH_ALL_CACHE =
+  'condition-urlpattern-constructed-match-all-source-cache';
+const ROUTER_RULE_KEY_REQUEST_FETCH = 'condition-urlpattern-string-source-fetch-event';
+const REGISTERED_ROUTE = 'resources/direct.txt';
+const CACHED_ROUTE = 'resources/cache.txt';
+const NON_REGISTERED_ROUTE = 'resources/simple.html';
+
+const RACE_ROUTER_KEY =
+  'condition-urlpattern-string-source-race-network-and-fetch-handler';
+const RACE_SW_SRC = 'resources/static-router-race-network-and-fetch-handler-sw.js';
+const RACE_ROUTE = 'resources/direct.py';
+
+const host_info = get_host_info();
+const path = new URL(".", window.location).pathname;
+
+function resourceUrl(resource) {
+  return `${host_info['HTTPS_ORIGIN']}${path}${resource}`;
+}
+
+// Verify existance of a PerformanceEntry and the order between the timings of
+// ServiceWorker Static routing API.
+//
+// |options| has these properties:
+// performance: Performance interface to verify existance of the entry.
+// url: the URL of resource
+// description: the description passed to each assertion.
+// matched_source: the expected matched source of router evaluation.
+// actual_source: the expected actual source used to get the resource.
+function test_resource_timing(options) {
+  const description = options.description;
+  const entryList = options.performance.getEntriesByName(resourceUrl(options.url));
+  assert_equals(entryList.length, 1, description);
+  const entry = entryList[0];
+
+  assert_equals(entry.matchedSourceType, options.matched_source_type, description);
+  assert_equals(entry.finalSourceType, options.final_source_type, description);
+
+  assert_greater_than(entry.workerRouterEvaluationStart, 0, description);
+  switch (entry.matchedSouceType) {
+    case 'network':
+      assert_equals(entry.workerStart, 0, description);
+      assert_equals(entry.workerCacheLookupStart, 0, description);
+      assert_less_than_equal(entry.workerRouterEvaluationStart, entry.fetchStart, description);
+      break;
+    case 'cache':
+      assert_equals(entry.workerStart, 0, description);
+      assert_greater_than_equal(entry.workerCacheLookupStart, entry.workerRouterEvaluationStart, description);
+      if (entry.finalSourceType === 'cache') {
+        assert_equals(entry.fetchStart, 0, description);
+        assert_less_than_equal(entry.workerCacheLookupStart, entry.responseStart, description);
+      } else {
+        assert_less_than_equal(entry.workerCacheLookupStart, entry.fetchStart, description);
+      }
+      break;
+    case 'race-network-and-fetch':
+      assert_equals(entry.workerCacheLookupStart, 0, description);
+      if (entry.finalSourceType === 'network') {
+        assert_equals(entry.workerStart, 0, description);
+        assert_less_than_equal(entry.workerRouterEvaluationStart, entry.fetchStart, description);
+      } else {
+        assert_greater_than_equal(entry.workerStart, entry.workerRouterEvaluationStart, description);
+        assert_greater_than_equal(entry.fetchStart, entry.workerStart, description);
+      }
+      break;
+    case 'fetch-event':
+    case '':  // i.e. no matching rules
+      assert_equals(entry.workerCacheLookupStart, 0, description);
+      assert_greater_than_equal(entry.workerStart, entry.workerRouterEvaluationStart, description);
+      assert_greater_than_equal(entry.fetchStart, entry.workerStart, description);
+      break;
+  }
+}
+
+promise_test(async t => {
+  const worker = await registerAndActivate(t, ROUTER_RULE_KEY_REQUEST_FETCH);
+  const rnd = randomString();
+  const url = `${NON_REGISTERED_ROUTE}?nonce=${rnd}`;
+  const iframe = await createIframe(t, url);
+  const {errors, requests} = await get_info_from_worker(worker);
+
+  assert_equals(errors.length, 0);
+  assert_equals(requests.length, 1);
+  assert_equals(iframe.contentWindow.document.body.innerText, rnd);
+
+  test_resource_timing({
+    performance: iframe.contentWindow.performance,
+    url: url,
+    matched_source_type: 'fetch-event',
+    final_source_type: 'fetch-event',
+    description: "fetch-event as source on main resource"
+  });
+}, 'Main resource matched the rule with fetch-event source');
+
+iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin, worker) => {
+  const {requests} = await get_info_from_worker(worker);
+  assert_equals(requests.length, 0);
+  assert_equals(iwin.document.body.innerText, "Network\n");
+  test_resource_timing({
+    performance: iwin.performance,
+    url: REGISTERED_ROUTE,
+    matched_source_type: 'network',
+    final_source_type: 'network',
+    description: "network as source on main resource"
+  });
+}, 'Main resource load matched with the condition and resource timing');
+
+iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin, worker) => {
+  const {requests} = await get_info_from_worker(worker);
+  assert_equals(requests.length, 1);
+  assert_equals(
+    requests[0].url,
+    resourceUrl(NON_REGISTERED_ROUTE));
+  assert_equals(requests[0].mode, 'navigate');
+  test_resource_timing({
+    performance: iwin.performance,
+    url: NON_REGISTERED_ROUTE,
+    matched_source_type: '',
+    final_source_type: '',
+    description: "no rule matched on main resource"
+  });
+}, 'Main resource load not matched with the condition and resource timing');
+
+iframeTest(CACHED_ROUTE, ROUTER_RULE_KEY_URLPATTERN_CACHE, async (t, iwin, worker) => {
+  const {requests} = await get_info_from_worker(worker);
+  assert_equals(requests.length, 0);
+  assert_equals(iwin.document.body.innerText, "From cache");
+  test_resource_timing({
+    performance: iwin.performance,
+    url: CACHED_ROUTE,
+    matched_source_type: 'cache',
+    final_source_type: 'cache',
+    description: "cache as source on main resource and cache hit"
+  });
+}, 'Main resource load matched with the cache source and resource timing');
+
+iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY_REQUEST_CACHE, async (t, iwin, worker) => {
+  const {requests} = await get_info_from_worker(worker);
+  // When the request matched to the rule with the "cache" source but failed to
+  // get the cache entry, the fetch handler is not involved and the network
+  // fallback is triggered instead.
+  assert_equals(requests.length, 0);
+  assert_equals(iwin.document.body.innerText, "Here's a simple html file.");
+  test_resource_timing({
+    performance: iwin.performance,
+    url: NON_REGISTERED_ROUTE,
+    matched_source_type: 'cache',
+    final_source_type: 'network',
+    description: "cache as source on main resource and cache miss, fallback to network"
+  });
+}, 'Main resource fallback to the network when there is no cache entry and resource timing');
+
+// Subresource
+iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY_REQUEST_FETCH, async (t, iwin, worker) => {
+  const rnd = randomString();
+  const subresource = `?nonce=${rnd}`;
+  const response = await iwin.fetch(subresource);
+
+  assert_equals(response.status, 200);
+  assert_equals(await response.text(), rnd);
+  const {requests} = await get_info_from_worker(worker);
+  // Main resource request + subreosurce request = 2.
+  assert_equals(requests.length, 2);
+
+  test_resource_timing({
+    performance: iwin.performance,
+    url: `${NON_REGISTERED_ROUTE}${subresource}`,
+    matched_source_type: 'fetch-event',
+    final_source_type: 'fetch-event',
+    description: "fetch-event as source on sub resource"
+  });
+}, 'Subresource load matched the rule fetch-event source');
+
+iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin) => {
+  const rnd = randomString();
+  const subresource = `?nonce=${rnd}`;
+  const response = await iwin.fetch(subresource);
+  assert_equals(await response.text(), rnd);
+  test_resource_timing({
+    performance: iwin.performance,
+    url: NON_REGISTERED_ROUTE + subresource,
+    matched_source_type: '',
+    final_source_type: '',
+    description: "no source type matched"
+  });
+}, 'Subresource load not matched with URLPattern condition');
+
+iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin) => {
+  const rnd = randomString();
+  const subresource = `?nonce=${rnd}`;
+  const response = await iwin.fetch(subresource);
+  assert_equals(await response.text(), "Network\n");
+  test_resource_timing({
+    performance: iwin.performance,
+    url: REGISTERED_ROUTE + subresource,
+    matched_source_type: 'network',
+    final_source_type: 'network',
+    description: "network as source on subresource"
+  });
+}, 'Subresource load matched with URLPattern condition');
+
+iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY_URLPATTERN_CACHE, async (t, iwin) => {
+  // No need to set `resources/` because the request is dispatched from iframe.
+  const CACHED_FILE = 'cache.txt';
+  const response = await iwin.fetch(CACHED_FILE);
+  assert_equals(await response.text(), "From cache");
+  test_resource_timing({
+    performance: iwin.performance,
+    url: CACHED_ROUTE, // We need a path including `resources/` to get the resource
+    matched_source_type: 'cache',
+    final_source_type: 'cache',
+    description: "cache as source on subresource and cache hits"
+  });
+}, 'Subresource load matched with the cache source rule');
+
+iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY_URL_PATTERN_CONSTRUCTED_MATCH_ALL_CACHE, async (t, iwin, worker) => {
+  // Send a request, which is not stored in the cache, but it exists over the network.
+  const rnd = randomString();
+  let subresource = `?nonce=${rnd}`;
+  let response = await iwin.fetch(subresource);
+  assert_equals(await response.text(), "Network\n");
+  assert_equals(response.status, 200);
+
+  // Request is not handled by ServiceWorker.
+  const {requests} = await get_info_from_worker(worker);
+  assert_equals(requests.length, 0);
+  test_resource_timing({
+    performance: iwin.performance,
+    url: `${REGISTERED_ROUTE}${subresource}`,
+    matched_source_type: 'cache',
+    final_source_type: 'network',
+    description: "cache as source on subresource and cache misses"
+  });
+}, 'Subresource load did not match with the cache and fallback to the network');
+
+// Race Tests
+promise_test(async t => {
+  const rnd = randomString();
+  const url = `${RACE_ROUTE}?nonce=${rnd}&server_slow`;
+  const worker = await registerAndActivate(t, RACE_ROUTER_KEY, RACE_SW_SRC);
+  const iframe = await createIframe(t, url);
+  // Expect the response from the fetch handler.
+  assert_equals(iframe.contentWindow.document.body.innerText, rnd);
+  const {requests}  = await get_info_from_worker(worker);
+  assert_equals(requests.length, 1);
+  test_resource_timing({
+    performance: iframe.contentWindow.performance,
+    url: url,
+    matched_source_type: 'race-network-and-fetch',
+    final_source_type: 'fetch-event',
+    description: "race as source on main resource, and fetch-event wins"
+  });
+}, 'Main resource load matched the rule with race-network-and-fetch-handler source, and the fetch handler response is faster than the server response');
+
+promise_test(async t => {
+  const rnd = randomString();
+  const url = `${RACE_ROUTE}?nonce=${rnd}&sw_slow`;
+  const worker = await registerAndActivate(t, RACE_ROUTER_KEY, RACE_SW_SRC);
+  const iframe = await createIframe(t, url);
+  // Expect the response from the netowrk request.
+  assert_equals(iframe.contentWindow.document.body.innerText, "Network with GET request");
+  // Ensure the fetch handler is also executed.
+  const {requests}  = await get_info_from_worker(worker);
+  assert_equals(requests.length, 1);
+  test_resource_timing({
+    performance: iframe.contentWindow.performance,
+    url: url,
+    matched_source_type: 'race-network-and-fetch',
+    final_source_type: 'network',
+    description: "race as source on main resource, and network wins"
+  });
+}, 'Main resource load matched the rule with race-network-and-fetch-handler source, and the server reseponse is faster than the fetch handler');
+
+promise_test(async t => {
+  const rnd = randomString();
+  const worker = await registerAndActivate(t, RACE_ROUTER_KEY, RACE_SW_SRC);
+  const iframe = await createIframe(t, RACE_ROUTE);
+  const subresource = `?nonce=${rnd}&server_slow`;
+  // Expect the response from the fetch handler.
+  const response = await iframe.contentWindow.fetch(subresource);
+  assert_equals(response.status, 200);
+  assert_equals(await response.text(), rnd);
+  const {requests}  = await get_info_from_worker(worker);
+  assert_equals(requests.length, 2);
+
+  test_resource_timing({
+    performance: iframe.contentWindow.performance,
+    url: `${RACE_ROUTE}${subresource}`,
+    matched_source_type: 'race-network-and-fetch',
+    final_source_type: 'fetch-event',
+    description: "race as source on subresource and fetch wins"
+  });
+}, 'Subresource load matched the rule with race-network-and-fetch-handler source, and the fetch handler response is faster than the server response');
+
+promise_test(async t => {
+  const rnd = randomString();
+  const worker = await registerAndActivate(t, RACE_ROUTER_KEY, RACE_SW_SRC);
+  const iframe = await createIframe(t, RACE_ROUTE);
+  const subresource = `?nonce=${rnd}&sw_slow`;
+  // Expect the response from the network request.
+  const response = await iframe.contentWindow.fetch(subresource);
+  assert_equals(response.status, 200);
+  assert_equals(await response.text(), "Network with GET request");
+  // Ensure the fetch handler is also executed.
+  const {requests}  = await get_info_from_worker(worker);
+  assert_equals(requests.length, 2);
+
+  test_resource_timing({
+    performance: iframe.contentWindow.performance,
+    url: `${RACE_ROUTE}${subresource}`,
+    matched_source_type: 'race-network-and-fetch',
+    final_source_type: 'network',
+    description: "race as source on subresource and network wins"
+  });
+}, 'Subresource load matched the rule with race-network-and-fetch-handler source, and the server reseponse is faster than the fetch handler');
+</script>
+</body>
diff --git a/tests/wpt/tests/shared-storage/resources/shared-storage-writable-iframe-in-fenced-inner.https.sub.html b/tests/wpt/tests/shared-storage/resources/shared-storage-writable-iframe-in-fenced-inner.https.sub.html
index 87dbe81a2b5..cd1ed285393 100644
--- a/tests/wpt/tests/shared-storage/resources/shared-storage-writable-iframe-in-fenced-inner.https.sub.html
+++ b/tests/wpt/tests/shared-storage/resources/shared-storage-writable-iframe-in-fenced-inner.https.sub.html
@@ -11,17 +11,17 @@ async function init() {
   const sameOrigin = new URL("", location.href).origin;
   const [outerKey] = parseKeylist();
   let {expectedKey, expectedValue} = parseExpectedKeyAndValueData();
-  const promise = navigateSharedStorageIframe({
+
+  await navigateSharedStorageIframe({
     hasSharedStorageWritableAttribute: true,
     rawWriteHeader: `set;key=${expectedKey};value=${expectedValue}`,
     isSameOrigin: true,
     expectSharedStorageWritableHeader: true,
   });
-  promise.then(() => {
-    verifyKeyValueForOrigin(expectedKey, expectedValue, sameOrigin);
-    deleteKeyForOrigin(expectedKey, sameOrigin);
-    writeValueToServer(outerKey, "writable_iframe_in_fenced_inner_loaded");
-  });
+
+  await verifyKeyValueForOrigin(expectedKey, expectedValue, sameOrigin);
+  await deleteKeyForOrigin(expectedKey, sameOrigin);
+  await writeValueToServer(outerKey, "writable_iframe_in_fenced_inner_loaded");
 }
 
 init();
diff --git a/tests/wpt/tests/shared-storage/resources/util.sub.js b/tests/wpt/tests/shared-storage/resources/util.sub.js
index f147209d609..37b440da52a 100644
--- a/tests/wpt/tests/shared-storage/resources/util.sub.js
+++ b/tests/wpt/tests/shared-storage/resources/util.sub.js
@@ -1,7 +1,9 @@
 function loadSharedStorageImage(data) {
   let {key, value, hasSharedStorageWritableAttribute, isSameOrigin} = data;
+  const encodedKey = encodeURIComponent(key);
+  const encodedValue = encodeURIComponent(value);
   const sameOriginSrc = `/shared-storage/resources/` +
-      `shared-storage-writable-pixel.png?key=${key}&value=${value}`;
+      `shared-storage-writable-pixel.png?key=${encodedKey}&value=${encodedValue}`;
   const crossOriginSrc =
       'https://{{domains[www]}}:{{ports[https][0]}}' + sameOriginSrc;
 
diff --git a/tests/wpt/tests/shared-storage/resources/verify-shared-storage.https.html b/tests/wpt/tests/shared-storage/resources/verify-shared-storage.https.html
index 52c79e7e85a..c2d75ddf852 100644
--- a/tests/wpt/tests/shared-storage/resources/verify-shared-storage.https.html
+++ b/tests/wpt/tests/shared-storage/resources/verify-shared-storage.https.html
@@ -2,12 +2,26 @@
 <html>
 <body>
 <script>
+async function test() {
+  let params = new URL(document.location.toString()).searchParams;
+  let method = params.get("method");
+
   try {
-    window.sharedStorage;
+    if (method == 'set') {
+      await sharedStorage.set('key0', 'key1');
+    } else if (method == 'createWorklet') {
+      await sharedStorage.createWorklet('simple-module.js')
+    } else if (method == 'addModule') {
+      await sharedStorage.worklet.addModule('simple-module.js')
+    }
     window.parent.postMessage({ accessSharedStorageResult: 'success'}, "*");
   } catch (error) {
     window.parent.postMessage({ accessSharedStorageResult: 'failure'}, "*");
   }
+}
+
+test();
+
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-in-sandboxed-iframe.tentative.https.html b/tests/wpt/tests/shared-storage/shared-storage-in-sandboxed-iframe.tentative.https.html
index 44512706bd6..662d0ff6344 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-in-sandboxed-iframe.tentative.https.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-in-sandboxed-iframe.tentative.https.html
@@ -4,10 +4,11 @@
   <script src=/resources/testharnessreport.js></script>
   <script src=/browsing-topics/resources/header-util.sub.js></script>
   <script>
-    function test_shared_storage_in_sandboxed_iframe(test, sandbox_flags, expect_success) {
+    function test_shared_storage_in_sandboxed_iframe(test, sandbox_flags, method, expect_success) {
       let frame = document.createElement('iframe');
       frame.sandbox = sandbox_flags;
-      frame.src = '/shared-storage/resources/verify-shared-storage.https.html';
+      frame.src = '/shared-storage/resources/verify-shared-storage.https.html' +
+                  `?method=${method}`;
 
       window.addEventListener('message', test.step_func(function handler(evt) {
         if (evt.source === frame.contentWindow) {
@@ -29,13 +30,43 @@
     async_test(t => {
       test_shared_storage_in_sandboxed_iframe(t,
         /*sandbox_flags=*/'allow-scripts allow-same-origin',
+        /*method=*/'set',
         /*expect_success=*/true);
-    }, 'test shared storage in sandboxed iframe with "allow-same-origin"');
+    }, 'test sharedStorage.set() in sandboxed iframe with "allow-same-origin"');
 
     async_test(t => {
       test_shared_storage_in_sandboxed_iframe(t,
         /*sandbox_flags=*/'allow-scripts',
+        /*method=*/'set',
         /*expect_success=*/false);
-    }, 'test shared storage in sandboxed iframe without "allow-same-origin"');
+    }, 'test sharedStorage.set() in sandboxed iframe without "allow-same-origin"');
+
+    async_test(t => {
+      test_shared_storage_in_sandboxed_iframe(t,
+        /*sandbox_flags=*/'allow-scripts allow-same-origin',
+        /*method=*/'createWorklet',
+        /*expect_success=*/true);
+    }, 'test sharedStorage.createWorklet() in sandboxed iframe with "allow-same-origin"');
+
+    async_test(t => {
+      test_shared_storage_in_sandboxed_iframe(t,
+        /*sandbox_flags=*/'allow-scripts',
+        /*method=*/'createWorklet',
+        /*expect_success=*/false);
+    }, 'test sharedStorage.createWorklet() in sandboxed iframe without "allow-same-origin"');
+
+    async_test(t => {
+      test_shared_storage_in_sandboxed_iframe(t,
+        /*sandbox_flags=*/'allow-scripts allow-same-origin',
+        /*method=*/'addModule',
+        /*expect_success=*/true);
+    }, 'test sharedStorage.worklet.addModule() in sandboxed iframe with "allow-same-origin"');
+
+    async_test(t => {
+      test_shared_storage_in_sandboxed_iframe(t,
+        /*sandbox_flags=*/'allow-scripts',
+        /*method=*/'addModule',
+        /*expect_success=*/false);
+    }, 'test sharedStorage.worklet.addModule() in sandboxed iframe without "allow-same-origin"');
   </script>
 </body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-for-data-url.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-for-data-url.tentative.https.sub.html
new file mode 100644
index 00000000000..51283579d92
--- /dev/null
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-for-data-url.tentative.https.sub.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<body>
+  <script src=/resources/testharness.js></script>
+  <script src=/resources/testharnessreport.js></script>
+  <script>
+    'use strict';
+
+    promise_test(async t => {
+       const innerCode =
+         `window.parent.postMessage({fetchStatus: "success"}, '*');`;
+       const dataURL = 'data:text/javascript;base64,'
+         + btoa(unescape(encodeURIComponent(innerCode)));
+        await promise_rejects_js(t, TypeError,
+                                 fetch(dataURL, {sharedStorageWritable: true}));
+
+    }, 'shared storage fetch request disallowed for data URL');
+  </script>
+</body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-data-url.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-data-url.tentative.https.sub.html
new file mode 100644
index 00000000000..1ebfdbc96f8
--- /dev/null
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-data-url.tentative.https.sub.html
@@ -0,0 +1,69 @@
+<!doctype html>
+<body>
+  <script src=/resources/testharness.js></script>
+  <script src=/resources/testharnessreport.js></script>
+  <script src=/common/utils.js></script>
+  <script src=/fenced-frame/resources/utils.js></script>
+  <script src=/shared-storage/resources/util.js></script>
+  <script>
+    'use strict';
+    const origin = window.location.origin;
+    const rawSetHeader = 'set;key=hello;value=world';
+    const setHeader = encodeURIComponent(rawSetHeader);
+
+    promise_test(async t => {
+      let frame = document.createElement('iframe');
+      const promise = new Promise((resolve, reject) => {
+        window.addEventListener('message', async function handler(evt) {
+          if (evt.source === frame.contentWindow &&
+              evt.data.sharedStorageFetchStatus) {
+            document.body.removeChild(frame);
+            window.removeEventListener('message', handler);
+            resolve(evt.data.sharedStorageFetchStatus);
+          }
+        });
+        window.addEventListener('error', (error) => {
+          reject(error);
+        });
+      });
+
+      const fetchUrl =
+        `${origin}\\/shared-storage\\/resources\\/shared-storage-write.py`
+        + `?write=${setHeader}`;
+      const fetchCode = `
+let parentOrOpener = window.opener || window.parent;
+let innerFrame = document.createElement('iframe');
+window.addEventListener('message', async (evt) => {
+  if (evt.source === innerFrame.contentWindow) {
+    parentOrOpener.postMessage({sharedStorageFetchStatus: "success"}, '*');
+  }
+});
+window.addEventListener('error', (error) => {
+  parentOrOpener.postMessage({sharedStorageFetchStatus: error.message}, '*');
+});
+fetch('${fetchUrl}', {sharedStorageWritable: true})
+  .then(response => response.text())
+  .then(htmlContent => {
+    innerFrame.srcdoc = htmlContent;
+    document.body.appendChild(innerFrame);
+  })
+  .catch(error => {
+    parentOrOpener.postMessage({sharedStorageFetchStatus: error.name},
+                                "*");
+  });
+`;
+
+      const dataURL = 'data:text/html;base64,'
+        + btoa(unescape('%3Chtml%3E%3Cbody%3E%3Cscript%3E'
+                        + encodeURIComponent(fetchCode) +
+                        '%3C%2Fscript%3E%3C%2Fbody%3E%3C%2Fhtml%3E'));
+      frame.src = dataURL;
+      document.body.appendChild(frame);
+
+      const result = await promise;
+      assert_equals(result, "TypeError");
+      await verifyKeyNotFoundForOrigin('hello', origin);
+
+    }, 'shared storage fetch request disallowed in opaque origin from data URL');
+  </script>
+</body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-sandboxed-frame.tentative.https.html b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-sandboxed-frame.tentative.https.html
index de935b22fe0..cb0f8fb7c81 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-sandboxed-frame.tentative.https.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-fetch-request-in-sandboxed-frame.tentative.https.html
@@ -79,7 +79,7 @@
         /*key=*/'c',
         /*value=*/'d',
         /*sandbox_flags=*/'allow-scripts',
-        /*expect_success=*/false);
+        /*expect_success=*/true);
     }, 'test sharedStorageWritable fetch request in sandboxed iframe without '
          + '"allow-same-origin"');
   </script>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html
new file mode 100644
index 00000000000..1833e842b00
--- /dev/null
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-iframe-request-in-data-url.tentative.https.sub.html
@@ -0,0 +1,64 @@
+<!doctype html>
+<body>
+  <script src=/resources/testharness.js></script>
+  <script src=/resources/testharnessreport.js></script>
+  <script src=/common/utils.js></script>
+  <script src=/fenced-frame/resources/utils.js></script>
+  <script src=/shared-storage/resources/util.js></script>
+  <script>
+    'use strict';
+    const origin = window.location.origin;
+    const rawSetHeader = 'set;key=hello;value=world';
+    const setHeader = encodeURIComponent(rawSetHeader);
+
+    promise_test(async t => {
+      let frame = document.createElement('iframe');
+      const promise = new Promise((resolve, reject) => {
+        window.addEventListener('message', async function handler(evt) {
+          if (evt.source === frame.contentWindow &&
+              evt.data.sharedStorageWritableHeader) {
+            document.body.removeChild(frame);
+            window.removeEventListener('message', handler);
+            resolve(evt.data.sharedStorageWritableHeader);
+          }
+        });
+        window.addEventListener('error', (error) => {
+          reject(error);
+        });
+      });
+
+      const innerUrl =
+        `${origin}\\/shared-storage\\/resources\\/shared-storage-write-`
+        + `notify-parent.py?write=${setHeader}`;
+      const innerCode = `
+let parentOrOpener = window.opener || window.parent;
+let innerFrame = document.createElement('iframe');
+window.addEventListener('message', async (evt) => {
+  if (evt.source === innerFrame.contentWindow &&
+      evt.data.sharedStorageWritableHeader) {
+    parentOrOpener.postMessage({sharedStorageWritableHeader:
+                                evt.data.sharedStorageWritableHeader}, '*');
+  }
+});
+window.addEventListener('error', (error) => {
+  parentOrOpener.postMessage({sharedStorageWritableHeader: error.message}, '*');
+});
+innerFrame.src = '${innerUrl}';
+innerFrame.sharedStorageWritable = true;
+document.body.appendChild(innerFrame);
+`;
+
+      const dataURL = 'data:text/html;base64,'
+        + btoa(unescape('%3Chtml%3E%3Cbody%3E%3Cscript%3E'
+                        + encodeURIComponent(innerCode) +
+                        '%3C%2Fscript%3E%3C%2Fbody%3E%3C%2Fhtml%3E'));
+      frame.src = dataURL;
+      document.body.appendChild(frame);
+
+      const result = await promise;
+      assert_equals(result, "NO_SHARED_STORAGE_WRITABLE_HEADER");
+      await verifyKeyNotFoundForOrigin('hello', origin);
+
+    }, 'shared storage iframe request disallowed in opaque origin from data URL');
+  </script>
+</body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included-bytes.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included-bytes.tentative.https.sub.html
index b358e87e5cd..154cd5ba48e 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included-bytes.tentative.https.sub.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included-bytes.tentative.https.sub.html
@@ -11,29 +11,29 @@
     const crossOrigin = 'https://{{domains[www]}}:{{ports[https][0]}}';
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: ':8J+YgA==:', value: ':4p2k:',
         hasSharedStorageWritableAttribute: true,
         isSameOrigin: true,
       });
-      promise.then((img) => {
-        verifyKeyValueForOrigin('😀', '❤', sameOrigin);
-        deleteKeyForOrigin('😀', sameOrigin);
-        t.done();
-      });
+
+      await verifyKeyValueForOrigin(String.fromCharCode(0xD83D, 0xDE00),
+                                    String.fromCharCode(0x2764),
+                                    sameOrigin);
+      await deleteKeyForOrigin(String.fromCharCode(0xD83D, 0xDE00), sameOrigin);
     }, 'test <img sharedstoragewritable src=[url]> via JS for same origin img with bytestring');
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: ':8J+MjQ==:', value: ':8J+PgQ==:',
         hasSharedStorageWritableAttribute: true,
         isSameOrigin: false,
       });
-      promise.then((img) => {
-        verifyKeyValueForOrigin('🌍', '🏁', crossOrigin);
-        deleteKeyForOrigin('🌍', crossOrigin);
-        t.done();
-      });
+
+      await verifyKeyValueForOrigin(String.fromCharCode(0xD83C, 0xDF0D),
+                                    String.fromCharCode(0xD83C, 0xDFC1),
+                                    crossOrigin);
+      await deleteKeyForOrigin(String.fromCharCode(0xD83C, 0xDF0D), crossOrigin);
     }, 'test <img sharedstoragewritable src=[url]> via JS for cross origin img with bytestring');
   </script>
 </body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included.tentative.https.sub.html
index 3e054146de8..65d8ee22d76 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included.tentative.https.sub.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-included.tentative.https.sub.html
@@ -11,29 +11,25 @@
     const crossOrigin = 'https://{{domains[www]}}:{{ports[https][0]}}';
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: 'a', value: 'b',
         hasSharedStorageWritableAttribute: true,
         isSameOrigin: true,
       });
-      promise.then((img) => {
-        verifyKeyValueForOrigin('a', 'b', sameOrigin);
-        deleteKeyForOrigin('a', sameOrigin);
-        t.done();
-      });
+
+      await verifyKeyValueForOrigin('a', 'b', sameOrigin);
+      await deleteKeyForOrigin('a', sameOrigin);
     }, 'test <img sharedstoragewritable src=[url]> via JS for same origin img');
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: 'c', value: 'd',
         hasSharedStorageWritableAttribute: true,
         isSameOrigin: false,
       });
-      promise.then((img) => {
-        verifyKeyValueForOrigin('c', 'd', crossOrigin);
-        deleteKeyForOrigin('d', crossOrigin);
-        t.done();
-      });
+
+      await verifyKeyValueForOrigin('c', 'd', crossOrigin);
+      await deleteKeyForOrigin('d', crossOrigin);
     }, 'test <img sharedstoragewritable src=[url]> via JS for cross origin img');
   </script>
 </body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-not-included.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-not-included.tentative.https.sub.html
index 56badca311b..c35a29fb52e 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-not-included.tentative.https.sub.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-img-idl-attribute-not-included.tentative.https.sub.html
@@ -11,27 +11,23 @@
     const crossOrigin = 'https://{{domains[www]}}:{{ports[https][0]}}';
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: 'f', value: 'g',
         hasSharedStorageWritableAttribute: false,
         isSameOrigin: true,
       });
-      promise.then((img) => {
-        verifyKeyNotFoundForOrigin('f', sameOrigin);
-        t.done();
-      });
+
+      await verifyKeyNotFoundForOrigin('f', sameOrigin);
     }, 'test <img src=[url]> via JS for same origin img');
 
     promise_test(async t => {
-      const promise =  loadSharedStorageImage({
+      await loadSharedStorageImage({
         key: 'h', value: 'i',
         hasSharedStorageWritableAttribute: false,
         isSameOrigin: false,
       });
-      promise.then((img) => {
-        verifyKeyNotFoundForOrigin('h', crossOrigin);
-        t.done();
-      });
+
+      await verifyKeyNotFoundForOrigin('h', crossOrigin);
     }, 'test <img src=[url]> via JS for cross origin img');
   </script>
 </body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-data-url.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-data-url.tentative.https.sub.html
new file mode 100644
index 00000000000..75d6b514a82
--- /dev/null
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-data-url.tentative.https.sub.html
@@ -0,0 +1,62 @@
+<!doctype html>
+<body>
+  <script src=/resources/testharness.js></script>
+  <script src=/resources/testharnessreport.js></script>
+  <script src=/common/utils.js></script>
+  <script src=/fenced-frame/resources/utils.js></script>
+  <script src=/shared-storage/resources/util.js></script>
+  <script>
+    'use strict';
+    const origin = window.location.origin;
+    const rawSetHeader = 'set;key=hello;value=world';
+    const setHeader = encodeURIComponent(rawSetHeader);
+
+    promise_test(async t => {
+      let frame = document.createElement('iframe');
+      const promise = new Promise((resolve, reject) => {
+        window.addEventListener('message', async function handler(evt) {
+          if (evt.source === frame.contentWindow &&
+              evt.data.sharedStorageWritableLoadStatus) {
+            document.body.removeChild(frame);
+            window.removeEventListener('message', handler);
+            resolve(evt.data.sharedStorageWritableLoadStatus);
+          }
+        });
+        window.addEventListener('error', (error) => {
+          reject(error);
+        });
+      });
+
+      const imageUrl =
+        `${origin}\\/shared-storage\\/resources\\/shared-storage-writable-`
+        + `pixel-write.png?write=${setHeader}`;
+      const innerCode = `
+let parentOrOpener = window.opener || window.parent;
+let image = document.createElement('img');
+window.addEventListener('load', async (evt) => {
+  parentOrOpener.postMessage({sharedStorageWritableLoadStatus:
+                              'loaded'}, '*');
+});
+window.addEventListener('error', (error) => {
+  parentOrOpener.postMessage({sharedStorageWritableLoadStatus: error.message},
+                             '*');
+});
+image.src = '${imageUrl}';
+image.sharedStorageWritable = true;
+document.body.appendChild(image);
+`;
+
+      const dataURL = 'data:text/html;base64,'
+        + btoa(unescape('%3Chtml%3E%3Cbody%3E%3Cscript%3E'
+                        + encodeURIComponent(innerCode) +
+                        '%3C%2Fscript%3E%3C%2Fbody%3E%3C%2Fhtml%3E'));
+      frame.src = dataURL;
+      document.body.appendChild(frame);
+
+      const result = await promise;
+      assert_equals(result, "loaded");
+      await verifyKeyNotFoundForOrigin('hello', origin);
+
+    }, 'shared storage iframe request disallowed in opaque origin from data URL');
+  </script>
+</body>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-sandboxed-frame.tentative.https.html b/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-sandboxed-frame.tentative.https.html
index a901500d66a..8e33c68e8ca 100644
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-sandboxed-frame.tentative.https.html
+++ b/tests/wpt/tests/shared-storage/shared-storage-writable-img-request-in-sandboxed-frame.tentative.https.html
@@ -72,7 +72,7 @@
         /*key=*/'c',
         /*value=*/'d',
         /*sandbox_flags=*/'allow-scripts',
-        /*expect_success=*/false);
+        /*expect_success=*/true);
     }, 'test sharedStorageWritable img request in sandboxed iframe without '
          + '"allow-same-origin"');
   </script>
diff --git a/tests/wpt/tests/shared-storage/shared-storage-writable-opaque-origin.tentative.https.sub.html b/tests/wpt/tests/shared-storage/shared-storage-writable-opaque-origin.tentative.https.sub.html
deleted file mode 100644
index 4829af0e0c1..00000000000
--- a/tests/wpt/tests/shared-storage/shared-storage-writable-opaque-origin.tentative.https.sub.html
+++ /dev/null
@@ -1,41 +0,0 @@
-<!doctype html>
-<body>
-  <script src=/resources/testharness.js></script>
-  <script src=/resources/testharnessreport.js></script>
-  <script>
-    'use strict';
-    const rawSetHeader = 'set;key=hello;value=world';
-    const setHeader = encodeURIComponent(rawSetHeader);
-
-    promise_test(async t => {
-      const fetchUrl =
-        `/shared-storage/resources/shared-storage-write.py?write=${setHeader}`;
-      const fetchCode =
-        `try {
-           new Request(fetchUrl,{sharedStorageWritable: true});
-         } catch (e) {
-           assert_equals(e.name, 'TypeError');
-           assert_equals(e.message, "Failed to construct 'Request': "
-                      + "sharedStorageWritable: sharedStorage operations "
-                      + "are not available for opaque origins.");
-           return;
-         }
-         assert_unreached("did not catch an error");`
-
-      const dataURL = 'data:text/javascript;base64,'
-        + btoa(unescape(encodeURIComponent(fetchCode)));
-      let frame = document.createElement('iframe');
-      frame.src = dataURL;
-      const promise = new Promise((resolve, reject) => {
-       frame.addEventListener('load', () => {
-          resolve();
-        });
-        frame.addEventListener('error', () => {
-          reject(new Error('Navigation failed'));
-        });
-      });
-      document.body.appendChild(frame);
-      await promise;
-    }, 'shared storage fetch request disallowed for opaque origin');
-  </script>
-</body>
diff --git a/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html b/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html
index 61f9e420fde..9cf136db26a 100644
--- a/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html
+++ b/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/prefetch-single.https.html
@@ -8,6 +8,7 @@
 <script src="../../resources/utils.js"></script>
 <script src="../resources/utils.sub.js"></script>
 <script src="/common/subset-tests.js"></script>
+<script src="test-inputs.js"></script>
 
 <meta name="variant" content="?1-1">
 <meta name="variant" content="?2-2">
@@ -43,17 +44,6 @@
 <script>
   setup(() => assertSpeculationRulesIsSupported());
 
-  function addNoVarySearchHeaderUsingPipe(url, value){
-    // Use server pipes https://web-platform-tests.org/writing-tests/server-pipes.html
-    // to populate No-Vary-Search response header.
-    // The "," and ")" characters need to be escaped by using backslash
-    // (see https://web-platform-tests.org/writing-tests/server-pipes.html).
-    // E.g. params=("a") becomes params=("a"\), params=("a"),key-order becomes
-    // params=("a"\)\,key-order etc.
-    url.searchParams.append("pipe",
-      `header(No-Vary-Search,${value.replaceAll(/[,)]/g, '\\$&')})`);
-  }
-
   /*
     remoteAgent: the RemoteContext instance used to communicate between the
       test and the window where prefetch/navigation is happening
@@ -67,7 +57,7 @@
     const navigateToUrl = new URL(nextUrl);
     // Add query params to the url to be prefetched.
     const additionalPrefetchedUrlSearchParams = new URLSearchParams(prefetchQuery);
-    addNoVarySearchHeaderUsingPipe(nextUrl, noVarySearchHeaderValue);
+    addNoVarySearchHeaderUsingPipe(additionalPrefetchedUrlSearchParams, noVarySearchHeaderValue);
     additionalPrefetchedUrlSearchParams.forEach((value, key) => {
       nextUrl.searchParams.append(key, value);
     });
@@ -76,14 +66,14 @@
 
     // Add new query params to navigateToUrl to match No-Vary-Search test case.
     const additionalNavigateToUrlSearchParams = new URLSearchParams(navigateQuery);
-    addNoVarySearchHeaderUsingPipe(navigateToUrl, noVarySearchHeaderValue);
+    addNoVarySearchHeaderUsingPipe(additionalNavigateToUrlSearchParams, noVarySearchHeaderValue);
     additionalNavigateToUrlSearchParams.forEach((value, key) => {
       navigateToUrl.searchParams.append(key, value);
     });
     await remoteAgent.navigate(navigateToUrl);
   }
 
-  function prefetch_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUsePrefetch){
+  function prefetch_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUse){
     promise_test(async t => {
       const agent = await spawnWindow(t, {});
       await prefetchAndNavigate(agent,
@@ -91,7 +81,7 @@
         prefetchQuery,
         navigateQuery);
 
-      if(shouldUsePrefetch){
+      if(shouldUse){
         assert_prefetched(await agent.getRequestHeaders(),
           "Navigation didn't use the prefetched response!");
       }
@@ -102,214 +92,10 @@
      }, description);
   }
 
-  // Test inputs:
-  // - description: a description of the test.
-  // - no-vary-search: No-Vary-Search header value for the response.
-  // - prefetch-query: added to query part of prefetch-executor when prefetching
-  // - navigate-query: added to query part of prefetch-executor when navigating
-  // - shouldUsePrefetch: if the test case expects the prefetched entry to be
-  //   used or not.
-  [{description:"Use prefetched response as query parameter b has the same value.",
-    noVarySearch: 'params=("a")',
-    prefetchQuery: "a=2&b=3",
-    navigateQuery: "b=3",
-    shouldUsePrefetch: true},
-
-   {description:"Don't use prefetched response as query parameter b has different value.",
-    noVarySearch: 'params("a")',
-    prefetchQuery: "a=2&b=3",
-    navigateQuery: "b=2",
-    shouldUsePrefetch: false},
-
-   {description:"Use prefetched response as the URLs do not vary by a and b.",
-    noVarySearch: 'params=("a" "b")',
-    prefetchQuery: "a=2&b=3",
-    navigateQuery: "b=2",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as the URLs do not vary on any query parameters.",
-    noVarySearch: "params",
-    prefetchQuery: "a=2&b=3",
-    navigateQuery: "b=4&c=5",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as the URLs do not vary on any query parameters.",
-    noVarySearch: "params",
-    prefetchQuery: "",
-    navigateQuery: "b=4&c=5",
-    shouldUsePrefetch: true},
-
-   {description:"Don't use prefetched response as the URLs have different value for c.",
-    noVarySearch: "key-order",
-    prefetchQuery: "c=4&b=3&a=2",
-    navigateQuery: "a=2&c=5&b=3",
-    shouldUsePrefetch: false},
-
-   {description:"Don't use prefetched response as the URLs have the values in different order for a.",
-    noVarySearch: "key-order",
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
-    navigateQuery: "d=6&a=4&b=5&b=3&c=5&a=3",
-    shouldUsePrefetch: false},
-
-   {description:"Use prefetched response as the URLs have the same values for a.",
-    noVarySearch: "key-order",
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
-    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as the URLs have the same values for a.",
-    noVarySearch: "key-order=?1",
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
-    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
-    shouldUsePrefetch: true},
-
-   {description:"Don't use prefetched response as key-order is set to false and the URLs are not identical.",
-    noVarySearch: "key-order=?0",
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
-    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
-    shouldUsePrefetch: false},
-
-   {description:"Use prefetched response as query parameter c can be ignored.",
-    noVarySearch: 'params=("c")',
-    prefetchQuery: "a=2&b=2&c=5",
-    navigateQuery: "a=2&c=3&b=2",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as query parameter a can be ignored.",
-    noVarySearch: 'params=("a")',
-    prefetchQuery: "a=2",
-    navigateQuery: "",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as query parameter a can be ignored.",
-    noVarySearch: 'params=("a")',
-    prefetchQuery: "",
-    navigateQuery: "a=2",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as all query parameters except c can be ignored.",
-    noVarySearch: 'params, except=("c")',
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=3",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as all query parameters except c can be ignored." +
-                " Only the last except matters.",
-    noVarySearch: 'params, except=("b"), except=("c")',
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=3",
-    shouldUsePrefetch: true},
-
-   {description:"Don't use prefetched response as even though all query parameters" +
-                " except c can be ignored, c has different value.",
-    noVarySearch: 'params, except=("c")',
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=5",
-    shouldUsePrefetch: false},
-
-   {description:"Use prefetched response as even though all query parameters" +
-                " except c and d can be ignored, c value matches and d value matches.",
-    noVarySearch: 'params, except=("c" "d")',
-    prefetchQuery: "b=5&a=3&d=6&c=5",
-    navigateQuery: "d=6&a=1&b=2&c=5",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as even though all query parameters except" +
-                " c and d can be ignored, c value matches and d value matches." +
-                " Some query parameters to be ignored appear multiple times in the query.",
-    noVarySearch: 'params, except=("c" "d")',
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5",
-    navigateQuery: "d=6&a=1&a=2&b=2&b=3&c=5",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as all query parameters except c can be ignored." +
-                " Allow extension via parameters.",
-    noVarySearch: 'params, except=("c";unknown)',
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=3",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as query parameter c can be ignored." +
-                " Allow extension via parameters.",
-    noVarySearch: 'params=("c";unknown)',
-    prefetchQuery: "a=2&b=2&c=5",
-    navigateQuery: "a=2&c=3&b=2",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as the URLs have the values in different order for a." +
-                " Allow extension via parameters.",
-    noVarySearch: "key-order;unknown",
-    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
-    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as the URLs do not vary on any query parameters." +
-                " Allow extension via parameters.",
-    noVarySearch: "params;unknown",
-    prefetchQuery: "",
-    navigateQuery: "b=4&c=5",
-    shouldUsePrefetch: true},
-
-   {description:"Use prefetched response as all query parameters except c can be ignored." +
-                " Allow extension via parameters.",
-    noVarySearch: 'params;unknown, except=("c");unknown',
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=3",
-    shouldUsePrefetch: true},
-
-   {description:"Don't use the prefetched URL. Empty No-Vary-Search means default URL variance." +
-                " The prefetched and the navigated URLs have to be the same.",
-    noVarySearch: "",
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "a=1&b=2&c=3",
-    shouldUsePrefetch: false},
-
-   {description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
-                " The prefetched and the navigated URLs have to be the same.",
-    noVarySearch: "",
-    prefetchQuery: "b=5&a=3&d=6&c=3",
-    navigateQuery: "b=5&a=3&d=6&c=3",
-    shouldUsePrefetch: true},
-
-   {description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
-                " The prefetched and the navigated URLs have to be the same.",
-    noVarySearch: "",
-    prefetchQuery: "",
-    navigateQuery: "",
-    shouldUsePrefetch: true},
-
-   {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
-                " Don't vary the response on the non-ASCII key.",
-    noVarySearch: 'params=("%C2%A2")',
-    prefetchQuery: "¢=3",
-    navigateQuery: "¢=4",
-    shouldUsePrefetch: true},
-
-    {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
-                 " Don't vary the response on the non-ASCII key.",
-    noVarySearch: 'params=("%C2%A2")',
-    prefetchQuery: "a=2&¢=3",
-    navigateQuery: "¢=4&a=2",
-    shouldUsePrefetch: true},
-
-    {description:"Don't use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
-                 " Vary the response on the non-ASCII key.",
-    noVarySearch: 'params, except=("%C2%A2")',
-    prefetchQuery: "¢=3",
-    navigateQuery: "¢=4",
-    shouldUsePrefetch: false},
-
-    {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
-                 " Vary the response on the non-ASCII key.",
-    noVarySearch: 'params, except=("%C2%A2")',
-    prefetchQuery: "¢=3&a=4",
-    navigateQuery: "a=5&¢=3",
-    shouldUsePrefetch: true},
-
-  ].forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUsePrefetch}) => {
+  test_inputs.forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUse}) => {
     subsetTest(prefetch_no_vary_search_test,
       description, noVarySearch, prefetchQuery, navigateQuery,
-      shouldUsePrefetch);
+      shouldUse);
   });
 
 </script>
diff --git a/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/test-inputs.js b/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/test-inputs.js
new file mode 100644
index 00000000000..7fd2e52b912
--- /dev/null
+++ b/tests/wpt/tests/speculation-rules/prefetch/no-vary-search/test-inputs.js
@@ -0,0 +1,215 @@
+function addNoVarySearchHeaderUsingPipe(searchParams, headerValue){
+  // Use server pipes https://web-platform-tests.org/writing-tests/server-pipes.html
+  // to populate No-Vary-Search response header.
+  // The "," and ")" characters need to be escaped by using backslash
+  // (see https://web-platform-tests.org/writing-tests/server-pipes.html).
+  // E.g. params=("a") becomes params=("a"\), params=("a"),key-order becomes
+  // params=("a"\)\,key-order etc.
+  searchParams.append(
+      "pipe", `header(No-Vary-Search,${headerValue.replaceAll(/[,)]/g, '\\$&')})`);
+}
+
+// Test inputs:
+// - description: a description of the test.
+// - noVarySearch: No-Vary-Search header value for the response.
+// - prefetchQuery: added to query part of prefetch-executor when prefetching
+// - navigateQuery: added to query part of prefetch-executor when navigating
+// - shouldUse: if the test case expects the prefetched entry to be used or not.
+const test_inputs = [
+   {description:"Use prefetched response as query parameter b has the same value.",
+    noVarySearch: 'params=("a")',
+    prefetchQuery: "a=2&b=3",
+    navigateQuery: "b=3",
+    shouldUse: true},
+
+   {description:"Don't use prefetched response as query parameter b has different value.",
+    noVarySearch: 'params("a")',
+    prefetchQuery: "a=2&b=3",
+    navigateQuery: "b=2",
+    shouldUse: false},
+
+   {description:"Use prefetched response as the URLs do not vary by a and b.",
+    noVarySearch: 'params=("a" "b")',
+    prefetchQuery: "a=2&b=3",
+    navigateQuery: "b=2",
+    shouldUse: true},
+
+   {description:"Use prefetched response as the URLs do not vary on any query parameters.",
+    noVarySearch: "params",
+    prefetchQuery: "a=2&b=3",
+    navigateQuery: "b=4&c=5",
+    shouldUse: true},
+
+   {description:"Use prefetched response as the URLs do not vary on any query parameters.",
+    noVarySearch: "params",
+    prefetchQuery: "",
+    navigateQuery: "b=4&c=5",
+    shouldUse: true},
+
+   {description:"Don't use prefetched response as the URLs have different value for c.",
+    noVarySearch: "key-order",
+    prefetchQuery: "c=4&b=3&a=2",
+    navigateQuery: "a=2&c=5&b=3",
+    shouldUse: false},
+
+   {description:"Don't use prefetched response as the URLs have the values in different order for a.",
+    noVarySearch: "key-order",
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
+    navigateQuery: "d=6&a=4&b=5&b=3&c=5&a=3",
+    shouldUse: false},
+
+   {description:"Use prefetched response as the URLs have the same values for a.",
+    noVarySearch: "key-order",
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
+    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
+    shouldUse: true},
+
+   {description:"Use prefetched response as the URLs have the same values for a.",
+    noVarySearch: "key-order=?1",
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
+    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
+    shouldUse: true},
+
+   {description:"Don't use prefetched response as key-order is set to false and the URLs are not identical.",
+    noVarySearch: "key-order=?0",
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
+    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
+    shouldUse: false},
+
+   {description:"Use prefetched response as query parameter c can be ignored.",
+    noVarySearch: 'params=("c")',
+    prefetchQuery: "a=2&b=2&c=5",
+    navigateQuery: "a=2&c=3&b=2",
+    shouldUse: true},
+
+   {description:"Use prefetched response as query parameter a can be ignored.",
+    noVarySearch: 'params=("a")',
+    prefetchQuery: "a=2",
+    navigateQuery: "",
+    shouldUse: true},
+
+   {description:"Use prefetched response as query parameter a can be ignored.",
+    noVarySearch: 'params=("a")',
+    prefetchQuery: "",
+    navigateQuery: "a=2",
+    shouldUse: true},
+
+   {description:"Use prefetched response as all query parameters except c can be ignored.",
+    noVarySearch: 'params, except=("c")',
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=3",
+    shouldUse: true},
+
+   {description:"Use prefetched response as all query parameters except c can be ignored." +
+                " Only the last except matters.",
+    noVarySearch: 'params, except=("b"), except=("c")',
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=3",
+    shouldUse: true},
+
+   {description:"Don't use prefetched response as even though all query parameters" +
+                " except c can be ignored, c has different value.",
+    noVarySearch: 'params, except=("c")',
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=5",
+    shouldUse: false},
+
+   {description:"Use prefetched response as even though all query parameters" +
+                " except c and d can be ignored, c value matches and d value matches.",
+    noVarySearch: 'params, except=("c" "d")',
+    prefetchQuery: "b=5&a=3&d=6&c=5",
+    navigateQuery: "d=6&a=1&b=2&c=5",
+    shouldUse: true},
+
+   {description:"Use prefetched response as even though all query parameters except" +
+                " c and d can be ignored, c value matches and d value matches." +
+                " Some query parameters to be ignored appear multiple times in the query.",
+    noVarySearch: 'params, except=("c" "d")',
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5",
+    navigateQuery: "d=6&a=1&a=2&b=2&b=3&c=5",
+    shouldUse: true},
+
+   {description:"Use prefetched response as all query parameters except c can be ignored." +
+                " Allow extension via parameters.",
+    noVarySearch: 'params, except=("c";unknown)',
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=3",
+    shouldUse: true},
+
+   {description:"Use prefetched response as query parameter c can be ignored." +
+                " Allow extension via parameters.",
+    noVarySearch: 'params=("c";unknown)',
+    prefetchQuery: "a=2&b=2&c=5",
+    navigateQuery: "a=2&c=3&b=2",
+    shouldUse: true},
+
+   {description:"Use prefetched response as the URLs have the values in different order for a." +
+                " Allow extension via parameters.",
+    noVarySearch: "key-order;unknown",
+    prefetchQuery: "b=5&a=3&a=4&d=6&c=5&b=3",
+    navigateQuery: "d=6&a=3&b=5&b=3&c=5&a=4",
+    shouldUse: true},
+
+   {description:"Use prefetched response as the URLs do not vary on any query parameters." +
+                " Allow extension via parameters.",
+    noVarySearch: "params;unknown",
+    prefetchQuery: "",
+    navigateQuery: "b=4&c=5",
+    shouldUse: true},
+
+   {description:"Use prefetched response as all query parameters except c can be ignored." +
+                " Allow extension via parameters.",
+    noVarySearch: 'params;unknown, except=("c");unknown',
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=3",
+    shouldUse: true},
+
+   {description:"Don't use the prefetched URL. Empty No-Vary-Search means default URL variance." +
+                " The prefetched and the navigated URLs have to be the same.",
+    noVarySearch: "",
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "a=1&b=2&c=3",
+    shouldUse: false},
+
+   {description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
+                " The prefetched and the navigated URLs have to be the same.",
+    noVarySearch: "",
+    prefetchQuery: "b=5&a=3&d=6&c=3",
+    navigateQuery: "b=5&a=3&d=6&c=3",
+    shouldUse: true},
+
+   {description:"Use the prefetched URL. Empty No-Vary-Search means default URL variance." +
+                " The prefetched and the navigated URLs have to be the same.",
+    noVarySearch: "",
+    prefetchQuery: "",
+    navigateQuery: "",
+    shouldUse: true},
+
+   {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
+                " Don't vary the response on the non-ASCII key.",
+    noVarySearch: 'params=("%C2%A2")',
+    prefetchQuery: "¢=3",
+    navigateQuery: "¢=4",
+    shouldUse: true},
+
+    {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
+                 " Don't vary the response on the non-ASCII key.",
+    noVarySearch: 'params=("%C2%A2")',
+    prefetchQuery: "a=2&¢=3",
+    navigateQuery: "¢=4&a=2",
+    shouldUse: true},
+
+    {description:"Don't use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
+                 " Vary the response on the non-ASCII key.",
+    noVarySearch: 'params, except=("%C2%A2")',
+    prefetchQuery: "¢=3",
+    navigateQuery: "¢=4",
+    shouldUse: false},
+
+    {description:"Use the prefetched URL. Non-ASCII key - 2 UTF-8 code units." +
+                 " Vary the response on the non-ASCII key.",
+    noVarySearch: 'params, except=("%C2%A2")',
+    prefetchQuery: "¢=3&a=4",
+    navigateQuery: "a=5&¢=3",
+    shouldUse: true},
+];
diff --git a/tests/wpt/tests/speculation-rules/prerender/fetch-blob.html b/tests/wpt/tests/speculation-rules/prerender/fetch-blob.html
index 3158b0f1a06..37577f3b5bc 100644
--- a/tests/wpt/tests/speculation-rules/prerender/fetch-blob.html
+++ b/tests/wpt/tests/speculation-rules/prerender/fetch-blob.html
@@ -15,10 +15,9 @@
 setup(() => assertSpeculationRulesIsSupported());
 
 promise_test(async t => {
-  const opt = {};
-  const init_opt = {};
   const rule_extras = {'target_hint': getTargetHint()};
-  const {exec} = await create_prerendered_page(t, opt, init_opt, rule_extras);
+  const {exec} = await create_prerendered_page(
+      t, undefined, undefined, rule_extras);
   const result = await exec(async () => {
     const blob = await (await fetch('cache.txt')).blob();
     const reader = new FileReader();
diff --git a/tests/wpt/tests/speculation-rules/prerender/local-storage.html b/tests/wpt/tests/speculation-rules/prerender/local-storage.html
index 73f760cfb08..2f7428746cc 100644
--- a/tests/wpt/tests/speculation-rules/prerender/local-storage.html
+++ b/tests/wpt/tests/speculation-rules/prerender/local-storage.html
@@ -30,12 +30,11 @@ promise_test(async t => {
     }, { once: true });
   });
 
-  const opt = {};
-  const init_opt = {};
   const rule_extras = {'target_hint': getTargetHint()};
 
   window.localStorage.setItem('initial', uid1);
-  const {exec} = await create_prerendered_page(t, opt, init_opt, rule_extras);
+  const {exec} = await create_prerendered_page(
+      t, undefined, undefined, rule_extras);
   const result = await exec(uid2 => {
     window.localStorage.setItem('prerender', uid2);
     return window.localStorage.getItem('initial');
diff --git a/tests/wpt/tests/speculation-rules/prerender/no-vary-search.https.html b/tests/wpt/tests/speculation-rules/prerender/no-vary-search.https.html
new file mode 100644
index 00000000000..61d0d52b5fa
--- /dev/null
+++ b/tests/wpt/tests/speculation-rules/prerender/no-vary-search.https.html
@@ -0,0 +1,80 @@
+<!DOCTYPE html>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+<script src="/common/utils.js"></script>
+<script src="/common/dispatcher/dispatcher.js"></script>
+<script src="../resources/utils.js"></script>
+<script src="resources/utils.js"></script>
+<script src="/common/subset-tests.js"></script>
+<script src="../prefetch/no-vary-search/test-inputs.js"></script>
+
+<meta name="variant" content="?1-1">
+<meta name="variant" content="?2-2">
+<meta name="variant" content="?3-3">
+<meta name="variant" content="?4-4">
+<meta name="variant" content="?5-5">
+<meta name="variant" content="?6-6">
+<meta name="variant" content="?7-7">
+<meta name="variant" content="?8-8">
+<meta name="variant" content="?9-9">
+<meta name="variant" content="?10-10">
+<meta name="variant" content="?11-11">
+<meta name="variant" content="?12-12">
+<meta name="variant" content="?13-13">
+<meta name="variant" content="?14-14">
+<meta name="variant" content="?15-15">
+<meta name="variant" content="?16-16">
+<meta name="variant" content="?17-17">
+<meta name="variant" content="?18-18">
+<meta name="variant" content="?19-19">
+<meta name="variant" content="?20-20">
+<meta name="variant" content="?21-21">
+<meta name="variant" content="?22-22">
+<meta name="variant" content="?23-23">
+<meta name="variant" content="?24-24">
+<meta name="variant" content="?25-25">
+<meta name="variant" content="?26-26">
+<meta name="variant" content="?27-27">
+<meta name="variant" content="?28-28">
+<meta name="variant" content="?29-29">
+<meta name="variant" content="?30-last">
+
+<body></body>
+<script>
+setup(() => assertSpeculationRulesIsSupported());
+
+function prerender_no_vary_search_test(description, noVarySearch, prefetchQuery, navigateQuery, shouldUse) {
+  promise_test(async t => {
+    const prefetchQueryParams = new URLSearchParams(prefetchQuery);
+    const navigateQueryParams = new URLSearchParams(navigateQuery);
+
+    addNoVarySearchHeaderUsingPipe(prefetchQueryParams, noVarySearch);
+    addNoVarySearchHeaderUsingPipe(navigateQueryParams, noVarySearch);
+
+    const params = {
+      'prerendering': prefetchQueryParams,
+      'activating': navigateQueryParams
+    };
+
+    const {tryToActivate, getNetworkRequestCount} =
+        await create_prerendered_page(t, params);
+
+    if (shouldUse) {
+      // The request should be sent only one time for prerendering.
+      assert_equals(await tryToActivate(), 'activated');
+      assert_equals(await getNetworkRequestCount(), '1');
+    } else {
+      // The request should be sent twice for prerendering and real navigation
+      // that doesn't activate the prerendered page.
+      assert_equals(await tryToActivate(), 'discarded');
+      assert_equals(await getNetworkRequestCount(), '2');
+    }
+  }, description);
+}
+
+test_inputs.forEach(({description, noVarySearch, prefetchQuery, navigateQuery, shouldUse}) => {
+  subsetTest(prerender_no_vary_search_test, description, noVarySearch, prefetchQuery, navigateQuery, shouldUse);
+});
+</script>
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/utils.js b/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
index bc1bc5911eb..3533c77a86d 100644
--- a/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
@@ -196,13 +196,20 @@ function createFrame(url) {
     });
 }
 
-// `opt` provides additional query params for the prerendered URL.
-// `init_opt` provides additional query params for the page that triggers
-// the prerender. If `init_opt.prefetch` is set to true, prefetch is also
-// triggered before the prerendering.
-// `rule_extras` provides additional parameters for the speculation rule used
-// to trigger prerendering.
-async function create_prerendered_page(t, opt = {}, init_opt = {}, rule_extras = {}) {
+/**
+ * Creates a prerendered page.
+ * @param {Object} params - Additional query params for navigations.
+ * @param {URLSearchParams} [params.initiator] - For the page that triggers
+ *     prerendering.
+ * @param {URLSearchParams} [params.prerendering] - For prerendering navigation.
+ * @param {URLSearchParams} [params.activating] - For activating navigation.
+ * @param {Object} opt - Controls creation of prerendered pages.
+ * @param {boolean} [opt.prefetch] - When this is true, prefetch is also
+ *     triggered before prerendering.
+ * @param {Object} rule_extras - Additional params for the speculation rule used
+ *     to trigger prerendering.
+ */
+async function create_prerendered_page(t, params = {}, opt = {}, rule_extras = {}) {
   const baseUrl = '/speculation-rules/prerender/resources/exec.py';
   const init_uuid = token();
   const prerender_uuid = token();
@@ -211,46 +218,70 @@ async function create_prerendered_page(t, opt = {}, init_opt = {}, rule_extras =
   const prerender_remote = new RemoteContext(prerender_uuid);
   const discard_remote = new RemoteContext(discard_uuid);
 
-  const init_params = new URLSearchParams(baseUrl.search);
+  const init_params = new URLSearchParams();
   init_params.set('uuid', init_uuid);
-  for (const p in init_opt)
-    init_params.set(p, init_opt[p]);
+  if ('initiator' in params) {
+    for (const [key, value] of params.initiator.entries()) {
+      init_params.set(key, value);
+    }
+  }
   window.open(`${baseUrl}?${init_params.toString()}&init`, '_blank', 'noopener');
 
-  const params = new URLSearchParams(baseUrl.search);
-  params.set('uuid', prerender_uuid);
-  params.set('discard_uuid', discard_uuid);
-  for (const p in opt)
-    params.set(p, opt[p]);
-  const url = `${baseUrl}?${params.toString()}`;
+  // Construct a URL for prerendering.
+  const prerendering_params = new URLSearchParams();
+  prerendering_params.set('uuid', prerender_uuid);
+  prerendering_params.set('discard_uuid', discard_uuid);
+  if ('prerendering' in params) {
+    for (const [key, value] of params.prerendering.entries()) {
+      prerendering_params.set(key, value);
+    }
+  }
+  const prerendering_url = `${baseUrl}?${prerendering_params.toString()}`;
 
-  if (init_opt.prefetch) {
-    await init_remote.execute_script((url, rule_extras) => {
+  // Construct a URL for activation. If `params.activating` is provided, the
+  // URL is constructed with the params. Otherwise, the URL is the same as
+  // `prerendering_url`.
+  const activating_url = (() => {
+    if ('activating' in params) {
+      const activating_params = new URLSearchParams();
+      activating_params.set('uuid', prerender_uuid);
+      activating_params.set('discard_uuid', discard_uuid);
+      for (const [key, value] of params.activating.entries()) {
+        activating_params.set(key, value);
+      }
+      return `${baseUrl}?${activating_params.toString()}`;
+    } else {
+      return prerendering_url;
+    }
+  })();
+
+  if (opt.prefetch) {
+    await init_remote.execute_script((prerendering_url, rule_extras) => {
         const a = document.createElement('a');
-        a.href = url;
+        a.href = prerendering_url;
         a.innerText = 'Activate (prefetch)';
         document.body.appendChild(a);
         const rules = document.createElement('script');
         rules.type = "speculationrules";
         rules.text = JSON.stringify(
-            {prefetch: [{source: 'list', urls: [url], ...rule_extras}]});
+            {prefetch: [{source: 'list', urls: [prerendering_url], ...rule_extras}]});
         document.head.appendChild(rules);
-    }, [url, rule_extras]);
+    }, [prerendering_url, rule_extras]);
 
     // Wait for the completion of the prefetch.
     await new Promise(resolve => t.step_timeout(resolve, 3000));
   }
 
-  await init_remote.execute_script((url, rule_extras) => {
+  await init_remote.execute_script((prerendering_url, rule_extras) => {
       const a = document.createElement('a');
-      a.href = url;
+      a.href = prerendering_url;
       a.innerText = 'Activate';
       document.body.appendChild(a);
       const rules = document.createElement('script');
       rules.type = "speculationrules";
-      rules.text = JSON.stringify({prerender: [{source: 'list', urls: [url], ...rule_extras}]});
+      rules.text = JSON.stringify({prerender: [{source: 'list', urls: [prerendering_url], ...rule_extras}]});
       document.head.appendChild(rules);
-  }, [url, rule_extras]);
+  }, [prerendering_url, rule_extras]);
 
   await Promise.any([
     prerender_remote.execute_script(() => {
@@ -278,9 +309,9 @@ async function create_prerendered_page(t, opt = {}, init_opt = {}, rule_extras =
 
     const discarded = discard_remote.execute_script(() => Promise.resolve('discarded'));
 
-    init_remote.execute_script(url => {
-        location.href = url;
-    }, [url]);
+    init_remote.execute_script(activating_url => {
+        location.href = activating_url;
+    }, [activating_url]);
     return Promise.any([prerendering, discarded]);
   }
 
@@ -290,9 +321,10 @@ async function create_prerendered_page(t, opt = {}, init_opt = {}, rule_extras =
       throw new Error('Should not be prerendering at this point')
   }
 
-  // Get the number of network requests for the prerendered page URL.
+  // Get the number of network requests for exec.py. This doesn't care about
+  // differences in search params.
   async function getNetworkRequestCount() {
-    return await (await fetch(url + '&get-fetch-count')).text();
+    return await (await fetch(prerendering_url + '&get-fetch-count')).text();
   }
 
   return {
diff --git a/tests/wpt/tests/speculation-rules/prerender/response-code-non-successful.html b/tests/wpt/tests/speculation-rules/prerender/response-code-non-successful.html
index 05d997a0081..68cd505b2ba 100644
--- a/tests/wpt/tests/speculation-rules/prerender/response-code-non-successful.html
+++ b/tests/wpt/tests/speculation-rules/prerender/response-code-non-successful.html
@@ -19,11 +19,13 @@
 setup(() => assertSpeculationRulesIsSupported());
 
 const params = new URLSearchParams(window.location.search);
-const code = params.get('code');
 
 promise_test(async t => {
-  const {exec, tryToActivate} = await create_prerendered_page(t, {code});
+  // Pass the `code` search param so that a prerendered page is served with the
+  // response code.
+  const {exec, tryToActivate} =
+      await create_prerendered_page(t, {'prerendering': params});
   const result = await tryToActivate();
   assert_equals(result, 'discarded');
-},`Responses with code ${code} should be discarded`);
+},`Responses with code ${params.get('code')} should be discarded`);
 </script>
diff --git a/tests/wpt/tests/speculation-rules/prerender/response-code-successful.html b/tests/wpt/tests/speculation-rules/prerender/response-code-successful.html
index 0e8433b3b2b..eca7f38c8c3 100644
--- a/tests/wpt/tests/speculation-rules/prerender/response-code-successful.html
+++ b/tests/wpt/tests/speculation-rules/prerender/response-code-successful.html
@@ -18,11 +18,13 @@
 setup(() => assertSpeculationRulesIsSupported());
 
 const params = new URLSearchParams(window.location.search);
-const code = params.get('code');
 
 promise_test(async t => {
-  const {exec, tryToActivate} = await create_prerendered_page(t, {code});
+  // Pass the `code` search param so that a prerendered page is served with the
+  // response code.
+  const {exec, tryToActivate} =
+      await create_prerendered_page(t, {'prerendering': params});
   const result = await tryToActivate();
   assert_equals(result, 'activated');
-},`Responses with code ${code} should be activated`);
+},`Responses with code ${params.get('code')} should be activated`);
 </script>
diff --git a/tests/wpt/tests/streams/readable-streams/from.any.js b/tests/wpt/tests/streams/readable-streams/from.any.js
index 58ad4d4add1..2a4212ab890 100644
--- a/tests/wpt/tests/streams/readable-streams/from.any.js
+++ b/tests/wpt/tests/streams/readable-streams/from.any.js
@@ -51,44 +51,50 @@ const iterableFactories = [
 
   ['a sync iterable of values', () => {
     const chunks = ['a', 'b'];
-    const it = {
+    const iterator = {
       next() {
         return {
           done: chunks.length === 0,
           value: chunks.shift()
         };
-      },
-      [Symbol.iterator]: () => it
+      }
     };
-    return it;
+    const iterable = {
+      [Symbol.iterator]: () => iterator
+    };
+    return iterable;
   }],
 
   ['a sync iterable of promises', () => {
     const chunks = ['a', 'b'];
-    const it = {
+    const iterator = {
       next() {
         return chunks.length === 0 ? { done: true } : {
           done: false,
           value: Promise.resolve(chunks.shift())
         };
-      },
-      [Symbol.iterator]: () => it
+      }
     };
-    return it;
+    const iterable = {
+      [Symbol.iterator]: () => iterator
+    };
+    return iterable;
   }],
 
   ['an async iterable', () => {
     const chunks = ['a', 'b'];
-    const it = {
+    const asyncIterator = {
       next() {
         return Promise.resolve({
           done: chunks.length === 0,
           value: chunks.shift()
         })
-      },
-      [Symbol.asyncIterator]: () => it
+      }
     };
-    return it;
+    const asyncIterable = {
+      [Symbol.asyncIterator]: () => asyncIterator
+    };
+    return asyncIterable;
   }],
 
   ['a ReadableStream', () => {
@@ -186,6 +192,18 @@ test(t => {
   assert_throws_exactly(theError, () => ReadableStream.from(iterable), 'from() should re-throw the error');
 }, `ReadableStream.from ignores @@iterator if @@asyncIterator exists`);
 
+test(() => {
+  const theError = new Error('a unique string');
+  const iterable = {
+    [Symbol.asyncIterator]: null,
+    [Symbol.iterator]() {
+      throw theError
+    }
+  };
+
+  assert_throws_exactly(theError, () => ReadableStream.from(iterable), 'from() should re-throw the error');
+}, `ReadableStream.from ignores a null @@asyncIterator`);
+
 promise_test(async () => {
 
   const iterable = {
diff --git a/tests/wpt/tests/trusted-types/HTMLScriptElement-internal-slot.html b/tests/wpt/tests/trusted-types/HTMLScriptElement-internal-slot.html
index 3a4b905f462..96629c10122 100644
--- a/tests/wpt/tests/trusted-types/HTMLScriptElement-internal-slot.html
+++ b/tests/wpt/tests/trusted-types/HTMLScriptElement-internal-slot.html
@@ -7,24 +7,17 @@
 </head>
 <body>
 <script>
+  // This policy allows document.write to work as that's not relevant to what's actually being tested here.
+  trustedTypes.createPolicy('default', {createHTML: s => s});
   promise_test(t => {
-    // Setup: We create an <iframe> and trigger loading the document. We use
-    // WPTserve's ?pipe functionality to make sure it gets delivered in chunks
-    // and that parsing will be deferred.
-    var frame = document.createElement("iframe");
-    document.body.appendChild(frame);
-    frame.src = "support/HTMLScriptElement-internal-slot-support.html?pipe=trickle(200:d1)";
-
-    // This function tries to find the first <script> element in our iframe and
-    // manipulated it with DOM APIs (appendChild + createTextNode). If it
-    // doesn't find the script element then it'll just enqueue itself again
-    // in 100ms.
+    document.write(`<script>window.postMessage("first script element executed", "*");`);
     var manipulator = _ => {
-      let script = frame.contentDocument.getElementsByTagName("script")[0];
+      let script = document.body.getElementsByTagName("script")[1];
       if (script) {
-        script.appendChild(frame.contentDocument.createTextNode("/*byapi*/"));
+        script.appendChild(document.createTextNode('/*byapi*/'));
+        document.write('<\/script><script>window.parent.postMessage("second script element executed", "*");<\/script>');
       } else {
-        t.step_timeout(manipulator, 100);
+        t.step_timeout(manipulator, 50);
       }
     }
     manipulator();
diff --git a/tests/wpt/tests/trusted-types/SVGScriptElement-internal-slot.html b/tests/wpt/tests/trusted-types/SVGScriptElement-internal-slot.html
new file mode 100644
index 00000000000..0f7e4eaeaac
--- /dev/null
+++ b/tests/wpt/tests/trusted-types/SVGScriptElement-internal-slot.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <meta http-equiv="Content-Security-Policy" content="require-trusted-types-for 'script'">
+</head>
+<body>
+<script>
+  // This policy allows document.write to work as that's not relevant to what's actually being tested here.
+  trustedTypes.createPolicy('default', {createHTML: s => s});
+  promise_test(t => {
+    document.write(`<svg><script>window.postMessage("first script element executed", "*");`);
+    var manipulator = _ => {
+      let script = document.body.getElementsByTagName("script")[1];
+      if (script) {
+        script.appendChild(document.createTextNode('/*byapi*/'));
+        document.write('<\/script><script>window.parent.postMessage("second script element executed", "*");<\/script><\/svg>');
+      } else {
+        t.step_timeout(manipulator, 50);
+      }
+    }
+    manipulator();
+
+    // Now we'll wait for the postMessages to arrive. We expect the iframe's
+    // first message to be blocked by Trusted Types, since the manipulator
+    // above should have manipulated it (while loading). The second one should
+    // pass.
+    return new Promise((resolve, reject) => {
+      window.addEventListener("message", e => {
+        if (e.data.includes("first")) {
+          reject("First message should have been blocked: " + e.data);
+        } else if (e.data.includes("second")) {
+          resolve();
+        } else {
+          reject("Unknown message: " + e.data);
+        }
+      });
+    });
+  }, "Test TT application when manipulating <script> elements during loading.");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none-name.html b/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none-name.html
new file mode 100644
index 00000000000..769861e027a
--- /dev/null
+++ b/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none-name.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js" ></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/helper.sub.js"></script>
+<meta http-equiv="Content-Security-Policy" content="trusted-types 'none' 'none' SomeName">
+<body>
+<script>
+  test(t => {
+    window.trustedTypes.createPolicy('SomeName', { createHTML: s => s } );
+  }, "Can create policy with name 'SomeName'");
+
+  test(t => {
+    assert_throws_js(TypeError, _ => {
+      window.trustedTypes.createPolicy('default', { createHTML: s => s } );
+    });
+  }, "Cannot create policy with name 'default' - policy creation throws");
+</script>
diff --git a/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none.html b/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none.html
new file mode 100644
index 00000000000..81f8185ff86
--- /dev/null
+++ b/tests/wpt/tests/trusted-types/TrustedTypePolicyFactory-createPolicy-cspTests-none-none.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js" ></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/helper.sub.js"></script>
+<!-- This should behave the same as one `none` case and the case when no policy specified. -->
+<meta http-equiv="Content-Security-Policy" content="trusted-types 'none' 'none'">
+<body>
+<script>
+  test(t => {
+    assert_throws_js(TypeError, _ => {
+      window.trustedTypes.createPolicy('SomeName', { createHTML: s => s } );
+    });
+  }, "Cannot create policy with name 'SomeName' - policy creation throws");
+
+  test(t => {
+    assert_throws_js(TypeError, _ => {
+      window.trustedTypes.createPolicy('default', { createHTML: s => s } );
+    });
+  }, "Cannot create policy with name 'default' - policy creation throws");
+</script>
diff --git a/tests/wpt/tests/trusted-types/block-Document-execCommand.html b/tests/wpt/tests/trusted-types/block-Document-execCommand.html
index 87759cdc197..7a26bff3ea9 100644
--- a/tests/wpt/tests/trusted-types/block-Document-execCommand.html
+++ b/tests/wpt/tests/trusted-types/block-Document-execCommand.html
@@ -35,7 +35,11 @@
   }
 
   // Test that with a default policy, all comamnds will work again.
-  trustedTypes.createPolicy("default", {"createHTML": x => x});
+  trustedTypes.createPolicy("default", {"createHTML": (x, _, sink) => {
+    assert_equals(sink, 'Document execCommand');
+    return x;
+  }});
+
   for (const command of commands) {
     test(t => {
       document.execCommand(command, false, "<em>Hello World</em>");
diff --git a/tests/wpt/tests/trusted-types/block-string-assignment-to-DOMWindowTimers-setTimeout-setInterval.html b/tests/wpt/tests/trusted-types/block-string-assignment-to-DOMWindowTimers-setTimeout-setInterval.html
index c24715718d1..2f8a99a9429 100644
--- a/tests/wpt/tests/trusted-types/block-string-assignment-to-DOMWindowTimers-setTimeout-setInterval.html
+++ b/tests/wpt/tests/trusted-types/block-string-assignment-to-DOMWindowTimers-setTimeout-setInterval.html
@@ -54,7 +54,14 @@
     });
   }, "`window.setInterval(null)` throws.");
 
-  let policy = window.trustedTypes.createPolicy("default", { createScript: x => "0" });
+  let policy = window.trustedTypes.createPolicy("default", { createScript: (x, _, sink) => {
+    if (x === "timeoutTestString") {
+      assert_equals(sink, 'Window setTimeout');
+    } else if (x === "intervalTestString") {
+      assert_equals(sink, 'Window setInterval');
+    }
+    return "0";
+  }});
   // After default policy creation string assignment implicitly calls createScript.
   test(t => {
     setTimeout(INPUTS.SCRIPT);
diff --git a/tests/wpt/tests/trusted-types/default-policy-callback-arguments.html b/tests/wpt/tests/trusted-types/default-policy-callback-arguments.html
index 4801b55387c..9b07be00261 100644
--- a/tests/wpt/tests/trusted-types/default-policy-callback-arguments.html
+++ b/tests/wpt/tests/trusted-types/default-policy-callback-arguments.html
@@ -17,6 +17,17 @@
       assert_equals(args[0], current_case[0], "Expecting the value.");
       assert_equals(args[1], current_case[1], "Expecting the type name.");
       assert_equals(args[2], current_case[2], "Expecting the sink name.");
+      switch (args[1]) {
+        case TrustedScriptURL:
+          assert_equals(args[2], 'HTMLScriptElement src');
+          break;
+        case TrustedHTML:
+          assert_equals(args[2], 'Element innerHTML');
+          break;
+        case TrustedScript:
+          assert_equals(args[2], 'HTMLScriptElement text');
+          break;
+      }
       return args[0];
     }
 
diff --git a/tests/wpt/tests/trusted-types/default-policy-report-only.html b/tests/wpt/tests/trusted-types/default-policy-report-only.html
index 1cff751a801..9d5f83e8939 100644
--- a/tests/wpt/tests/trusted-types/default-policy-report-only.html
+++ b/tests/wpt/tests/trusted-types/default-policy-report-only.html
@@ -54,7 +54,7 @@ testCases.forEach(c => {
 });
 
 // A trusted type policy that forces a number of edge cases.
-function policy(str) {
+function policy(str, type, sink) {
   if (str == "throw")
     throw RangeError();
   else if (str == "null")
@@ -65,8 +65,20 @@ function policy(str) {
     return document.bla();
   else if (str == "done")
     return null;
-  else
+  else {
+    switch (type) {
+      case TrustedScriptURL:
+        assert_equals(sink, 'HTMLScriptElement src');
+        break;
+      case TrustedHTML:
+        assert_equals(sink, 'Element innerHTML');
+        break;
+      case TrustedScript:
+        assert_equals(sink, 'HTMLScriptElement text');
+        break;
+    }
     return "sanitized: " + str;
+  }
 }
 
 trustedTypes.createPolicy("default", {
diff --git a/tests/wpt/tests/trusted-types/default-policy.html b/tests/wpt/tests/trusted-types/default-policy.html
index debde85cdac..47fdf1b1d44 100644
--- a/tests/wpt/tests/trusted-types/default-policy.html
+++ b/tests/wpt/tests/trusted-types/default-policy.html
@@ -54,7 +54,7 @@ testCases.forEach(c => {
 });
 
 // A trusted type policy that forces a number of edge cases.
-function policy(str) {
+function policy(str, type, sink) {
   if (str == "throw")
     throw RangeError();
   else if (str == "null")
@@ -65,8 +65,20 @@ function policy(str) {
     return document.bla();
   else if (str == "done")
     return null;
-  else
+  else {
+    switch (type) {
+      case TrustedScriptURL:
+        assert_equals(sink, 'HTMLScriptElement src');
+        break;
+      case TrustedHTML:
+        assert_equals(sink, 'Element innerHTML');
+        break;
+      case TrustedScript:
+        assert_equals(sink, 'HTMLScriptElement text');
+        break;
+    }
     return "sanitized: " + str;
+  }
 }
 
 trustedTypes.createPolicy("default", {
diff --git a/tests/wpt/tests/trusted-types/eval-csp-no-tt.html b/tests/wpt/tests/trusted-types/eval-csp-no-tt.html
index 6720d80fe76..5c44d854c6a 100644
--- a/tests/wpt/tests/trusted-types/eval-csp-no-tt.html
+++ b/tests/wpt/tests/trusted-types/eval-csp-no-tt.html
@@ -14,10 +14,18 @@
     assert_equals(eval(p.createScript("1+1")), 2);
   }, "eval of TrustedScript works.");
 
+  test(t => {
+    assert_equals(eval?.(p.createScript("1+1")), 2);
+  }, "indirect eval of TrustedScript works.");
+
   test(t => {
     assert_equals(eval('1+1'), 2);
   }, "eval of string works.");
 
+  test(t => {
+    assert_equals(eval?.('1+1'), 2);
+  }, "indirect eval of string works.");
+
   test(t => {
     assert_equals(eval(42), 42);
     assert_object_equals(eval({}), {});
diff --git a/tests/wpt/tests/trusted-types/eval-csp-tt-default-policy.html b/tests/wpt/tests/trusted-types/eval-csp-tt-default-policy.html
index 9afe571199c..ab9b98df64e 100644
--- a/tests/wpt/tests/trusted-types/eval-csp-tt-default-policy.html
+++ b/tests/wpt/tests/trusted-types/eval-csp-tt-default-policy.html
@@ -15,6 +15,10 @@
     assert_equals(eval(p.createScript('1+1')), 2);
   }, "eval of TrustedScript works.");
 
+  test(t => {
+    assert_equals(eval?.(p.createScript('1+1')), 2);
+  }, "indirect eval of TrustedScript works.");
+
   test(t => {
     assert_equals(eval('1+1'), 5); // '1+1' becomes '4+1'.
   }, "eval of string works.");
diff --git a/tests/wpt/tests/trusted-types/eval-csp-tt-no-default-policy.html b/tests/wpt/tests/trusted-types/eval-csp-tt-no-default-policy.html
index 8c4aba11ecb..c4e5d0911ac 100644
--- a/tests/wpt/tests/trusted-types/eval-csp-tt-no-default-policy.html
+++ b/tests/wpt/tests/trusted-types/eval-csp-tt-no-default-policy.html
@@ -14,10 +14,18 @@
     assert_equals(eval(p.createScript('1+1')), 2);
   }, "eval of TrustedScript works.");
 
+  test(t => {
+    assert_equals(eval?.(p.createScript('1+1')), 2);
+  }, "indirect eval of TrustedScript works.");
+
   test(t => {
     assert_throws_js(EvalError, _ => eval('1+1'));
   }, "eval of string fails.");
 
+  test(t => {
+    assert_throws_js(EvalError, _ => eval?.('1+1'));
+  }, "indirect eval of string fails.");
+
   test(t => {
     assert_equals(eval(42), 42);
     assert_object_equals(eval({}), {});
diff --git a/tests/wpt/tests/trusted-types/eval-no-csp-no-tt-default-policy.html b/tests/wpt/tests/trusted-types/eval-no-csp-no-tt-default-policy.html
index d36afbc8ac4..18b9441c7a1 100644
--- a/tests/wpt/tests/trusted-types/eval-no-csp-no-tt-default-policy.html
+++ b/tests/wpt/tests/trusted-types/eval-no-csp-no-tt-default-policy.html
@@ -15,10 +15,18 @@
     assert_equals(eval(p.createScript('1+1')), 2);
   }, "eval of TrustedScript works.");
 
+  test(t => {
+    assert_equals(eval?.(p.createScript('1+1')), 2);
+  }, "indirect eval of TrustedScript works.");
+
   test(t => {
     assert_equals(eval('1+1'), 2);
   }, "eval of string works and does not call a default policy.");
 
+  test(t => {
+    assert_equals(eval?.('1+1'), 2);
+  }, "indirect eval of string works and does not call a default policy.");
+
   test(t => {
     assert_equals(eval(42), 42);
     assert_object_equals(eval({}), {});
diff --git a/tests/wpt/tests/trusted-types/eval-no-csp-no-tt.html b/tests/wpt/tests/trusted-types/eval-no-csp-no-tt.html
index 3013c084470..3f9799864d4 100644
--- a/tests/wpt/tests/trusted-types/eval-no-csp-no-tt.html
+++ b/tests/wpt/tests/trusted-types/eval-no-csp-no-tt.html
@@ -14,10 +14,18 @@
     assert_equals(eval(p.createScript('1+1')), 2);
   }, "eval of TrustedScript works.");
 
+  test(t => {
+    assert_equals(eval?.(p.createScript('1+1')), 2);
+  }, "indirect eval of TrustedScript works.");
+
   test(t => {
     assert_equals(eval('1+1'), 2);
   }, "eval of string works.");
 
+  test(t => {
+    assert_equals(eval?.('1+1'), 2);
+  }, "indirect eval of string works.");
+
   test(t => {
     assert_equals(eval(42), 42);
     assert_object_equals(eval({}), {});
diff --git a/tests/wpt/tests/trusted-types/eval-with-permissive-csp.html b/tests/wpt/tests/trusted-types/eval-with-permissive-csp.html
index 8910d4e7ef0..fb0776852e7 100644
--- a/tests/wpt/tests/trusted-types/eval-with-permissive-csp.html
+++ b/tests/wpt/tests/trusted-types/eval-with-permissive-csp.html
@@ -20,6 +20,14 @@
     assert_equals(a, 0);
   }, "eval with plain string with Trusted Types and permissive CSP throws (no type).");
 
+  test(t => {
+    let a = 0;
+    assert_throws_js(EvalError, _ => {
+      eval?.('a="hello there"');
+    });
+    assert_equals(a, 0);
+  }, "indirect eval with plain string with Trusted Types and permissive CSP throws (no type).");
+
   test(t => {
     let a = 0;
     assert_throws_js(EvalError, _ => {
@@ -33,6 +41,11 @@
     assert_equals("" + s, "Hello a cat string");
   }, "eval with TrustedScript and permissive CSP works.");
 
+  test(t => {
+    let s = eval?.(p.createScript('"Hello transformed string"'));
+    assert_equals("" + s, "Hello a cat string");
+  }, "indirect eval with TrustedScript and permissive CSP works.");
+
   test(t => {
     let s = new Function(p.createScript('return "Hello transformed string"'))();
     assert_equals(s, "Hello a cat string");
@@ -44,6 +57,11 @@
     assert_equals(s, "Hello a cat untrusted string");
   }, "eval with default policy and permissive CSP still obeys default policy.");
 
+  test(t => {
+    let s = eval?.('"Hello transformed untrusted string"');
+    assert_equals(s, "Hello a cat untrusted string");
+  }, "indirect eval with default policy and permissive CSP still obeys default policy.");
+
   test(t => {
     let s = new Function('return "Hello transformed untrusted string"')();
     assert_equals(s, "Hello a cat untrusted string");
diff --git a/tests/wpt/tests/trusted-types/modify-attributes-in-callback.html b/tests/wpt/tests/trusted-types/modify-attributes-in-callback.html
index 96b4501128b..4f94e088722 100644
--- a/tests/wpt/tests/trusted-types/modify-attributes-in-callback.html
+++ b/tests/wpt/tests/trusted-types/modify-attributes-in-callback.html
@@ -7,15 +7,25 @@
 </head>
 <body>
 <iframe id="iframe" data-x="" srcdoc="content" onmouseover=""></iframe>
+<div id="div"></div>
 <script>
   // This is a regression test for https://g-issues.chromium.org/issues/333739948
   // The test should hold true for any browser that supports Trusted Types.
 
   let target = "data-x";
   trustedTypes.createPolicy("default", {
-    createHTML: (s) => {
+    createHTML: (s, _, sink) => {
+      assert_equals(sink, 'HTMLIFrameElement srcdoc');
       iframe.removeAttribute(target);
       return s;
+    },
+    createScript: (s) => {
+      if (s == 'accepted') {
+        return s;
+      }
+
+      div.setAttribute('onmouseover', 'accepted');
+      return s;
     }
   });
 
@@ -36,4 +46,25 @@
     assert_equals(iframe.srcdoc, "new srcdoc value");
   }, "Ensure the deleted attributes is modified.");
 
+  test(t => {
+    div.toggleAttribute('onmouseover');
+    assert_equals(div.attributes.length, 2);
+    assert_equals(div.attributes.onmouseover.value, '');
+    div.removeAttribute('onmouseover');
+  }, "Ensure toggleAttribute results in an empty attribute.");
+
+  test(t => {
+    div.setAttribute('onmouseover', 'foo');
+    assert_equals(div.attributes.length, 2);
+    assert_equals(div.attributes.onmouseover.value, 'foo');
+    div.removeAttribute('onmouseover');
+  }, "Ensure setAttribute results in right attribute value.");
+
+  test(t => {
+    div.setAttributeNS(null, 'onmouseover', 'foo');
+    assert_equals(div.attributes.length, 2);
+    assert_equals(div.attributes.onmouseover.value, 'foo');
+    div.removeAttribute('onmouseover');
+  }, "Ensure setAttributeNS results in right attribute value.");
+
 </script>
diff --git a/tests/wpt/tests/trusted-types/require-trusted-types-for.html b/tests/wpt/tests/trusted-types/require-trusted-types-for.html
index 2a3820a89b8..b0dcd9cc930 100644
--- a/tests/wpt/tests/trusted-types/require-trusted-types-for.html
+++ b/tests/wpt/tests/trusted-types/require-trusted-types-for.html
@@ -64,7 +64,10 @@
     return new Promise(resolve => {
       p = trustedTypes.createPolicy("policyA", {createScript: s => s + 1});
       p1 = trustedTypes.createPolicy("policyA", {createHTML: _ => ""});
-      p2 = trustedTypes.createPolicy("default", {createScript: s => s});
+      p2 = trustedTypes.createPolicy("default", {createScript: (s, _, sink) => {
+        assert_equals(sink, 'HTMLScriptElement innerText');
+        return s;
+      }});
       script = p.createScript("1");
       assert_equals(script.toString(), "11");
       s = document.createElement("script");
diff --git a/tests/wpt/tests/trusted-types/support/WorkerGlobalScope-eval.https.js b/tests/wpt/tests/trusted-types/support/WorkerGlobalScope-eval.https.js
index be0a4300e1a..06313752087 100644
--- a/tests/wpt/tests/trusted-types/support/WorkerGlobalScope-eval.https.js
+++ b/tests/wpt/tests/trusted-types/support/WorkerGlobalScope-eval.https.js
@@ -18,6 +18,10 @@ test(t => {
   assert_throws_js(EvalError, _ => eval("2"));
 }, "eval(string) in " + worker_type);
 
+test(t => {
+  assert_throws_js(EvalError, _ => eval?.("2"));
+}, "indirect eval(string) in " + worker_type);
+
 // Test eval(TrustedScript)
 let test_policy = trustedTypes.createPolicy("xxx", {
   createScript: x => x.replace("2", "7")
@@ -26,6 +30,10 @@ test(t => {
   assert_equals(eval(test_policy.createScript("2")), 7);
 }, "eval(TrustedScript) in " + worker_type);
 
+test(t => {
+  assert_equals(eval?.(test_policy.createScript("2")), 7);
+}, "indirect eval(TrustedScript) in " + worker_type);
+
 // Test eval(String) with default policy
 trustedTypes.createPolicy("default", {
   createScript: x => x.replace("2", "5")
@@ -33,5 +41,8 @@ trustedTypes.createPolicy("default", {
 test(t => {
   assert_equals(eval("2"), 5);
 }, "eval(string) with default policy in " + worker_type);
+test(t => {
+  assert_equals(eval?.("2"), 5);
+}, "indirect eval(string) with default policy in " + worker_type);
 
 done();
diff --git a/tests/wpt/tests/trusted-types/trusted-types-createHTMLDocument.html b/tests/wpt/tests/trusted-types/trusted-types-createHTMLDocument.html
index e4af2eb5902..cf209cca800 100644
--- a/tests/wpt/tests/trusted-types/trusted-types-createHTMLDocument.html
+++ b/tests/wpt/tests/trusted-types/trusted-types-createHTMLDocument.html
@@ -55,8 +55,12 @@ for (let doc_type in doc_types) {
 // (which hanve't yet run).
 promise_test(t => {
   return new Promise(resolve => {
-    trustedTypes.createPolicy("default",
-                              { createHTML: s => s + " [default]" });
+    trustedTypes.createPolicy("default", {
+      createHTML: (s, _, sink) => {
+        assert_equals(sink, 'Element innerHTML');
+        return s + " [default]";
+      }
+    });
     resolve();
   });
 }, "Install default policy.")
diff --git a/tests/wpt/tests/trusted-types/trusted-types-duplicate-names-without-enforcement.html b/tests/wpt/tests/trusted-types/trusted-types-duplicate-names-without-enforcement.html
index afef457a9c2..d625ab4e617 100644
--- a/tests/wpt/tests/trusted-types/trusted-types-duplicate-names-without-enforcement.html
+++ b/tests/wpt/tests/trusted-types/trusted-types-duplicate-names-without-enforcement.html
@@ -6,6 +6,10 @@
 <body>
 <script>
 const policy = { createHTML: a => a };
+const policy_default = { createHTML: (a, _, sink) => {
+  assert_equals(sink, 'Element innerHTML');
+  return a;
+}};
 
 test(t => {
   // The spec demands that duplicate policies are allowed when TT is not
@@ -20,11 +24,11 @@ test(t => {
 test(t => {
   // The spec demands that duplicate "default" policy creation fails, even
   // when TT is not enforced.
-  let p = trustedTypes.createPolicy("default", policy);
+  let p = trustedTypes.createPolicy("default", policy_default);
   assert_true(p instanceof TrustedTypePolicy);
 
   // The second instance should throw:
-  assert_throws_js(TypeError, _ => trustedTypes.createPolicy("default", policy));
+  assert_throws_js(TypeError, _ => trustedTypes.createPolicy("default", policy_default));
 }, "createPolicy - duplicate \"default\" policy is never allowed.");
 </script>
 </body>
diff --git a/tests/wpt/tests/trusted-types/worker-constructor.https.html b/tests/wpt/tests/trusted-types/worker-constructor.https.html
index 6e127b11a5b..319041cf331 100644
--- a/tests/wpt/tests/trusted-types/worker-constructor.https.html
+++ b/tests/wpt/tests/trusted-types/worker-constructor.https.html
@@ -64,7 +64,16 @@ promise_test(t => {
 // Tests with default policy.
 promise_test(t => {
   trustedTypes.createPolicy("default", {
-      createScriptURL: s => s.replace("potato", "https") });
+    createScriptURL: (s, _, sink) => {
+      if (s === "Worker") {
+        assert_equals(sink, 'Worker constructor');
+      } else if (s === "SharedWorker") {
+        assert_equals(sink, 'SharedWorker constructor');
+      } else if (s == "service_worker") {
+        assert_equals(sink, 'ServiceWorkerContainer register');
+      }
+      return s.replace("potato", "https");
+    }});
   return Promise.resolve();
 }, "Setup default policy.");
 
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/user_prompt_opened/user_prompt_opened.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/user_prompt_opened/user_prompt_opened.py
index fcd030116df..c37bb66e4e9 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/user_prompt_opened/user_prompt_opened.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/user_prompt_opened/user_prompt_opened.py
@@ -53,11 +53,14 @@ async def test_prompt_type(
         "context": new_tab["context"],
         "type": prompt_type,
         "message": text,
+        **({
+            "defaultValue": ""
+        } if prompt_type == 'prompt' else {})
     }
 
 
 @pytest.mark.parametrize(
-    "default", [None, "", "default"], ids=["null", "empty string", "non empty string"]
+    "default", [None, "", "default"], ids=["undefined", "empty string", "non empty string"]
 )
 async def test_prompt_default_value(
     bidi_session, inline, new_tab, subscribe_events, wait_for_event, wait_for_future_safe, default
@@ -68,7 +71,7 @@ async def test_prompt_default_value(
     text = "test"
 
     if default is None:
-        script = f"<script>window.prompt('{text}', null)</script>"
+        script = f"<script>window.prompt('{text}')</script>"
     else:
         script = f"<script>window.prompt('{text}', '{default}')</script>"
 
@@ -85,7 +88,9 @@ async def test_prompt_default_value(
         "message": text,
     }
 
-    if default is not None:
+    if default is None:
+        expected_event["defaultValue"] = ""
+    else:
         expected_event["defaultValue"] = default
 
     assert event == expected_event
diff --git a/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence.py b/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence.py
index 603b2941415..7c68fd299f7 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence.py
@@ -33,50 +33,3 @@ async def test_release_char_sequence_sends_keyup_events_in_reverse(
     all_events = await get_events(bidi_session, top_context["context"])
     (events, expected) = filter_supported_key_events(all_events, expected)
     assert events == expected
-
-
-@pytest.mark.parametrize(
-    "release_actions",
-    [True, False],
-    ids=["with release actions", "without release actions"],
-)
-async def test_release_mouse_sequence_resets_dblclick_state(
-    bidi_session,
-    top_context,
-    get_element,
-    load_static_test_page,
-    release_actions
-):
-    await load_static_test_page(page="test_actions.html")
-    reporter = await get_element("#outer")
-
-    actions = Actions()
-    actions.add_pointer(pointer_type="mouse").pointer_move(
-        x=0, y=0, origin=get_element_origin(reporter)
-    ).pointer_down(button=0).pointer_up(button=0)
-    await bidi_session.input.perform_actions(
-        actions=actions, context=top_context["context"]
-    )
-
-    if release_actions:
-        await bidi_session.input.release_actions(context=top_context["context"])
-
-    await bidi_session.input.perform_actions(
-        actions=actions, context=top_context["context"]
-    )
-    events = await get_events(bidi_session, top_context["context"])
-
-    # The expeced data here might vary between the vendors since the spec at the moment
-    # is not clear on how the double/triple click should be tracked. It should be
-    # clarified in the scope of https://github.com/w3c/webdriver/issues/1772.
-    expected = [
-        {"type": "mousedown", "button": 0},
-        {"type": "mouseup", "button": 0},
-        {"type": "click", "button": 0},
-        {"type": "mousedown", "button": 0},
-        {"type": "mouseup", "button": 0},
-        {"type": "click", "button": 0},
-    ]
-
-    filtered_events = [filter_dict(e, expected[0]) for e in events]
-    assert expected == filtered_events[1:]
diff --git a/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence_tentative.py b/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence_tentative.py
new file mode 100644
index 00000000000..f4799a03154
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/input/release_actions/sequence_tentative.py
@@ -0,0 +1,52 @@
+import pytest
+from webdriver.bidi.modules.input import Actions, get_element_origin
+from webdriver.bidi.modules.script import ContextTarget
+
+from tests.support.helpers import filter_dict, filter_supported_key_events
+from .. import get_events
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_release_mouse_sequence_resets_dblclick_state(
+        bidi_session,
+        top_context,
+        get_element,
+        load_static_test_page
+):
+    """
+    The actual behaviour of the double click, specifically in the light of the `release_actions` is not clear in the
+    spec at the moment: https://github.com/w3c/webdriver/issues/1772
+    """
+    await load_static_test_page(page="test_actions.html")
+    reporter = await get_element("#outer")
+
+    actions = Actions()
+    actions.add_pointer(pointer_type="mouse").pointer_move(
+        x=0, y=0, origin=get_element_origin(reporter)
+    ).pointer_down(button=0).pointer_up(button=0)
+    await bidi_session.input.perform_actions(
+        actions=actions, context=top_context["context"]
+    )
+
+    await bidi_session.input.release_actions(context=top_context["context"])
+
+    await bidi_session.input.perform_actions(
+        actions=actions, context=top_context["context"]
+    )
+    events = await get_events(bidi_session, top_context["context"])
+
+    # The expected data here might vary between the vendors since the spec at the moment
+    # is not clear on how the double/triple click should be tracked. It should be
+    # clarified in the scope of https://github.com/w3c/webdriver/issues/1772.
+    expected = [
+        {"type": "mousedown", "button": 0},
+        {"type": "mouseup", "button": 0},
+        {"type": "click", "button": 0},
+        {"type": "mousedown", "button": 0},
+        {"type": "mouseup", "button": 0},
+        {"type": "click", "button": 0},
+    ]
+
+    filtered_events = [filter_dict(e, expected[0]) for e in events]
+    assert expected == filtered_events[1:]
diff --git a/tests/wpt/tests/webdriver/tests/bidi/input/set_files/files.py b/tests/wpt/tests/webdriver/tests/bidi/input/set_files/files.py
index 7a31f3e14a4..df91861752c 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/input/set_files/files.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/input/set_files/files.py
@@ -1,4 +1,5 @@
 import pytest
+from webdriver.bidi.error import UnsupportedOperationException
 
 from .. import get_events
 
@@ -350,3 +351,39 @@ async def test_set_files_twice_same_in_different_folders(
             "type": "change",
         },
     ]
+
+
+async def test_non_existent_file(
+    bidi_session, top_context, load_static_test_page, get_element
+):
+    file = "non_existent_file.txt"
+
+    await load_static_test_page(page="files.html")
+    element = await get_element("#input")
+
+    # Firefox is unable to set non-existent files.
+    if bidi_session.capabilities.get("browserName") == "firefox":
+        with pytest.raises(UnsupportedOperationException):
+            await bidi_session.input.set_files(
+                context=top_context["context"],
+                element=element,
+                files=[file],
+            )
+    else:
+        await bidi_session.input.set_files(
+            context=top_context["context"],
+            element=element,
+            files=[file],
+        )
+
+        events = await get_events(bidi_session, top_context["context"])
+        assert events == [
+            {
+                "files": [file],
+                "type": "input",
+            },
+            {
+                "files": [file],
+                "type": "change",
+            },
+        ]
diff --git a/tests/wpt/tests/webdriver/tests/classic/new_session/conftest.py b/tests/wpt/tests/webdriver/tests/classic/new_session/conftest.py
index b6179aa90e7..afb3b9ec812 100644
--- a/tests/wpt/tests/webdriver/tests/classic/new_session/conftest.py
+++ b/tests/wpt/tests/webdriver/tests/classic/new_session/conftest.py
@@ -40,7 +40,7 @@ def fixture_configuration(configuration):
 
 
 @pytest.fixture(name="new_session")
-def fixture_new_session(request, configuration, current_session):
+def fixture_new_session(configuration, current_session):
     """Start a new session for tests which themselves test creating new sessions.
 
     :param body: The content of the body for the new session POST request.
@@ -50,16 +50,22 @@ def fixture_new_session(request, configuration, current_session):
      is useful for tests which call this fixture multiple times within the
      same test.
     """
-    custom_session = {}
-
     transport = HTTPWireProtocol(
         configuration["host"],
         configuration["port"],
         url_prefix="/",
     )
 
+    custom_session = {
+        "capabilities": None,
+        "sessionId": None,
+        "transport": transport,
+    }
+
     def _delete_session(session_id):
-        transport.send("DELETE", "session/{}".format(session_id))
+        response = transport.send("DELETE", "session/{}".format(session_id))
+        if response.status != 200:
+            raise Exception("Failed to delete WebDriver session")
 
     def new_session(body, delete_existing_session=False):
         # If there is an active session from the global session fixture,
@@ -68,15 +74,16 @@ def fixture_new_session(request, configuration, current_session):
             current_session.end()
 
         if delete_existing_session:
-            _delete_session(custom_session["session"]["sessionId"])
+            _delete_session(custom_session["sessionId"])
 
         response = transport.send("POST", "session", body)
         if response.status == 200:
-            custom_session["session"] = response.body["value"]
-        return response, custom_session.get("session", None)
+            custom_session["sessionId"] = response.body["value"]["sessionId"]
+            custom_session["capabilities"] = response.body["value"]["capabilities"]
+        return response, custom_session
 
     yield new_session
 
-    if custom_session.get("session") is not None:
-        _delete_session(custom_session["session"]["sessionId"])
+    if custom_session["sessionId"] is not None:
+        _delete_session(custom_session["sessionId"])
         custom_session = None
diff --git a/tests/wpt/tests/webdriver/tests/classic/new_session/support/create.py b/tests/wpt/tests/webdriver/tests/classic/new_session/support/create.py
index a0d0ce37b57..ac8d0098dbe 100644
--- a/tests/wpt/tests/webdriver/tests/classic/new_session/support/create.py
+++ b/tests/wpt/tests/webdriver/tests/classic/new_session/support/create.py
@@ -30,11 +30,6 @@ valid_data = [
     ("strictFileInteractability", [
         True, False, None,
     ]),
-    ("unhandledPromptBehavior", [
-        "dismiss",
-        "accept",
-        None,
-    ]),
     ("test:extension", [
         None, False, "abc", 123, [],
         {"key": "value"},
@@ -102,12 +97,18 @@ invalid_data = [
         1, [], {}, "false",
     ]),
     ("unhandledPromptBehavior", [
-        1, [], {}, False,
-        "DISMISS",
-        "dismissABC",
-        "Accept",
-        " dismiss",
-        "dismiss ",
+        False, 1, [],
+        "Dismiss",
+        "ACCEPT",
+        "ignore ",
+        "dismiss and Notify",
+        "accept and NOTIFY",
+        {"foo": "accept"},
+        {"beforeunload": "bar"},
+        {"alert": None},
+        {"confirm": False},
+        {"prompt": 1},
+        {"beforeUnload": []},
     ])
 ]
 
diff --git a/tests/wpt/tests/webdriver/tests/classic/new_session/unhandled_prompt_behavior.py b/tests/wpt/tests/webdriver/tests/classic/new_session/unhandled_prompt_behavior.py
new file mode 100644
index 00000000000..2df69b131ff
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/classic/new_session/unhandled_prompt_behavior.py
@@ -0,0 +1,201 @@
+# META: timeout=long
+
+import pytest
+import webdriver.protocol as protocol
+
+from tests.support.asserts import assert_error, assert_success
+
+
+PROMPT_HANDLERS = [
+    "accept",
+    "accept and notify",
+    "dismiss",
+    "dismiss and notify",
+    "ignore",
+]
+
+PROMPT_TYPES = [
+    "alert",
+    "beforeUnload",
+    "confirm",
+    "default",
+    "prompt",
+]
+
+
+def element_send_keys(session, element, text):
+    return session["transport"].send(
+        "POST",
+        f"/session/{session['sessionId']}/element/{element.id}/value",
+        {"text": text},
+    )
+
+
+def execute_script(session, script, args=None):
+    if args is None:
+        args = []
+    body = {"script": script, "args": args}
+
+    return session["transport"].send(
+        "POST",
+        f"/session/{session['sessionId']}/execute/sync",
+        body,
+        encoder=protocol.Encoder,
+        decoder=protocol.Decoder,
+        session=session,
+    )
+
+
+def accept_alert(session):
+    return session["transport"].send(
+        "POST", f"session/{session['sessionId']}/alert/accept"
+    )
+
+
+def navigate_to(session, url):
+    return session["transport"].send(
+        "POST", f"session/{session['sessionId']}/url", {"url": url}
+    )
+
+
+def test_unhandled_prompt_behavior_as_string_default(
+    new_session, add_browser_capabilities
+):
+    response, _ = new_session(
+        {"capabilities": {"alwaysMatch": add_browser_capabilities({})}}
+    )
+    value = assert_success(response)
+    assert value["capabilities"]["unhandledPromptBehavior"] == "dismiss and notify"
+
+
+@pytest.mark.parametrize("handler", PROMPT_HANDLERS)
+def test_unhandled_prompt_behavior_as_string(
+    new_session, add_browser_capabilities, handler
+):
+    response, _ = new_session(
+        {
+            "capabilities": {
+                "alwaysMatch": add_browser_capabilities(
+                    {"unhandledPromptBehavior": handler}
+                )
+            }
+        }
+    )
+    value = assert_success(response)
+    assert value["capabilities"]["unhandledPromptBehavior"] == handler
+
+
+@pytest.mark.parametrize(
+    "handler,expected_capability,closed,notify",
+    [
+        (  # Check the default behavior with no handlers defined
+            {},
+            "dismiss and notify",
+            True,
+            True,
+        ),
+        (  # Check the default behavior with a custom value defined
+            {"default": "accept"},
+            "accept",
+            True,
+            False,
+        ),
+        (  # Check the default behavior with a custom value and override defined
+            {"default": "accept", "alert": "ignore"},
+            {"default": "accept", "alert": "ignore"},
+            False,
+            True,
+        ),
+    ],
+)
+def test_unhandled_prompt_behavior_as_object_default(
+    new_session, add_browser_capabilities, handler, expected_capability, closed, notify
+):
+    response, session = new_session(
+        {
+            "capabilities": {
+                "alwaysMatch": add_browser_capabilities(
+                    {"unhandledPromptBehavior": handler}
+                )
+            }
+        }
+    )
+    value = assert_success(response)
+    assert value["capabilities"]["unhandledPromptBehavior"] == expected_capability
+
+    execute_script(session, "alert('foo');")
+
+    # Open user prompt and check if an error gets reported if expected
+    response = execute_script(session, "window.result = 1; return window.result;")
+    if notify:
+        assert_error(response, "unexpected alert open")
+    else:
+        assert_success(response, 1)
+
+    # Check that the user prompt has already closed if one was expected
+    response = accept_alert(session)
+    if closed:
+        assert_error(response, "no such alert")
+    else:
+        assert_success(response, None)
+
+
+@pytest.mark.parametrize("handler", PROMPT_HANDLERS)
+@pytest.mark.parametrize("prompt", PROMPT_TYPES)
+def test_unhandled_prompt_behavior_as_object(
+    new_session, add_browser_capabilities, prompt, handler
+):
+    response, _ = new_session(
+        {
+            "capabilities": {
+                "alwaysMatch": add_browser_capabilities(
+                    {"unhandledPromptBehavior": {prompt: handler}}
+                )
+            }
+        }
+    )
+    value = assert_success(response)
+    if prompt == "default":
+        # For a single default handler the capability is serialized as a string
+        assert value["capabilities"]["unhandledPromptBehavior"] == handler
+    else:
+        assert value["capabilities"]["unhandledPromptBehavior"] == {prompt: handler}
+
+
+@pytest.mark.parametrize("handler", PROMPT_HANDLERS)
+def test_beforeunload_prompts_always_automatically_accepted(
+    new_session, add_browser_capabilities, url, handler
+):
+    response, session = new_session(
+        {
+            "capabilities": {
+                "alwaysMatch": add_browser_capabilities(
+                    {"unhandledPromptBehavior": {"beforeUnload": handler}}
+                )
+            }
+        }
+    )
+    assert_success(response)
+
+    page_beforeunload = url("/webdriver/tests/support/html/beforeunload.html")
+    navigate_to(session, page_beforeunload)
+
+    response = execute_script(
+        session,
+        """
+        return document.querySelector("input");
+    """,
+    )
+    elem = assert_success(response)
+
+    # Set sticky user activation
+    response = element_send_keys(session, elem, "foo")
+    assert_success(response)
+
+    # Trigger a beforeunload prompt
+    response = navigate_to(session, "about:blank")
+    assert_success(response)
+
+    # Prompt was automatically accepted
+    response = accept_alert(session)
+    assert_error(response, "no such alert")
diff --git a/tests/wpt/tests/webdriver/tests/classic/perform_actions/conftest.py b/tests/wpt/tests/webdriver/tests/classic/perform_actions/conftest.py
index 0694cce494f..bb134a4eb1b 100644
--- a/tests/wpt/tests/webdriver/tests/classic/perform_actions/conftest.py
+++ b/tests/wpt/tests/webdriver/tests/classic/perform_actions/conftest.py
@@ -1,4 +1,5 @@
 import pytest
+import time
 
 from webdriver.error import NoSuchWindowException
 
@@ -59,10 +60,21 @@ def wheel_chain(session):
 
 
 @pytest.fixture(autouse=True)
-def release_actions(session, request):
+def release_actions(session):
     # release all actions after each test
     # equivalent to a teardown_function, but with access to session fixture
-    request.addfinalizer(session.actions.release)
+    yield
+
+    # Avoid frequent intermittent failures on Mozilla Windows CI with
+    # perform_actions tests:
+    # https://bugzilla.mozilla.org/show_bug.cgi?id=1879556
+    if (
+        session.capabilities["browserName"] == "firefox"
+        and session.capabilities["platformName"] == "windows"
+    ):
+        time.sleep(0.1)
+
+    session.actions.release()
 
 
 @pytest.fixture
diff --git a/tests/wpt/tests/webdriver/tests/support/fixtures.py b/tests/wpt/tests/webdriver/tests/support/fixtures.py
index 7468e8b251f..5ab020ad008 100644
--- a/tests/wpt/tests/webdriver/tests/support/fixtures.py
+++ b/tests/wpt/tests/webdriver/tests/support/fixtures.py
@@ -64,7 +64,7 @@ def full_configuration():
 
     host - WebDriver server host.
     port -  WebDriver server port.
-    capabilites - Capabilites passed when creating the WebDriver session
+    capabilities - Capabilities passed when creating the WebDriver session
     timeout_multiplier - Multiplier for timeout values
     webdriver - Dict with keys `binary`: path to webdriver binary, and
                 `args`: Additional command line arguments passed to the webdriver
diff --git a/tests/wpt/tests/webnn/validation_tests/elementwise-logical.https.any.js b/tests/wpt/tests/webnn/validation_tests/elementwise-logical.https.any.js
index 86183b074ae..25d7b59924c 100644
--- a/tests/wpt/tests/webnn/validation_tests/elementwise-logical.https.any.js
+++ b/tests/wpt/tests/webnn/validation_tests/elementwise-logical.https.any.js
@@ -17,4 +17,4 @@ kElementwiseLogicalBinaryOperators.forEach((operatorName) => {
 });
 
 // The `not()` operator is unary.
-validateInputFromOtherBuilder('not');
+validateInputFromAnotherBuilder('not');
diff --git a/tests/wpt/tests/webnn/validation_tests/gather.https.any.js b/tests/wpt/tests/webnn/validation_tests/gather.https.any.js
index 668112cc10f..4a2ab218f8d 100644
--- a/tests/wpt/tests/webnn/validation_tests/gather.https.any.js
+++ b/tests/wpt/tests/webnn/validation_tests/gather.https.any.js
@@ -18,6 +18,20 @@ const tests = [
     axis: 2,
     output: {dataType: 'float32', dimensions: [1, 2, 5, 6, 4]}
   },
+  {
+    name: '[gather] Test gather with indices\'s dataType = uint32',
+    input: {dataType: 'float32', dimensions: [1, 2, 3, 4]},
+    indices: {dataType: 'uint32', dimensions: [5, 6]},
+    axis: 2,
+    output: {dataType: 'float32', dimensions: [1, 2, 5, 6, 4]}
+  },
+  {
+    name: '[gather] Test gather with indices\'s dataType = int32',
+    input: {dataType: 'float32', dimensions: [1, 2, 3, 4]},
+    indices: {dataType: 'int32', dimensions: [5, 6]},
+    axis: 2,
+    output: {dataType: 'float32', dimensions: [1, 2, 5, 6, 4]}
+  },
   {
     name: '[gather] TypeError is expected if the input is a scalar',
     input: {dataType: 'float16', dimensions: []},
@@ -32,9 +46,15 @@ const tests = [
   },
   {
     name:
-        '[gather] TypeError is expected if the data type of indices is invalid',
+        '[gather] TypeError is expected if the data type of indices is float32 which is invalid',
     input: {dataType: 'float16', dimensions: [1, 2, 3, 4]},
     indices: {dataType: 'float32', dimensions: [5, 6]}
+  },
+  {
+    name:
+        '[gather] TypeError is expected if the data type of indices is uint64 which is invalid',
+    input: {dataType: 'float16', dimensions: [1, 2, 3, 4]},
+    indices: {dataType: 'uint64', dimensions: [5, 6]}
   }
 ];
 
diff --git a/tests/wpt/tests/webnn/validation_tests/reduction.https.any.js b/tests/wpt/tests/webnn/validation_tests/reduction.https.any.js
index 7da6b24dcf0..e9643c0f8a5 100644
--- a/tests/wpt/tests/webnn/validation_tests/reduction.https.any.js
+++ b/tests/wpt/tests/webnn/validation_tests/reduction.https.any.js
@@ -24,15 +24,18 @@ const kFloatRestrictReductionOperators = [
   'reduceMean',
 ];
 
-const kFloatAllowReductionOperators = [
+const kFloatInt32Uint32RestrictReductionOperators = [
   'reduceL1',
-  'reduceMax',
-  'reduceMin',
   'reduceProduct',
   'reduceSum',
   'reduceSumSquare',
 ];
 
+const kNoTypeRestrictReductionOperators = [
+  'reduceMax',
+  'reduceMin',
+];
+
 const allReductionOperatorsTests = [
   {
     name: '[reduce] Test reduce with default options.',
@@ -76,8 +79,7 @@ const allReductionOperatorsTests = [
 
 const kFloatRestrictOperatorsTests = [
   {
-    name:
-        '[reduce] Throw if the input data type is not one of the floating point.',
+    name: '[reduce] Throw if the input data type is int32.',
     input: {dataType: 'int32', dimensions: [1, 2, 5, 5]},
     options: {
       axes: [0, 1],
@@ -85,12 +87,47 @@ const kFloatRestrictOperatorsTests = [
   },
 ];
 
-const kFloatAllowOperatorsTests = [
+const kFloatInt32Uint32RestrictOperatorsTests = [
+  {
+    name: '[reduce] Test reduce when input\'s datatype is int32.',
+    input: {dataType: 'int32', dimensions: [1, 2, 5, 5]},
+    output: {dataType: 'int32', dimensions: []}
+  },
+  {
+    name: '[reduce] Test reduce when input\'s datatype is uint32.',
+    input: {dataType: 'uint32', dimensions: [1, 2, 5, 5]},
+    output: {dataType: 'uint32', dimensions: []}
+  },
   {
     name:
-        '[reduce] Test when the input data type is not one of the floating point.',
-    input: {dataType: 'int32', dimensions: [1, 3, 4, 4]},
-    output: {dataType: 'int32', dimensions: []}
+        '[reduce] Throw if the input data type is not one of the {float32, float16, int32, uint32}.',
+    input: {dataType: 'int64', dimensions: [1, 2, 5, 5]},
+    options: {
+      axes: [0, 1],
+    },
+  },
+];
+
+const kNoTypeRestrictOperatorsTests = [
+  {
+    name: '[reduce] Test reduce when input\'s datatype is int64.',
+    input: {dataType: 'int64', dimensions: [1, 3, 4, 4]},
+    output: {dataType: 'int64', dimensions: []}
+  },
+  {
+    name: '[reduce] Test reduce when input\'s datatype is uint64.',
+    input: {dataType: 'uint64', dimensions: [1, 3, 4, 4]},
+    output: {dataType: 'uint64', dimensions: []}
+  },
+  {
+    name: '[reduce] Test reduce when input\'s datatype is int8.',
+    input: {dataType: 'int8', dimensions: [1, 3, 4, 4]},
+    output: {dataType: 'int8', dimensions: []}
+  },
+  {
+    name: '[reduce] Test reduce when input\'s datatype is uint8.',
+    input: {dataType: 'uint8', dimensions: [1, 3, 4, 4]},
+    output: {dataType: 'uint8', dimensions: []}
   },
 ];
 
@@ -122,6 +159,10 @@ kFloatRestrictReductionOperators.forEach((operatorName) => {
   runReductionTests(operatorName, kFloatRestrictOperatorsTests);
 });
 
-kFloatAllowReductionOperators.forEach((operatorName) => {
-  runReductionTests(operatorName, kFloatAllowOperatorsTests);
+kFloatInt32Uint32RestrictReductionOperators.forEach((operatorName) => {
+  runReductionTests(operatorName, kFloatInt32Uint32RestrictOperatorsTests);
+});
+
+kNoTypeRestrictReductionOperators.forEach((operatorName) => {
+  runReductionTests(operatorName, kNoTypeRestrictOperatorsTests);
 });
diff --git a/tests/wpt/tests/webvtt/api/VTTCue/region.html b/tests/wpt/tests/webvtt/api/VTTCue/region.html
index ae51c5f6039..8196858bc56 100644
--- a/tests/wpt/tests/webvtt/api/VTTCue/region.html
+++ b/tests/wpt/tests/webvtt/api/VTTCue/region.html
@@ -29,7 +29,9 @@ test(function(){
     cue.region = region;
     assert_equals(cue.region, region);
 
-    cue.region = 'foo';
+    assert_throws_js(TypeError, () => {
+        cue.region = 'foo';
+    });
     assert_equals(cue.region, region);
 
     cue.region = null;