From 86c37a380b6dc43c73ba353a6294e37e62fbec2f Mon Sep 17 00:00:00 2001
From: Servo WPT Sync <32481905+servo-wpt-sync@users.noreply.github.com>
Date: Sun, 10 Aug 2025 13:09:48 +0200
Subject: [PATCH] Sync WPT with upstream (10-08-2025) (#38583)

Automated downstream sync of changes from upstream as of 10-08-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
---
 tests/wpt/meta/MANIFEST.json                  |  716 ++++++++---
 ...l-allowed-by-hash-long-script.sub.html.ini |    4 +
 ...ations-color-neutral-keyframe-004.html.ini |    3 +
 ...ations-color-neutral-keyframe-005.html.ini |    3 +
 ...olor-interpolation-conversion-001.html.ini |    3 +
 ...olor-interpolation-conversion-002.html.ini |    3 +
 ...or-interpolation-conversion-crash.html.ini |    2 +
 ...interpolation-multiple-values-001.html.ini |  144 +++
 ...color-interpolation-repeaters-001.html.ini | 1098 +++++++++++++++++
 ...idth-interpolation-conversion-001.html.ini |    3 +
 ...idth-interpolation-conversion-002.html.ini |    3 +
 .../parsing/rule-overlap-computed.html.ini    |    6 +
 .../parsing/rule-overlap-valid.html.ini       |    6 +
 .../rule-paint-order-computed.html.ini        |    6 -
 .../parsing/rule-paint-order-valid.html.ini   |    6 -
 .../order/masonry-order-001.html.ini          |    2 +
 ...lumns-repeat-auto-valid.tentative.html.ini |   12 -
 ...-repeat-intrinsic-valid.tentative.html.ini |   48 +
 ...-rows-repeat-auto-valid.tentative.html.ini |   12 -
 ...-repeat-intrinsic-valid.tentative.html.ini |   48 +
 .../css/css-mixins/contents-rule.html.ini     |   15 +
 .../css/css-mixins/cross-stylesheet.html.ini  |    3 +
 .../meta/css/css-mixins/shadow-dom.html.ini   |    9 +
 .../replaced-object-backdrop.html.ini         |    2 +
 .../parsing/text-autospace-computed.html.ini  |   78 ++
 .../elementsFromPoint-iframes.html.ini        |    6 -
 .../elementsFromPoint-invalid-cases.html.ini  |    3 -
 ...t-constructable-with-style-recalc.html.ini |    3 +
 .../StyleSheetList-constructable.html.ini     |    3 +
 .../css/cssom/caretPositionFromPoint.html.ini |   12 +
 .../navigating-across-documents/008.html.ini  |    3 +
 ...c-aboutblank-navigate-immediately.html.ini |    6 +
 .../load-pageshow-events-window-open.html.ini |    3 +
 .../tentative/template-patch-range.html.ini   |    9 +
 .../supported-elements.html.ini               |    3 +-
 ...ading-lazy-reload-location-reload.html.ini |    3 +
 .../iframe_sandbox_popups_escaping-1.html.ini |    1 +
 ...rame_sandbox_popups_nonescaping-2.html.ini |    2 +-
 .../animated-webp-update.tentative.html.ini   |    2 +
 .../the-video-element/intrinsic_sizes.htm.ini |    3 -
 .../html/semantics/forms/historical.html.ini  |    3 -
 .../popover-nested-in-button.html.ini         |    3 +
 ...eudo-element-appearance.tentative.html.ini |    2 +
 .../meta/preload/prefetch-document.html.ini   |    3 -
 .../meta/preload/preload-error.sub.html.ini   |   12 +-
 .../meta/reporting/crashReport-test.html.ini  |   24 +
 .../change-layout-in-error.html.ini           |    3 -
 .../meta/resize-observer/eventloop.html.ini   |    2 +-
 .../Selection-getComposedRanges.html.ini      |    3 +
 .../idlharness.https.any.js.ini               |   15 -
 ...-caretPositionFromPoint.tentative.html.ini |    3 +
 .../sub-sample-buffer-stitching.html.ini      |   12 +
 .../audioparam-close.html.ini                 |    6 +
 .../audioparam-summingjunction.html.ini       |    3 +
 .../Worker/Worker-constructor.html.ini        |    2 +
 .../IndexedDB/resources/support-get-all.js    |   24 -
 ...bility-available.tentative.https.window.js |    4 +-
 ...bility-available.tentative.https.window.js |    4 +-
 ...bility-available.tentative.https.window.js |    4 +-
 .../eval-allowed-by-hash-long-script.sub.html |   24 +
 .../partitioned-cookies.tentative.https.html  |    6 +-
 .../cookieListItem_attributes.https.any.js    |  142 +--
 .../cookieListItem_attributes.https.window.js |  201 +++
 .../cookieStore_delete_arguments.https.any.js |    9 +
 .../cookieStore_getAll_arguments.https.any.js |   11 +
 .../cookieStore_get_arguments.https.any.js    |   10 +
 .../cookieStore_set_arguments.https.any.js    |   39 +-
 ...kieStore_set_domain_parsing.sub.https.html |    2 -
 ...et_domain_parsing.tentative.sub.https.html |    2 -
 .../domain_parsing-child.sub.https.html       |    2 -
 tests/wpt/tests/css/CSS2/i18n/META.yml        |    2 +-
 ...r-center-fallback-transition-behavior.html |   14 +-
 .../anchor-getComputedStyle-004.html          |   54 +
 ...seudo-element-implicit-anchor-dynamic.html |   38 +
 ...ea-pseudo-element-implicit-anchor-ref.html |   31 +
 ...n-area-pseudo-element-implicit-anchor.html |   23 +-
 .../js/CSS-supports-CSSStyleDeclaration.html  |    1 -
 .../css/css-contain/contain-size-014.html     |   32 +
 .../wpt/tests/css/css-counter-styles/META.yml |    2 +-
 ...ecorations-color-neutral-keyframe-004.html |   25 +
 ...ecorations-color-neutral-keyframe-005.html |   25 +
 ...le-color-interpolation-conversion-001.html |   49 +
 ...le-color-interpolation-conversion-002.html |   49 +
 ...-color-interpolation-conversion-crash.html |   34 +
 ...lor-interpolation-multiple-values-001.html |   59 +
 ...ule-color-interpolation-repeaters-001.html |  121 ++
 ...le-width-interpolation-conversion-001.html |   50 +
 ...le-width-interpolation-conversion-002.html |   50 +
 .../flex/flex-gap-decorations-012.html        |    2 +-
 .../flex/flex-gap-decorations-015.html        |    2 +-
 .../flex/flex-gap-decorations-016.html        |    2 +-
 .../grid/grid-gap-decorations-023.html        |    2 +-
 .../subgrid/subgrid-gap-decorations-017.html  |    4 +-
 ...mputed.html => rule-overlap-computed.html} |    6 +-
 ...invalid.html => rule-overlap-invalid.html} |   12 +-
 ...der-valid.html => rule-overlap-valid.html} |    6 +-
 .../masonry-align-content-001-ref.html        |   33 +
 .../alignment/masonry-align-content-001.html  |   31 +
 .../masonry-align-content-002-ref.html        |   33 +
 .../alignment/masonry-align-content-002.html  |   33 +
 .../masonry-align-content-003-ref.html        |   32 +
 .../alignment/masonry-align-content-003.html  |   32 +
 .../masonry-align-content-004-ref.html        |   32 +
 .../alignment/masonry-align-content-004.html  |   32 +
 .../masonry-justify-content-001-ref.html      |   33 +
 .../masonry-justify-content-001.html          |   32 +
 .../masonry-justify-content-002-ref.html      |   32 +
 .../masonry-justify-content-002.html          |   31 +
 .../masonry-justify-content-003-ref.html      |   33 +
 .../masonry-justify-content-003.html          |   33 +
 .../masonry-justify-content-004-ref.html      |   32 +
 .../masonry-justify-content-004.html          |   32 +
 .../order/masonry-order-001-ref.html          |   23 +-
 .../grid-template-columns-invalid.html        |    3 +
 ...e-columns-repeat-auto-valid.tentative.html |   22 -
 ...umns-repeat-intrinsic-valid.tentative.html |   37 +
 .../parsing/grid-template-rows-invalid.html   |    3 +
 ...late-rows-repeat-auto-valid.tentative.html |   22 -
 ...rows-repeat-intrinsic-valid.tentative.html |   39 +
 .../tests/css/css-mixins/contents-rule.html   |   87 ++
 .../css/css-mixins/cross-stylesheet.html      |   29 +
 .../wpt/tests/css/css-mixins/shadow-dom.html  |   75 ++
 ...relpos-in-abspos-multicol-in-multicol.html |   15 +
 .../scroll-button-disposed-event-target.html  |   63 +
 .../scroll-button-event-target.html           |   65 +
 .../scroll-marker-disposed-event-target.html  |   70 ++
 .../scroll-marker-event-target.html           |   71 ++
 .../overscroll-behavior.html                  |  208 ++--
 .../replaced-object-backdrop.html             |   13 +
 .../resnap-on-reconstructing-frame.html       |    5 +
 tests/wpt/tests/css/css-text/META.yml         |    2 +-
 tests/wpt/tests/css/css-text/i18n/META.yml    |    2 +-
 .../parsing/text-autospace-computed.html      |   35 +
 .../parsing/text-autospace-invalid.html       |    6 +
 .../parsing/text-autospace-valid.html         |   37 +-
 .../tab-size/tab-size-spacing-003.html        |    4 +-
 .../starting-style-first-letter-crash.html    |   13 +
 .../css/css-view-transitions/idlharness.html  |   32 +
 .../scoped/crashtests/display-inline.html     |   43 +
 .../scoped/crashtests/mask-image.html         |   46 +
 .../scoped/display-inline-block.html          |   45 +
 .../wpt/tests/css/css-writing-modes/META.yml  |    2 +-
 ...tList-constructable-with-style-recalc.html |   26 +
 .../cssom/StyleSheetList-constructable.html   |   24 +
 .../css/cssom/caretPositionFromPoint.html     |   52 +-
 tests/wpt/tests/css/reference/green.html      |    3 +
 tests/wpt/tests/css/selectors/i18n/META.yml   |    2 +-
 .../allow-attribute-with-get.https.html       |   13 +-
 ...rigin-by-permissions-policy.https.sub.html |    1 +
 .../domparser-spurious-attributes.html        |   28 +
 ...input_event_with_insertfrompaste_type.html |   52 +
 .../other/paste-with-newline-three-times.html |   41 +
 .../login-page-broken.https.html              |    3 +-
 .../fullscreen/rendering/backdrop-object.html |    3 +
 .../nameditem-no-shadowing.tentative.html     |   11 +
 .../tentative/current-patch.html              |    2 +-
 .../tentative/patch-range.html                |   10 +-
 .../partial-updates/tentative/patch-self.html |    4 +-
 .../tentative/template-patch-range.html       |   53 +
 .../classic-external-unknown-scheme.html      |   22 +
 .../animated-image-update.tentative.html      |   14 +-
 .../animated-webp-update.tentative.html       |   14 +-
 .../the-img-element/resources/animated.gif    |  Bin 311 -> 292 bytes
 .../the-img-element/resources/animated.webp   |  Bin 152 -> 286 bytes
 ...ocus-navigation-group-focusable-focus.html |    1 +
 ...mizable-select-in-page-appearance-ref.html |    5 -
 .../resources/customizable-select-in-page.css |    1 -
 .../resources/customizable-select-in-page.js  |   13 -
 .../border-radius-bounds-ref.html             |   12 +
 .../border-radius-bounds.tentative.html       |   17 +
 .../popovers/popover-nested-in-button.html    |   21 +
 .../cors-crossorigin-requests.html            |   29 +-
 ...restfor-pseudo-element-appearance-ref.html |   65 +
 ...r-pseudo-element-appearance.tentative.html |   43 +
 .../interestfor-pseudo-element.tentative.html |   96 ++
 ...tion-timing-lock.https.tentative.window.js |    1 +
 ...erevent_touch-adjustment_click_target.html |   10 +-
 .../wpt/tests/reporting/crashReport-test.html |  142 +++
 .../css/chrome-40925697.html                  |   47 +
 .../Selection-getComposedRanges.html          |    2 +-
 ...ment-caretPositionFromPoint.tentative.html |    2 +-
 .../prerender/resources/exec.py               |    4 +-
 .../svg/crashtests/firefox-bug-1980267.html   |   12 +
 .../svg/path/interfaces/SVGPathSegment.svg    |    8 +
 .../types/scripted/SVGAnimatedInteger.html    |   13 +
 tests/wpt/tests/tools/certs/cacert.key        |   56 +-
 tests/wpt/tests/tools/certs/cacert.pem        |  170 +--
 .../tests/tools/certs/web-platform.test.key   |   52 +-
 .../tests/tools/certs/web-platform.test.pem   |  180 +--
 tests/wpt/tests/tools/docker/README.md        |   12 +-
 .../webdriver/bidi/modules/network.py         |   25 +
 .../tests/tools/wptrunner/requirements.txt    |    1 +
 .../wptrunner/browsers/chrome_spki_certs.py   |    2 +-
 .../wptrunner/wptrunner/browsers/firefox.py   |    9 +-
 .../wptrunner/browsers/firefox_android.py     |   10 +-
 .../wptrunner/executors/executorchrome.py     |    4 +-
 .../wptrunner/executors/executormarionette.py |  121 +-
 .../wptrunner/executors/executorwebdriver.py  |  236 ++--
 .../wptrunner/wptrunner/executors/protocol.py |   23 +
 .../tools/wptrunner/wptrunner/testrunner.py   |   14 +-
 .../wptrunner/wptrunner/wptcommandline.py     |    8 +
 .../tools/wptrunner/wptrunner/wptrunner.py    |    1 +
 .../tests/webaudio/resources/audit-util.js    |   17 +
 .../audioparam-close.html                     |  220 ++--
 .../audioparam-summingjunction.html           |   76 +-
 .../context_created/context_created.py        |   43 -
 .../context_created/subscribe_steps.py        |  172 +++
 .../navigation_committed.py                   |   29 +
 .../add_data_collector/add_data_collector.py  |   16 +
 .../network/add_data_collector/contexts.py    |   99 ++
 .../network/add_data_collector/invalid.py     |   21 +
 .../max_encoded_data_size.py                  |   50 +
 .../add_data_collector/user_contexts.py       |  140 +++
 .../tests/bidi/network/get_data/__init__.py   |    0
 .../tests/bidi/network/get_data/collector.py  |   40 +
 .../tests/bidi/network/get_data/disown.py     |   60 +
 .../tests/bidi/network/get_data/invalid.py    |   81 ++
 .../tests/bidi/network/get_data/request.py    |   29 +
 .../remove_data_collector/collector.py        |   32 +-
 .../webdriver/tests/support/fixtures_bidi.py  |   84 ++
 .../conformance_tests/clamp.https.any.js      |    4 +-
 .../webnn/conformance_tests/pad.https.any.js  |   32 +-
 .../RTCSctpTransport-maxMessageSize.html      |  232 ++--
 223 files changed, 7100 insertions(+), 1428 deletions(-)
 create mode 100644 tests/wpt/meta/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-001.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-002.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-001.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-002.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/parsing/rule-overlap-computed.html.ini
 create mode 100644 tests/wpt/meta/css/css-gaps/parsing/rule-overlap-valid.html.ini
 delete mode 100644 tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-computed.html.ini
 delete mode 100644 tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-valid.html.ini
 create mode 100644 tests/wpt/meta/css/css-grid/masonry/tentative/order/masonry-order-001.html.ini
 delete mode 100644 tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html.ini
 create mode 100644 tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html.ini
 delete mode 100644 tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html.ini
 create mode 100644 tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html.ini
 create mode 100644 tests/wpt/meta/css/css-mixins/contents-rule.html.ini
 create mode 100644 tests/wpt/meta/css/css-mixins/cross-stylesheet.html.ini
 create mode 100644 tests/wpt/meta/css/css-mixins/shadow-dom.html.ini
 create mode 100644 tests/wpt/meta/css/css-position/replaced-object-backdrop.html.ini
 delete mode 100644 tests/wpt/meta/css/cssom-view/elementsFromPoint-iframes.html.ini
 delete mode 100644 tests/wpt/meta/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
 create mode 100644 tests/wpt/meta/css/cssom/StyleSheetList-constructable-with-style-recalc.html.ini
 create mode 100644 tests/wpt/meta/css/cssom/StyleSheetList-constructable.html.ini
 create mode 100644 tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini
 create mode 100644 tests/wpt/meta/html/dom/partial-updates/tentative/template-patch-range.html.ini
 create mode 100644 tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html.ini
 create mode 100644 tests/wpt/meta/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html.ini
 delete mode 100644 tests/wpt/meta/html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm.ini
 delete mode 100644 tests/wpt/meta/html/semantics/forms/historical.html.ini
 create mode 100644 tests/wpt/meta/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html.ini
 create mode 100644 tests/wpt/meta/reporting/crashReport-test.html.ini
 delete mode 100644 tests/wpt/meta/resize-observer/change-layout-in-error.html.ini
 create mode 100644 tests/wpt/meta/workers/constructors/Worker/Worker-constructor.html.ini
 create mode 100644 tests/wpt/tests/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html
 create mode 100644 tests/wpt/tests/cookiestore/cookieListItem_attributes.https.window.js
 create mode 100644 tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-004.html
 create mode 100644 tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-dynamic.html
 create mode 100644 tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-ref.html
 create mode 100644 tests/wpt/tests/css/css-contain/contain-size-014.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-001.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-002.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-001.html
 create mode 100644 tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-002.html
 rename tests/wpt/tests/css/css-gaps/parsing/{rule-paint-order-computed.html => rule-overlap-computed.html} (72%)
 rename tests/wpt/tests/css/css-gaps/parsing/{rule-paint-order-invalid.html => rule-overlap-invalid.html} (57%)
 rename tests/wpt/tests/css/css-gaps/parsing/{rule-paint-order-valid.html => rule-overlap-valid.html} (70%)
 delete mode 100644 tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html
 create mode 100644 tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html
 delete mode 100644 tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html
 create mode 100644 tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html
 create mode 100644 tests/wpt/tests/css/css-mixins/contents-rule.html
 create mode 100644 tests/wpt/tests/css/css-mixins/cross-stylesheet.html
 create mode 100644 tests/wpt/tests/css/css-mixins/shadow-dom.html
 create mode 100644 tests/wpt/tests/css/css-multicol/crashtests/spanner-in-relpos-in-abspos-multicol-in-multicol.html
 create mode 100644 tests/wpt/tests/css/css-overflow/scroll-button-disposed-event-target.html
 create mode 100644 tests/wpt/tests/css/css-overflow/scroll-button-event-target.html
 create mode 100644 tests/wpt/tests/css/css-overflow/scroll-marker-disposed-event-target.html
 create mode 100644 tests/wpt/tests/css/css-overflow/scroll-marker-event-target.html
 create mode 100644 tests/wpt/tests/css/css-position/replaced-object-backdrop.html
 create mode 100644 tests/wpt/tests/css/css-transitions/starting-style-first-letter-crash.html
 create mode 100644 tests/wpt/tests/css/css-view-transitions/idlharness.html
 create mode 100644 tests/wpt/tests/css/css-view-transitions/scoped/crashtests/display-inline.html
 create mode 100644 tests/wpt/tests/css/css-view-transitions/scoped/crashtests/mask-image.html
 create mode 100644 tests/wpt/tests/css/css-view-transitions/scoped/display-inline-block.html
 create mode 100644 tests/wpt/tests/css/cssom/StyleSheetList-constructable-with-style-recalc.html
 create mode 100644 tests/wpt/tests/css/cssom/StyleSheetList-constructable.html
 create mode 100644 tests/wpt/tests/css/reference/green.html
 create mode 100644 tests/wpt/tests/domparsing/domparser-spurious-attributes.html
 create mode 100644 tests/wpt/tests/editing/other/data_transfer_on_input_event_with_insertfrompaste_type.html
 create mode 100644 tests/wpt/tests/editing/other/paste-with-newline-three-times.html
 create mode 100644 tests/wpt/tests/html/dom/partial-updates/tentative/template-patch-range.html
 create mode 100644 tests/wpt/tests/html/scripting/the-script-element/classic-external-unknown-scheme.html
 delete mode 100644 tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.js
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/border-radius-bounds-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/permission-element/border-radius-bounds.tentative.html
 create mode 100644 tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance-ref.html
 create mode 100644 tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html
 create mode 100644 tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element.tentative.html
 create mode 100644 tests/wpt/tests/reporting/crashReport-test.html
 create mode 100644 tests/wpt/tests/scroll-animations/css/chrome-40925697.html
 create mode 100644 tests/wpt/tests/svg/crashtests/firefox-bug-1980267.html
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/subscribe_steps.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/add_data_collector.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/contexts.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/max_encoded_data_size.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/user_contexts.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/get_data/__init__.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/get_data/collector.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/get_data/disown.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/get_data/invalid.py
 create mode 100644 tests/wpt/tests/webdriver/tests/bidi/network/get_data/request.py

diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index 169f13461d2..43a51426dd6 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
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@@ -4107,6 +4116,13 @@
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@@ -5831,6 +5847,13 @@
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     "css-typed-om": {
@@ -6170,6 +6193,13 @@
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@@ -6177,6 +6207,13 @@
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+     "data_transfer_on_input_event_with_insertfrompaste_type.html": [
+      "6c62c64294cf13d3128879ce13f1ba6b1867848b",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
      "delete-at-end-boundary-of-div-followed-by-inline-element-containing-hidden-select-element-with-non-editable-node.html": [
       "5c362d4963f6c2ccc955a38775ff4a054ff65b53",
       [
@@ -641495,6 +641803,15 @@
        }
       ]
      ],
+     "paste-with-newline-three-times.html": [
+      "c383a344c82b3c6d78c1f9b9ef9793d8d2939e48",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
      "paste_text_with_text_transform.html": [
       "17d83fee288737ddb570e7b4e8852ff14a89eec0",
       [
@@ -659084,7 +659401,7 @@
       ]
      ],
      "login-page-broken.https.html": [
-      "06be5e48ed3b8a20c66d778ed4afbeb98165989d",
+      "445b9e4e3874c7d3dbc72bd7dbb0c654f9387f27",
       [
        null,
        {
@@ -731449,7 +731766,7 @@
         ]
        ],
        "nameditem-no-shadowing.tentative.html": [
-        "dd56ca3628fb5ab4dac5bcddea7044409f1db822",
+        "8bb9999e81fea0adedd13d8f0a20a8aed9c90448",
         [
          null,
          {}
@@ -732093,7 +732410,7 @@
      "partial-updates": {
       "tentative": {
        "current-patch.html": [
-        "dc6a14b9756095532103dece4ab4d9a9843e1937",
+        "8a1aa6d4908ed0611efe9e14cefc13523a764d24",
         [
          null,
          {}
@@ -732114,14 +732431,14 @@
         ]
        ],
        "patch-range.html": [
-        "bf05c2b6fbd5e4ed95aa01ce68b721cb9480a674",
+        "4cb80a2b85e5a0b35c6e033892c7ea08f678d789",
         [
          null,
          {}
         ]
        ],
        "patch-self.html": [
-        "e5938b69554929a91caafdfefcbef469ee0e8555",
+        "68abc9605000e625c6e17f4b133070f12449c291",
         [
          null,
          {}
@@ -732141,6 +732458,13 @@
          {}
         ]
        ],
+       "template-patch-range.html": [
+        "e39afca15d69af2357091ce9be1dae5d65f25022",
+        [
+         null,
+         {}
+        ]
+       ],
        "template-patchfor-innerHTML-ambiguous.html": [
         "f83395850de49835ddfda11449ebf52c9a49d9fa",
         [
@@ -736901,6 +737225,13 @@
         null,
         {}
        ]
+      ],
+      "classic-external-unknown-scheme.html": [
+       "e158721d0359181275592862b11f0e0f8229afe3",
+       [
+        null,
+        {}
+       ]
       ]
      }
     },
@@ -744477,11 +744808,12 @@
         ]
        ],
        "radio-focus-navigation-group-focusable-focus.html": [
-        "7885332cc4b8dbfd55d730c23f14504cb6d29e11",
+        "e056f15a22a6c97a758a94139100cb56909818d6",
         [
          null,
          {
-          "testdriver": true
+          "testdriver": true,
+          "timeout": "long"
          }
         ]
        ],
@@ -747339,7 +747671,7 @@
        ]
       ],
       "popover-nested-in-button.html": [
-       "ed4cb78f8c8a87ff6a34541667e53ca5b5e2db79",
+       "4ea6a4ed4e95570cfe6628eb320006a4298991fb",
        [
         null,
         {}
@@ -749031,7 +749363,7 @@
          ]
         ],
         "cors-crossorigin-requests.html": [
-         "7a0f340f40597d3cf614834d4aead58a42b6d0f4",
+         "ca33b1eab7966c9daf4fd835c21c220bb9583d97",
          [
           null,
           {}
@@ -752390,6 +752722,15 @@
          }
         ]
        ],
+       "interestfor-pseudo-element.tentative.html": [
+        "8faeec0e080c8ea37d375003e30d580fe77a88d4",
+        [
+         null,
+         {
+          "testdriver": true
+         }
+        ]
+       ],
        "interestfor-show-delay.tentative.html": [
         "ccc9a28fcecde8ccc09060f21e0d9468a4cc122e",
         [
@@ -778309,7 +778650,7 @@
       ]
      ],
      "performance-navigation-timing-lock.https.tentative.window.js": [
-      "46d8752f20d9674f64999c2693ae60855f07dc9b",
+      "51a44db11b5e5dff51fb5a0afde0642e4cc045d7",
       [
        "performance-timeline/not-restored-reasons/performance-navigation-timing-lock.https.tentative.window.html",
        {
@@ -782661,7 +783002,7 @@
      ]
     ],
     "pointerevent_touch-adjustment_click_target.html": [
-     "46d5ac1793be0445bd2968c50ebf949e1ba2202f",
+     "73214f1edbaba44e9c40460424b79851b9da69ce",
      [
       null,
       {
@@ -796135,6 +796476,13 @@
       }
      ]
     ],
+    "crashReport-test.html": [
+     "520c4ddf376b6d1164fc171f1aa0c259bc5627e2",
+     [
+      null,
+      {}
+     ]
+    ],
     "cross-origin-report-no-credentials.https.sub.html": [
      "f10d4cef3e47870fe03ce66b64df99efbc97cfe4",
      [
@@ -800421,6 +800769,13 @@
        {}
       ]
      ],
+     "chrome-40925697.html": [
+      "2e86bb0fb2e19a37c9a94b09cb65ef8dc526e80a",
+      [
+       null,
+       {}
+      ]
+     ],
      "get-animations-inactive-timeline.html": [
       "83bc5b5f531be108c743cdc75c77d0b6ae6bc5bd",
       [
@@ -802527,7 +802882,7 @@
        ]
       ],
       "Selection-getComposedRanges.html": [
-       "8c0f2bb8e15cde9482c119b198abe4b643b846de",
+       "63e6d41cd77b0fdd41ebd2bc9aa7a06fb25016ff",
        [
         null,
         {}
@@ -806262,7 +806617,7 @@
    },
    "shadow-dom": {
     "Document-caretPositionFromPoint.tentative.html": [
-     "b01bc0ae6edfef1fedfcfeb5f1aeab94178d8895",
+     "2a508b295fd248fccac8bdad455139424dc3633c",
      [
       null,
       {}
@@ -829852,7 +830207,7 @@
        ]
       ],
       "SVGPathSegment.svg": [
-       "a4f67363dc3b179fa8bd46ec1692a7d8eff9e701",
+       "d0f8034d50e152624ac4f327dd871680ba62b5bb",
        [
         null,
         {}
@@ -830623,7 +830978,7 @@
        ]
       ],
       "SVGAnimatedInteger.html": [
-       "849c13d3671df44b759729572c76f5965965865c",
+       "e8e8b30a7a5d38022145d4d704fcda84044d6653",
        [
         null,
         {}
@@ -851249,7 +851604,7 @@
        ]
       ],
       "audioparam-close.html": [
-       "b5555b0137af4c1c8f6c5578de4bc9c5eedfe405",
+       "4586ffebf640d052a1111e5ad8f4fc305445ecdc",
        [
         null,
         {}
@@ -851340,7 +851695,7 @@
        ]
       ],
       "audioparam-summingjunction.html": [
-       "9084942f7032cd00d9d57b8d4d1f6ba2742ab57f",
+       "5bdc1a14843d707c5dc3385a4ff287dcf5adacbe",
        [
         null,
         {}
@@ -865220,7 +865575,7 @@
       ]
      ],
      "clamp.https.any.js": [
-      "cf77b67aa0e981e9e8aa37554f4921ca410a71d8",
+      "b1e338dbecf9f7bea761f532d0b9cce919271eb8",
       [
        "webnn/conformance_tests/clamp.https.any.html?cpu",
        {
@@ -871640,7 +871995,7 @@
       ]
      ],
      "pad.https.any.js": [
-      "750e4aee617cfe4193fed8c66f7e382f696bd154",
+      "55c6077e805ffac08757645dfba5c1ac6fdf2510",
       [
        "webnn/conformance_tests/pad.https.any.html?cpu",
        {
@@ -894667,7 +895022,7 @@
      ]
     ],
     "RTCSctpTransport-maxMessageSize.html": [
-     "99767611509197a3d1037957551fea397ecad21e",
+     "572446a1cbe2043ab92c2a9a89d0c874d7b4b79f",
      [
       null,
       {}
@@ -941282,7 +941637,7 @@
        },
        "context_created": {
         "context_created.py": [
-         "55bb195c6e20aede1eb86dc15184d68337bbdaeb",
+         "ac88dea9c7e1f73c8d1af542af0c891f97c49e6e",
          [
           null,
           {}
@@ -941294,6 +941649,13 @@
           null,
           {}
          ]
+        ],
+        "subscribe_steps.py": [
+         "ef7ff0ceea6e3d1943bd659c0d86602806e986a6",
+         [
+          null,
+          {}
+         ]
         ]
        },
        "context_destroyed": {
@@ -941581,7 +941943,7 @@
        },
        "navigation_committed": {
         "navigation_committed.py": [
-         "9ac997bc6c093ae28c75ae79ebbc5a05a2653ffe",
+         "af002333fe34e977d47e4faaff8ff951ee30518b",
          [
           null,
           {}
@@ -942463,8 +942825,36 @@
       },
       "network": {
        "add_data_collector": {
+        "add_data_collector.py": [
+         "0670eff61dc826774262991cfab0166e2322dd61",
+         [
+          null,
+          {}
+         ]
+        ],
+        "contexts.py": [
+         "c204fe76fa3d13f06f10c50acd6b5d6161738347",
+         [
+          null,
+          {}
+         ]
+        ],
         "invalid.py": [
-         "aa6a19e3241668b093c8ce99866ebeb4a74012ba",
+         "ee13a7d97d885497aa1b5f374afc773cfa14a654",
+         [
+          null,
+          {}
+         ]
+        ],
+        "max_encoded_data_size.py": [
+         "7c493ed31c8034ad57db7577b16d379cea917023",
+         [
+          null,
+          {}
+         ]
+        ],
+        "user_contexts.py": [
+         "727db98c369e400425dbcf24178bf4859fdbf8c4",
          [
           null,
           {}
@@ -942703,6 +943093,36 @@
          ]
         ]
        },
+       "get_data": {
+        "collector.py": [
+         "700a94fa86491fbb03d184cb15b9e9de0bdc5b7a",
+         [
+          null,
+          {}
+         ]
+        ],
+        "disown.py": [
+         "0e9917017032ed698c649ac7370c9811388a8250",
+         [
+          null,
+          {}
+         ]
+        ],
+        "invalid.py": [
+         "2ee725bef97787d1ec67681ffeab18330128eed1",
+         [
+          null,
+          {}
+         ]
+        ],
+        "request.py": [
+         "8a0d0f5cf908c961fef40735ad2d6a2633af1d7f",
+         [
+          null,
+          {}
+         ]
+        ]
+       },
        "provide_response": {
         "body.py": [
          "45b248362857dbf6b8790d987cd6b0e8ef53c654",
@@ -942758,7 +943178,7 @@
        },
        "remove_data_collector": {
         "collector.py": [
-         "50ecc311d7ba9cce6cd3dfa30093202d61ba144e",
+         "ef42efaa93033797124123a498d780f04cde3f73",
          [
           null,
           {}
diff --git a/tests/wpt/meta/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html.ini b/tests/wpt/meta/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html.ini
new file mode 100644
index 00000000000..ff1357f11c1
--- /dev/null
+++ b/tests/wpt/meta/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html.ini
@@ -0,0 +1,4 @@
+[eval-allowed-by-hash-long-script.sub.html]
+  expected: ERROR
+  [Expecting alerts: ["PASS, long text that exceeds the 40 character limit used for report snippets"\]]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html.ini b/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html.ini
new file mode 100644
index 00000000000..76c31cf34d5
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html.ini
@@ -0,0 +1,3 @@
+[gap-decorations-color-neutral-keyframe-004.html]
+  [gap decorations row-rule-color value list supports neutral keyframe.]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html.ini b/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html.ini
new file mode 100644
index 00000000000..5d628096db1
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html.ini
@@ -0,0 +1,3 @@
+[gap-decorations-color-neutral-keyframe-005.html]
+  [gap decorations row-rule-color value list supports neutral keyframe.]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-001.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-001.html.ini
new file mode 100644
index 00000000000..b8888621137
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-001.html.ini
@@ -0,0 +1,3 @@
+[rule-color-interpolation-conversion-001.html]
+  [CSS gap color change computed value to non compatible value mid-animation]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-002.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-002.html.ini
new file mode 100644
index 00000000000..85d957e9bf2
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-002.html.ini
@@ -0,0 +1,3 @@
+[rule-color-interpolation-conversion-002.html]
+  [CSS gap color change computed value to compatible value mid-animation]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html.ini
new file mode 100644
index 00000000000..42e1f940b70
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html.ini
@@ -0,0 +1,2 @@
+[rule-color-interpolation-conversion-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html.ini
new file mode 100644
index 00000000000..86acc23f567
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html.ini
@@ -0,0 +1,144 @@
+[rule-color-interpolation-multiple-values-001.html]
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (-0.3) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (0) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (0.3) should be [rgb(77, 0, 0) rgb(77, 0, 0) rgb(77, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (0.6) should be [rgb(153, 0, 0) rgb(153, 0, 0) rgb(153, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (1) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red red red\] at (1.5) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (-0.3) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (0) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (0.3) should be [rgb(77, 0, 0) rgb(77, 0, 0) rgb(77, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (0.6) should be [rgb(153, 0, 0) rgb(153, 0, 0) rgb(153, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (1) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red red red\] at (1.5) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (-0.3) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (0) should be [black black black\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (0.3) should be [rgb(77, 0, 0) rgb(77, 0, 0) rgb(77, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (0.6) should be [rgb(153, 0, 0) rgb(153, 0, 0) rgb(153, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (1) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red red red\] at (1.5) should be [red red red\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (-0.3) should be [black black black\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (0) should be [black black black\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (0.3) should be [rgb(77, 0, 0) rgb(77, 0, 0) rgb(77, 0, 0)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (0.6) should be [rgb(153, 0, 0) rgb(153, 0, 0) rgb(153, 0, 0)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (1) should be [red red red\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red red red\] at (1.5) should be [red red red\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (-0.3) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (0) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (0.3) should be [rgb(77, 0, 0) rgb(179, 0, 77) rgb(77, 0, 179)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (0.6) should be [rgb(153, 0, 0) rgb(102, 0, 153) rgb(153, 0, 102)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (1) should be [red blue red\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [red blue red\] at (1.5) should be [red blue red\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (-0.3) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (0) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (0.3) should be [rgb(77, 0, 0) rgb(179, 0, 77) rgb(77, 0, 179)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (0.6) should be [rgb(153, 0, 0) rgb(102, 0, 153) rgb(153, 0, 102)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (1) should be [red blue red\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [red blue red\] at (1.5) should be [red blue red\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (-0.3) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (0) should be [black red blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (0.3) should be [rgb(77, 0, 0) rgb(179, 0, 77) rgb(77, 0, 179)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (0.6) should be [rgb(153, 0, 0) rgb(102, 0, 153) rgb(153, 0, 102)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (1) should be [red blue red\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [red blue red\] at (1.5) should be [red blue red\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (-0.3) should be [black red blue\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (0) should be [black red blue\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (0.3) should be [rgb(77, 0, 0) rgb(179, 0, 77) rgb(77, 0, 179)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (0.6) should be [rgb(153, 0, 0) rgb(102, 0, 153) rgb(153, 0, 102)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (1) should be [red blue red\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [red blue red\] at (1.5) should be [red blue red\]]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html.ini
new file mode 100644
index 00000000000..0b4df598dea
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html.ini
@@ -0,0 +1,1098 @@
+[rule-color-interpolation-repeaters-001.html]
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (-0.3) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.3) should be [rgb(77, 0, 0) repeat(2, rgb(179, 0, 0) rgb(0, 0, 179)) rgb(0, 0, 77)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.6) should be [rgb(153, 0, 0) repeat(2, rgb(102, 0, 0) rgb(0, 0, 102)) rgb(0, 0, 153)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1.5) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (-0.3) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.3) should be [rgb(77, 0, 0) repeat(2, rgb(179, 0, 0) rgb(0, 0, 179)) rgb(0, 0, 77)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.6) should be [rgb(153, 0, 0) repeat(2, rgb(102, 0, 0) rgb(0, 0, 102)) rgb(0, 0, 153)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1.5) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (-0.3) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.3) should be [rgb(77, 0, 0) repeat(2, rgb(179, 0, 0) rgb(0, 0, 179)) rgb(0, 0, 77)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.6) should be [rgb(153, 0, 0) repeat(2, rgb(102, 0, 0) rgb(0, 0, 102)) rgb(0, 0, 153)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1.5) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (-0.3) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0) should be [black repeat(2, red blue) black\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.3) should be [rgb(77, 0, 0) repeat(2, rgb(179, 0, 0) rgb(0, 0, 179)) rgb(0, 0, 77)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (0.6) should be [rgb(153, 0, 0) repeat(2, rgb(102, 0, 0) rgb(0, 0, 102)) rgb(0, 0, 153)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [red repeat(2, black black) blue\] at (1.5) should be [rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (-0.3) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.3) should be [repeat(2, rgb(77, 0, 0) rgb(179, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.6) should be [repeat(2, rgb(153, 0, 0) rgb(102, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1.5) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (-0.3) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.3) should be [repeat(2, rgb(77, 0, 0) rgb(179, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.6) should be [repeat(2, rgb(153, 0, 0) rgb(102, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1.5) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (-0.3) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.3) should be [repeat(2, rgb(77, 0, 0) rgb(179, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.6) should be [repeat(2, rgb(153, 0, 0) rgb(102, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1.5) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (-0.3) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0) should be [repeat(2, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.3) should be [repeat(2, rgb(77, 0, 0) rgb(179, 0, 0))\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (0.6) should be [repeat(2, rgb(153, 0, 0) rgb(102, 0, 0))\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, red black)\] at (1.5) should be [repeat(2, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.3) should be [repeat(auto, rgb(0, 0, 77) rgb(77, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.6) should be [repeat(auto, rgb(0, 0, 153) rgb(153, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1.5) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.3) should be [repeat(auto, rgb(0, 0, 77) rgb(77, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.6) should be [repeat(auto, rgb(0, 0, 153) rgb(153, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1.5) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.3) should be [repeat(auto, rgb(0, 0, 77) rgb(77, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.6) should be [repeat(auto, rgb(0, 0, 153) rgb(153, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0))\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1.5) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.3) should be [repeat(auto, rgb(0, 0, 77) rgb(77, 0, 0))\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (0.6) should be [repeat(auto, rgb(0, 0, 153) rgb(153, 0, 0))\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0))\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, blue red)\] at (1.5) should be [repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (-0.3) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.3) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (-0.3) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.3) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (0.6) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, blue blue) white\] at (1.5) should be [repeat(2, blue blue) white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (-0.3) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.3) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (-0.3) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.3) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (0.6) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [repeat(2, red red) repeat(2, blue blue)\] at (1.5) should be [repeat(2, red red) repeat(2, blue blue)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (-0.3) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.3) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (-0.3) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.3) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (0.6) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(3, white white)\] at (1.5) should be [repeat(3, white white)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (-0.3) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.3) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (-0.3) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.3) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (0.6) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [repeat(2, yellow orange green)\] at (1.5) should be [repeat(2, yellow orange green)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (-0.3) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.3) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (-0.3) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.3) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (0.6) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [black repeat(3, red white) blue\] at (1.5) should be [black repeat(3, red white) blue\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (-0.3) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.3) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (-0.3) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.3) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (0.6) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [Web Animations: property <row-rule-color> from neutral to [white repeat(2, blue blue blue) yellow\] at (1.5) should be [white repeat(2, blue blue blue) yellow\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (-0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.3) should be [repeat(auto, red black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (0.6) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, red black)\] to [repeat(3, black red)\] at (1.5) should be [repeat(3, black red)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (-0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.3) should be [repeat(auto, black black)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (0.6) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from [repeat(auto, black black)\] to [repeat(auto, red white yellow)\] at (1.5) should be [repeat(auto, red white yellow)\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-behavior:allow-discrete: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (-0.3) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (0) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (0.3) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (-0.3) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (0) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (0.3) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [CSS Transitions with transition: all: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [CSS Animations: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [white\] at (0.5) should be [white\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [white\] at (0.6) should be [white\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [white\] at (1) should be [white\]]
+    expected: FAIL
+
+  [Web Animations: property <column-rule-color> from neutral to [white\] at (1.5) should be [white\]]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-001.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-001.html.ini
new file mode 100644
index 00000000000..d6106a136e0
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-001.html.ini
@@ -0,0 +1,3 @@
+[rule-width-interpolation-conversion-001.html]
+  [CSS gap width change computed value to non compatible value mid-animation]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-002.html.ini b/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-002.html.ini
new file mode 100644
index 00000000000..360a39d3ec3
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/animation/rule-width-interpolation-conversion-002.html.ini
@@ -0,0 +1,3 @@
+[rule-width-interpolation-conversion-002.html]
+  [CSS gap width change computed value to non compatible value mid-animation]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-computed.html.ini b/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-computed.html.ini
new file mode 100644
index 00000000000..d58b1d006b8
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-computed.html.ini
@@ -0,0 +1,6 @@
+[rule-overlap-computed.html]
+  [Property gap-rule-overlap value 'row-over-column']
+    expected: FAIL
+
+  [Property gap-rule-overlap value 'column-over-row']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-valid.html.ini b/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-valid.html.ini
new file mode 100644
index 00000000000..7b359c085cc
--- /dev/null
+++ b/tests/wpt/meta/css/css-gaps/parsing/rule-overlap-valid.html.ini
@@ -0,0 +1,6 @@
+[rule-overlap-valid.html]
+  [e.style['gap-rule-overlap'\] = "row-over-column" should set the property value]
+    expected: FAIL
+
+  [e.style['gap-rule-overlap'\] = "column-over-row" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-computed.html.ini b/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-computed.html.ini
deleted file mode 100644
index 26963ba3ba3..00000000000
--- a/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-computed.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[rule-paint-order-computed.html]
-  [Property gap-rule-paint-order value 'row-over-column']
-    expected: FAIL
-
-  [Property gap-rule-paint-order value 'column-over-row']
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-valid.html.ini b/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-valid.html.ini
deleted file mode 100644
index 9582fa9e3e4..00000000000
--- a/tests/wpt/meta/css/css-gaps/parsing/rule-paint-order-valid.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[rule-paint-order-valid.html]
-  [e.style['gap-rule-paint-order'\] = "row-over-column" should set the property value]
-    expected: FAIL
-
-  [e.style['gap-rule-paint-order'\] = "column-over-row" should set the property value]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-grid/masonry/tentative/order/masonry-order-001.html.ini b/tests/wpt/meta/css/css-grid/masonry/tentative/order/masonry-order-001.html.ini
new file mode 100644
index 00000000000..3346f33548e
--- /dev/null
+++ b/tests/wpt/meta/css/css-grid/masonry/tentative/order/masonry-order-001.html.ini
@@ -0,0 +1,2 @@
+[masonry-order-001.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html.ini b/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html.ini
deleted file mode 100644
index d09ccda56cb..00000000000
--- a/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html.ini
+++ /dev/null
@@ -1,12 +0,0 @@
-[grid-template-columns-repeat-auto-valid.tentative.html]
-  [e.style['grid-template-columns'\] = "repeat(auto-fill, auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-columns'\] = "repeat(auto-fit, auto 100px auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-columns'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-columns'\] = "repeat(auto-fit, [three\] auto [four\])" should set the property value]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html.ini b/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html.ini
new file mode 100644
index 00000000000..04b96826651
--- /dev/null
+++ b/tests/wpt/meta/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html.ini
@@ -0,0 +1,48 @@
+[grid-template-columns-repeat-intrinsic-valid.tentative.html]
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, auto 100px auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, [three\] auto [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, min-content 100px min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, [three\] min-content [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, max-content 100px max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, [three\] max-content [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, fit-content(200px) 100px fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-columns'\] = "repeat(auto-fit, [three\] fit-content(200px) [four\])" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html.ini b/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html.ini
deleted file mode 100644
index ca642fe7e07..00000000000
--- a/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html.ini
+++ /dev/null
@@ -1,12 +0,0 @@
-[grid-template-rows-repeat-auto-valid.tentative.html]
-  [e.style['grid-template-rows'\] = "repeat(auto-fill, auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-rows'\] = "repeat(auto-fit, auto 100px auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-rows'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] auto)" should set the property value]
-    expected: FAIL
-
-  [e.style['grid-template-rows'\] = "repeat(auto-fit, [three\] auto [four\])" should set the property value]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html.ini b/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html.ini
new file mode 100644
index 00000000000..3a7f84697a0
--- /dev/null
+++ b/tests/wpt/meta/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html.ini
@@ -0,0 +1,48 @@
+[grid-template-rows-repeat-intrinsic-valid.tentative.html]
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, auto 100px auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] auto)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, [three\] auto [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, min-content 100px min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] min-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, [three\] min-content [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, max-content 100px max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] max-content)" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, [three\] max-content [four\])" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, fit-content(200px) 100px fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fill, minmax(30px, 5fr) [two\] fit-content(200px))" should set the property value]
+    expected: FAIL
+
+  [e.style['grid-template-rows'\] = "repeat(auto-fit, [three\] fit-content(200px) [four\])" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-mixins/contents-rule.html.ini b/tests/wpt/meta/css/css-mixins/contents-rule.html.ini
new file mode 100644
index 00000000000..fe585237013
--- /dev/null
+++ b/tests/wpt/meta/css/css-mixins/contents-rule.html.ini
@@ -0,0 +1,15 @@
+[contents-rule.html]
+  [Simple @contents with no fallback]
+    expected: FAIL
+
+  [Implicit semicolon after @contents, at end of block]
+    expected: FAIL
+
+  [Block in @apply overrides fallback]
+    expected: FAIL
+
+  [Fallback is used if @apply has no block]
+    expected: FAIL
+
+  [@contents is ignored if there is no @contents parameter]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-mixins/cross-stylesheet.html.ini b/tests/wpt/meta/css/css-mixins/cross-stylesheet.html.ini
new file mode 100644
index 00000000000..ffba89ef00c
--- /dev/null
+++ b/tests/wpt/meta/css/css-mixins/cross-stylesheet.html.ini
@@ -0,0 +1,3 @@
+[cross-stylesheet.html]
+  [CSS Mixins: Mixin from another stylesheet]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-mixins/shadow-dom.html.ini b/tests/wpt/meta/css/css-mixins/shadow-dom.html.ini
new file mode 100644
index 00000000000..7e24e842348
--- /dev/null
+++ b/tests/wpt/meta/css/css-mixins/shadow-dom.html.ini
@@ -0,0 +1,9 @@
+[shadow-dom.html]
+  [Style in shadow DOM should have access to outside non-adopted mixins]
+    expected: FAIL
+
+  [Style in shadow DOM should have access to inside mixins]
+    expected: FAIL
+
+  [Style in shadow DOM should have access to mixins from adopted stylesheets]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-position/replaced-object-backdrop.html.ini b/tests/wpt/meta/css/css-position/replaced-object-backdrop.html.ini
new file mode 100644
index 00000000000..eb00ffb66ee
--- /dev/null
+++ b/tests/wpt/meta/css/css-position/replaced-object-backdrop.html.ini
@@ -0,0 +1,2 @@
+[replaced-object-backdrop.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-text/parsing/text-autospace-computed.html.ini b/tests/wpt/meta/css/css-text/parsing/text-autospace-computed.html.ini
index b39c17ebe88..8473b4ee284 100644
--- a/tests/wpt/meta/css/css-text/parsing/text-autospace-computed.html.ini
+++ b/tests/wpt/meta/css/css-text/parsing/text-autospace-computed.html.ini
@@ -16,3 +16,81 @@
 
   [Property text-autospace value 'initial']
     expected: FAIL
+
+  [Property text-autospace value 'ideograph-alpha ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation ideograph-alpha']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation ideograph-alpha ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-alpha insert']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-numeric insert']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-alpha ideograph-numeric insert']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation insert']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation ideograph-alpha insert']
+    expected: FAIL
+
+  [Property text-autospace value 'insert ideograph-alpha']
+    expected: FAIL
+
+  [Property text-autospace value 'insert ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'insert ideograph-alpha ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'insert punctuation']
+    expected: FAIL
+
+  [Property text-autospace value 'insert punctuation ideograph-alpha']
+    expected: FAIL
+
+  [Property text-autospace value 'insert punctuation ideograph-alpha ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-alpha replace']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-numeric replace']
+    expected: FAIL
+
+  [Property text-autospace value 'ideograph-alpha ideograph-numeric replace']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation replace']
+    expected: FAIL
+
+  [Property text-autospace value 'punctuation ideograph-alpha replace']
+    expected: FAIL
+
+  [Property text-autospace value 'replace ideograph-alpha']
+    expected: FAIL
+
+  [Property text-autospace value 'replace ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'replace ideograph-alpha ideograph-numeric']
+    expected: FAIL
+
+  [Property text-autospace value 'replace punctuation']
+    expected: FAIL
+
+  [Property text-autospace value 'replace punctuation ideograph-alpha']
+    expected: FAIL
+
+  [Property text-autospace value 'replace punctuation ideograph-alpha ideograph-numeric']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/elementsFromPoint-iframes.html.ini b/tests/wpt/meta/css/cssom-view/elementsFromPoint-iframes.html.ini
deleted file mode 100644
index 93075e8be5e..00000000000
--- a/tests/wpt/meta/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[elementsFromPoint-iframes.html]
-  [elementsFromPoint on inner documents]
-    expected: FAIL
-
-  [elementsFromPoint on the root document for points in iframe elements]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/elementsFromPoint-invalid-cases.html.ini b/tests/wpt/meta/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
deleted file mode 100644
index 799c3b607af..00000000000
--- a/tests/wpt/meta/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[elementsFromPoint-invalid-cases.html]
-  [The root element is the last element returned for valid queries]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom/StyleSheetList-constructable-with-style-recalc.html.ini b/tests/wpt/meta/css/cssom/StyleSheetList-constructable-with-style-recalc.html.ini
new file mode 100644
index 00000000000..ac5b152c48a
--- /dev/null
+++ b/tests/wpt/meta/css/cssom/StyleSheetList-constructable-with-style-recalc.html.ini
@@ -0,0 +1,3 @@
+[StyleSheetList-constructable-with-style-recalc.html]
+  [document.styleSheets does not include adopted style sheets]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom/StyleSheetList-constructable.html.ini b/tests/wpt/meta/css/cssom/StyleSheetList-constructable.html.ini
new file mode 100644
index 00000000000..02586e8c9b3
--- /dev/null
+++ b/tests/wpt/meta/css/cssom/StyleSheetList-constructable.html.ini
@@ -0,0 +1,3 @@
+[StyleSheetList-constructable.html]
+  [document.styleSheets does not include adopted style sheets]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom/caretPositionFromPoint.html.ini b/tests/wpt/meta/css/cssom/caretPositionFromPoint.html.ini
index 91a9a87b74c..a3e9c7a1625 100644
--- a/tests/wpt/meta/css/cssom/caretPositionFromPoint.html.ini
+++ b/tests/wpt/meta/css/cssom/caretPositionFromPoint.html.ini
@@ -10,3 +10,15 @@
 
   [CaretRange.getClientRect() should return a DOMRect that matches one obtained from a manually constructed Range]
     expected: FAIL
+
+  [document.caretPositionFromPoint() should return a CaretPosition over elements with `user-select: none`]
+    expected: FAIL
+
+  [document.caretPositionFromPoint() should return a CaretPosition over video elements]
+    expected: FAIL
+
+  [document.caretPositionFromPoint() should return a CaretPosition over audio elements]
+    expected: FAIL
+
+  [document.caretPositionFromPoint() should return a CaretPosition over SVG elements]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini
new file mode 100644
index 00000000000..c253f779d78
--- /dev/null
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/008.html.ini
@@ -0,0 +1,3 @@
+[008.html]
+  [Link with onclick form submit to javascript url and href navigation ]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
index dc1144214ef..7bea0242ebf 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html.ini
@@ -7,3 +7,9 @@
 
   [Navigating to a different document with link click]
     expected: FAIL
+
+  [Navigating to a different document with location.href]
+    expected: FAIL
+
+  [Navigating to a different document with location.assign]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
index 324db3d9b35..5aef7ce66ce 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
@@ -10,3 +10,6 @@
 
   [load event does not fire on window.open('about:blank?foo')]
     expected: FAIL
+
+  [load event does not fire on window.open('about:blank')]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/dom/partial-updates/tentative/template-patch-range.html.ini b/tests/wpt/meta/html/dom/partial-updates/tentative/template-patch-range.html.ini
new file mode 100644
index 00000000000..8d0d1d67f13
--- /dev/null
+++ b/tests/wpt/meta/html/dom/partial-updates/tentative/template-patch-range.html.ini
@@ -0,0 +1,9 @@
+[template-patch-range.html]
+  [<template patchstartafter=first patchendbefore=last> should insert the patch between two existing nodes]
+    expected: FAIL
+
+  [<template patchendbefore=last> should insert the patch before an existing node]
+    expected: FAIL
+
+  [<template patchstartafter=first> should insert the patch after an existing node]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index ddd65fdcec8..b3b91068b8d 100644
--- a/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/meta/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,4 +1,5 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
@@ -9,7 +10,7 @@
     expected: FAIL
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: NOTRUN
 
   [Host element with delegatesFocus should support autofocus]
     expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html.ini
new file mode 100644
index 00000000000..247b8ee99a6
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html.ini
@@ -0,0 +1,3 @@
+[iframe-loading-lazy-reload-location-reload.html]
+  [Reloading iframe loading='lazy' before it is loaded: location.reload]
+    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 56f11f614da..d7e7d1b9815 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
@@ -1,3 +1,4 @@
 [iframe_sandbox_popups_escaping-1.html]
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     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 ab6280dc836..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
@@ -1,3 +1,3 @@
 [iframe_sandbox_popups_nonescaping-2.html]
   [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-img-element/animated-webp-update.tentative.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html.ini
new file mode 100644
index 00000000000..f8ddcc4e566
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html.ini
@@ -0,0 +1,2 @@
+[animated-webp-update.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm.ini b/tests/wpt/meta/html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm.ini
deleted file mode 100644
index 4cb15eeee5e..00000000000
--- a/tests/wpt/meta/html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[intrinsic_sizes.htm]
-  [default object size after src is removed]
-    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/forms/historical.html.ini b/tests/wpt/meta/html/semantics/forms/historical.html.ini
deleted file mode 100644
index 5d8289307cc..00000000000
--- a/tests/wpt/meta/html/semantics/forms/historical.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[historical.html]
-  [<input name=isindex> should not be supported]
-    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/popovers/popover-nested-in-button.html.ini b/tests/wpt/meta/html/semantics/popovers/popover-nested-in-button.html.ini
index 98dcb783d22..f89a2219075 100644
--- a/tests/wpt/meta/html/semantics/popovers/popover-nested-in-button.html.ini
+++ b/tests/wpt/meta/html/semantics/popovers/popover-nested-in-button.html.ini
@@ -7,3 +7,6 @@
 
   [invoker inside popover still works, even with weird nesting]
     expected: FAIL
+
+  [invoker inside popover still works, even inside of a shadowroot]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html.ini b/tests/wpt/meta/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html.ini
new file mode 100644
index 00000000000..5448b8210f4
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html.ini
@@ -0,0 +1,2 @@
+[interestfor-pseudo-element-appearance.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/preload/prefetch-document.html.ini b/tests/wpt/meta/preload/prefetch-document.html.ini
index 31caafdf607..e79d094c754 100644
--- a/tests/wpt/meta/preload/prefetch-document.html.ini
+++ b/tests/wpt/meta/preload/prefetch-document.html.ini
@@ -4,6 +4,3 @@
 
   [different-site document prefetch without 'as' should not be consumed]
     expected: FAIL
-
-  [different-site document prefetch with 'as=document' should not be consumed]
-    expected: FAIL
diff --git a/tests/wpt/meta/preload/preload-error.sub.html.ini b/tests/wpt/meta/preload/preload-error.sub.html.ini
index dd7ce352be1..2bf022bfe49 100644
--- a/tests/wpt/meta/preload/preload-error.sub.html.ini
+++ b/tests/wpt/meta/preload/preload-error.sub.html.ini
@@ -68,11 +68,17 @@
   [Decode-error (style): main]
     expected: FAIL
 
-  [MIME-error (script): main]
-    expected: FAIL
-
   [404 (style): main]
     expected: FAIL
 
   [CORS (style): main]
     expected: FAIL
+
+  [success (style): main]
+    expected: FAIL
+
+  [404 (xhr): main]
+    expected: FAIL
+
+  [Decode-error (script): main]
+    expected: FAIL
diff --git a/tests/wpt/meta/reporting/crashReport-test.html.ini b/tests/wpt/meta/reporting/crashReport-test.html.ini
new file mode 100644
index 00000000000..6f1e4a562c7
--- /dev/null
+++ b/tests/wpt/meta/reporting/crashReport-test.html.ini
@@ -0,0 +1,24 @@
+[crashReport-test.html]
+  [crashReport getter returns null in detached Documents]
+    expected: FAIL
+
+  [crashReport initialize() throws InvalidStateError in detached Documents]
+    expected: FAIL
+
+  [crashReport.set() throws InvalidStateError in detached Documents]
+    expected: FAIL
+
+  [crashReport.remove() throws InvalidStateError in detached Documents]
+    expected: FAIL
+
+  [crashReport.initialize() with size > 5MB rejects with NotAllowedError]
+    expected: FAIL
+
+  [Calling crashReport.initialize() a second time throws InvalidStateError]
+    expected: FAIL
+
+  [crashReport.set() throws before initialize() resolves]
+    expected: FAIL
+
+  [crashReport.set() and .remove() succeed after initialize() resolves]
+    expected: FAIL
diff --git a/tests/wpt/meta/resize-observer/change-layout-in-error.html.ini b/tests/wpt/meta/resize-observer/change-layout-in-error.html.ini
deleted file mode 100644
index 5d07f60e0b6..00000000000
--- a/tests/wpt/meta/resize-observer/change-layout-in-error.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[change-layout-in-error.html]
-  [Changing layout in window error handler should not result in lifecyle loop when resize observer loop limit is reached.]
-    expected: FAIL
diff --git a/tests/wpt/meta/resize-observer/eventloop.html.ini b/tests/wpt/meta/resize-observer/eventloop.html.ini
index 6ed748ec951..620f249ce85 100644
--- a/tests/wpt/meta/resize-observer/eventloop.html.ini
+++ b/tests/wpt/meta/resize-observer/eventloop.html.ini
@@ -1,3 +1,3 @@
 [eventloop.html]
-  [test0: multiple notifications inside same event loop]
+  [test1: depths of shadow roots]
     expected: FAIL
diff --git a/tests/wpt/meta/selection/shadow-dom/tentative/Selection-getComposedRanges.html.ini b/tests/wpt/meta/selection/shadow-dom/tentative/Selection-getComposedRanges.html.ini
index 0de7b5fd0bc..59acced5cce 100644
--- a/tests/wpt/meta/selection/shadow-dom/tentative/Selection-getComposedRanges.html.ini
+++ b/tests/wpt/meta/selection/shadow-dom/tentative/Selection-getComposedRanges.html.ini
@@ -31,3 +31,6 @@
 
   [getComposedRanges returns a sequence with a static range without rescoping when there is a selection in an outer shadow tree and the inner shadow tree is specified as an argument]
     expected: FAIL
+
+  [getComposedRanges returns a sequence with a static range pointing to a shadow tree when there is a selection in the shadow tree and the shadow tree is specified as an argument]
+    expected: FAIL
diff --git a/tests/wpt/meta/service-workers/idlharness.https.any.js.ini b/tests/wpt/meta/service-workers/idlharness.https.any.js.ini
index aba70ff3a35..f85e3c42ea4 100644
--- a/tests/wpt/meta/service-workers/idlharness.https.any.js.ini
+++ b/tests/wpt/meta/service-workers/idlharness.https.any.js.ini
@@ -108,21 +108,6 @@
   [Window interface: attribute caches]
     expected: FAIL
 
-  [ServiceWorkerContainer interface: operation register((TrustedScriptURL or USVString), optional RegistrationOptions)]
-    expected: TIMEOUT
-
-  [NavigationPreloadManager interface: operation enable()]
-    expected: TIMEOUT
-
-  [NavigationPreloadManager interface: operation disable()]
-    expected: TIMEOUT
-
-  [NavigationPreloadManager interface: operation setHeaderValue(ByteString)]
-    expected: TIMEOUT
-
-  [NavigationPreloadManager interface: operation getState()]
-    expected: TIMEOUT
-
 
 [idlharness.https.any.serviceworker.html]
   expected: ERROR
diff --git a/tests/wpt/meta/shadow-dom/Document-caretPositionFromPoint.tentative.html.ini b/tests/wpt/meta/shadow-dom/Document-caretPositionFromPoint.tentative.html.ini
index 1cf076481a9..50f41b670a7 100644
--- a/tests/wpt/meta/shadow-dom/Document-caretPositionFromPoint.tentative.html.ini
+++ b/tests/wpt/meta/shadow-dom/Document-caretPositionFromPoint.tentative.html.ini
@@ -34,3 +34,6 @@
 
   [document.caretPositionFromPoint() should return a CaretPosition at the specified location pointing to the inner shadow tree when the point is in an inner shadow tree and the inner shadow tree and the outer shadow tree are specified as an argument]
     expected: FAIL
+
+  [document.caretPositionFromPoint() should return a CaretPosition at the specified location pointing to a closed shadow tree when the shadow tree is specified as an argument]
+    expected: FAIL
diff --git a/tests/wpt/meta/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/meta/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 2f49805066a..32e9d53a13c 100644
--- a/tests/wpt/meta/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/meta/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -886,3 +886,15 @@
 
   [X SNR (-301.3207293613 dB) is not greater than or equal to 85.58. Got -301.3207293613.]
     expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[14970\]\t-7.6012745677376742e+26\t7.6832914352416992e-1\t7.6012745677376742e+26\t9.8932529525981143e+26\t9.0957000000000003e-5\n\t[14971\]\t4.5687935130846336e-41\t7.2672140598297119e-1\t7.2672140598297119e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 7.6012745677376742e+26 at index of 14970.\n\tMax RelError of 9.8932529525981143e+26 at index of 14970.\n]
+    expected: FAIL
+
+  [X SNR (-494.1836424576893 dB) is not greater than or equal to 85.58. Got -494.1836424576893.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[14970\]\t-5.7105342676777582e-10\t7.6832914352416992e-1\t7.6832914409522335e-1\t1.0000000007432406e+0\t9.0957000000000003e-5\n\t[14971\]\t4.5567423462914402e-41\t7.2672140598297119e-1\t7.2672140598297119e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 7.6832914409522335e-1 at index of 14970.\n\tMax RelError of 1.0000000007432406e+0 at index of 14970.\n]
+    expected: FAIL
+
+  [X SNR (42.94790593253836 dB) is not greater than or equal to 85.58. Got 42.94790593253836.]
+    expected: FAIL
diff --git a/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html.ini b/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html.ini
index 9b7c82dd6be..7b3d48eeaf3 100644
--- a/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html.ini
+++ b/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html.ini
@@ -16,3 +16,9 @@
 
   [# AUDIT TASK RUNNER FINISHED: 2 out of 2 tasks were failed.]
     expected: FAIL
+
+  [NaN should not occur during extreme linearRampToValueAtTime events]
+    expected: FAIL
+
+  [Interpolation of linear ramp between very close time values]
+    expected: FAIL
diff --git a/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html.ini b/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html.ini
index 3593cf10e3c..19e7ab4dc4d 100644
--- a/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html.ini
+++ b/tests/wpt/meta/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html.ini
@@ -7,3 +7,6 @@
 
   [# AUDIT TASK RUNNER FINISHED: 1 out of 1 tasks were failed.]
     expected: FAIL
+
+  [Test summing junction behavior of AudioParam with multiple audio-rate sources and intrinsic gain]
+    expected: FAIL
diff --git a/tests/wpt/meta/workers/constructors/Worker/Worker-constructor.html.ini b/tests/wpt/meta/workers/constructors/Worker/Worker-constructor.html.ini
new file mode 100644
index 00000000000..80f9a4f15b8
--- /dev/null
+++ b/tests/wpt/meta/workers/constructors/Worker/Worker-constructor.html.ini
@@ -0,0 +1,2 @@
+[Worker-constructor.html]
+  expected: ERROR
diff --git a/tests/wpt/tests/IndexedDB/resources/support-get-all.js b/tests/wpt/tests/IndexedDB/resources/support-get-all.js
index 3bff0528b18..ff0187d90c5 100644
--- a/tests/wpt/tests/IndexedDB/resources/support-get-all.js
+++ b/tests/wpt/tests/IndexedDB/resources/support-get-all.js
@@ -414,30 +414,6 @@ function assert_large_array_equals(actual, expected, description) {
   assert_equals(array_string, expected_string, description);
 }
 
-// Verifies a record from the results of `getAllRecords()`.
-function assert_record_equals(actual_record, expected_record) {
-  assert_class_string(
-      actual_record, 'IDBRecord', 'The record must be an IDBRecord');
-  assert_idl_attribute(
-      actual_record, 'key', 'The record must have a key attribute');
-  assert_idl_attribute(
-      actual_record, 'primaryKey',
-      'The record must have a primaryKey attribute');
-  assert_idl_attribute(
-      actual_record, 'value', 'The record must have a value attribute');
-
-  // Verify the key properties.
-  assert_equals(
-      actual_record.primaryKey, expected_record.primaryKey,
-      'The record must have the expected primaryKey');
-  assert_equals(
-      actual_record.key, expected_record.key,
-      'The record must have the expected key');
-
-  // Verify the value.
-  assert_idb_value_equals(actual_record.value, expected_record.value);
-}
-
 // Verifies two IDB values are equal.  The expected value may be a primitive, an
 // object, or an array.
 function assert_idb_value_equals(actual_value, expected_value) {
diff --git a/tests/wpt/tests/ai/rewriter/rewriter-availability-available.tentative.https.window.js b/tests/wpt/tests/ai/rewriter/rewriter-availability-available.tentative.https.window.js
index a2117486e23..cae56a7750b 100644
--- a/tests/wpt/tests/ai/rewriter/rewriter-availability-available.tentative.https.window.js
+++ b/tests/wpt/tests/ai/rewriter/rewriter-availability-available.tentative.https.window.js
@@ -26,9 +26,9 @@ promise_test(async () => {
     tone: 'as-is',
     format: 'as-is',
     length: 'as-is',
-    expectedInputLanguages: ['es'], // not supported
+    expectedInputLanguages: ['zu'], // not supported
     expectedContextLanguages: ['en'],
-    outputLanguage: 'es', // not supported
+    outputLanguage: 'zu', // not supported
   });
   assert_equals(availability, 'unavailable');
 }, 'Rewriter.availability() returns unavailable for unsupported languages');
diff --git a/tests/wpt/tests/ai/summarizer/summarizer-availability-available.tentative.https.window.js b/tests/wpt/tests/ai/summarizer/summarizer-availability-available.tentative.https.window.js
index df4e161d637..ccecd739a72 100644
--- a/tests/wpt/tests/ai/summarizer/summarizer-availability-available.tentative.https.window.js
+++ b/tests/wpt/tests/ai/summarizer/summarizer-availability-available.tentative.https.window.js
@@ -27,9 +27,9 @@ promise_test(async () => {
     type: 'tldr',
     format: 'plain-text',
     length: 'medium',
-    expectedInputLanguages: ['es'], // not supported
+    expectedInputLanguages: ['zu'], // not supported
     expectedContextLanguages: ['en'],
-    outputLanguage: 'es', // not supported
+    outputLanguage: 'zu', // not supported
   });
   assert_equals(availability, 'unavailable');
 }, 'Summarizer.availability() returns unavailable for unsupported languages');
diff --git a/tests/wpt/tests/ai/writer/writer-availability-available.tentative.https.window.js b/tests/wpt/tests/ai/writer/writer-availability-available.tentative.https.window.js
index 0e3106a14c2..7f652a85a52 100644
--- a/tests/wpt/tests/ai/writer/writer-availability-available.tentative.https.window.js
+++ b/tests/wpt/tests/ai/writer/writer-availability-available.tentative.https.window.js
@@ -26,9 +26,9 @@ promise_test(async () => {
     tone: 'neutral',
     format: 'plain-text',
     length: 'medium',
-    expectedInputLanguages: ['es'], // not supported
+    expectedInputLanguages: ['zu'], // not supported
     expectedContextLanguages: ['en'],
-    outputLanguage: 'es', // not supported
+    outputLanguage: 'zu', // not supported
   });
   assert_equals(availability, 'unavailable');
 }, 'Writer.availability() returns unavailable for unsupported languages');
diff --git a/tests/wpt/tests/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html b/tests/wpt/tests/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html
new file mode 100644
index 00000000000..4ee339e8b59
--- /dev/null
+++ b/tests/wpt/tests/content-security-policy/unsafe-eval/tentative/eval-allowed-by-hash-long-script.sub.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline' 'eval-sha256-VQy4ev8+SNjwocE4f/UdEfFZK/kEkq7mIM/M/mZrVpE='; connect-src 'self';">
+    <title>eval-allowed</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="../../support/logTest.sub.js?logs=[]"></script>
+    <script src='../../support/alertAssert.sub.js?alerts=["PASS, long text that exceeds the 40 character limit used for report snippets"]'></script>
+</head>
+
+<body>
+    <script>
+        window.addEventListener('securitypolicyviolation', function(e) {
+            log("Fail");
+        });
+
+        eval("alert_assert('PASS, long text that exceeds the 40 character limit used for report snippets')");
+    </script>
+    <div id="log"></div>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/cookies/partitioned-cookies/partitioned-cookies.tentative.https.html b/tests/wpt/tests/cookies/partitioned-cookies/partitioned-cookies.tentative.https.html
index deab6691019..96d88f9f107 100644
--- a/tests/wpt/tests/cookies/partitioned-cookies/partitioned-cookies.tentative.https.html
+++ b/tests/wpt/tests/cookies/partitioned-cookies/partitioned-cookies.tentative.https.html
@@ -8,6 +8,8 @@
 <script src="/common/get-host-info.sub.js"></script>
 <script src="/cookies/resources/cookie-helper.sub.js"></script>
 <script src="/cookies/partitioned-cookies/resources/test-helpers.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
 
 <body>
 <script>
@@ -65,7 +67,9 @@ document.body.onload = async () => {
           encodeURIComponent(self.origin)}`,
       get_host_info().HTTPS_NOTSAMESITE_ORIGIN + self.location.pathname);
   const popup = window.open(crossSiteUrl);
-  fetch_tests_from_window(popup);
+  await fetch_tests_from_window(popup);
+
+  await test_driver.delete_all_cookies();
 };
 
 </script>
diff --git a/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.any.js b/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.any.js
index b42a745d3e4..9dd832624bb 100644
--- a/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.any.js
+++ b/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.any.js
@@ -1,18 +1,25 @@
 // META: title=Cookie Store API: cookieListItem attributes
-// META: global=window,serviceworker
+// META: global=serviceworker
+
+// This is a copy of cookieListItem_attributes.https.window.js, minus all the bits that only work
+// in a window context, which unfortunately includes the testdriver asserts.
+//
+// Please keep them synchronized.
 
 'use strict';
 
-const kCurrentHostname = (new URL(self.location.href)).hostname;
+const currentHostname = (new URL(self.location.href)).hostname;
 
-const kOneDay = 24 * 60 * 60 * 1000;
-const kFourHundredDays = 400 * kOneDay;
-const kTenYears = 10 * 365 * kOneDay;
-const kFourHundredDaysFromNow = Date.now() + kFourHundredDays;
-const kTenYearsFromNow = Date.now() + kTenYears;
+const oneDayInSeconds = 24 * 60 * 60;
+const fourHundredDaysInSeconds = 400 * oneDayInSeconds;
+const tenYearsInSeconds = 10 * 365 * oneDayInSeconds;
+const fourHundredDaysFromNowInSeconds = Date.now() / 1000 + fourHundredDaysInSeconds;
+const tenYearsFromNowInSeconds = Date.now() / 1000 + tenYearsInSeconds;
 
-const kCookieListItemKeys =
-    ['domain', 'expires', 'name', 'path', 'sameSite', 'secure', 'value'].sort();
+function assert_cookie_keys(cookie) {
+  const cookieKeys = Object.keys(cookie);
+  assert_array_equals(cookieKeys, ['name', 'value']);
+}
 
 promise_test(async testCase => {
   await cookieStore.delete('cookie-name');
@@ -25,15 +32,7 @@ promise_test(async testCase => {
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, '/');
-  assert_equals(cookie.expires, null);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set defaults with positional name and value');
 
 promise_test(async testCase => {
@@ -46,37 +45,21 @@ promise_test(async testCase => {
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, '/');
-  assert_equals(cookie.expires, null);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set defaults with name and value in options');
 
 promise_test(async testCase => {
   await cookieStore.delete('cookie-name');
 
   await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
-                          expires: kTenYearsFromNow });
+                          expires: tenYearsFromNowInSeconds * 1000 });
   testCase.add_cleanup(async () => {
     await cookieStore.delete('cookie-name');
   });
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, '/');
-  assert_approx_equals(cookie.expires, kFourHundredDaysFromNow, kOneDay);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set with expires set to a timestamp 10 ' +
    'years in the future');
 
@@ -84,40 +67,29 @@ promise_test(async testCase => {
   await cookieStore.delete('cookie-name');
 
   await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
-                          expires: new Date(kTenYearsFromNow) });
+                          expires: new Date(tenYearsFromNowInSeconds) * 1000 });
   testCase.add_cleanup(async () => {
     await cookieStore.delete('cookie-name');
   });
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, '/');
-  assert_approx_equals(cookie.expires, kFourHundredDaysFromNow, kOneDay);
-  assert_equals(cookie.secure, true);
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set with expires set to a Date 10 ' +
    'years in the future');
 
 promise_test(async testCase => {
-  await cookieStore.delete({ name: 'cookie-name', domain: kCurrentHostname });
+  await cookieStore.delete({ name: 'cookie-name', domain: currentHostname });
 
   await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
-                          domain: kCurrentHostname });
+                          domain: currentHostname });
   testCase.add_cleanup(async () => {
-    await cookieStore.delete({ name: 'cookie-name', domain: kCurrentHostname });
+    await cookieStore.delete({ name: 'cookie-name', domain: currentHostname });
   });
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, kCurrentHostname);
-  assert_equals(cookie.path, '/');
-  assert_equals(cookie.expires, null);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set with domain set to the current hostname');
 
 promise_test(async testCase => {
@@ -135,15 +107,7 @@ promise_test(async testCase => {
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, currentDirectory);
-  assert_equals(cookie.expires, null);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set with path set to the current directory');
 
 promise_test(async testCase => {
@@ -160,15 +124,7 @@ promise_test(async testCase => {
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie.name, 'cookie-name');
   assert_equals(cookie.value, 'cookie-value');
-  assert_equals(cookie.domain, null);
-  assert_equals(cookie.path, currentDirectory);
-  assert_equals(cookie.expires, null);
-  assert_equals(cookie.secure, true);
-  assert_equals(cookie.sameSite, 'strict');
-  const itemKeys = Object.keys(cookie);
-  for (const key of kCookieListItemKeys) {
-    assert_in_array(key, itemKeys);
-  }
+  assert_cookie_keys(cookie);
 }, 'CookieListItem - cookieStore.set does not add / to path if it does not end with /');
 
 ['strict', 'lax', 'none'].forEach(sameSiteValue => {
@@ -183,47 +139,7 @@ promise_test(async testCase => {
     const cookie = await cookieStore.get('cookie-name');
     assert_equals(cookie.name, 'cookie-name');
     assert_equals(cookie.value, 'cookie-value');
-    assert_equals(cookie.domain, null);
-    assert_equals(cookie.path, '/');
-    assert_equals(cookie.expires, null);
-    assert_equals(cookie.secure, true);
-    assert_equals(cookie.sameSite, sameSiteValue);
-    const itemKeys = Object.keys(cookie);
-    for (const key of kCookieListItemKeys) {
-      assert_in_array(key, itemKeys);
-    }
+    assert_cookie_keys(cookie);
   }, `CookieListItem - cookieStore.set with sameSite set to ${sameSiteValue}`);
 
 });
-
-promise_test(async testCase => {
-  await cookieStore.delete('cookie-name');
-
-  await cookieStore.set('cookie-name', 'cookie-value');
-  testCase.add_cleanup(async () => {
-    await cookieStore.delete('cookie-name');
-  });
-
-  const cookie = await cookieStore.get('cookie-name');
-  assert_equals(cookie.secure, true);
-}, 'CookieListItem - secure defaults to true');
-
-
-if (self.GLOBAL.isWindow()) {
-  promise_test(async testCase => {
-    await cookieStore.delete('cookie-name');
-    testCase.add_cleanup(async () => {
-      await cookieStore.delete('cookie-name');
-    });
-
-    let encodedCookie = encodeURIComponent(JSON.stringify("cookie-name=1; max-age=99999999999999999999999999999; path=/"));
-    await fetch(`/cookies/resources/cookie.py?set=${encodedCookie}`);
-
-    assert_equals(document.cookie, "cookie-name=1", 'The cookie was set as expected.');
-
-    const cookie = await cookieStore.get('cookie-name');
-    assert_equals(cookie.name, 'cookie-name');
-    assert_equals(cookie.value, '1');
-    assert_approx_equals(cookie.expires, kFourHundredDaysFromNow, kOneDay);
-  }, "Test max-age attribute over the 400 days");
-}
diff --git a/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.window.js b/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.window.js
new file mode 100644
index 00000000000..9f4aa5e3c00
--- /dev/null
+++ b/tests/wpt/tests/cookiestore/cookieListItem_attributes.https.window.js
@@ -0,0 +1,201 @@
+// META: title=Cookie Store API: cookieListItem attributes
+// META: script=/resources/testdriver.js
+// META: script=/resources/testdriver-vendor.js
+
+// Please keep this synchronized with cookieListItem_attributes.https.any.js.
+
+'use strict';
+
+const currentHostname = location.hostname;
+
+const oneDayInSeconds = 24 * 60 * 60;
+const fourHundredDaysInSeconds = 400 * oneDayInSeconds;
+const tenYearsInSeconds = 10 * 365 * oneDayInSeconds;
+const fourHundredDaysFromNowInSeconds = Date.now() / 1000 + fourHundredDaysInSeconds;
+const tenYearsFromNowInSeconds = Date.now() / 1000 + tenYearsInSeconds;
+
+function assert_cookie_keys(cookie) {
+  const cookieKeys = Object.keys(cookie);
+  assert_array_equals(cookieKeys, ['name', 'value']);
+}
+
+promise_test(async testCase => {
+  await cookieStore.delete('cookie-name');
+
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_equals(internalCookie.name, 'cookie-name');
+  assert_equals(internalCookie.value, 'cookie-value');
+  assert_equals(internalCookie.path, '/');
+  assert_equals(internalCookie.domain, currentHostname);
+  assert_true(internalCookie.secure);
+  assert_false(internalCookie.httpOnly);
+  assert_equals(internalCookie.expiry, undefined);
+  assert_equals(internalCookie.sameSite, 'Strict');
+}, 'CookieListItem - cookieStore.set defaults with positional name and value');
+
+promise_test(async testCase => {
+  await cookieStore.delete('cookie-name');
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value' });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_equals(internalCookie.name, 'cookie-name');
+  assert_equals(internalCookie.value, 'cookie-value');
+  assert_equals(internalCookie.path, '/');
+  assert_equals(internalCookie.domain, currentHostname);
+  assert_true(internalCookie.secure);
+  assert_false(internalCookie.httpOnly);
+  assert_equals(internalCookie.expiry, undefined);
+  assert_equals(internalCookie.sameSite, 'Strict');
+}, 'CookieListItem - cookieStore.set defaults with name and value in options');
+
+promise_test(async testCase => {
+  await cookieStore.delete('cookie-name');
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
+                          expires: tenYearsFromNowInSeconds * 1000 });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_approx_equals(internalCookie.expiry, fourHundredDaysFromNowInSeconds, oneDayInSeconds);
+}, 'CookieListItem - cookieStore.set with expires set to a timestamp 10 ' +
+   'years in the future');
+
+promise_test(async testCase => {
+  await cookieStore.delete('cookie-name');
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
+                          expires: new Date(tenYearsFromNowInSeconds) * 1000 });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_approx_equals(internalCookie.expiry, fourHundredDaysFromNowInSeconds, oneDayInSeconds);
+}, 'CookieListItem - cookieStore.set with expires set to a Date 10 ' +
+   'years in the future');
+
+promise_test(async testCase => {
+  await cookieStore.delete({ name: 'cookie-name', domain: currentHostname });
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
+                          domain: currentHostname });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete({ name: 'cookie-name', domain: currentHostname });
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_equals(internalCookie.domain, currentHostname);
+}, 'CookieListItem - cookieStore.set with domain set to the current hostname');
+
+promise_test(async testCase => {
+  const currentUrl = new URL(self.location.href);
+  const currentPath = currentUrl.pathname;
+  const currentDirectory =
+      currentPath.substr(0, currentPath.lastIndexOf('/') + 1);
+  await cookieStore.delete({ name: 'cookie-name', path: currentDirectory });
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
+                          path: currentDirectory });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete({ name: 'cookie-name', path: currentDirectory });
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_equals(internalCookie.path, currentDirectory);
+}, 'CookieListItem - cookieStore.set with path set to the current directory');
+
+promise_test(async testCase => {
+  const currentUrl = new URL(self.location.href);
+  const currentPath = currentUrl.pathname;
+  const currentDirectory = currentPath.substr(0, currentPath.lastIndexOf('/'));
+  await cookieStore.delete({ name: 'cookie-name', path: currentDirectory });
+
+  await cookieStore.set({ name: 'cookie-name', value: 'cookie-value',
+                          path: currentDirectory });
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete({ name: 'cookie-name', path: currentDirectory });
+  });
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_equals(internalCookie.path, currentDirectory);
+}, 'CookieListItem - cookieStore.set does not add / to path if it does not end with /');
+
+['strict', 'lax', 'none'].forEach(sameSiteValue => {
+  promise_test(async testCase => {
+    await cookieStore.delete('cookie-name');
+
+    await cookieStore.set({
+        name: 'cookie-name', value: 'cookie-value', sameSite: sameSiteValue });
+    testCase.add_cleanup(async () => {
+      await cookieStore.delete('cookie-name');
+    });
+    const cookie = await cookieStore.get('cookie-name');
+    assert_equals(cookie.name, 'cookie-name');
+    assert_equals(cookie.value, 'cookie-value');
+    assert_cookie_keys(cookie);
+
+    const internalCookie = await test_driver.get_named_cookie('cookie-name');
+    assert_equals(internalCookie.sameSite, sameSiteValue.charAt(0).toUpperCase() + sameSiteValue.slice(1));
+  }, `CookieListItem - cookieStore.set with sameSite set to ${sameSiteValue}`);
+
+});
+
+promise_test(async testCase => {
+  await cookieStore.delete('cookie-name');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+
+  let encodedCookie = encodeURIComponent(JSON.stringify("cookie-name=1; max-age=99999999999999999999999999999; path=/"));
+  await fetch(`/cookies/resources/cookie.py?set=${encodedCookie}`);
+
+  assert_equals(document.cookie, "cookie-name=1", 'The cookie was set as expected.');
+
+  const cookie = await cookieStore.get('cookie-name');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, '1');
+  assert_cookie_keys(cookie);
+
+  const internalCookie = await test_driver.get_named_cookie('cookie-name');
+  assert_approx_equals(internalCookie.expiry, fourHundredDaysFromNowInSeconds, oneDayInSeconds);
+}, "Test max-age attribute over the 400 days");
diff --git a/tests/wpt/tests/cookiestore/cookieStore_delete_arguments.https.any.js b/tests/wpt/tests/cookiestore/cookieStore_delete_arguments.https.any.js
index 27b54f5a8dc..757eef7ade4 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_delete_arguments.https.any.js
+++ b/tests/wpt/tests/cookiestore/cookieStore_delete_arguments.https.any.js
@@ -220,3 +220,12 @@ promise_test(async testCase => {
   const cookie = await cookieStore.get('cookie-name');
   assert_equals(cookie, null);
 }, 'cookieStore.delete with a __Host- prefix should not have a domain');
+
+promise_test(async testCase => {
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookie = await cookieStore.delete(' cookie-name \t');
+  assert_equals(cookie, undefined);
+}, 'cookieStore.delete with whitespace');
diff --git a/tests/wpt/tests/cookiestore/cookieStore_getAll_arguments.https.any.js b/tests/wpt/tests/cookiestore/cookieStore_getAll_arguments.https.any.js
index 868246f606f..fecd2945a87 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_getAll_arguments.https.any.js
+++ b/tests/wpt/tests/cookiestore/cookieStore_getAll_arguments.https.any.js
@@ -194,3 +194,14 @@ promise_test(async testCase => {
     assert_equals(cookies[0].value, 'cookie-value');
   }
 }, 'cookieStore.getAll with absolute different url in options');
+
+promise_test(async testCase => {
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookies = await cookieStore.getAll(' cookie-name \t');
+  assert_equals(cookies.length, 1);
+  assert_equals(cookies[0].name, 'cookie-name');
+  assert_equals(cookies[0].value, 'cookie-value');
+}, 'cookieStore.getAll with whitespace');
diff --git a/tests/wpt/tests/cookiestore/cookieStore_get_arguments.https.any.js b/tests/wpt/tests/cookiestore/cookieStore_get_arguments.https.any.js
index d6ea0edef6a..a6bbc1a2f15 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_get_arguments.https.any.js
+++ b/tests/wpt/tests/cookiestore/cookieStore_get_arguments.https.any.js
@@ -142,3 +142,13 @@ promise_test(async testCase => {
     assert_equals(cookie.value, 'cookie-value');
   }
 }, 'cookieStore.get with absolute different url in options');
+
+promise_test(async testCase => {
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+  const cookie = await cookieStore.get(' cookie-name \t');
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+}, 'cookieStore.get with whitespace');
diff --git a/tests/wpt/tests/cookiestore/cookieStore_set_arguments.https.any.js b/tests/wpt/tests/cookiestore/cookieStore_set_arguments.https.any.js
index ce715b7f6c0..fe1d1451b13 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_set_arguments.https.any.js
+++ b/tests/wpt/tests/cookiestore/cookieStore_set_arguments.https.any.js
@@ -390,26 +390,29 @@ promise_test(async testCase => {
 }, 'cookieStore.set with whitespace only name and value');
 
 promise_test(async testCase => {
-  testCase.add_cleanup(async () => {
-    await cookieStore.delete('a b');
-  });
-  await cookieStore.set('a b', 'x y');
-  const cookie = await cookieStore.get('a b');
-  assert_equals(cookie.value, "x y");
+  const tests = [
+    { set: ['a b', 'x y'], get: ['a b', 'x y'] },
+    { set: ['a ', 'x'], get: ['a', 'x'] },
+    { set: ['a\t', 'x'], get: ['a', 'x'] },
+    { set: ['  a', 'x'], get: ['a', 'x'] },
+    { set: [' \t a', 'x'], get: ['a', 'x'] },
+    { set: [' \t a  \t\t', 'x'], get: ['a', 'x'] },
+    { set: ['a', 'x '], get: ['a', 'x'] },
+    { set: ['a', 'x\t'], get: ['a', 'x'] },
+    { set: ['a', ' x'], get: ['a', 'x'] },
+    { set: ['a', ' \t x'], get: ['a', 'x'] },
+    { set: ['a', ' \t x  \t\t'], get: ['a', 'x'] },
+  ];
 
-  await promise_rejects_js(testCase, TypeError, cookieStore.set(
-      { name: 'a  ',
-        value: 'x' }));
+  for (const t of tests) {
+    await cookieStore.set(t.set[0], t.set[1]);
+    let cookie = await cookieStore.get(t.get[0]);
+    assert_equals(cookie.value, t.get[1]);
 
-  await promise_rejects_js(testCase, TypeError, cookieStore.set(
-      { name: '  a',
-        value: 'x' }));
+    await cookieStore.delete(t.get[0]);
 
-  await promise_rejects_js(testCase, TypeError, cookieStore.set(
-      { name: 'a',
-        value: 'x ' }));
+    cookie = await cookieStore.get(t.get[0]);
+    assert_equals(cookie, null);
+  }
 
-  await promise_rejects_js(testCase, TypeError, cookieStore.set(
-      { name: 'a',
-        value: 'x ' }));
 }, 'cookieStore.set with whitespace at begining or end');
diff --git a/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.sub.https.html b/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.sub.https.html
index 4326e2a2d02..9705e06a0ee 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.sub.https.html
+++ b/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.sub.https.html
@@ -3,8 +3,6 @@
   <head>
     <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>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.tentative.sub.https.html b/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.tentative.sub.https.html
index 0f91e74256f..2fb2995b391 100644
--- a/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.tentative.sub.https.html
+++ b/tests/wpt/tests/cookiestore/cookieStore_set_domain_parsing.tentative.sub.https.html
@@ -3,8 +3,6 @@
   <head>
     <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>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/tests/cookiestore/resources/domain_parsing-child.sub.https.html b/tests/wpt/tests/cookiestore/resources/domain_parsing-child.sub.https.html
index 96a06399071..888a70eabc2 100644
--- a/tests/wpt/tests/cookiestore/resources/domain_parsing-child.sub.https.html
+++ b/tests/wpt/tests/cookiestore/resources/domain_parsing-child.sub.https.html
@@ -2,8 +2,6 @@
 <html>
 <head>
   <script src="/resources/testharness.js"></script>
-  <script src="/resources/testdriver.js"></script>
-  <script src="/resources/testdriver-vendor.js"></script>
 </head>
 <body>
   <script>
diff --git a/tests/wpt/tests/css/CSS2/i18n/META.yml b/tests/wpt/tests/css/CSS2/i18n/META.yml
index 9fa8c3b6c9b..ad1e4bf0913 100644
--- a/tests/wpt/tests/css/CSS2/i18n/META.yml
+++ b/tests/wpt/tests/css/CSS2/i18n/META.yml
@@ -1,2 +1,2 @@
 suggested_reviewers:
-  - r12a
+  - xfq
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-center-fallback-transition-behavior.html b/tests/wpt/tests/css/css-anchor-position/anchor-center-fallback-transition-behavior.html
index 082b8630e4e..d30a4ddb1d5 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-center-fallback-transition-behavior.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-center-fallback-transition-behavior.html
@@ -6,10 +6,17 @@
 <script src="/resources/testharnessreport.js"></script>
 <style>
   body { margin: 0; }
+  #cb {
+    position: relative;
+    width: 400px;
+    height: 100px;
+    border: 1px solid black;
+  }
   #a1 {
     anchor-name: --a1;
     width: 100px;
     height: 100px;
+    background: green;
   }
   #t1 {
     position-anchor: --a1;
@@ -20,13 +27,16 @@
     position-try-fallbacks: --right;
     width: 200px;
     height: 100px;
+    background: cyan;
   }
   @position-try --right {
     position-area: right;
   }
 </style>
-<div id="a1"></div>
-<div id="t1"></div>
+<div id="cb">
+  <div id="a1"></div>
+  <div id="t1"></div>
+</div>
 <script>
   test(() => {
     assert_equals(t1.offsetLeft, 100, "Positioned using --right fallback");
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-004.html b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-004.html
new file mode 100644
index 00000000000..ada2f591905
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-004.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests getComputedStyle() for inset properties using position-area</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1">
+<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  #container {
+    position: relative;
+    width: 300px;
+    height: 300px;
+  }
+  #anchor {
+    anchor-name: --a;
+    margin-left: 80px;
+    margin-top: 130px;
+    width: 100px;
+    height: 100px;
+  }
+  .anchored {
+    position: absolute;
+    position-anchor: --a;
+    position-area: center center;
+  }
+  #t1 {
+    inset: 10px;
+  }
+  #t2 {
+    inset: auto;
+  }
+</style>
+<div id="container">
+  <div id="anchor"></div>
+  <div id="t1" class="anchored"></div>
+  <div id="t2" class="anchored"></div>
+</div>
+<script>
+  test(() => {
+    const style = getComputedStyle(t1);
+    assert_equals(style.top, "10px");
+    assert_equals(style.left, "10px");
+    assert_equals(style.bottom, "10px");
+    assert_equals(style.right, "10px");
+  }, "position-area does not affect resolved inset properties");
+
+  test(() => {
+    const style = getComputedStyle(t2);
+    assert_equals(style.top, "0px");
+    assert_equals(style.left, "0px");
+    assert_equals(style.bottom, "0px");
+    assert_equals(style.right, "0px");
+  }, "'auto' inset properties resolve to 0px when position-area is non-initial");
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-dynamic.html b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-dynamic.html
new file mode 100644
index 00000000000..2ee47aa6116
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-dynamic.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<title>Implicit anchor element for pseudo-elements using anchor functions - dynamic change</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#implicit">
+<link rel="match" href="position-area-pseudo-element-implicit-anchor-ref.html">
+<style>
+body { margin: 0 }
+#target  {
+    margin-top: 200px;
+    margin-left: 200px;
+    width: 100px;
+    height: 100px;
+    background: blue;
+}
+#target::before, #target::after {
+    width: 100px;
+    height: 100px;
+    position: absolute;
+}
+#target.moved {
+    margin-top: 100px;
+    margin-left: 50px;
+}
+#target::before {
+    position-area: center right;
+    background: green;
+    content:'';
+}
+#target::after {
+    position-area: bottom center;
+    background: green;
+    content:'';
+}
+</style>
+<div id=target></div>
+<script>
+  target.offsetTop;
+  target.classList.add("moved");
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-ref.html b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-ref.html
new file mode 100644
index 00000000000..a95491ddfe6
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor-ref.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>CSS Test Reference</title>
+<style>
+body { margin: 0 }
+#target  {
+    margin-top: 100px;
+    margin-left: 50px;
+    width: 100px;
+    height: 100px;
+    background: blue;
+    position: relative;
+}
+#target > div {
+    position: absolute;
+    width: 100px;
+    height: 100px;
+    background: green;
+}
+#bottom {
+    top: 100px;
+    left: 0px;
+}
+#right {
+    top: 0px;
+    left: 100px;
+}
+</style>
+<div id=target>
+  <div id=bottom></div>
+  <div id=right></div>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html
index 3b876cbd8af..bac3e658542 100644
--- a/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html
+++ b/tests/wpt/tests/css/css-anchor-position/position-area-pseudo-element-implicit-anchor.html
@@ -1,8 +1,7 @@
 <!DOCTYPE html>
 <title>Implicit anchor element for pseudo-elements using anchor functions</title>
 <link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#implicit">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
+<link rel="match" href="position-area-pseudo-element-implicit-anchor-ref.html">
 <style>
 body { margin: 0 }
 #target  {
@@ -17,10 +16,6 @@ body { margin: 0 }
     height: 100px;
     position: absolute;
 }
-#target.moved {
-    margin-top: 200px;
-    margin-left: 200px;
-}
 #target::before {
     position-area: center right;
     background: green;
@@ -33,19 +28,3 @@ body { margin: 0 }
 }
 </style>
 <div id=target></div>
-<script>
-test(() => {
-    assert_equals(getComputedStyle(target, '::before').top, '100px');
-    assert_equals(getComputedStyle(target, '::before').left, '150px');
-    assert_equals(getComputedStyle(target, '::after').top, '200px');
-    assert_equals(getComputedStyle(target, '::after').left, '50px');
-}, "The implicit anchor element of a pseudo-element is its originating element");
-
-test(() => {
-    target.classList.add("moved");
-    assert_equals(getComputedStyle(target, '::before').top, '200px');
-    assert_equals(getComputedStyle(target, '::before').left, '300px');
-    assert_equals(getComputedStyle(target, '::after').top, '300px');
-    assert_equals(getComputedStyle(target, '::after').left, '200px');
-}, "Anchored position after moving");
-</script>
diff --git a/tests/wpt/tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html b/tests/wpt/tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
index c1ab19daec2..4c18c31b8f9 100644
--- a/tests/wpt/tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
+++ b/tests/wpt/tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
@@ -97,7 +97,6 @@ const properties = [
   "-moz-transition-property",
   "-moz-transition-timing-function",
   "-moz-user-focus",
-  "-moz-user-input",
   "-moz-user-modify",
   "-moz-user-select",
   "-moz-window-dragging",
diff --git a/tests/wpt/tests/css/css-contain/contain-size-014.html b/tests/wpt/tests/css/css-contain/contain-size-014.html
new file mode 100644
index 00000000000..5012f7454a3
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-size-014.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>size-contained elements should still ignore children, even with an aspect-ratio</title>
+<link rel="author" title="Psychpsyo" href="psychpsyo@gmail.com">
+<link rel="help" href="https://drafts.csswg.org/css-contain-1/#containment-size">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<style>
+  #outer {
+    position: relative;
+  }
+  #bottom {
+    container-type: size;
+    aspect-ratio: 1;
+    background-color: red;
+    width: 100px;
+  }
+  #top {
+    position: absolute;
+    top: 0;
+    left: 0;
+    background-color: green;
+    width: 100px;
+    height: 100px;
+  }
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="outer">
+  <div id="bottom">
+    <img height="200">
+  </div>
+  <div id="top"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-counter-styles/META.yml b/tests/wpt/tests/css/css-counter-styles/META.yml
index 9b220d37977..3af53f133a6 100644
--- a/tests/wpt/tests/css/css-counter-styles/META.yml
+++ b/tests/wpt/tests/css/css-counter-styles/META.yml
@@ -1,5 +1,5 @@
 spec: https://drafts.csswg.org/css-counter-styles/
 suggested_reviewers:
-  - r12a
+  - xfq
   - svgeesus
   - tabatkins
diff --git a/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html b/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html
new file mode 100644
index 00000000000..f897878fb7a
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-004.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>gap decorations column-rule-color neutral keyframe</title>
+    <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+    <meta name="assert" content="gap decorations column-rule-color value list supports neutral keyframe.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+  </head>
+  <body>
+    <div id="target"></div>
+    <script>
+      test(() => {
+        target.style.rowRuleStyle = 'solid';
+        target.style.rowRuleColor = 'repeat(3, black black) repeat(1, red)';
+        var animation = target.animate([{}, {rowRuleColor: 'repeat(3, red red) repeat(1, black)'}], 1000);
+        animation.pause();
+        animation.currentTime = 500;
+        assert_equals(getComputedStyle(target).rowRuleColor, 'repeat(3, rgb(128, 0, 0) rgb(128, 0, 0)) repeat(1, rgb(128, 0, 0))');
+      }, 'gap decorations row-rule-color value list supports neutral keyframe.');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html b/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html
new file mode 100644
index 00000000000..182b7e866d8
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/gap-decorations-color-neutral-keyframe-005.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>gap decorations column-rule-color neutral keyframe</title>
+    <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+    <meta name="assert" content="gap decorations column-rule-color value list supports neutral keyframe.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+  </head>
+  <body>
+    <div id="target"></div>
+    <script>
+      test(() => {
+        target.style.rowRuleStyle = 'solid';
+        target.style.rowRuleColor = 'repeat(3, black black) red red';
+        var animation = target.animate([{}, {rowRuleColor: 'repeat(3, red red) black black'}], 1000);
+        animation.pause();
+        animation.currentTime = 500;
+        assert_equals(getComputedStyle(target).rowRuleColor, 'repeat(3, rgb(128, 0, 0) rgb(128, 0, 0)) rgb(128, 0, 0) rgb(128, 0, 0)');
+      }, 'gap decorations row-rule-color value list supports neutral keyframe.');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-001.html b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-001.html
new file mode 100644
index 00000000000..657acf811fa
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-001.html
@@ -0,0 +1,49 @@
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>CSS gap color change computed value to non compatible value mid-animation</title>
+  <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+  <link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/web-animations/testcommon.js"></script>
+  <style>
+    #target {
+      column-rule-color: blue;
+      animation: color-anim 2s linear paused;
+    }
+    @keyframes color-anim {
+      from { column-rule-color: red; }
+    }
+  </style>
+</head>
+<body>
+  <div id="target">Dynamic Gap-Color Test</div>
+
+  <script>
+    promise_test(async () => {
+      const el = document.getElementById('target');
+      const anim = el.getAnimations()[0];
+
+      assert_equals(getComputedStyle(el).columnRuleColor, 'rgb(255, 0, 0)');
+
+      // Jump to 50% of the animation.
+      anim.currentTime = anim.effect.getComputedTiming().duration / 2;
+
+      const intermediate = getComputedStyle(el).columnRuleColor;
+      assert_equals(
+        intermediate,
+        'rgb(128, 0, 128)' // The color at 50% of the animation.
+      );
+
+      el.style.columnRuleColor = 'repeat(2, red)';
+
+      const snapped = getComputedStyle(el).columnRuleColor;
+      assert_equals(
+        snapped,
+        'repeat(2, rgb(255, 0, 0))'
+      );
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-002.html b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-002.html
new file mode 100644
index 00000000000..1578a26e2db
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-002.html
@@ -0,0 +1,49 @@
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>CSS gap color change computed value to compatible value mid-animation</title>
+  <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+  <link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/web-animations/testcommon.js"></script>
+  <style>
+    #target {
+      column-rule-color: blue blue;
+      animation: color-anim 2s linear paused;
+    }
+    @keyframes color-anim {
+      from { column-rule-color: red; }
+    }
+  </style>
+</head>
+<body>
+  <div id="target">Dynamic Gap-Color Test</div>
+
+  <script>
+    promise_test(async () => {
+      const el = document.getElementById('target');
+      const anim = el.getAnimations()[0];
+
+      assert_equals(getComputedStyle(el).columnRuleColor, 'rgb(255, 0, 0)');
+
+      // Jump to 50% of the animation.
+      anim.currentTime = anim.effect.getComputedTiming().duration / 2;
+
+      const snapped = getComputedStyle(el).columnRuleColor;
+      assert_equals(
+        snapped,
+        'rgb(0, 0, 255) rgb(0, 0, 255)'
+      );
+
+      el.style.columnRuleColor = 'blue';
+
+      const intermediate = getComputedStyle(el).columnRuleColor;
+      assert_equals(
+        intermediate,
+        'rgb(128, 0, 128)' // The color at 50% of the animation.
+      );
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html
new file mode 100644
index 00000000000..693352bc81c
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-conversion-crash.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html class="test-wait">
+<title>rule-color interpolation</title>
+<link rel="author" title="Kevin Ellis" href="mailto:kevers@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+<style>
+  #target {
+    animation: anim 1s paused;
+  }
+
+  @keyframes anim {
+    from {
+      column-rule-color: green;
+    }
+  }
+</style>
+<script>
+  async function runTest() {
+    requestAnimationFrame(async () => {
+      const anim = document.getAnimations()[0];
+      await anim.ready;
+      document.body.style.zoom = 2;
+      requestAnimationFrame(() => {
+        document.documentElement.classList.remove('test-wait');
+      });
+    });
+  }
+
+  window.onload = runTest();
+</script>
+<body>
+  <div id="target">Hello world</div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html
new file mode 100644
index 00000000000..6c2b04cb646
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-multiple-values-001.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="UTF-8">
+  <title>rule-color interpolation</title>
+  <link rel="author" title="Javier Contreras" href="mailto:javiercon@chromium.org">
+  <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/css/support/interpolation-testcommon.js"></script>
+  <style>
+    .parent {
+      row-rule-style: solid;
+      row-rule-color: white;
+    }
+
+    .target {
+      display: flex;
+      row-gap: 10px;
+      row-rule-width: 10px;
+      row-rule-style: solid;
+      row-rule-color: black black black;
+      flex-wrap: wrap;
+      column-rule-color: 10px;
+      column-rule-style: solid;
+      column-rule-color: black red blue;
+    }
+  </style>
+</head>
+<body>
+  <script>
+    test_interpolation({
+      property: 'row-rule-color',
+      from: neutralKeyframe,
+      to: 'red red red',
+    }, [
+      { at: -0.3, expect: 'black black black' },
+      { at: 0, expect: 'black black black' },
+      { at: 0.3, expect: 'rgb(77, 0, 0) rgb(77, 0, 0) rgb(77, 0, 0)' },
+      { at: 0.6, expect: 'rgb(153, 0, 0) rgb(153, 0, 0) rgb(153, 0, 0)' },
+      { at: 1, expect: 'red red red' },
+      { at: 1.5, expect: 'red red red' },
+    ]);
+
+    test_interpolation({
+      property: 'column-rule-color',
+      from: neutralKeyframe,
+      to: 'red blue red',
+    }, [
+      { at: -0.3, expect: 'black red blue' },
+      { at: 0, expect: 'black red blue' },
+      { at: 0.3, expect: 'rgb(77, 0, 0) rgb(179, 0, 77) rgb(77, 0, 179)' },
+      { at: 0.6, expect: 'rgb(153, 0, 0) rgb(102, 0, 153) rgb(153, 0, 102)' },
+      { at: 1, expect: 'red blue red' },
+      { at: 1.5, expect: 'red blue red' },
+    ]);
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html
new file mode 100644
index 00000000000..b1b1eaee020
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-color-interpolation-repeaters-001.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="UTF-8">
+    <title>rule-color interpolation with repeaters</title>
+    <link rel="author" title="Javier Contreras" href="mailto:javiercon@chromium.org">
+    <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-color">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+    <style>
+        .parent {
+            row-rule-style: solid;
+            row-rule-color: white;
+        }
+
+        .target {
+            row-gap: 40px;
+            column-gap: 40px;
+            row-rule-width: 10px;
+            row-rule-style: solid;
+            row-rule-color: black repeat(2, red blue) black;
+            flex-wrap: wrap;
+            column-rule-width: 10px;
+            column-rule-style: solid;
+            column-rule-color: repeat(2, black red);
+        }
+    </style>
+</head>
+<body>
+    <script>
+        // Valid Interpolations:
+        test_interpolation({
+            property: 'row-rule-color',
+            from: neutralKeyframe,
+            to: 'red repeat(2, black black) blue',
+        }, [
+            { at: -0.3, expect: 'black repeat(2, red blue) black' },
+            { at: 0, expect: 'black repeat(2, red blue) black' },
+            { at: 0.3, expect: 'rgb(77, 0, 0) repeat(2, rgb(179, 0, 0) rgb(0, 0, 179)) rgb(0, 0, 77)' },
+            { at: 0.6, expect: 'rgb(153, 0, 0) repeat(2, rgb(102, 0, 0) rgb(0, 0, 102)) rgb(0, 0, 153)' },
+            { at: 1, expect: 'rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)' },
+            { at: 1.5, expect: 'rgb(255, 0, 0) repeat(2, rgb(0, 0, 0) rgb(0, 0, 0)) rgb(0, 0, 255)' },
+        ]);
+        test_interpolation({
+            property: 'column-rule-color',
+            from: neutralKeyframe,
+            to: 'repeat(2, red black)',
+        }, [
+            { at: -0.3, expect: 'repeat(2, black red)' },
+            { at: 0, expect: 'repeat(2, black red)' },
+            { at: 0.3, expect: 'repeat(2, rgb(77, 0, 0) rgb(179, 0, 0))' },
+            { at: 0.6, expect: 'repeat(2, rgb(153, 0, 0) rgb(102, 0, 0))' },
+            { at: 1, expect: 'repeat(2, red black)' },
+            { at: 1.5, expect: 'repeat(2, red black)' },
+        ]);
+        test_interpolation({
+            property: 'column-rule-color',
+            from: 'repeat(auto, black black)',
+            to: 'repeat(auto, blue red)',
+        }, [
+            { at: -0.3, expect: 'repeat(auto, black black)' },
+            { at: 0, expect: 'repeat(auto, black black)' },
+            { at: 0.3, expect: 'repeat(auto, rgb(0, 0, 77) rgb(77, 0, 0))' },
+            { at: 0.6, expect: 'repeat(auto, rgb(0, 0, 153) rgb(153, 0, 0))' },
+            { at: 1, expect: 'repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0))' },
+            { at: 1.5, expect: 'repeat(auto, rgb(0, 0, 255) rgb(255, 0, 0)' },
+        ]);
+
+        // // Shouldn't interpolate, length of the list is different:
+        test_no_interpolation({
+            property: 'row-rule-color',
+            from: neutralKeyframe,
+            to: 'repeat(2, blue blue) white',
+        });
+        test_no_interpolation({
+            property: 'row-rule-color',
+            from: neutralKeyframe,
+            to: 'repeat(2, red red) repeat(2, blue blue)',
+        });
+
+        // // Shouldn't interpolate, repeaters are not compatible:
+        test_no_interpolation({
+            property: 'column-rule-color',
+            from: neutralKeyframe,
+            to: 'repeat(3, white white)',
+        });
+        test_no_interpolation({
+            property: 'column-rule-color',
+            from: neutralKeyframe,
+            to: 'repeat(2, yellow orange green)',
+        });
+        test_no_interpolation({
+            property: 'row-rule-color',
+            from: neutralKeyframe,
+            to: 'black repeat(3, red white) blue',
+        });
+        test_no_interpolation({
+            property: 'row-rule-color',
+            from: neutralKeyframe,
+            to: 'white repeat(2, blue blue blue) yellow',
+        });
+        test_no_interpolation({
+            property: 'column-rule-color',
+            from: 'repeat(auto, red black)',
+            to: 'repeat(3, black red)',
+        });
+        test_no_interpolation({
+            property: 'column-rule-color',
+            from: 'repeat(auto, black black)',
+            to: 'repeat(auto, red white yellow)',
+        });
+
+        // // Shouldn't interpolate, repeater and a color are not compatible:
+        test_no_interpolation({
+            property: 'column-rule-color',
+            from: neutralKeyframe,
+            to: 'white',
+        });
+    </script>
+</body>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-001.html b/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-001.html
new file mode 100644
index 00000000000..041a1b168e8
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-001.html
@@ -0,0 +1,50 @@
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>CSS gap width change computed value to non compatible value mid-animation</title>
+  <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-width">
+  <link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/web-animations/testcommon.js"></script>
+  <style>
+    #target {
+      column-rule-width: 10px;
+      column-rule-style: solid;
+      animation: color-anim 2s linear paused;
+    }
+    @keyframes color-anim {
+      from { column-rule-width: 0px; }
+    }
+  </style>
+</head>
+<body>
+  <div id="target">Dynamic Gap-Width Test</div>
+
+  <script>
+    promise_test(async () => {
+      const el = document.getElementById('target');
+      const anim = el.getAnimations()[0];
+
+      assert_equals(getComputedStyle(el).columnRuleWidth, '0px');
+
+      // Jump to 50% of the animation.
+      anim.currentTime = anim.effect.getComputedTiming().duration / 2;
+
+      const intermediate = getComputedStyle(el).columnRuleWidth;
+      assert_equals(
+        intermediate,
+        '5px' // The width at 50% of the animation.
+      );
+
+      el.style.columnRuleWidth = 'repeat(2, 10px)';
+
+      const snapped = getComputedStyle(el).columnRuleWidth;
+      assert_equals(
+        snapped,
+        'repeat(2, 10px)'
+      );
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-002.html b/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-002.html
new file mode 100644
index 00000000000..994b7098b60
--- /dev/null
+++ b/tests/wpt/tests/css/css-gaps/animation/rule-width-interpolation-conversion-002.html
@@ -0,0 +1,50 @@
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>CSS gap width change computed value to non compatible value mid-animation</title>
+  <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#column-row-rule-width">
+  <link rel="author" title="Javier Contreras" href="mailto:javiercon@microsoft.com">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/web-animations/testcommon.js"></script>
+  <style>
+    #target {
+      column-rule-width: 10px 10px;
+      column-rule-style: solid;
+      animation: color-anim 2s linear paused;
+    }
+    @keyframes color-anim {
+      from { column-rule-width: 0px; }
+    }
+  </style>
+</head>
+<body>
+  <div id="target">Dynamic Gap-Width Test</div>
+
+  <script>
+    promise_test(async () => {
+      const el = document.getElementById('target');
+      const anim = el.getAnimations()[0];
+
+      assert_equals(getComputedStyle(el).columnRuleWidth, '0px');
+
+      // Jump to 50% of the animation.
+      anim.currentTime = anim.effect.getComputedTiming().duration / 2;
+
+      const snapped = getComputedStyle(el).columnRuleWidth;
+      assert_equals(
+        snapped,
+        '10px 10px'
+      );
+
+      el.style.columnRuleWidth = '10px';
+      const intermediate = getComputedStyle(el).columnRuleWidth;
+      assert_equals(
+        intermediate,
+        '5px'
+      );
+
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-012.html b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-012.html
index 2f1f95c00c8..764543219e7 100644
--- a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-012.html
+++ b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-012.html
@@ -21,7 +21,7 @@
         column-rule-style: solid;
         column-rule-color: red;
         column-rule-width: 2px;
-        gap-rule-paint-order: column-over-row;
+        gap-rule-overlap: column-over-row;
         width: 170px;
         flex-wrap: wrap;
     }
diff --git a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-015.html b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-015.html
index 8d100978205..3a428b1fa0c 100644
--- a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-015.html
+++ b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-015.html
@@ -25,7 +25,7 @@
         row-rule-style: solid;
         row-rule-color: blue;
         row-rule-width: 10px;
-        gap-rule-paint-order: column-over-row;
+        gap-rule-overlap: column-over-row;
     }
 
     .items {
diff --git a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-016.html b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-016.html
index 9f956369d48..bd6b3a1d05f 100644
--- a/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-016.html
+++ b/tests/wpt/tests/css/css-gaps/flex/flex-gap-decorations-016.html
@@ -25,7 +25,7 @@
         row-rule-style: solid;
         row-rule-color: blue;
         row-rule-width: 10px;
-        gap-rule-paint-order: column-over-row;
+        gap-rule-overlap: column-over-row;
     }
 
     .items {
diff --git a/tests/wpt/tests/css/css-gaps/grid/grid-gap-decorations-023.html b/tests/wpt/tests/css/css-gaps/grid/grid-gap-decorations-023.html
index 706f66ebcfa..c5f6b3c156b 100644
--- a/tests/wpt/tests/css/css-gaps/grid/grid-gap-decorations-023.html
+++ b/tests/wpt/tests/css/css-gaps/grid/grid-gap-decorations-023.html
@@ -25,7 +25,7 @@
         row-rule-width: 5px;
         column-rule-break: none;
         row-rule-break: none;
-        gap-rule-paint-order: column-over-row;
+        gap-rule-overlap: column-over-row;
     }
     .grid-item {
         background-color: gray;
diff --git a/tests/wpt/tests/css/css-gaps/grid/subgrid/subgrid-gap-decorations-017.html b/tests/wpt/tests/css/css-gaps/grid/subgrid/subgrid-gap-decorations-017.html
index c175dfa6563..dcd071e3d78 100644
--- a/tests/wpt/tests/css/css-gaps/grid/subgrid/subgrid-gap-decorations-017.html
+++ b/tests/wpt/tests/css/css-gaps/grid/subgrid/subgrid-gap-decorations-017.html
@@ -21,7 +21,7 @@
 
     column-rule: skyblue solid 10px;
     row-rule: cornflowerblue solid 10px;
-    gap-rule-paint-order: row-over-column;
+    gap-rule-overlap: row-over-column;
   }
 
   .subgrid {
@@ -36,7 +36,7 @@
     column-rule: green solid 10px;
     row-rule: blue solid 10px;
 
-    gap-rule-paint-order: column-over-row;
+    gap-rule-overlap: column-over-row;
   }
 
   .item {
diff --git a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-computed.html b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-computed.html
similarity index 72%
rename from tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-computed.html
rename to tests/wpt/tests/css/css-gaps/parsing/rule-overlap-computed.html
index 441be8670d7..efe7d74cfab 100644
--- a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-computed.html
+++ b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-computed.html
@@ -2,7 +2,7 @@
 <html>
 <head>
   <meta charset="utf-8">
-  <title>CSS Gaps: gap-rule-paint-order getComputedStyle()</title>
+  <title>CSS Gaps: gap-rule-overlap getComputedStyle()</title>
   <link rel="author" title="Javier Contreras Tenorio" href="mailto:javiercon@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#paint-order">
   <script src="/resources/testharness.js"></script>
@@ -13,8 +13,8 @@
 <body>
   <div id="target"></div>
   <script>
-    test_computed_value("gap-rule-paint-order", "row-over-column");
-    test_computed_value("gap-rule-paint-order", "column-over-row");
+    test_computed_value("gap-rule-overlap", "row-over-column");
+    test_computed_value("gap-rule-overlap", "column-over-row");
   </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-invalid.html b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-invalid.html
similarity index 57%
rename from tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-invalid.html
rename to tests/wpt/tests/css/css-gaps/parsing/rule-overlap-invalid.html
index b18349a1aed..7d42590a01f 100644
--- a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-invalid.html
+++ b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-invalid.html
@@ -2,7 +2,7 @@
 <html>
 <head>
   <meta charset="utf-8">
-  <title>CSS Gaps: parsing gap-rule-paint-order with invalid values</title>
+  <title>CSS Gaps: parsing gap-rule-overlap with invalid values</title>
   <link rel="author" title="Javier Contreras Tenorio" href="mailto:javiercon@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#paint-order">
   <script src="/resources/testharness.js"></script>
@@ -12,11 +12,11 @@
 <body>
   <div id="target"></div>
   <script>
-    test_invalid_value('gap-rule-paint-order', 'auto');
-    test_invalid_value('gap-rule-paint-order', 'true');
-    test_invalid_value('gap-rule-paint-order', 'none');
-    test_invalid_value('gap-rule-paint-order', '10px');
-    test_invalid_value('gap-rule-paint-order', '10%');
+    test_invalid_value('gap-rule-overlap', 'auto');
+    test_invalid_value('gap-rule-overlap', 'true');
+    test_invalid_value('gap-rule-overlap', 'none');
+    test_invalid_value('gap-rule-overlap', '10px');
+    test_invalid_value('gap-rule-overlap', '10%');
   </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-valid.html b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-valid.html
similarity index 70%
rename from tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-valid.html
rename to tests/wpt/tests/css/css-gaps/parsing/rule-overlap-valid.html
index 6a4294f7f4b..295a1e2c21c 100644
--- a/tests/wpt/tests/css/css-gaps/parsing/rule-paint-order-valid.html
+++ b/tests/wpt/tests/css/css-gaps/parsing/rule-overlap-valid.html
@@ -2,7 +2,7 @@
 <html>
 <head>
   <meta charset="utf-8">
-  <title>CSS Gaps: parsing gap-rule-paint-order valid values</title>
+  <title>CSS Gaps: parsing gap-rule-overlap valid values</title>
   <link rel="author" title="Javier Contreras Tenorio" href="mailto:javiercon@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-gaps-1/#paint-order">
   <script src="/resources/testharness.js"></script>
@@ -12,8 +12,8 @@
 <body>
   <div id="target"></div>
   <script>
-    test_valid_value('gap-rule-paint-order', 'row-over-column');
-    test_valid_value('gap-rule-paint-order', 'column-over-row');
+    test_valid_value('gap-rule-overlap', 'row-over-column');
+    test_valid_value('gap-rule-overlap', 'column-over-row');
   </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001-ref.html
index fff6cf21381..17fa23f3254 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `align-content` in masonry axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -30,6 +31,11 @@ item {
 }
 
 .tall { padding-top:30px; grid-row:span 2; }
+
+.safe {
+  height: 10px;
+}
+
 </style>
 </head>
 <body>
@@ -52,6 +58,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:end">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -70,6 +85,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:center">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -88,6 +112,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001.html
index 73609582fdb..fe6dd1a5d12 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-001.html
@@ -11,6 +11,7 @@
                  in the masonry axis of a masonry grid container
                  and the grid container's baseline is also shifted accordingly.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-align-content-001-ref.html">
   <style>
@@ -35,6 +36,9 @@ item {
   color: #fff;
 }
 
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -57,6 +61,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:end">
   <item style="padding-top:30px">1</item>
   <item>2</item>
@@ -75,6 +88,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:center">
   <item style="padding-top:30px">1</item>
   <item>2</item>
@@ -93,6 +115,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item style="padding-top:30px">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002-ref.html
index 67318b323a2..2b063694542 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `align-content` in masonry axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -31,6 +32,11 @@ item {
 }
 
 .tall { padding-right:30px; grid-row:span 2; }
+
+.safe {
+  width: 10px;
+  margin-right: 50px;
+}
 </style>
 </head>
 <body>
@@ -53,6 +59,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:end">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -71,6 +86,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:center">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -89,6 +113,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002.html
index b53c930edc9..15fd7d1a003 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-002.html
@@ -10,6 +10,7 @@
         content="Test passes if align-content shifts content
                  in the masonry axis of a vertical writing-mode masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-align-content-002-ref.html">
   <style>
@@ -35,6 +36,11 @@ item {
   color: #fff;
 }
 
+.safe {
+  width: 10px;
+  margin-right: 50px;
+}
+
 </style>
 </head>
 <body>
@@ -57,6 +63,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:end">
   <item style="padding-right:30px">1</item>
   <item>2</item>
@@ -75,6 +90,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:center">
   <item style="padding-right:30px">1</item>
   <item>2</item>
@@ -93,6 +117,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item style="padding-right:30px">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003-ref.html
index 9da15c0f403..cf6eb9e9ca2 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `align-content` in grid axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
     html,body {
       color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -32,6 +33,10 @@
     }
 
     .tall { grid-row: span 2; padding: 3px 11px 1px 13px; }
+
+    .safe {
+      height: 10px;
+    }
   </style>
 </head>
 <body>
@@ -54,6 +59,15 @@
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:end">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -72,6 +86,15 @@
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:center">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -90,6 +113,15 @@
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:stretch; grid-template-rows: repeat(4,29.25px);">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003.html
index 6edb208709c..7e6fb39fa11 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-003.html
@@ -11,6 +11,7 @@
                  in the grid axis of a masonry grid container
                  and the grid container's baseline is also shifted accordingly.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-align-content-003-ref.html">
   <style>
@@ -40,6 +41,10 @@ item {
 }
 
 .tall { padding: 3px 11px 1px 13px; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -62,6 +67,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:end">
   <item class="tall">1</item>
   <item>2</item>
@@ -80,6 +94,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:center">
   <item class="tall">1</item>
   <item>2</item>
@@ -98,6 +121,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item class="tall">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004-ref.html
index de11c836b8d..b034b3ee41f 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `align-content` in grid axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -31,6 +32,10 @@ item {
 }
 
 .tall { grid-column: span 2; padding-top: 30px; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -53,6 +58,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:end">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -71,6 +85,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:center">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -89,6 +112,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004.html
index c56c1131c5d..3e400d6607a 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-align-content-004.html
@@ -10,6 +10,7 @@
         content="Test passes if align-content distributes tracks
                  in the grid axis of a vertical writing-mode masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-align-content-004-ref.html">
   <style>
@@ -37,6 +38,10 @@ item {
 }
 
 .tall { padding-top: 30px; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -59,6 +64,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe start" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:end">
   <item class="tall">1</item>
   <item>2</item>
@@ -77,6 +91,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe end" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:center">
   <item class="tall">1</item>
   <item>2</item>
@@ -95,6 +118,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="align-content:safe center" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="align-content:stretch">
   <item class="tall">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001-ref.html
index f7d9ccf48f1..98b408fff00 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `justify-content` in grid axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -30,6 +31,11 @@ item {
 }
 
 .tall { padding-top:30px; grid-row:span 2; }
+
+.safe {
+  width: 10px;
+  margin-right: 75px;
+}
 </style>
 </head>
 <body>
@@ -52,6 +58,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -70,6 +85,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -88,6 +112,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001.html
index 8140d55beaf..c783f5c6732 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-001.html
@@ -10,6 +10,7 @@
         content="Test passes if justify-content distributes tracks
                  in the grid axis of a masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-justify-content-001-ref.html">
   <style>
@@ -34,6 +35,10 @@ item {
   color: #fff;
 }
 
+.safe {
+  width: 10px;
+  margin-right: 75px;
+}
 </style>
 </head>
 <body>
@@ -56,6 +61,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item style="padding-top:30px">1</item>
   <item>2</item>
@@ -74,6 +88,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item style="padding-top:30px">1</item>
   <item>2</item>
@@ -92,6 +115,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item style="padding-top:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item style="padding-top:30px">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002-ref.html
index 6889af7eacc..3a9562f0656 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `justify-content` in grid axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -31,6 +32,10 @@ item {
 }
 
 .tall { padding-right:30px; grid-row:span 2; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -53,6 +58,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -71,6 +85,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
@@ -89,6 +112,15 @@ item {
   <item style="grid-column:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item style="grid-column:1/2" class="tall">1</item>
+  <item style="grid-column:2/3">2</item>
+  <item style="grid-column:3/4">3</item>
+  <item style="grid-column:4/5">4</item>
+  <item style="grid-column:2/3">5</item>
+  <item style="grid-column:3/4">6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item style="grid-column:1/2" class="tall">1</item>
   <item style="grid-column:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002.html
index d6e593b805d..89d09dddb41 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-002.html
@@ -10,6 +10,7 @@
         content="Test passes if justify-content distributes tracks
                  in the grid axis of a vertical writing-mode masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-justify-content-002-ref.html">
   <style>
@@ -35,6 +36,9 @@ item {
   color: #fff;
 }
 
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -57,6 +61,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item style="padding-right:30px">1</item>
   <item>2</item>
@@ -75,6 +88,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item style="padding-right:30px">1</item>
   <item>2</item>
@@ -93,6 +115,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item style="padding-right:30px">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item style="padding-right:30px">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003-ref.html
index 81d0fba4107..e8de6baa2fc 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `justify-content` in masonry axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -30,6 +31,11 @@ item {
 }
 
 .tall { grid-column:span 2; padding-left: 30px; }
+
+.safe {
+  width: 10px;
+  margin-right: 50px;
+}
 </style>
 </head>
 <body>
@@ -52,6 +58,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -70,6 +85,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -88,6 +112,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003.html
index 03604ef0dc6..51a84163262 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-003.html
@@ -10,6 +10,7 @@
         content="Test passes if justify-content shifts content
                  in the masonry axis of a masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-justify-content-003-ref.html">
   <style>
@@ -36,6 +37,11 @@ item {
 }
 
 .tall { padding-left: 30px; }
+
+.safe {
+  width: 10px;
+  margin-right: 50px;
+}
 </style>
 </head>
 <body>
@@ -58,6 +64,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item class="tall">1</item>
   <item>2</item>
@@ -76,6 +91,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item class="tall">1</item>
   <item>2</item>
@@ -94,6 +118,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item class="tall">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004-ref.html
index 43af71fc01f..e0284f3b274 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004-ref.html
@@ -7,6 +7,7 @@
   <meta charset="utf-8">
   <title>Reference: Masonry layout with `justify-content` in masonry axis</title>
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <style>
 html,body {
   color:black; background-color:white; font:15px/1 monospace; padding:0; margin:0;
@@ -33,6 +34,10 @@ item {
 }
 
 .tall { grid-column: span 2; padding: 11px 3px 13px 7px; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -55,6 +60,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -73,6 +87,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
@@ -91,6 +114,15 @@ item {
   <item style="grid-row:3/4">6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item class="tall" style="grid-row:1/2">1</item>
+  <item style="grid-row:2/3">2</item>
+  <item style="grid-row:3/4">3</item>
+  <item style="grid-row:4/5">4</item>
+  <item style="grid-row:2/3">5</item>
+  <item style="grid-row:3/4">6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item class="tall" style="grid-row:1/2">1</item>
   <item style="grid-row:2/3">2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004.html b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004.html
index 1f04a5a22d3..6099aca4aad 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/alignment/masonry-justify-content-004.html
@@ -10,6 +10,7 @@
         content="Test passes if justify-content shifts content
                  in the masonry axis of a vertical writing-mode masonry grid container.">
   <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
   <link rel="help" href="https://drafts.csswg.org/css-grid-3/#alignment">
   <link rel="match" href="masonry-justify-content-004-ref.html">
   <style>
@@ -39,6 +40,10 @@ item {
 }
 
 .tall { padding: 11px 3px 13px 7px; }
+
+.safe {
+  height: 10px;
+}
 </style>
 </head>
 <body>
@@ -61,6 +66,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe start" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:end">
   <item class="tall">1</item>
   <item>2</item>
@@ -79,6 +93,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe end" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:center">
   <item class="tall">1</item>
   <item>2</item>
@@ -97,6 +120,15 @@ item {
   <item>6</item>
 </grid>
 
+<grid style="justify-content:safe center" class="safe">
+  <item class="tall">1</item>
+  <item>2</item>
+  <item>3</item>
+  <item>4</item>
+  <item>5</item>
+  <item>6</item>
+</grid>
+
 <grid style="justify-content:stretch">
   <item class="tall">1</item>
   <item>2</item>
diff --git a/tests/wpt/tests/css/css-grid/masonry/tentative/order/masonry-order-001-ref.html b/tests/wpt/tests/css/css-grid/masonry/tentative/order/masonry-order-001-ref.html
index 6f20bd05838..94a8b18d62c 100644
--- a/tests/wpt/tests/css/css-grid/masonry/tentative/order/masonry-order-001-ref.html
+++ b/tests/wpt/tests/css/css-grid/masonry/tentative/order/masonry-order-001-ref.html
@@ -16,7 +16,6 @@
       display: inline-grid;
       gap: 10px 20px;
       grid-template-columns:  repeat(4,auto);
-      grid-template-rows: masonry;
       color: #444;
       border: 1px solid;
       padding: 2px;
@@ -29,15 +28,25 @@
       margin: 3px;
       border: 5px solid blue;
     }
+
+    flex {
+      display: flex;
+      flex-direction: column;
+      height: fit-content;
+    }
   </style>
 </head>
 <body>
 
 <grid>
-  <item>1</item>
-  <item style="margin-top:10px">4</item>
-  <item>6</item>
-  <item>2</item>
-  <item style="grid-column: span 2">5</item>
-  <item>3</item>
+  <item style="height: fit-content;">1</item>
+  <flex style="gap: 10px;">
+    <item style="margin-top:10px; height: fit-content; width: fit-content;">4</item>
+    <item style="transform: translateX(-91px); width: calc(200% - 36px);">5</item>
+  </flex>
+  <flex style="gap: 10px;">
+    <item style="height: fit-content">6</item>
+    <item >3</item>
+  </flex>
+  <item style="height: fit-content">2</item>
 </grid>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-invalid.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-invalid.html
index ef2d31bc262..9f9f173375d 100644
--- a/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-invalid.html
+++ b/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-invalid.html
@@ -27,6 +27,9 @@ test_invalid_value("grid-template-columns", 'repeat(auto-fill, -10px)');
 test_invalid_value("grid-template-columns", 'repeat(auto-fill, 10px) repeat(auto-fit, 20%)');
 test_invalid_value("grid-template-columns", '[auto] 1px');
 test_invalid_value("grid-template-columns", '-5fr repeat(auto-fill, auto)');
+test_invalid_value("grid-template-columns", '-10px repeat(auto-fill, min-content)');
+test_invalid_value("grid-template-columns", '-20% repeat(auto-fit, max-content)');
+test_invalid_value("grid-template-columns", 'repeat(auto-fill, fit-content)');
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html
deleted file mode 100644
index 126e705113a..00000000000
--- a/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-auto-valid.tentative.html
+++ /dev/null
@@ -1,22 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: parsing grid-template-columns with valid values</title>
-<link rel="help" href="https://drafts.csswg.org/css-grid-3/#masonry-intrinsic-repeat">
-<meta name="assert" content="grid-template-columns supports the full grammar 'none | <track-list> | <auto-track-list>'.">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="/css/support/parsing-testcommon.js"></script>
-</head>
-<body>
-<script>
-// <auto-repeat>  = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <auto-or-fixed-size> ]+ <line-names>? )
-// <auto-or-fixed-size> = [<fixed-size> | auto]
-test_valid_value("grid-template-columns", 'repeat(auto-fill, auto)');
-test_valid_value("grid-template-columns", 'repeat(auto-fit, auto 100px auto)');
-test_valid_value("grid-template-columns", 'repeat(auto-fill, minmax(30px, 5fr) [two] auto)');
-test_valid_value("grid-template-columns", 'repeat(auto-fit, [three] auto [four])');
-</script>
-</body>
-</html>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html
new file mode 100644
index 00000000000..eb5b826b7cc
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/parsing/grid-template-columns-repeat-intrinsic-valid.tentative.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Grid Layout Test: parsing grid-template-columns with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-grid-3/#masonry-intrinsic-repeat">
+<meta name="assert" content="grid-template-columns supports the full grammar 'none | <track-list> | <auto-track-list>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// <auto-repeat>  = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <intrinsic-or-fixed-size> ]+ <line-names>? )
+// <intrinsic-or-fixed-size> = [<fixed-size> | <intrinsic-size>]
+test_valid_value("grid-template-columns", 'repeat(auto-fill, auto)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, auto 100px auto)');
+test_valid_value("grid-template-columns", 'repeat(auto-fill, minmax(30px, 5fr) [two] auto)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, [three] auto [four])');
+
+test_valid_value("grid-template-columns", 'repeat(auto-fill, min-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, min-content 100px min-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fill, minmax(30px, 5fr) [two] min-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, [three] min-content [four])');
+
+test_valid_value("grid-template-columns", 'repeat(auto-fill, max-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, max-content 100px max-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fill, minmax(30px, 5fr) [two] max-content)');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, [three] max-content [four])');
+
+test_valid_value("grid-template-columns", 'repeat(auto-fill, fit-content(200px))');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, fit-content(200px) 100px fit-content(200px))');
+test_valid_value("grid-template-columns", 'repeat(auto-fill, minmax(30px, 5fr) [two] fit-content(200px))');
+test_valid_value("grid-template-columns", 'repeat(auto-fit, [three] fit-content(200px) [four])');
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-invalid.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-invalid.html
index d023c3677c3..192b392d02c 100644
--- a/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-invalid.html
+++ b/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-invalid.html
@@ -27,6 +27,9 @@ test_invalid_value("grid-template-rows", 'repeat(auto-fill, -10px)');
 test_invalid_value("grid-template-rows", 'repeat(auto-fill, 10px) repeat(auto-fit, 20%)');
 test_invalid_value("grid-template-rows", '[auto] 1px');
 test_invalid_value("grid-template-rows", '-10px repeat(auto-fit, auto)');
+test_invalid_value("grid-template-rows", '-10px repeat(auto-fill, min-content)');
+test_invalid_value("grid-template-rows", '-20% repeat(auto-fit, max-content)');
+test_invalid_value("grid-template-rows", 'repeat(auto-fill, fit-content)');
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html
deleted file mode 100644
index ad8871f45ad..00000000000
--- a/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-auto-valid.tentative.html
+++ /dev/null
@@ -1,22 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<title>CSS Grid Layout Test: parsing grid-template-rows with valid values</title>
-<link rel="help" href="https://drafts.csswg.org/css-grid-3/#masonry-intrinsic-repeat">
-<meta name="assert" content="grid-template-rows supports the full grammar 'none | <track-list> | <auto-track-list>'.">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="/css/support/parsing-testcommon.js"></script>
-</head>
-<body>
-<script>
-// <auto-repeat>  = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <auto-or-fixed-size> ]+ <line-names>? )
-// <auto-or-fixed-size> = [<fixed-size> | auto]
-test_valid_value("grid-template-rows", 'repeat(auto-fill, auto)');
-test_valid_value("grid-template-rows", 'repeat(auto-fit, auto 100px auto)');
-test_valid_value("grid-template-rows", 'repeat(auto-fill, minmax(30px, 5fr) [two] auto)');
-test_valid_value("grid-template-rows", 'repeat(auto-fit, [three] auto [four])');
-</script>
-</body>
-</html>
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html
new file mode 100644
index 00000000000..a3975eb4007
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/parsing/grid-template-rows-repeat-intrinsic-valid.tentative.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Grid Layout Test: parsing grid-template-rows with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-grid-3/#masonry-intrinsic-repeat">
+<meta name="assert" content="grid-template-rows supports the full grammar 'none | <track-list> | <auto-track-list>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// <auto-repeat>  = repeat( [ auto-fill | auto-fit ] , [ <line-names>? <intrinsic-or-fixed-size> ]+ <line-names>? )
+// <intrinsic-or-fixed-size> = [<fixed-size> | <intrinsic-size>]
+test_valid_value("grid-template-rows", 'repeat(auto-fill, auto)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, auto 100px auto)');
+test_valid_value("grid-template-rows", 'repeat(auto-fill, minmax(30px, 5fr) [two] auto)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, [three] auto [four])');
+
+test_valid_value("grid-template-rows", 'repeat(auto-fill, min-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, min-content 100px min-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fill, minmax(30px, 5fr) [two] min-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, [three] min-content [four])');
+
+test_valid_value("grid-template-rows", 'repeat(auto-fill, max-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, max-content 100px max-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fill, minmax(30px, 5fr) [two] max-content)');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, [three] max-content [four])');
+
+
+test_valid_value("grid-template-rows", 'repeat(auto-fill, fit-content(200px))');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, fit-content(200px) 100px fit-content(200px))');
+test_valid_value("grid-template-rows", 'repeat(auto-fill, minmax(30px, 5fr) [two] fit-content(200px))');
+test_valid_value("grid-template-rows", 'repeat(auto-fit, [three] fit-content(200px) [four])');
+</script>
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-mixins/contents-rule.html b/tests/wpt/tests/css/css-mixins/contents-rule.html
new file mode 100644
index 00000000000..abd380e14e4
--- /dev/null
+++ b/tests/wpt/tests/css/css-mixins/contents-rule.html
@@ -0,0 +1,87 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Mixins: Mixins depending on other mixins</title>
+    <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#apply-rule">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style>
+      @mixin --m1(@contents) {
+        @contents;
+      }
+      #e1 {
+        color: red;
+        @apply --m1 { color: green; }
+      }
+
+      @mixin --m2(@contents) {
+        @contents
+      }
+      #e2 {
+        color: red;
+        @apply --m1 { color: green; }
+      }
+
+      @mixin --m3(@contents) {
+        &.a {
+          @contents { color: blue; }
+        }
+      }
+      .b {
+        color: red;
+        @apply --m3 { color: green; }
+      }
+
+      @mixin --m4(@contents) {
+        &.c {
+          @contents { color: green; }
+        }
+      }
+      .d {
+        color: red;
+        @apply --m4;
+      }
+
+      @mixin --m5 {
+        @contents { color: red !important; }
+        color: green;
+      }
+      #e4 {
+        @apply --m5 { color: red !important; }
+      }
+    </style>
+  </head>
+  <body>
+    <div id="e1">This text should be green.</div>
+    <div id="e2">This text should be green.</div>
+    <div class="a b" id="e3">This text should be green.</div>
+    <div class="c d" id="e4">This text should be green.</div>
+    <div id="e5">This text should be green.</div>
+  <script>
+    test(() => {
+      let target = document.getElementById('e1');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    }, 'Simple @contents with no fallback');
+
+    test(() => {
+      let target = document.getElementById('e2');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    }, 'Implicit semicolon after @contents, at end of block');
+
+    test(() => {
+      let target = document.getElementById('e3');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    }, 'Block in @apply overrides fallback');
+
+    test(() => {
+      let target = document.getElementById('e4');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    }, 'Fallback is used if @apply has no block');
+
+    test(() => {
+      let target = document.getElementById('e5');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    }, '@contents is ignored if there is no @contents parameter');
+  </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-mixins/cross-stylesheet.html b/tests/wpt/tests/css/css-mixins/cross-stylesheet.html
new file mode 100644
index 00000000000..0c8d9be7fcf
--- /dev/null
+++ b/tests/wpt/tests/css/css-mixins/cross-stylesheet.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Mixins: Mixin from another stylesheet</title>
+    <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#using-mixins">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style>
+      div {
+        color: red;
+        @apply --m1;
+      }
+    </style>
+    <style>
+      @mixin --m1() {
+        color: green;
+      }
+    </style>
+  </head>
+  <body>
+    <div><div class="cls" id="target">This text should be green.</div></div>
+  <script>
+    test(() => {
+      let target = document.getElementById('target');
+      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+    });
+  </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-mixins/shadow-dom.html b/tests/wpt/tests/css/css-mixins/shadow-dom.html
new file mode 100644
index 00000000000..f3f62ba2025
--- /dev/null
+++ b/tests/wpt/tests/css/css-mixins/shadow-dom.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSS Mixins: Shadow DOM</title>
+    <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#defining-mixins">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style>
+      @mixin --exists-only-outside-shadow() {
+        color: green;
+      }
+      #e4 {
+        color: green;
+        @apply --in-shadow;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="host">
+      <template shadowrootmode="open">
+        <style>
+          #e1 {
+            color: red;
+            @apply --exists-only-outside-shadow;
+          }
+          #e2 {
+            color: red;
+            @apply --m1;
+          }
+          #e3 {
+            color: red;
+            @apply --exists-only-in-adopted;
+          }
+        </style>
+        <style>
+          @mixin --m1() {
+            color: green;
+          }
+          @mixin --in-shadow() {
+            color: red;
+          }
+        </style>
+        <div id="e1">This text should be green.</div>
+        <div id="e2">This text should be green.</div>
+        <div id="e3">This text should be green.</div>
+      </template>
+    </div>
+    <div id="e4">This text should be green.</div>
+    <script>
+      const sheet = new CSSStyleSheet();
+      sheet.replaceSync('@mixin --exists-only-in-adopted() { color: green; }');
+      document.getElementById('host').shadowRoot.adoptedStyleSheets = [sheet];
+
+      test(() => {
+        let target = document.getElementById('host').shadowRoot.getElementById('e1');
+        assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+      }, 'Style in shadow DOM should have access to outside non-adopted mixins');
+
+      test(() => {
+        let target = document.getElementById('host').shadowRoot.getElementById('e2');
+        assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+      }, 'Style in shadow DOM should have access to inside mixins');
+
+      test(() => {
+        let target = document.getElementById('host').shadowRoot.getElementById('e3');
+        assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+      }, 'Style in shadow DOM should have access to mixins from adopted stylesheets');
+
+      test(() => {
+        let target = document.getElementById('e4');
+        assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
+      }, 'Style outside shadow DOM should _not_ have access to inside mixins');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-multicol/crashtests/spanner-in-relpos-in-abspos-multicol-in-multicol.html b/tests/wpt/tests/css/css-multicol/crashtests/spanner-in-relpos-in-abspos-multicol-in-multicol.html
new file mode 100644
index 00000000000..35ad2569ea7
--- /dev/null
+++ b/tests/wpt/tests/css/css-multicol/crashtests/spanner-in-relpos-in-abspos-multicol-in-multicol.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Spanner in replos in abspos multicol, inside another container that's also multicol but then ceases to be one</title>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://issues.chromium.org/issues/436110579">
+<div id="troublemaker" style="columns:7;">
+  <div style="position:absolute; columns:2;">
+    <div style="position:relative;">
+      <div style="column-span:all;"></div>
+    </div>
+  </div>
+</div>
+<script>
+  document.body.offsetTop;
+  troublemaker.style.columns = "auto";
+</script>
diff --git a/tests/wpt/tests/css/css-overflow/scroll-button-disposed-event-target.html b/tests/wpt/tests/css/css-overflow/scroll-button-disposed-event-target.html
new file mode 100644
index 00000000000..128f1ffd40d
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scroll-button-disposed-event-target.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: event.target for detached ::scroll-button is scroller</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons">
+<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>
+<style>
+  body {
+    margin: 0;
+  }
+
+  #scroller {
+    position: absolute;
+    top: 100px;
+    width: 600px;
+    height: 300px;
+    overflow: auto;
+    white-space: nowrap;
+  }
+
+  #scroller div {
+    display: inline-block;
+    width: 600px;
+    height: 200px;
+  }
+
+  .sbtn::scroll-button(inline-end) {
+    position: absolute;
+    top: 0;
+    left: 0;
+    content: "";
+    width: 100px;
+    height: 20px;
+  }
+</style>
+<div id="scroller" class="sbtn">
+  <div></div>
+  <div></div>
+</div>
+<script>
+  let event = null;
+
+  scroller.addEventListener('click', (e) => {
+    event = e;
+  });
+
+  promise_test(async t => {
+    // Click on ::scroll-button
+    const scrollButtonX = 15;
+    const scrollButtonY = 15;
+    await new test_driver.Actions()
+      .pointerMove(scrollButtonX, scrollButtonY)
+      .pointerDown()
+      .pointerUp()
+      .send();
+    assert_equals(event.target, scroller, "event.target for ::scroll-button click is scroller");
+    scroller.classList.remove("sbtn");
+    assert_equals(event.target, scroller, "event.target for detached ::scroll-button click is scroller");
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/scroll-button-event-target.html b/tests/wpt/tests/css/css-overflow/scroll-button-event-target.html
new file mode 100644
index 00000000000..cae3108712f
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scroll-button-event-target.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: event.target and event.currentTarget for ::scroll-button is scroller</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-buttons">
+<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>
+<style>
+  body {
+    margin: 0;
+  }
+
+  #scroller {
+    position: absolute;
+    top: 100px;
+    width: 600px;
+    height: 300px;
+    overflow: auto;
+    white-space: nowrap;
+  }
+
+  #scroller div {
+    display: inline-block;
+    width: 600px;
+    height: 200px;
+  }
+
+  #scroller::scroll-button(inline-end) {
+    position: absolute;
+    top: 0;
+    left: 0;
+    content: "";
+    width: 100px;
+    height: 20px;
+  }
+</style>
+<div id="scroller">
+  <div></div>
+  <div></div>
+</div>
+<script>
+  let target = null;
+  let currentTarget = null;
+
+  scroller.addEventListener('click', (e) => {
+    target = e.target;
+    currentTarget = e.currentTarget;
+    e.stopPropagation();
+  });
+
+  promise_test(async t => {
+    // Click on ::scroll-button
+    const scrollButtonX = 15;
+    const scrollButtonY = 15;
+    await new test_driver.Actions()
+      .pointerMove(scrollButtonX, scrollButtonY)
+      .pointerDown()
+      .pointerUp()
+      .send();
+    assert_equals(currentTarget, scroller, "event.currentTarget for ::scroll-button click is scroller");
+    assert_equals(target, scroller, "event.target for ::scroll-button click is scroller");
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/scroll-marker-disposed-event-target.html b/tests/wpt/tests/css/css-overflow/scroll-marker-disposed-event-target.html
new file mode 100644
index 00000000000..322cdc2bdcc
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scroll-marker-disposed-event-target.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: event.target for detached ::scroll-marker is its originating element</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker">
+<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>
+<style>
+  body {
+    margin: 0;
+  }
+
+  #scroller {
+    position: absolute;
+    top: 100px;
+    width: 600px;
+    height: 300px;
+    overflow: auto;
+    scroll-marker-group: before;
+    white-space: nowrap;
+  }
+
+  #scroller div {
+    display: inline-block;
+    width: 600px;
+    height: 270px;
+  }
+
+  #scroller::scroll-marker-group {
+    position: absolute;
+    top: 0;
+    display: flex;
+    height: 20px;
+    width: 40px;
+  }
+
+  .sm::scroll-marker {
+    content: "";
+    width: 100px;
+    height: 20px;
+    display: inline-block;
+  }
+</style>
+<div id="scroller">
+  <div id="originatingElement" class="sm"></div>
+  <div></div>
+</div>
+<script>
+  let event = null;
+
+  originatingElement.addEventListener('click', (e) => {
+    event = e;
+  });
+
+  promise_test(async t => {
+    // Click on ::scroll-marker
+    const scrollMarkerX = 15;
+    const scrollMarkerY = 15;
+    await new test_driver.Actions()
+      .pointerMove(scrollMarkerX, scrollMarkerY)
+      .pointerDown()
+      .pointerUp()
+      .send();
+    assert_equals(event.target, originatingElement, "event.target for ::scroll-marker click is its originating element");
+    originatingElement.classList.remove("sm");
+    assert_equals(event.target, originatingElement, "event.target for detached ::scroll-marker click is its originating element");
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overflow/scroll-marker-event-target.html b/tests/wpt/tests/css/css-overflow/scroll-marker-event-target.html
new file mode 100644
index 00000000000..836bd5f4684
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scroll-marker-event-target.html
@@ -0,0 +1,71 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: event.target and event.currentTarget for ::scroll-marker is its originating element</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker">
+<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>
+<style>
+  body {
+    margin: 0;
+  }
+
+  #scroller {
+    position: absolute;
+    top: 100px;
+    width: 600px;
+    height: 300px;
+    overflow: auto;
+    scroll-marker-group: before;
+    white-space: nowrap;
+  }
+
+  #scroller div {
+    display: inline-block;
+    width: 600px;
+    height: 270px;
+  }
+
+  #scroller::scroll-marker-group {
+    position: absolute;
+    top: 0;
+    display: flex;
+    height: 20px;
+    width: 40px;
+  }
+
+  #scroller div::scroll-marker {
+    content: "";
+    width: 100px;
+    height: 20px;
+    display: inline-block;
+  }
+</style>
+<div id="scroller">
+  <div id="originatingElement"></div>
+  <div></div>
+</div>
+<script>
+  let target = null;
+  let currentTarget = null;
+
+  originatingElement.addEventListener('click', (e) => {
+    target = e.target;
+    currentTarget = e.currentTarget;
+  });
+
+  promise_test(async t => {
+    // Click on ::scroll-marker
+    const scrollMarkerX = 15;
+    const scrollMarkerY = 15;
+    await new test_driver.Actions()
+      .pointerMove(scrollMarkerX, scrollMarkerY)
+      .pointerDown()
+      .pointerUp()
+      .send();
+    assert_equals(currentTarget, originatingElement, "event.currentTarget for ::scroll-marker click is its originating element");
+    assert_equals(target, originatingElement, "event.target for ::scroll-marker click is its originating element");
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-overscroll-behavior/overscroll-behavior.html b/tests/wpt/tests/css/css-overscroll-behavior/overscroll-behavior.html
index dcd981e92e2..0fa9296f8bc 100644
--- a/tests/wpt/tests/css/css-overscroll-behavior/overscroll-behavior.html
+++ b/tests/wpt/tests/css/css-overscroll-behavior/overscroll-behavior.html
@@ -4,6 +4,7 @@
 <script src="/resources/testdriver.js"></script>
 <script src="/resources/testdriver-actions.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
+<script src="/dom/events/scrolling/scroll_support.js"></script>
 <script src="/css/css-scroll-snap/support/common.js"></script>
 <link rel="help" href="https://drafts.csswg.org/css-overscroll-behavior">
 
@@ -27,7 +28,7 @@
   overflow: scroll;
 }
 #non_scrollable {
-  overflow: none;
+  overflow: clip;
 }
 #green {
   background: repeating-linear-gradient(to bottom right, green 15%, white 30%);
@@ -45,154 +46,121 @@
     <div id='blue' class='content'></div>
   </div>
 </div>
-<input type="button" id="btnDone" value="DONE" style="width: 100px; height: 50px;"/>
-<h1>overscroll-behavior</h1>
-<h4>Tests that overscroll-behavior prevents scroll-propagation in the area and direction as specified.</h4>
-<ol>
-  <li id="i1">Make two scrolls on <span style="color: blue">BLUE</span>, in this order: scroll UP (or drag down), then scroll LEFT (or drag right). Scroll (or drag) until nothing is scrolling. Then tap on DONE.</li>
-  <li id="i2">Repeat the same scrolls as in step 1 and then tap on DONE.</li>
-  <li id="i3">Repeat the same scrolls as in step 1 and then tap on DONE.</li>
-  <li id="i4">Make two separate scrolls on <span style="color: green">GREEN</span>, in this order: scroll UP (or drag down), then scroll LEFT (or drag right). Scroll (or drag) until nothing is scrolling. Then tap on DONE.</li>
-</ol>
-
-
+<!--
+Tests that overscroll-behavior prevents scroll-propagation in the area and
+direction as specified.
+  Manual Steps:
+    1. Make two scrolls on blue, in this order: scroll UP (or drag down), then
+       scroll LEFT (or drag right). Scroll (or drag) until nothing is
+       scrolling.
+    2. Call verify_y_prevented_and_set_boundary_prevents_x() from console
+    3. Repeat the same scrolls as in step 1
+    4. Call verify_x_prevented_and_set_boundary_allows_inner() from console
+    5. Repeat the same scrolls as in step 1
+    6. Call verify_inner_allowed_and_set_nonscrollable_allows_propagation()
+       from console
+    7. Make two separate scrolls on green, in this order: scroll UP
+       (or drag down), then scroll LEFT (or drag right). Scroll (or drag) until
+       nothing is scrolling.
+    8. Call verify_non_scrollable_allows_propagation() from console
+</ol> -->
 <script>
-setup({explicit_timeout: true});
 const container = document.getElementById('container');
 const non_scrollable = document.getElementById('non_scrollable');
 const root = document.getElementById('root');
-const btnDone = document.getElementById('btnDone');
-var test = async_test("overscroll-behavior prevents scroll-propagation in the area and direction as specified");
-var instruction1 = document.getElementById("i1");
-var instruction2 = document.getElementById("i2");
-var instruction3 = document.getElementById("i3");
-var instruction4 = document.getElementById("i4");
-var actions_promise;
 
-scrollTop = () => container.scrollTop;
-scrollLeft = () => container.scrollLeft;
-
-function smoothScrollByXY(xPosition, yPosition, xScrollOffset, yScrollOffset) {
-  return new test_driver.Actions()
-      .scroll(xPosition, yPosition, xScrollOffset, yScrollOffset)
-      .send();
+function setScrollPosition(scroller, offset) {
+  scroller.scrollTop = offset;
+  scroller.scrollLeft = offset;
 }
 
-function setUpForRoot(offset) {
-  root.scrollTop = offset;
-  root.scrollLeft = offset;
+async function scrollWithWheelWait(scroll_element, overflow_scroller) {
+  const scrollerRect = scroll_element.getBoundingClientRect();
+  const x = scrollerRect.left + 200;
+  const y = scrollerRect.top + 100;
+  const dx = -200;
+  const dy = -200;
+
+  const wheelPromiseY = waitForWheelEvent(window);
+  await new test_driver.Actions().scroll(x, y, 0, dy).send();
+  await wheelPromiseY;
+  await waitForAnimationEnd(() => overflow_scroller.scrollTop);
+
+  const wheelPromiseX = waitForWheelEvent(window);
+  await new test_driver.Actions().scroll(x, y, dx, 0).send();
+  await wheelPromiseX;
+  await waitForAnimationEnd(() => overflow_scroller.scrollLeft);
 }
 
-function setUpForContainer(offset) {
-  container.scrollTop = offset;
-  container.scrollLeft = offset
-}
+promise_test(async t => {
+  await waitForCompositorReady();
 
-function set_boundary_prevents_y() {
-  instruction1.style.color = 'red';
-  instruction1.style.fontWeight = 'bold';
   container.style.overscrollBehaviorX = 'auto';
   container.style.overscrollBehaviorY = 'none';
-  setUpForRoot(100);
-  setUpForContainer(0);
+  setScrollPosition(root, 100);
+  setScrollPosition(container, 0);
   window.scrollTo(0, 0);
-}
 
-function verify_y_prevented_and_set_boundary_prevents_x() {
-  instruction1.style.fontWeight = 'normal';
-  instruction2.style.fontWeight = 'bold';
-  test.step(function() {
-    assert_equals(root.scrollTop, 100, "overscroll-behavior-y: none should prevent scroll propagation on y axis.");
-    assert_equals(root.scrollLeft, 0, "overscroll-behavior-y: none should only prevent scroll propagation on y axis.");
-    window.scrollTo(0, 0);
-  });
+  await scrollWithWheelWait(container, root);
+
+  assert_approx_equals(root.scrollTop, 100, 0.5,
+                      "root got unexpected scroll on Y axis");
+  assert_approx_equals(root.scrollLeft, 0, 0.5,
+                      "root expected to scroll on X axis");
+}, "overscroll-behavior-y: none prevents scroll propagation on y axis");
+
+promise_test(async t => {
+  await waitForCompositorReady();
 
   container.style.overscrollBehaviorX = 'none';
   container.style.overscrollBehaviorY = 'auto';
-  setUpForRoot(100);
-  setUpForContainer(0);
+  setScrollPosition(root, 100);
+  setScrollPosition(container, 0);
   window.scrollTo(0, 0);
-}
 
-function verify_x_prevented_and_set_boundary_allows_inner() {
-  instruction2.style.fontWeight = 'normal';
-  instruction3.style.fontWeight = 'bold';
-  test.step(function() {
-    assert_equals(root.scrollTop, 0, "overscroll-behavior-x: none should only prevent scroll propagation on x axis.");
-    assert_equals(root.scrollLeft, 100, "overscroll-behavior-x: none should prevent scroll propagation on x axis." );
-  });
+  await scrollWithWheelWait(container, root);
+
+  assert_approx_equals(root.scrollTop, 0, 0.5,
+                      "root expected to scroll on Y axis");
+  assert_approx_equals(root.scrollLeft, 100, 0.5,
+                      "root got unexpected scroll on X axis");
+}, "overscroll-behavior-x: none prevents scroll propagation on x axis");
+
+promise_test(async t => {
+  await waitForCompositorReady();
 
   container.style.overscrollBehaviorX = 'none';
   container.style.overscrollBehaviorY = 'none';
-  setUpForRoot(100);
-  setUpForContainer(100);
+  setScrollPosition(root, 100);
+  setScrollPosition(container, 100);
   window.scrollTo(0, 0);
-}
 
-function verify_inner_allowed_and_set_nonscrollable_allows_propagation() {
-  instruction1.style.color = 'black';
-  instruction4.style.color = 'red';
-  instruction3.style.fontWeight = 'normal';
-  instruction4.style.fontWeight = 'bold';
-  test.step(function() {
-    assert_equals(container.scrollTop, 0, "overscroll-behavior should latch the scroll to the inner container.");
-    assert_equals(container.scrollLeft, 0, "overscroll-behavior should latch the scroll to the inner container.");
-    assert_equals(root.scrollTop, 100, "overscroll-behavior should latch the scroll to the inner container.");
-    assert_equals(root.scrollLeft, 100, "overscroll-behavior should latch the scroll to the inner container.");
-  });
+  await scrollWithWheelWait(container, container);
+
+  assert_approx_equals(container.scrollTop, 0, 0.5,
+                      "inner container expected to scroll on Y axis");
+  assert_approx_equals(container.scrollLeft, 0, 0.5,
+                      "inner container expected to scroll on X axis");
+  assert_approx_equals(root.scrollTop, 100, 0.5,
+                      "root got unexpected scroll on Y axis");
+  assert_approx_equals(root.scrollLeft, 100, 0.5,
+                      "root got unexpected scroll on X axis");
+}, "overscroll-behavior allows inner scrolling when both axes are none");
+
+promise_test(async t => {
+  await waitForCompositorReady();
 
   non_scrollable.style.overscrollBehaviorX = 'none';
   non_scrollable.style.overscrollBehaviorY = 'none';
-  setUpForRoot(100);
+  setScrollPosition(root, 100);
   window.scrollTo(0, 0);
-}
 
-function verify_non_scrollable_allows_propagation() {
-  test.step(function() {
-    assert_equals(root.scrollLeft, 0, "overscroll-behavior on non-scrollable area should not affect scroll propagation.");
-    assert_equals(root.scrollTop, 0, "overscroll-behavior on non-scrollable area should not affect scroll propagation.");
-  });
-  actions_promise.then( () => {
-    test.done();
-  });
-}
+  await scrollWithWheelWait(non_scrollable, root);
 
-var verifyAndSetupForNext = [
-    set_boundary_prevents_y,
-    verify_y_prevented_and_set_boundary_prevents_x,
-    verify_x_prevented_and_set_boundary_allows_inner,
-    verify_inner_allowed_and_set_nonscrollable_allows_propagation,
-    verify_non_scrollable_allows_propagation];
-
-on_event(btnDone, "click", function() {
-  if (current_test < verifyAndSetupForNext.length)
-    verifyAndSetupForNext[current_test++]();
-});
-
-var current_test = 0;
-verifyAndSetupForNext[current_test++]();
-
-// Inject scroll actions.
-const test_cases = [
-  { x: 200, y: 500, dx: -200, dy: -200 },
-  { x: 200, y: 500, dx: -200, dy: -200 },
-  { x: 200, y: 500, dx: -200, dy: -200 },
-  { x: 200, y: 100, dx: -200, dy: -200 },
-];
-
-actions_promise = new Promise( (resolve) => {resolve();} );
-for (let action of test_cases) {
-  actions_promise = actions_promise.then(() => {
-    return smoothScrollByXY(action.x, action.y, 0, action.dy);
-  }).then(() => {
-    return waitForAnimationEnd(scrollTop);
-  }).then(() => {
-    return smoothScrollByXY(action.x, action.y, action.dx, 0);
-  }).then(() => {
-    return waitForAnimationEnd(scrollLeft);
-  }).then(() => {
-    return test_driver.click(btnDone);
-  });
-}
+  assert_approx_equals(root.scrollLeft, 0, 0.5,
+                      "root expected to scroll on X axis");
+  assert_approx_equals(root.scrollTop, 0, 0.5,
+                      "root expected to scroll on Y axis");
+}, "overscroll-behavior on non-scrollable area allows scroll propagation");
 
 </script>
diff --git a/tests/wpt/tests/css/css-position/replaced-object-backdrop.html b/tests/wpt/tests/css/css-position/replaced-object-backdrop.html
new file mode 100644
index 00000000000..b9d2cb599bd
--- /dev/null
+++ b/tests/wpt/tests/css/css-position/replaced-object-backdrop.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<title>CSS Position Test: Replaced &lt;object&gt; renders ::backdrop in top layer</title>
+<link rel="help" href="https://drafts.csswg.org/css-position-4/#backdrop">
+<link rel="match" href="/css/reference/green.html">
+<style>
+  object.green::backdrop { background-color: green; visibility: visible; }
+  object { visibility: hidden; }
+</style>
+<object id="pop" popover="auto"></object>
+<script>
+  pop.showPopover();
+  pop.className = "green";
+</script>
diff --git a/tests/wpt/tests/css/css-scroll-snap/snap-after-relayout/resnap-on-reconstructing-frame.html b/tests/wpt/tests/css/css-scroll-snap/snap-after-relayout/resnap-on-reconstructing-frame.html
index d046608815a..8435d8065b1 100644
--- a/tests/wpt/tests/css/css-scroll-snap/snap-after-relayout/resnap-on-reconstructing-frame.html
+++ b/tests/wpt/tests/css/css-scroll-snap/snap-after-relayout/resnap-on-reconstructing-frame.html
@@ -36,6 +36,11 @@ video {
 </div>
 <script>
 promise_test(async () => {
+  // Ensure this document has been already loaded.
+  if (document.readyState != "complete") {
+    await new Promise(resolve => window.addEventListener("load", resolve));
+  }
+
   assert_equals(scroller.scrollTop, 0);
 
   const scrollendPromise = new Promise(resolve => {
diff --git a/tests/wpt/tests/css/css-text/META.yml b/tests/wpt/tests/css/css-text/META.yml
index e7914c0fc7f..e2462aea1a1 100644
--- a/tests/wpt/tests/css/css-text/META.yml
+++ b/tests/wpt/tests/css/css-text/META.yml
@@ -3,6 +3,6 @@ suggested_reviewers:
   - kojiishi
   - plinss
   - frivoal
-  - r12a
+  - xfq
   - nox
   - fantasai
diff --git a/tests/wpt/tests/css/css-text/i18n/META.yml b/tests/wpt/tests/css/css-text/i18n/META.yml
index 9fa8c3b6c9b..ad1e4bf0913 100644
--- a/tests/wpt/tests/css/css-text/i18n/META.yml
+++ b/tests/wpt/tests/css/css-text/i18n/META.yml
@@ -1,2 +1,2 @@
 suggested_reviewers:
-  - r12a
+  - xfq
diff --git a/tests/wpt/tests/css/css-text/parsing/text-autospace-computed.html b/tests/wpt/tests/css/css-text/parsing/text-autospace-computed.html
index c8a4091eb99..05a7acb73ba 100644
--- a/tests/wpt/tests/css/css-text/parsing/text-autospace-computed.html
+++ b/tests/wpt/tests/css/css-text/parsing/text-autospace-computed.html
@@ -15,11 +15,46 @@ test_computed_value("text-autospace", "initial", "normal");
 
 test_computed_value("text-autospace", "normal");
 test_computed_value("text-autospace", "no-autospace");
+
 test_computed_value("text-autospace", "auto");
 
 test_computed_value("text-autospace", "ideograph-alpha");
 test_computed_value("text-autospace", "ideograph-numeric");
+test_computed_value("text-autospace", "ideograph-alpha ideograph-numeric");
 
+test_computed_value("text-autospace", "punctuation");
+test_computed_value("text-autospace", "punctuation ideograph-alpha", "ideograph-alpha punctuation");
+test_computed_value("text-autospace", "punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation");
+
+test_computed_value("text-autospace", "ideograph-alpha insert");
+test_computed_value("text-autospace", "ideograph-numeric insert");
+test_computed_value("text-autospace", "ideograph-alpha ideograph-numeric insert");
+
+test_computed_value("text-autospace", "punctuation insert");
+test_computed_value("text-autospace", "punctuation ideograph-alpha insert", "ideograph-alpha punctuation insert");
+
+test_computed_value("text-autospace", "insert ideograph-alpha", "ideograph-alpha insert");
+test_computed_value("text-autospace", "insert ideograph-numeric", "ideograph-numeric insert");
+test_computed_value("text-autospace", "insert ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric insert");
+
+test_computed_value("text-autospace", "insert punctuation", "punctuation insert");
+test_computed_value("text-autospace", "insert punctuation ideograph-alpha", "ideograph-alpha punctuation insert");
+test_computed_value("text-autospace", "insert punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation insert");
+
+test_computed_value("text-autospace", "ideograph-alpha replace");
+test_computed_value("text-autospace", "ideograph-numeric replace");
+test_computed_value("text-autospace", "ideograph-alpha ideograph-numeric replace");
+
+test_computed_value("text-autospace", "punctuation replace");
+test_computed_value("text-autospace", "punctuation ideograph-alpha replace", "ideograph-alpha punctuation replace");
+
+test_computed_value("text-autospace", "replace ideograph-alpha", "ideograph-alpha replace");
+test_computed_value("text-autospace", "replace ideograph-numeric", "ideograph-numeric replace");
+test_computed_value("text-autospace", "replace ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric replace");
+
+test_computed_value("text-autospace", "replace punctuation", "punctuation replace");
+test_computed_value("text-autospace", "replace punctuation ideograph-alpha", "ideograph-alpha punctuation replace");
+test_computed_value("text-autospace", "replace punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation replace");
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-text/parsing/text-autospace-invalid.html b/tests/wpt/tests/css/css-text/parsing/text-autospace-invalid.html
index 7be73ba76ee..93de3abad75 100644
--- a/tests/wpt/tests/css/css-text/parsing/text-autospace-invalid.html
+++ b/tests/wpt/tests/css/css-text/parsing/text-autospace-invalid.html
@@ -10,6 +10,12 @@
 </head>
 <body>
 <script>
+test_invalid_value("text-autospace", "punctuation normal");
+test_invalid_value("text-autospace", "punctuation normal insert");
+test_invalid_value("text-autospace", "insert punctuation normal");
+test_invalid_value("text-autospace", "punctuation normal replace");
+test_invalid_value("text-autospace", "replace punctuation normal");
+
 test_invalid_value("text-autospace", "normal ideograph-alpha");
 test_invalid_value("text-autospace", "normal ideograph-alpha ideograph-numeric");
 test_invalid_value("text-autospace", "normal punctuation");
diff --git a/tests/wpt/tests/css/css-text/parsing/text-autospace-valid.html b/tests/wpt/tests/css/css-text/parsing/text-autospace-valid.html
index 903da683074..f49fe778586 100644
--- a/tests/wpt/tests/css/css-text/parsing/text-autospace-valid.html
+++ b/tests/wpt/tests/css/css-text/parsing/text-autospace-valid.html
@@ -20,43 +20,38 @@ test_valid_value("text-autospace", "ideograph-numeric");
 test_valid_value("text-autospace", "ideograph-alpha ideograph-numeric");
 
 test_valid_value("text-autospace", "punctuation");
-test_valid_value("text-autospace", "punctuation normal");
-test_valid_value("text-autospace", "punctuation ideograph-alpha");
-test_valid_value("text-autospace", "punctuation ideograph-alpha ideograph-numeric");
+test_valid_value("text-autospace", "punctuation ideograph-alpha", "ideograph-alpha punctuation");
+test_valid_value("text-autospace", "punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation");
 
 test_valid_value("text-autospace", "ideograph-alpha insert");
 test_valid_value("text-autospace", "ideograph-numeric insert");
 test_valid_value("text-autospace", "ideograph-alpha ideograph-numeric insert");
 
 test_valid_value("text-autospace", "punctuation insert");
-test_valid_value("text-autospace", "punctuation normal insert");
-test_valid_value("text-autospace", "punctuation ideograph-alpha insert");
+test_valid_value("text-autospace", "punctuation ideograph-alpha insert", "ideograph-alpha punctuation insert");
 
-test_valid_value("text-autospace", "insert ideograph-alpha");
-test_valid_value("text-autospace", "insert ideograph-numeric");
-test_valid_value("text-autospace", "insert ideograph-alpha ideograph-numeric");
+test_valid_value("text-autospace", "insert ideograph-alpha", "ideograph-alpha insert");
+test_valid_value("text-autospace", "insert ideograph-numeric", "ideograph-numeric insert");
+test_valid_value("text-autospace", "insert ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric insert");
 
-test_valid_value("text-autospace", "insert punctuation");
-test_valid_value("text-autospace", "insert punctuation normal");
-test_valid_value("text-autospace", "insert punctuation ideograph-alpha");
-test_valid_value("text-autospace", "insert punctuation ideograph-alpha ideograph-numeric");
+test_valid_value("text-autospace", "insert punctuation", "punctuation insert");
+test_valid_value("text-autospace", "insert punctuation ideograph-alpha", "ideograph-alpha punctuation insert");
+test_valid_value("text-autospace", "insert punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation insert");
 
 test_valid_value("text-autospace", "ideograph-alpha replace");
 test_valid_value("text-autospace", "ideograph-numeric replace");
 test_valid_value("text-autospace", "ideograph-alpha ideograph-numeric replace");
 
 test_valid_value("text-autospace", "punctuation replace");
-test_valid_value("text-autospace", "punctuation normal replace");
-test_valid_value("text-autospace", "punctuation ideograph-alpha replace");
+test_valid_value("text-autospace", "punctuation ideograph-alpha replace", "ideograph-alpha punctuation replace");
 
-test_valid_value("text-autospace", "replace ideograph-alpha");
-test_valid_value("text-autospace", "replace ideograph-numeric");
-test_valid_value("text-autospace", "replace ideograph-alpha ideograph-numeric");
+test_valid_value("text-autospace", "replace ideograph-alpha", "ideograph-alpha replace");
+test_valid_value("text-autospace", "replace ideograph-numeric", "ideograph-numeric replace");
+test_valid_value("text-autospace", "replace ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric replace");
 
-test_valid_value("text-autospace", "replace punctuation");
-test_valid_value("text-autospace", "replace punctuation normal");
-test_valid_value("text-autospace", "replace punctuation ideograph-alpha");
-test_valid_value("text-autospace", "replace punctuation ideograph-alpha ideograph-numeric");
+test_valid_value("text-autospace", "replace punctuation", "punctuation replace");
+test_valid_value("text-autospace", "replace punctuation ideograph-alpha", "ideograph-alpha punctuation replace");
+test_valid_value("text-autospace", "replace punctuation ideograph-alpha ideograph-numeric", "ideograph-alpha ideograph-numeric punctuation replace");
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-text/tab-size/tab-size-spacing-003.html b/tests/wpt/tests/css/css-text/tab-size/tab-size-spacing-003.html
index 767cc592445..998401169d3 100644
--- a/tests/wpt/tests/css/css-text/tab-size/tab-size-spacing-003.html
+++ b/tests/wpt/tests/css/css-text/tab-size/tab-size-spacing-003.html
@@ -12,11 +12,11 @@ div {
   white-space: pre;
 }
 .test {
-  word-spacing: 100%; /* effectively double the size of SPACE, and hence of tabs */
+  word-spacing: 1ch; /* effectively double the size of SPACE, and hence of tabs */
   tab-size: 3;
 }
 .ref1 {
-  word-spacing: 100%;
+  word-spacing: 1ch;
 }
 .ref2 {
   white-space: pre;
diff --git a/tests/wpt/tests/css/css-transitions/starting-style-first-letter-crash.html b/tests/wpt/tests/css/css-transitions/starting-style-first-letter-crash.html
new file mode 100644
index 00000000000..b0193d06353
--- /dev/null
+++ b/tests/wpt/tests/css/css-transitions/starting-style-first-letter-crash.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://issues.chromium.org/issues/435225409">
+
+<style>
+@starting-style {
+  div::first-letter {
+    color: red;
+  }
+}
+</style>
+
+<div>hello world</div>
diff --git a/tests/wpt/tests/css/css-view-transitions/idlharness.html b/tests/wpt/tests/css/css-view-transitions/idlharness.html
new file mode 100644
index 00000000000..97380b73882
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/idlharness.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>css-view-transitions IDL tests</title>
+<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/#idl-index">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=/resources/WebIDLParser.js></script>
+<script src=/resources/idlharness.js></script>
+
+<style id="styleElement">
+@view-transition {
+  navigation: auto;
+}
+</style>
+
+<script>
+'use strict';
+
+idl_test(
+  ['css-view-transitions', 'css-view-transitions-2'],
+  ['dom', 'html', 'cssom'],
+  idl_array => {
+    idl_array.add_objects({
+      ViewTransition: ['document.startViewTransition()'],
+      Document: ['document'],
+      CSSViewTransitionRule: ['sheet.cssRules[0]'],
+    });
+    self.style_element = document.getElementById('styleElement');
+    self.sheet = style_element.sheet;
+  }
+);
+</script>
diff --git a/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/display-inline.html b/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/display-inline.html
new file mode 100644
index 00000000000..023aeff3b0b
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/display-inline.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html class="test-wait">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Scoped VT on display:inline element</title>
+</head>
+<style>
+  #scope {
+    view-transition-name: scope;
+  }
+</style>
+<body>
+  <p><span id="scope">Hello</span> world</p>
+</body>
+<script>
+  async function testDisplayProperty(type) {
+    scope.style = `display: ${type}`;
+    const vt = scope.startViewTransition();
+    await vt.finished;
+  }
+
+  async function runTests() {
+    const tests = [
+      // Inline display types:
+      'inline',
+      'inline-flex',
+      'inline flow',
+      'math',
+      'ruby',
+      // No box, and children are inline:
+      'ruby-text',
+      'content'
+    ];
+    tests.forEach(async display => {
+      await testDisplayProperty(display);
+    });
+    document.documentElement.classList.remove('test-wait');
+  }
+
+  window.onload = runTests;
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/mask-image.html b/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/mask-image.html
new file mode 100644
index 00000000000..88bafebb38c
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/scoped/crashtests/mask-image.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html class="test-wait">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Scoped VT with mask-image</title>
+</head>
+<style>
+  .block {
+    background-color: red;
+    contain: strict;
+    position: relative;
+    z-index: 0;
+    width: 150px;
+    height: 100px;
+    border: 5px solid black;
+  }
+  .scope1 {
+    view-transition-name: scope1;
+  }
+  .scope2 {
+    view-transition-name:  scope2;
+  }
+  .mask {
+    mask-image: linear-gradient(rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
+  }
+</style>
+<body>
+  <div id="target1" class="block scope1 mask"></div>
+  <div id="target2" class="block scope2"></div>
+</body>
+<script>
+  async function runTest() {
+    const vt1 = target1.startViewTransition(() => {
+      target1.classList.remove('mask');
+    });
+    const vt2 = target2.startViewTransition(() => {
+      target2.classList.add('mask');
+    });
+    await Promise.all([vt1.finished, vt2.finished]);
+    document.documentElement.classList.remove('test-wait');
+  }
+
+  window.onload = runTest();
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-view-transitions/scoped/display-inline-block.html b/tests/wpt/tests/css/css-view-transitions/scoped/display-inline-block.html
new file mode 100644
index 00000000000..58a34a0a38f
--- /dev/null
+++ b/tests/wpt/tests/css/css-view-transitions/scoped/display-inline-block.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <!-- TODO update link -->
+  <link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Scoped view transition with inline block</title>
+</head>
+<style>
+  #target {
+    display: inline-block;
+    view-transition-name: target;
+  }
+
+  ::view-transition-group(target),
+  ::view-transition-old(target) {
+    animation: unset;
+  }
+
+  @keyframes colorize {
+    to { opacity: 0.5; }
+  }
+
+  ::view-transition-new(target) {
+   animation: colorize 1s paused steps(1, jump-start);
+  }
+</style>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+  <p><span id="target">Hello</span> World</p>
+</body>
+<script>
+  promise_test(async t => {
+    const vt = target.startViewTransition();
+    await vt.ready;
+    await Promise.all(document.getAnimations().map(a => a.ready));
+    const style =
+        getComputedStyle(target, '::view-transition-new(target)');
+    assert_equals(style.opacity, '0.5', 'Opacity animation is in effect');
+  }, 'Scoped view transition on an inline-block element');
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-writing-modes/META.yml b/tests/wpt/tests/css/css-writing-modes/META.yml
index c11da73b6b4..9f8a23336a8 100644
--- a/tests/wpt/tests/css/css-writing-modes/META.yml
+++ b/tests/wpt/tests/css/css-writing-modes/META.yml
@@ -2,6 +2,6 @@ spec: https://drafts.csswg.org/css-writing-modes/
 suggested_reviewers:
   - kojiishi
   - fantasai
-  - r12a
+  - xfq
   - plinss
   - upsuper
diff --git a/tests/wpt/tests/css/cssom/StyleSheetList-constructable-with-style-recalc.html b/tests/wpt/tests/css/cssom/StyleSheetList-constructable-with-style-recalc.html
new file mode 100644
index 00000000000..ab78a72c1d7
--- /dev/null
+++ b/tests/wpt/tests/css/cssom/StyleSheetList-constructable-with-style-recalc.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSSOM - StyleSheetList does not include adopted style sheets even after style recalc</title>
+    <link rel="help" href="https://crbug.com/437259105">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style id="sheet1">
+      body { width: 50%; }
+    </style>
+  </head>
+  <body>
+    <script>
+      test(() => {
+        const sheet = new CSSStyleSheet();
+        document.adoptedStyleSheets = [sheet];
+
+        document.body.offsetTop;
+
+        var styleSheets = document.styleSheets;
+        assert_equals(styleSheets.length, 1);
+        assert_equals(styleSheets[0], sheet1.sheet);
+      }, 'document.styleSheets does not include adopted style sheets');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/cssom/StyleSheetList-constructable.html b/tests/wpt/tests/css/cssom/StyleSheetList-constructable.html
new file mode 100644
index 00000000000..afdfcf603d9
--- /dev/null
+++ b/tests/wpt/tests/css/cssom/StyleSheetList-constructable.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>CSSOM - StyleSheetList does not include adopted style sheets</title>
+    <link rel="help" href="https://drafts.csswg.org/cssom/#css-style-sheet-collections">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style id="sheet1">
+      body { width: 50%; }
+    </style>
+  </head>
+  <body>
+    <script>
+      test(() => {
+        const sheet = new CSSStyleSheet();
+        document.adoptedStyleSheets = [sheet];
+
+        var styleSheets = document.styleSheets;
+        assert_equals(styleSheets.length, 1);
+        assert_equals(styleSheets[0], sheet1.sheet);
+      }, 'document.styleSheets does not include adopted style sheets');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/cssom/caretPositionFromPoint.html b/tests/wpt/tests/css/cssom/caretPositionFromPoint.html
index a268acac425..ec1e66f195e 100644
--- a/tests/wpt/tests/css/cssom/caretPositionFromPoint.html
+++ b/tests/wpt/tests/css/cssom/caretPositionFromPoint.html
@@ -8,21 +8,29 @@
   #textDiv {
     display: inline-block;
   }
+
+  .user-select-none {
+    -webkit-user-select: none;
+    user-select: none;
+  }
 </style>
-<div id="textDiv">aaa</div>
+<div id="container"></div>
 <script>
   test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv">aaa</div>`);
     assert_throws_js(TypeError, () => { document.caretPositionFromPoint(); });
     assert_throws_js(TypeError, () => { document.caretPositionFromPoint(5); });
     assert_throws_js(TypeError, () => { document.caretPositionFromPoint("foo", 5); });
   }, "document.caretPositionFromPoint() throws when called without the correct parameters");
 
   test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv">aaa</div>`);
     const doc = document.implementation.createHTMLDocument("");
     assert_equals(doc.caretPositionFromPoint(0, 0), null);
   }, "document.caretPositionFromPoint() should return null for a document with no viewport");
 
   test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv">aaa</div>`);
     assert_equals(document.caretPositionFromPoint(-5, 5), null);
     assert_equals(document.caretPositionFromPoint(5, -5), null);
     assert_equals(document.caretPositionFromPoint(document.documentElement.clientWidth * 2, 5), null);
@@ -30,6 +38,7 @@
   }, "document.caretPositionFromPoint() should return null if given coordinates outside of the viewport");
 
   test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv">aaa</div>`);
     const textDiv = document.getElementById("textDiv");
     const rect = textDiv.getBoundingClientRect();
     const characterWidth = rect.width / textDiv.textContent.length;
@@ -45,6 +54,47 @@
   }, "document.caretPositionFromPoint() should return a CaretPosition at the specified location");
 
   test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv" class="user-select-none">aaa</div>`);
+    const textDiv = document.getElementById("textDiv");
+    const rect = textDiv.getBoundingClientRect();
+    const characterWidth = rect.width / textDiv.textContent.length;
+    const characterIndex = 2
+    const x = rect.left + characterWidth * characterIndex;
+    const y = rect.top + rect.height / 2;
+    const caretPosition = document.caretPositionFromPoint(x, y);
+    assert_true(caretPosition instanceof CaretPosition);
+    assert_true(caretPosition.offsetNode instanceof Text);
+    assert_equals(typeof(caretPosition.offset), "number");
+    assert_equals(caretPosition.offsetNode, textDiv.firstChild);
+    assert_equals(caretPosition.offset, characterIndex);
+  }, "document.caretPositionFromPoint() should return a CaretPosition over elements with `user-select: none`");
+
+  test(() => {
+    container.setHTMLUnsafe(`<video controls></video>`);
+    const video = document.querySelector("video");
+    const caretPosition = document.caretPositionFromPoint(video.offsetLeft + video.offsetWidth / 2, video.offsetTop + video.offsetHeight / 2);
+    assert_equals(caretPosition.offsetNode, container);
+    assert_equals(caretPosition.offset, 0);
+  }, "document.caretPositionFromPoint() should return a CaretPosition over video elements");
+
+  test(() => {
+    container.setHTMLUnsafe(`<audio controls></audio>`);
+    const audio = document.querySelector("audio");
+    const caretPosition = document.caretPositionFromPoint(audio.offsetLeft + audio.offsetWidth / 2, audio.offsetTop + audio.offsetHeight / 2);
+    assert_equals(caretPosition.offsetNode, container);
+    assert_equals(caretPosition.offset, 0);
+  }, "document.caretPositionFromPoint() should return a CaretPosition over audio elements");
+
+  test(() => {
+    container.setHTMLUnsafe(`<svg width=100 height=100><circle cx=50 cy=50 r=50 /></svg>`);
+    const circle = document.querySelector("circle");
+    const caretPosition = document.caretPositionFromPoint(50, 50);
+    assert_equals(caretPosition.offsetNode, circle);
+    assert_equals(caretPosition.offset, 0);
+  }, "document.caretPositionFromPoint() should return a CaretPosition over SVG elements");
+
+  test(() => {
+    container.setHTMLUnsafe(`<div id="textDiv">aaa</div>`);
     const textDiv = document.getElementById("textDiv");
     const rect = textDiv.getBoundingClientRect();
     const characterWidth = rect.width / textDiv.textContent.length;
diff --git a/tests/wpt/tests/css/reference/green.html b/tests/wpt/tests/css/reference/green.html
new file mode 100644
index 00000000000..bef7405e96f
--- /dev/null
+++ b/tests/wpt/tests/css/reference/green.html
@@ -0,0 +1,3 @@
+<!DOCTYPE html>
+<title>CSS Test Reference</title>
+<body style="background-color:green"></body>
diff --git a/tests/wpt/tests/css/selectors/i18n/META.yml b/tests/wpt/tests/css/selectors/i18n/META.yml
index 9fa8c3b6c9b..ad1e4bf0913 100644
--- a/tests/wpt/tests/css/selectors/i18n/META.yml
+++ b/tests/wpt/tests/css/selectors/i18n/META.yml
@@ -1,2 +1,2 @@
 suggested_reviewers:
-  - r12a
+  - xfq
diff --git a/tests/wpt/tests/digital-credentials/allow-attribute-with-get.https.html b/tests/wpt/tests/digital-credentials/allow-attribute-with-get.https.html
index a13a188c9da..58873ddff79 100644
--- a/tests/wpt/tests/digital-credentials/allow-attribute-with-get.https.html
+++ b/tests/wpt/tests/digital-credentials/allow-attribute-with-get.https.html
@@ -104,8 +104,9 @@
                         const action = "get";
                         const options = {
                             digital: {
-                                // Results in TypeError when allowed, NotAllowedError when disallowed
-                                requests: [{ data: {}, protocol: "openid4vp" }],
+                                // Results in TypeError when allowed (since the requests list is empty),
+                                // NotAllowedError when disallowed
+                                requests: [],
                             },
                             mediation: "required",
                         };
@@ -122,11 +123,11 @@
                         const { name, message } = data;
                         const fullMessage = `${iframe.outerHTML} - ${message}`;
                         if (expectIsAllowed) {
-                            assert_true(
-                                name == "TypeError" || name == "NotAllowedError",
-                                fullMessage
-                            );
+                            // When the call is allowed, result in a TypeError since no valid requests
+                            // were passed to the call.
+                            assert_true(name == "TypeError", fullMessage);
                         } else {
+                            // When the call is disallowed, it MUST result in a NotAllowedError.
                             assert_equals(name, "NotAllowedError", fullMessage);
                         }
                         iframe.remove();
diff --git a/tests/wpt/tests/digital-credentials/enabled-on-self-origin-by-permissions-policy.https.sub.html b/tests/wpt/tests/digital-credentials/enabled-on-self-origin-by-permissions-policy.https.sub.html
index 261ebb0ce70..dde4a0f887b 100644
--- a/tests/wpt/tests/digital-credentials/enabled-on-self-origin-by-permissions-policy.https.sub.html
+++ b/tests/wpt/tests/digital-credentials/enabled-on-self-origin-by-permissions-policy.https.sub.html
@@ -9,6 +9,7 @@
 <body></body>
 <script type="module">
     import { makeGetOptions } from "./support/helper.js";
+    import { makeCreateOptions } from "./support/helper.js";
     const { HTTPS_REMOTE_ORIGIN } = get_host_info();
     const get_same_origin_src =
         "/permissions-policy/resources/digital-credentials-get.html";
diff --git a/tests/wpt/tests/domparsing/domparser-spurious-attributes.html b/tests/wpt/tests/domparsing/domparser-spurious-attributes.html
new file mode 100644
index 00000000000..f8a7ab894d0
--- /dev/null
+++ b/tests/wpt/tests/domparsing/domparser-spurious-attributes.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Spurious attributes in DOMParser</title>
+<link rel="help" href="https://crbug.com/435995566">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+test(() => {
+  const html = `<div title="this-should-not-be-an-attribute=1>&quot;hello"></div>`;
+  const doc = new DOMParser().parseFromString(html, "text/html");
+  const div = doc.querySelector("div");
+
+  assert_false(div.hasAttribute("this-should-not-be-an-attribute"));
+  assert_equals(div.getAttribute("title"), 'this-should-not-be-an-attribute=1>"hello');
+}, 'Using ">" and HTML entities in an attribute creates no unexpected attributes.');
+
+test(() => {
+  const html = `<div title="this-should-not-be-an-attribute=1>\rhello"></div>`;
+  const doc = new DOMParser().parseFromString(html, "text/html");
+  const div = doc.querySelector("div");
+
+  assert_false(div.hasAttribute("this-should-not-be-an-attribute"));
+  // Note: "\r" gets normalized to "\n" per https://infra.spec.whatwg.org/#normalize-newlines.
+  assert_equals(div.getAttribute("title"), 'this-should-not-be-an-attribute=1>\nhello');
+}, 'Using ">" and "\\r" in an attribute creates no unexpected attributes.');
+
+</script>
diff --git a/tests/wpt/tests/editing/other/data_transfer_on_input_event_with_insertfrompaste_type.html b/tests/wpt/tests/editing/other/data_transfer_on_input_event_with_insertfrompaste_type.html
new file mode 100644
index 00000000000..6c62c64294c
--- /dev/null
+++ b/tests/wpt/tests/editing/other/data_transfer_on_input_event_with_insertfrompaste_type.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>
+  This test is for testing data transfer on input event with
+  insertFromPaste type.
+</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>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="../include/editor-test-utils.js"></script>
+<div id="copy" contenteditable="true">copyMe</div>
+<div contenteditable="true" id="paste"></div>
+<textarea id="paste2"></textarea>
+<script>
+  const editable = document.getElementById("paste");
+  const textarea = document.querySelector("textarea");
+  // The editable div should have dataTransfer on input event with
+  // insertFromPaste type.
+  editable.addEventListener("input", (e) => {
+    assert_equals(e.inputType, "insertFromPaste");
+    assert_not_equals(e.dataTransfer, null);
+    assert_equals(e.dataTransfer.getData("text"), "copyMe");
+  });
+  // The textarea should not have dataTransfer on input event with
+  // insertFromPaste type.
+  textarea.addEventListener("input", (e) => {
+    assert_equals(e.inputType, "insertFromPaste");
+    assert_equals(e.dataTransfer, null);
+    assert_equals(e.data, "copyMe");
+  });
+  promise_test(async () => {
+    const range = document.createRange();
+    const contentToCopy = document.getElementById("copy");
+    range.selectNodeContents(contentToCopy);
+    const selection = window.getSelection();
+    selection.removeAllRanges();
+    selection.addRange(range);
+    // Send copy command
+    const utils = new EditorTestUtils(contentToCopy);
+    await utils.sendCopyShortcutKey();
+
+    selection.removeAllRanges();
+    const paste = document.getElementById("paste");
+    paste.focus();
+    await utils.sendPasteShortcutKey();
+    const paste2 = document.getElementById("paste2");
+    paste2.focus();
+    await utils.sendPasteShortcutKey();
+  }, "The data transfer on input event with insertFromPaste type should not be null on contenteditable elements but null on textarea or input elements.");
+</script>
diff --git a/tests/wpt/tests/editing/other/paste-with-newline-three-times.html b/tests/wpt/tests/editing/other/paste-with-newline-three-times.html
new file mode 100644
index 00000000000..c383a344c82
--- /dev/null
+++ b/tests/wpt/tests/editing/other/paste-with-newline-three-times.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<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/testdriver-actions.js"></script>
+<script src="../include/editor-test-utils.js"></script>
+<textarea id="copy">test
+</textarea>
+<textarea id="paste"></textarea>
+<textarea id="target"></textarea>
+<script>
+  promise_test(async () => {
+    const range = document.createRange();
+    const contentToCopy = document.getElementById("copy");
+    range.selectNodeContents(contentToCopy);
+    const selection = window.getSelection();
+    selection.removeAllRanges();
+    selection.addRange(range);
+    // Send copy command
+    let utils = new EditorTestUtils(contentToCopy);
+    await utils.sendCopyShortcutKey();
+    selection.removeAllRanges();
+
+    const textarea = document.getElementById("paste");
+    utils = new EditorTestUtils(textarea);
+    textarea.focus();
+    // Send paste command three times
+    await utils.sendPasteShortcutKey();
+    await utils.sendPasteShortcutKey();
+    await utils.sendPasteShortcutKey();
+
+    // Type "end"
+    await utils.sendKey("e", utils.kShiftKey);
+    await utils.sendKey("n", utils.kShiftKey);
+    await utils.sendKey("d", utils.kShiftKey);
+
+    assert_equals(textarea.value.substr(textarea.value.length - 3), "end");
+  }, "Pasting three times content with a newline at the end, the insertion caret keeps positioned at the end.");
+</script>
diff --git a/tests/wpt/tests/fedcm/fedcm-login-status/login-page-broken.https.html b/tests/wpt/tests/fedcm/fedcm-login-status/login-page-broken.https.html
index 06be5e48ed3..445b9e4e387 100644
--- a/tests/wpt/tests/fedcm/fedcm-login-status/login-page-broken.https.html
+++ b/tests/wpt/tests/fedcm/fedcm-login-status/login-page-broken.https.html
@@ -17,6 +17,7 @@ fedcm_test(async t => {
   await select_manifest(t, test_options);
 
   let cred_promise = navigator.credentials.get(test_options);
+  const cred_check = promise_rejects_dom(t, 'NetworkError', cred_promise);
   let type = await fedcm_get_dialog_type_promise(t);
   assert_equals(type, "ConfirmIdpLogin");
 
@@ -29,6 +30,6 @@ fedcm_test(async t => {
 
   // Because the login page never sends a signin status header, we
   // expect a promise rejection.
-  return promise_rejects_dom(t, 'NetworkError', cred_promise);
+  return cred_check;
 }, 'Tests that the promise does get resolved if a login page does not send a signin status header.');
 </script>
diff --git a/tests/wpt/tests/fullscreen/rendering/backdrop-object.html b/tests/wpt/tests/fullscreen/rendering/backdrop-object.html
index e733803deda..33e4100b399 100644
--- a/tests/wpt/tests/fullscreen/rendering/backdrop-object.html
+++ b/tests/wpt/tests/fullscreen/rendering/backdrop-object.html
@@ -10,6 +10,9 @@
 object::backdrop {
   background: blue;
 }
+object {
+  object-position: 0 0;
+}
 </style>
 <object width="200" type="image/svg+xml"></object>
 
diff --git a/tests/wpt/tests/html/dom/documents/dom-tree-accessors/nameditem-no-shadowing.tentative.html b/tests/wpt/tests/html/dom/documents/dom-tree-accessors/nameditem-no-shadowing.tentative.html
index dd56ca3628f..8bb9999e81f 100644
--- a/tests/wpt/tests/html/dom/documents/dom-tree-accessors/nameditem-no-shadowing.tentative.html
+++ b/tests/wpt/tests/html/dom/documents/dom-tree-accessors/nameditem-no-shadowing.tentative.html
@@ -9,9 +9,11 @@
 <img name="constructor">
 <img name="currentScript">
 <img name="forms">
+<img name="onreadystatechange">
 
 <!-- interface Node -->
 <img name="firstChild">
+<img name="isSameNode">
 
 <!-- Object.prototype -->
 <img name="__proto__">
@@ -32,11 +34,20 @@ test(function() {
   assert_equals(document.forms.length, 0);
 }, "document.forms is not shadowed");
 
+test(function() {
+  assert_equals(document.onreadystatechange, null);
+}, "document.onreadystatechange is not shadowed");
+
 test(function() {
   assert_true(document.firstChild instanceof DocumentType);
   assert_equals(document.firstChild, document.childNodes[0]);
 }, "document.firstChild is not shadowed");
 
+test(function() {
+  assert_true(document.isSameNode instanceof Function);
+  assert_true(document.isSameNode(document));
+}, "document.isSameNode() is not shadowed");
+
 test(function() {
   assert_equals(document.__proto__, HTMLDocument.prototype);
 }, "document.__proto__ is not shadowed");
diff --git a/tests/wpt/tests/html/dom/partial-updates/tentative/current-patch.html b/tests/wpt/tests/html/dom/partial-updates/tentative/current-patch.html
index dc6a14b9756..8a1aa6d4908 100644
--- a/tests/wpt/tests/html/dom/partial-updates/tentative/current-patch.html
+++ b/tests/wpt/tests/html/dom/partial-updates/tentative/current-patch.html
@@ -13,7 +13,7 @@ promise_test(async t => {
     assert_equals(placeholder.currentPatch, null, "no patch active, currentPatch should be null");
     doc.write('<template id=patchy patchfor="placeholder">');
     const {currentPatch} = placeholder;
-    assert_true(currentPatch instanceof PatchStatus);
+    assert_true(currentPatch instanceof Patch);
     const {finished, source} = currentPatch;
     assert_true(source instanceof HTMLTemplateElement);
     assert_equals(source.id, "patchy");
diff --git a/tests/wpt/tests/html/dom/partial-updates/tentative/patch-range.html b/tests/wpt/tests/html/dom/partial-updates/tentative/patch-range.html
index bf05c2b6fbd..4cb80a2b85e 100644
--- a/tests/wpt/tests/html/dom/partial-updates/tentative/patch-range.html
+++ b/tests/wpt/tests/html/dom/partial-updates/tentative/patch-range.html
@@ -21,7 +21,7 @@ promise_test(async t => {
     const writable = placeholder.patchBetween(first, last);
     const response = new Response("<span id=middle>Content</span>", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.currentPatch, null);
     const middle = placeholder.querySelector("#middle");
@@ -40,7 +40,7 @@ promise_test(async t => {
     const writable = placeholder.patchAfter(first);
     const response = new Response("<span id=middle>Content</span>", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.currentPatch, null);
     const middle = placeholder.querySelector("#middle");
@@ -59,7 +59,7 @@ promise_test(async t => {
     const writable = placeholder.patchBefore(last);
     const response = new Response("<span id=middle>Content</span>", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.currentPatch, null);
     const middle = placeholder.querySelector("#middle");
@@ -78,7 +78,7 @@ promise_test(async t => {
     const writable = placeholder.patchAfter(last);
     const response = new Response("<span id=middle>Content</span>", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.currentPatch, null);
     const middle = placeholder.querySelector("#middle");
@@ -97,7 +97,7 @@ promise_test(async t => {
     const writable = placeholder.patchBefore(first);
     const response = new Response("<span id=middle>Content</span>", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.currentPatch, null);
     const middle = placeholder.querySelector("#middle");
diff --git a/tests/wpt/tests/html/dom/partial-updates/tentative/patch-self.html b/tests/wpt/tests/html/dom/partial-updates/tentative/patch-self.html
index e5938b69554..68abc960500 100644
--- a/tests/wpt/tests/html/dom/partial-updates/tentative/patch-self.html
+++ b/tests/wpt/tests/html/dom/partial-updates/tentative/patch-self.html
@@ -15,7 +15,7 @@ promise_test(async t => {
     assert_true(writable instanceof WritableStream, "node.patchSelf() returns a writable stream");
     const response = new Response("Content", {headers: {"Content-Type": "text/html"}});
     response.body.pipeTo(writable);
-    assert_true(placeholder.currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(placeholder.currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     await placeholder.currentPatch.finished;
     assert_equals(placeholder.textContent, "Content");
     assert_equals(placeholder.currentPatch, null);
@@ -29,7 +29,7 @@ promise_test(async t => {
     const writer = writable.getWriter();
     await writer.write("Text");
     const {currentPatch} = placeholder;
-    assert_true(currentPatch instanceof PatchStatus, "currentPatch should be a PatchStatus right after connecting a stream");
+    assert_true(currentPatch instanceof Patch, "currentPatch should be a Patch right after connecting a stream");
     writer.close();
     await currentPatch.finished;
     assert_equals(placeholder.textContent, "Text");
diff --git a/tests/wpt/tests/html/dom/partial-updates/tentative/template-patch-range.html b/tests/wpt/tests/html/dom/partial-updates/tentative/template-patch-range.html
new file mode 100644
index 00000000000..e39afca15d6
--- /dev/null
+++ b/tests/wpt/tests/html/dom/partial-updates/tentative/template-patch-range.html
@@ -0,0 +1,53 @@
+<!DOCTYPE HTML>
+<meta charset="utf-8" />
+<title>HTML partial updates: patchstartafter and patchendbefore</title>
+<link rel=help href="https://github.com/WICG/declarative-partial-updates">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div id="placeholder">
+    <span id="first"></span>
+    <span id="last"></span>
+</div>
+<script>
+    const placeholder = document.querySelector("#placeholder");
+    const original_placeholder_text = placeholder.innerHTML;
+    function reset_state() {
+        placeholder.innerHTML = original_placeholder_text;
+    }
+</script>
+<template patchfor="placeholder" patchstartafter="first" patchendbefore="last">
+    <span id="inserted_element">content</span>
+</template>
+<script>
+test(t => {
+    const inserted_element = document.querySelector("#inserted_element");
+    assert_equals(inserted_element.parentElement.id, "placeholder");
+    assert_equals(inserted_element.nextElementSibling.id, "last");
+    assert_equals(inserted_element.previousElementSibling.id, "first");
+}, "<template patchstartafter=first patchendbefore=last> should insert the patch between two existing nodes");
+
+promise_test(async t => {
+    reset_state();
+    const writer = document.patchAll().getWriter();
+    await writer.write("<span>garbage</span><template patchfor=placeholder patchendbefore=last><span id=content>abc</span></template>");
+    await writer.close();
+    const inserted_element = document.querySelector("#content");
+    assert_true(!!inserted_element);
+    assert_equals(inserted_element.parentElement.id, "placeholder");
+    assert_equals(inserted_element.nextElementSibling.id, "last");
+    assert_equals(inserted_element.previousElementSibling, null);
+}, "<template patchendbefore=last> should insert the patch before an existing node");
+
+promise_test(async t => {
+    reset_state();
+    const writer = document.patchAll().getWriter();
+    await writer.write("<span>garbage</span><template patchfor=placeholder patchstartafter=first><span id=content>abc</span></template>");
+    await writer.close();
+    const inserted_element = document.querySelector("#content");
+    assert_equals(inserted_element.parentElement.id, "placeholder");
+    assert_equals(inserted_element.nextElementSibling, null);
+    assert_equals(inserted_element.previousElementSibling.id, "first");
+}, "<template patchstartafter=first> should insert the patch after an existing node");
+
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/scripting/the-script-element/classic-external-unknown-scheme.html b/tests/wpt/tests/html/scripting/the-script-element/classic-external-unknown-scheme.html
new file mode 100644
index 00000000000..e158721d035
--- /dev/null
+++ b/tests/wpt/tests/html/scripting/the-script-element/classic-external-unknown-scheme.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+window.onload = function() {
+    done();
+}
+setup({ single_test: true });
+var flag = false;
+function unknown() {
+    document.write("<scr" + "ipt>assert_false(flag); flag = true; assert_equals(document.readyState, 'loading');</scr" + "ipt>");
+}
+function known() {
+    document.write("<scr" + "ipt>assert_true(flag); assert_equals(document.readyState, 'loading');</scr" + "ipt>");
+}
+</script>
+<script onerror="unknown();" src="unknown://example/"></script>
+<script onerror="known();" src="resources/must-not-exist.js"></script>
+<script>
+assert_equals(document.getElementsByTagName("script").length, 8);
+</script>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-image-update.tentative.html b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-image-update.tentative.html
index 6875188ad16..8e918a6194d 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-image-update.tentative.html
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-image-update.tentative.html
@@ -10,12 +10,14 @@
 <body>
   <img id="image" src="resources/animated.gif">
 <script>
-  const image = document.getElementById('image');
-  requestAnimationFrame(()=>{
-    setTimeout(() => {
-      takeScreenshot();
-    }, 150);
-  })
+  window.addEventListener("load", go);
+  function go() {
+    requestAnimationFrame(()=>{
+      setTimeout(() => {
+        takeScreenshot();
+      }, 150);
+    });
+  }
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html
index dbc104a5154..71b6b148c22 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/animated-webp-update.tentative.html
@@ -10,12 +10,14 @@
   <body>
     <img id="image" src="resources/animated.webp" />
     <script>
-      const image = document.getElementById("image");
-      requestAnimationFrame(() => {
-        setTimeout(() => {
-          takeScreenshot();
-        }, 150);
-      });
+      window.addEventListener("load", go);
+      function go() {
+        requestAnimationFrame(() => {
+          setTimeout(() => {
+            takeScreenshot();
+          }, 150);
+        });
+      }
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/resources/animated.gif b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/resources/animated.gif
index 7694add55e0c98ec3ee5d9110e5fb16b4d819137..caf0772b8c2677f6ac93cc3df15c67e2c5396d98 100644
GIT binary patch
delta 42
ycmdnaw1i2@-P6s&GBJfAh2aAO!+!<_h6V=3pDYYq4F4zUwy-d~VE#XGYZCwgdkuI1

delta 61
zcmZ3&w4F)U-P6s&GBJfAg`t6g;XeZdkW&25?dKX2?CcoeYNTht%m@@z{K>+?#lSF8
Ns)dCm1xPPy0sz(n4vGK(

diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-img-element/resources/animated.webp b/tests/wpt/tests/html/semantics/embedded-content/the-img-element/resources/animated.webp
index ebe15f88496fd03725df2445034ef0f400af652c..4f6577c21bb8c976d47417cb3bf67a23e548f1f0 100644
GIT binary patch
literal 286
zcmWIYbaNA9WMBw)bqWXzu!!JdU|?VZ;$$##^z-y(1M>a@0V9K>pRZd9kOu(}6)8Xt
zP@h5!kPcvDn9Hb@!jQsXXDHF_qNKP`AcR4InPtoNf}LM>@E_nmz`*cWAxU3{Io9``
z(x(HaSMEImb6zws{QEC5|NsAuGyX2NKdJryf3x8q$^Hjt>Oahv);;V1G#g}h9*~9r
zh}{C}5WB;Gg2dQ;?0Rr@$DR$mrRF=jPcuL{HVi<!rO(y>U+*HPaDOfP|G$?n37FKM
IbO6}|0A(Or)Bpeg

literal 152
zcmWIYbaR`)z`zjh>J$(bU=hIuWHSMAG8j4fdHS*ec?=By|1&T+`uV!)fq5VTq9O&T
v9H`Gn3@D<Xd_aPMUEpv3zjj6sj{o1i1^@c1GGWv8f|-E<Rad})4isGgyu%@2

diff --git a/tests/wpt/tests/html/semantics/forms/the-input-element/radio-focus-navigation-group-focusable-focus.html b/tests/wpt/tests/html/semantics/forms/the-input-element/radio-focus-navigation-group-focusable-focus.html
index 7885332cc4b..e056f15a22a 100644
--- a/tests/wpt/tests/html/semantics/forms/the-input-element/radio-focus-navigation-group-focusable-focus.html
+++ b/tests/wpt/tests/html/semantics/forms/the-input-element/radio-focus-navigation-group-focusable-focus.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <meta charset="utf-8">
 <title>Focus Navigation for the radio group</title>
+<meta name="timeout" content="long">
 <link rel="author" href="mailto:zhoupeng.1996@bytedance.com">
 <link rel="help" href="https://issues.chromium.org/issues/421837104">
 <script src="/resources/testharness.js"></script>
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/customizable-select-in-page-appearance-ref.html b/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/customizable-select-in-page-appearance-ref.html
index 57ea51e367c..d59bd7c5631 100644
--- a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/customizable-select-in-page-appearance-ref.html
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/customizable-select-in-page-appearance-ref.html
@@ -1,7 +1,6 @@
 <!DOCTYPE html>
 <link rel=stylesheet href="resources/customizable-select-in-page.css">
 <link rel=stylesheet href="../customizable-select/resources/customizable-select-styles.css">
-<script src="resources/customizable-select-in-page.js"></script>
 
 <div class=customizable-select-in-page size=4>
   <div class="customizable-select-option selected">select multiple</div>
@@ -43,7 +42,3 @@
   <div class="customizable-select-option disabled">option in optgroup</div>
   <div class=customizable-select-option>option out of optgroup</div>
 </div>
-
-<script>
-updateCustomizableSelectInPageSize();
-</script>
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.css b/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.css
index 1e3a50e30ab..3f79f4c9212 100644
--- a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.css
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.css
@@ -1,6 +1,5 @@
 .customizable-select-in-page {
   display: inline-block;
-  border: 1px solid;
   overflow-inline: auto;
   overflow-block: auto;
 }
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.js b/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.js
deleted file mode 100644
index 13230943321..00000000000
--- a/tests/wpt/tests/html/semantics/forms/the-select-element/customizable-select-in-page/resources/customizable-select-in-page.js
+++ /dev/null
@@ -1,13 +0,0 @@
-function updateCustomizableSelectInPageSize() {
-  document.querySelectorAll('.customizable-select-in-page').forEach(select => {
-    const size = Number(select.getAttribute('size'));
-    if (size) {
-      let optionHeight = 0;
-      select.querySelectorAll('.customizable-select-option').forEach(option => {
-        const rect = option.getBoundingClientRect();
-        optionHeight = Math.max(optionHeight, rect.height);
-      });
-      select.style.height = (optionHeight * size) + 'px';
-    }
-  });
-}
diff --git a/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds-ref.html b/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds-ref.html
new file mode 100644
index 00000000000..94d516075ab
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds-ref.html
@@ -0,0 +1,12 @@
+<!doctype html>
+<html>
+  <meta charset="utf-8" />
+  <body>
+    <style>
+      permission {
+        border-radius: 25%/50%;
+      }
+    </style>
+    <permission type="camera"></permission>
+  </body>
+</html>
diff --git a/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds.tentative.html b/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds.tentative.html
new file mode 100644
index 00000000000..908a37b03e8
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/permission-element/border-radius-bounds.tentative.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<html>
+  <meta charset="utf-8" />
+  <link rel="match" href="border-radius-bounds-ref.html" />
+  <link
+    rel="help"
+    href="https://github.com/WICG/PEPC/blob/main/explainer.md#locking-the-pepc-style"
+  />
+  <body>
+    <style>
+      permission {
+        border-radius: 1000px;
+      }
+    </style>
+    <permission type="camera"></permission>
+  </body>
+</html>
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-nested-in-button.html b/tests/wpt/tests/html/semantics/popovers/popover-nested-in-button.html
index ed4cb78f8c8..4ea6a4ed4e9 100644
--- a/tests/wpt/tests/html/semantics/popovers/popover-nested-in-button.html
+++ b/tests/wpt/tests/html/semantics/popovers/popover-nested-in-button.html
@@ -21,6 +21,16 @@
   </div>
 </button>
 
+<div id=case4>
+  <template shadowrootmode=open>
+    <button popovertarget=case4>Button
+      <div popover id=case4>
+        <span class=descendant>Popover</span>
+      </div>
+    </button>
+  </template>
+</div>
+
 <script>
 promise_test(async t => {
   const invoker = document.querySelector('#case1');
@@ -60,4 +70,15 @@ promise_test(async t => {
   innerInvoker.click();
   assert_false(popover.matches(':popover-open'),'inner invoker still works');
 },'invoker inside popover still works, even with weird nesting');
+
+promise_test(async t => {
+  const popover = document.querySelector('#case4').shadowRoot.querySelector('[popover]');
+  const invoker = popover.parentElement;
+  const descendant = popover.querySelector('.descendant');
+  assert_false(popover.matches(':popover-open'));
+  invoker.click();
+  assert_true(popover.matches(':popover-open'));
+  descendant.click();
+  assert_true(popover.matches(':popover-open'),'descendant doesn\'t close popover');
+},'invoker inside popover still works, even inside of a shadowroot');
 </script>
diff --git a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/cors-crossorigin-requests.html b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/cors-crossorigin-requests.html
index 7a0f340f405..ca33b1eab79 100644
--- a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/cors-crossorigin-requests.html
+++ b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/cors-crossorigin-requests.html
@@ -7,26 +7,33 @@
 </head>
 <body>
     <h1>json-module-crossorigin</h1>
-    <iframe id="import-WithCORS" src="crossorigin-import-with-cors.sub.html"></iframe>
-    <iframe id="import-NoCORS" src="crossorigin-import-without-cors.sub.html"></iframe>
-    <iframe id="import-parseerror-WithCors" src="crossorigin-import-parse-error-with-cors.sub.html"></iframe>
     <script>
 
         var tests = [
-                { "obj": async_test("Imported JSON module, cross-origin with CORS"), "id": "import-WithCORS", "expected": "imported JSON: 42" },
-                { "obj": async_test("Imported JSON module, cross-origin, missing CORS ACAO header"), "id": "import-NoCORS", "expected": "error" },
-                { "obj": async_test("Imported JSON module with parse error, cross-origin, with CORS"), "id": "import-parseerror-WithCors", "expected": "SyntaxError" },
+                { "obj": async_test("Imported JSON module, cross-origin with CORS"), "id": "import-WithCORS", "expected": "imported JSON: 42", "url": "crossorigin-import-with-cors.sub.html" },
+                { "obj": async_test("Imported JSON module, cross-origin, missing CORS ACAO header"), "id": "import-NoCORS", "expected": "error", "url": "crossorigin-import-without-cors.sub.html" },
+                { "obj": async_test("Imported JSON module with parse error, cross-origin, with CORS"), "id": "import-parseerror-WithCors", "expected": "SyntaxError", "url": "crossorigin-import-parse-error-with-cors.sub.html" },
             ];
 
-        window.addEventListener("load", function () {
-            tests.forEach(function (test) {
-                var target = document.getElementById(test.id);
+        async function loadTest(test) {
+            return new Promise((resolve) => {
+                const iframe = document.createElement('iframe');
+                iframe.id = test.id;
+                iframe.src = test.url;
+                iframe.onload = () => resolve(iframe);
+                document.body.appendChild(iframe);
+            });
+        }
+
+        (async function () {
+            for (const test of tests) {
+                const target = await loadTest(test);
                 test.obj.step(function () {
                     assert_equals(target.contentDocument._log, test.expected, "Unexpected _log value");
                 });
                 test.obj.done();
-            });
-        });
+            }
+        })();
 
     </script>
 </body>
diff --git a/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance-ref.html b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance-ref.html
new file mode 100644
index 00000000000..16a61fdbb46
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance-ref.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<link rel="author" href="mailto:masonf@chromium.org">
+
+<div class=example>
+  <button class=invoker><span class=before>::before</span><span>Button</span><span class=after>::after</span></button>
+  <button class=interesthint>::interest-hint</button>
+</div>
+<div class=example>
+  <a href=# class=invoker><span class=before>::before</span><span>Link</span><button class=interesthint>::interest-hint</button><span class=after>::after</span></a>
+</div>
+<div class=example>
+  <img src="/images/blue.png" usemap="#map1" width=40 height=40>
+  <span class=before>::before</span><map id="map1"><area href="/" shape="default" class=invoker></map><button class=interesthint>::interest-hint</button><span class=after>::after</span>
+</div>
+
+<div id=target></div>
+
+<style>
+  .before {
+    content: "::before";
+    border: 1px solid green;
+  }
+  /* UA stylesheet for ::interest-hint: */
+  .interesthint {
+    user-select: none;
+    color: buttontext;
+    display: inline-block;
+    text-align: center;
+    cursor: default;
+    background-color: buttonface;
+    margin-inline-start: 0.5em;
+    padding-block: 1px;
+    padding-inline: 6px;
+    border-width: 1px;
+    border-radius: 5px;
+    border-style: outset;
+    border-color: buttonborder;
+  }
+  .after {
+    content: "::after";
+    border: 1px solid green;
+  }
+  /* Test convenience: */
+  .example {
+    display:block;
+    width: 400px;
+    height: 50px;
+  }
+  .invoker>span {
+    border: 1px solid black;
+  }
+  .interesthint {
+    font-family: arial;
+    font-size: 13px;
+  }
+</style>
+
+<script>
+  // Fix up parser moving out the button
+  const interestButton = document.querySelector('button.invoker');
+  const movedButton = document.querySelector('button.invoker + button.interesthint');
+  const afterSpan = interestButton.querySelector('.after');
+  interestButton.insertBefore(movedButton, afterSpan);
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html
new file mode 100644
index 00000000000..eded650c285
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element-appearance.tentative.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel="help" href="https://open-ui.org/components/interest-invokers.explainer">
+<link rel="match" href="interestfor-pseudo-element-appearance-ref.html">
+
+<div class=example>
+  <button interestfor=target><span>Button</span></button>
+</div>
+<div class=example>
+  <a href=# interestfor=target><span>Link</span></a>
+</div>
+<div class=example>
+  <img src="/images/blue.png" usemap="#map1" width=40 height=40>
+  <map id="map1"><area href="/" shape="default" interestfor=target></map>
+</div>
+
+<div id=target></div>
+
+<style>
+  [interestfor]::before {
+    content: "::before";
+    border: 1px solid green;
+  }
+  [interestfor]::interest-hint {
+    content: "::interest-hint";
+    font-family: arial;
+    font-size: 13px;
+  }
+  [interestfor]::after {
+    content: "::after";
+    border: 1px solid green;
+  }
+  /* Test convenience: */
+  .example {
+    display:block;
+    width: 400px;
+    height: 50px;
+  }
+  [interestfor]>span {
+    border: 1px solid black;
+  }
+</style>
diff --git a/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element.tentative.html b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element.tentative.html
new file mode 100644
index 00000000000..8faeec0e080
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/the-button-element/interest-for/interestfor-pseudo-element.tentative.html
@@ -0,0 +1,96 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<link rel="author" href="mailto:masonf@chromium.org">
+<link rel="help" href="https://open-ui.org/components/interest-invokers.explainer">
+<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>
+<script src="resources/invoker-utils.js"></script>
+
+<div id=examples>
+  <button interestfor=target>Button</button>
+  <a href=# interestfor=target>Link</a>
+</div>
+
+<div id=target popover>Target</div>
+<button id=unrelated>Unrelated</div>
+
+<style>
+  [interestfor] {
+    interest-delay: 1000s;
+  }
+  ::interest-hint {
+    content:"pseudo";
+    display: block;
+    position: absolute;
+    width: 50px;
+    height: 50px;
+    left: 150px;
+    padding:0;
+    margin:0;
+  }
+  button, a {
+    display:block;
+    width: 100px;
+    height: 50px;
+  }
+</style>
+
+<script>
+const target = document.getElementById('target');
+const unrelated = document.getElementById('unrelated');
+
+let interestFired = 0;
+let loseInterestFired = 0;
+target.addEventListener('interest', (e) => {
+  ++interestFired;
+});
+target.addEventListener('loseinterest', (e) => {
+  ++loseInterestFired;
+});
+
+function test(invoker) {
+  promise_test(async (t) => {
+    interestFired = 0, loseInterestFired = 0;
+    await hoverOver(invoker);
+    assert_equals(interestFired, 0, 'Hovering should not immediately show interest (delay)');
+    await hoverOver(unrelated);
+    assert_equals(interestFired, 0, 'No extra events');
+    assert_equals(loseInterestFired, 0, 'No extra events');
+
+    let rect = invoker.getBoundingClientRect();
+    const buttonlocX = rect.x + 175;
+    const buttonlocY = rect.y + 30;
+    await new test_driver.Actions()
+      .pointerMove(buttonlocX, buttonlocY, {})
+      .send();
+    assert_equals(interestFired, 0, 'Hovering the pseudo button should not show interest (delay)');
+    await new test_driver.Actions()
+      .addPointer("touchPointer", "touch")
+      .pointerMove(buttonlocX, buttonlocY, {})
+      .pointerDown()
+      .pointerUp()
+      .send();
+    assert_equals(interestFired, 1, 'Clicking/tapping the pseudo button should show interest immediately');
+    await new test_driver.Actions()
+      .addPointer("touchPointer", "touch")
+      .pointerMove(0,0,{unrelated})
+      .send();
+    assert_equals(interestFired, 1, 'No extra events');
+    assert_equals(loseInterestFired, 0, 'No "hover" with touch pointers, so we should\'t lose interest yet');
+    await new test_driver.Actions()
+      .addPointer("touchPointer", "touch")
+      .pointerMove(0,0,{unrelated})
+      .pointerDown()
+      .pointerUp()
+      .send();
+    await waitForRender();
+    assert_equals(interestFired, 1, 'No extra events');
+    assert_equals(loseInterestFired, 1, 'Tapping outside should lose interest');
+  },`pseudo element should work for ${invoker.textContent}`);
+}
+
+document.querySelectorAll('#examples > *').forEach(test);
+</script>
diff --git a/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-lock.https.tentative.window.js b/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-lock.https.tentative.window.js
index 46d8752f20d..51a44db11b5 100644
--- a/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-lock.https.tentative.window.js
+++ b/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-lock.https.tentative.window.js
@@ -21,6 +21,7 @@ promise_test(async t => {
     return new Promise((resolve) => {
       navigator.locks.request('resource', () => {
         resolve(42);
+        return new Promise(() => {});
       });
     })
   });
diff --git a/tests/wpt/tests/pointerevents/pointerevent_touch-adjustment_click_target.html b/tests/wpt/tests/pointerevents/pointerevent_touch-adjustment_click_target.html
index 46d5ac1793b..73214f1edba 100644
--- a/tests/wpt/tests/pointerevents/pointerevent_touch-adjustment_click_target.html
+++ b/tests/wpt/tests/pointerevents/pointerevent_touch-adjustment_click_target.html
@@ -26,16 +26,13 @@ function inject_input() {
         .send();
 }
 
-
-addEventListener('load', () => {
-  input_gesture = inject_input();
-});
-
-async_test(t => {
+promise_test(async t => {
     const link = document.getElementById('link');
     const expectedEventLog = ['pointerdown-link', 'touchstart-link', 'pointerup-link', 'touchend-link', 'click-link'];
     const eventLogRecorder = [];
 
+    await new Promise(resolve => addEventListener("load", resolve));
+
     const eventNames = ['touchstart', 'touchmove', 'touchend', 'pointerdown', 'pointermove', 'pointerup', 'click'];
     for (eventName of eventNames) {
         document.addEventListener(eventName, t.step_func(event => {
@@ -63,5 +60,6 @@ async_test(t => {
             }
         }));
     }
+    input_gesture = inject_input();
 });
 </script>
diff --git a/tests/wpt/tests/reporting/crashReport-test.html b/tests/wpt/tests/reporting/crashReport-test.html
new file mode 100644
index 00000000000..520c4ddf376
--- /dev/null
+++ b/tests/wpt/tests/reporting/crashReport-test.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>CrashReportStorage API</title>
+<link rel="author" title="Dominic Farolino" href="mailto:dom@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+'use strict';
+
+// These tests verify the throwing and promise rejection behavior of the
+// crashReport API. Each test is run in an iframe to ensure a fresh state.
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  // Detach the document.
+  iframe.remove();
+  assert_equals(child_window.crashReport, null, "getter returns null");
+}, 'crashReport getter returns null in detached Documents');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  await loadPromise;
+
+  // Cache the iframe's `crashReport` and other important things for the
+  // following assertions.
+  const child_window = iframe.contentWindow;
+  const cachedCrashReport = child_window.crashReport;
+  const cachedDOMExceptionConstructor = child_window.DOMException;
+
+  iframe.remove();
+  const createRejection = cachedCrashReport.initialize(256);
+  try {
+    await createRejection;
+    assert_unreached('createRejection must reject');
+  } catch (e) {
+    // Note that we should be using `promise_rejects_dom` here, but this does
+    // not reliably work with detached Windows/event loops, so we have to run
+    // some manual assertions here.
+    assert_true(e instanceof cachedDOMExceptionConstructor,
+        "promise rejects with DOMException");
+    assert_equals(e.code, cachedDOMExceptionConstructor.INVALID_STATE_ERR,
+        "promise rejects with InvalidStateError specifically");
+  }
+}, 'crashReport initialize() throws InvalidStateError in detached Documents');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  const cachedCrashReport = child_window.crashReport;
+  await cachedCrashReport.initialize(256);
+  assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
+    // Detach the document.
+    iframe.remove();
+    cachedCrashReport.set('key', 'value');
+  });
+}, 'crashReport.set() throws InvalidStateError in detached Documents');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  const cachedCrashReport = child_window.crashReport;
+  await cachedCrashReport.initialize(256);
+  cachedCrashReport.set('key', 'value');
+
+  assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
+    // Detach the document.
+    iframe.remove();
+    cachedCrashReport.remove('key', 'value');
+  });
+}, 'crashReport.remove() throws InvalidStateError in detached Documents');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  t.add_cleanup(() => iframe.remove());
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  // The maximum allowed size is 5MB.
+  const large_size = 5 * 1024 * 1024 + 1;
+  await promise_rejects_dom(t, 'NotAllowedError', child_window.DOMException,
+      child_window.crashReport.initialize(large_size));
+}, 'crashReport.initialize() with size > 5MB rejects with NotAllowedError');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  t.add_cleanup(() => iframe.remove());
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  child_window.crashReport.initialize(1024);
+  await promise_rejects_dom(t, 'InvalidStateError', child_window.DOMException,
+      child_window.crashReport.initialize(1024));
+}, 'Calling crashReport.initialize() a second time throws InvalidStateError');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  t.add_cleanup(() => iframe.remove());
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  child_window.crashReport.initialize(1024);
+  assert_throws_dom('InvalidStateError', child_window.DOMException, () => {
+    child_window.crashReport.set('key', 'value');
+  });
+}, 'crashReport.set() throws before initialize() resolves');
+
+promise_test(async t => {
+  const iframe = document.createElement('iframe');
+  const loadPromise = new Promise(resolve => iframe.onload = resolve);
+  document.body.appendChild(iframe);
+  t.add_cleanup(() => iframe.remove());
+  await loadPromise;
+
+  const child_window = iframe.contentWindow;
+  await child_window.crashReport.initialize(1024);
+  child_window.crashReport.set('key', 'value');
+  child_window.crashReport.remove('key');
+}, 'crashReport.set() and .remove() succeed after initialize() resolves');
+</script>
+</body>
diff --git a/tests/wpt/tests/scroll-animations/css/chrome-40925697.html b/tests/wpt/tests/scroll-animations/css/chrome-40925697.html
new file mode 100644
index 00000000000..2e86bb0fb2e
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/css/chrome-40925697.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>Chrome issue 40925697: animatestart / animateend incorrectly called on load</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#events">
+<link rel="help" href="https://crbug.com/40925697">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<style>
+  @keyframes scale-up {
+    from {
+      scale: 0;
+    }
+  }
+  #target {
+    display: block;
+    width: 400px;
+    height: 400px;
+    margin: 150vh auto;
+    animation: scale-up linear forwards;
+    animation-timeline: view();
+    animation-range: entry 0% cover 50%;
+  }
+</style>
+<img id="target" src="data:image/svg,">
+<script>
+  promise_test(async t => {
+    let start_count = 0;
+    let end_count = 0;
+    target.addEventListener("animationend", () => end_count++);
+    target.addEventListener("animationstart", () => start_count++);
+
+    const anim = target.getAnimations()[0];
+    await anim.ready;
+    await waitForNextFrame();
+    await waitForNextFrame();
+
+    assert_equals(start_count, 0, "animationstart not triggered before scrolling");
+    assert_equals(end_count, 0, "animationend not triggered before scrolling");
+
+    target.scrollIntoView();
+    await waitForNextFrame();
+    await waitForNextFrame();
+    assert_equals(start_count, 1, "animationstart triggered by scroll");
+    assert_equals(end_count, 1, "animationend triggered after scroll");
+  }, "Animation events triggered correctly");
+
+</script>
diff --git a/tests/wpt/tests/selection/shadow-dom/tentative/Selection-getComposedRanges.html b/tests/wpt/tests/selection/shadow-dom/tentative/Selection-getComposedRanges.html
index 8c0f2bb8e15..63e6d41cd77 100644
--- a/tests/wpt/tests/selection/shadow-dom/tentative/Selection-getComposedRanges.html
+++ b/tests/wpt/tests/selection/shadow-dom/tentative/Selection-getComposedRanges.html
@@ -56,7 +56,7 @@ test(() => {
     assert_equals(ranges[0].startOffset, 0);
     assert_equals(ranges[0].endContainer, shadowRoot.firstChild);
     assert_equals(ranges[0].endOffset, 5);
-}, 'getComposedRanges returns a sequence with a static range pointing to a shadaw tree when there is a selection in the shadow tree and the shadow tree is specified as an argument');
+}, 'getComposedRanges returns a sequence with a static range pointing to a shadow tree when there is a selection in the shadow tree and the shadow tree is specified as an argument');
 
 test(() => {
     container.innerHTML = 'a<div id="host"></div>b';
diff --git a/tests/wpt/tests/shadow-dom/Document-caretPositionFromPoint.tentative.html b/tests/wpt/tests/shadow-dom/Document-caretPositionFromPoint.tentative.html
index b01bc0ae6ed..2a508b295fd 100644
--- a/tests/wpt/tests/shadow-dom/Document-caretPositionFromPoint.tentative.html
+++ b/tests/wpt/tests/shadow-dom/Document-caretPositionFromPoint.tentative.html
@@ -74,7 +74,7 @@ test(() => {
     assert_equals(typeof(caretPosition.offset), "number");
     assert_equals(caretPosition.offsetNode, shadowRoot.firstChild.firstChild);
     assert_equals(caretPosition.offset, characterIndex);
-}, 'document.caretPositionFromPoint() should return a CaretPosition at the specified location pointing to a closed shadaw tree when the shadow tree is specified as an argument');
+}, 'document.caretPositionFromPoint() should return a CaretPosition at the specified location pointing to a closed shadow tree when the shadow tree is specified as an argument');
 
 test(() => {
     container.setHTMLUnsafe(`
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/exec.py b/tests/wpt/tests/speculation-rules/prerender/resources/exec.py
index de0636117db..62483ebd190 100644
--- a/tests/wpt/tests/speculation-rules/prerender/resources/exec.py
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/exec.py
@@ -2,8 +2,8 @@ from wptserve.utils import isomorphic_decode
 import os
 
 def main(request, response):
-    purpose = request.headers.get(b"purpose")
-    if (purpose == b'prefetch' and b"code" in request.GET):
+    sec_purpose = request.headers.get(b"sec-purpose")
+    if (sec_purpose == b'prefetch;prerender' and b"code" in request.GET):
         code = int(request.GET.first(b"code"))
     else:
         code = 200
diff --git a/tests/wpt/tests/svg/crashtests/firefox-bug-1980267.html b/tests/wpt/tests/svg/crashtests/firefox-bug-1980267.html
new file mode 100644
index 00000000000..f1eb82a24f4
--- /dev/null
+++ b/tests/wpt/tests/svg/crashtests/firefox-bug-1980267.html
@@ -0,0 +1,12 @@
+<style>
+* { zoom: 18446744073 }
+</style>
+<script>
+window.addEventListener("DOMContentLoaded", () => {
+  a.after(b)
+})
+</script>
+<svg>
+<polygon points="1,5 1,6" marker-start="url(#b)"></polygon>
+<circle id="a">
+<marker id="b" viewBox="1,53,0,52">
diff --git a/tests/wpt/tests/svg/path/interfaces/SVGPathSegment.svg b/tests/wpt/tests/svg/path/interfaces/SVGPathSegment.svg
index a4f67363dc3..d0f8034d50e 100644
--- a/tests/wpt/tests/svg/path/interfaces/SVGPathSegment.svg
+++ b/tests/wpt/tests/svg/path/interfaces/SVGPathSegment.svg
@@ -85,6 +85,14 @@
         { type: "Z", values: [] }
       ]
     },
+    {
+      description: "arc",
+      input: "M 0 0 A 10 10 0 0 1 20 20",
+      output: [
+        { type: "M", values: [0, 0] },
+        { type: "A", values: [10, 10, 0, 0, 1, 20, 20] }
+      ]
+    },
     {
       description: "cubic",
       input: "M 413 140 C 413 140 438 40 302 44",
diff --git a/tests/wpt/tests/svg/types/scripted/SVGAnimatedInteger.html b/tests/wpt/tests/svg/types/scripted/SVGAnimatedInteger.html
index 849c13d3671..e8e8b30a7a5 100644
--- a/tests/wpt/tests/svg/types/scripted/SVGAnimatedInteger.html
+++ b/tests/wpt/tests/svg/types/scripted/SVGAnimatedInteger.html
@@ -31,5 +31,18 @@ test(function() {
   assert_equals(feConvolveMatrix.targetX.baseVal, 0);
   feConvolveMatrix.targetX.baseVal = 300;
   assert_equals(feConvolveMatrix.targetX.baseVal, 300);
+
+  // Check initial orderX value.
+  assert_true(feConvolveMatrix.orderX instanceof SVGAnimatedInteger);
+  assert_equals(typeof(feConvolveMatrix.orderX.baseVal), "number");
+  assert_equals(feConvolveMatrix.orderX.baseVal, 3);
+
+  // Check assigning various valid and invalid values.
+  feConvolveMatrix.setAttribute("order", "5");
+  assert_equals(feConvolveMatrix.orderX.baseVal, 5);
+  feConvolveMatrix.setAttribute("order", "-1.5");
+  assert_equals(feConvolveMatrix.orderX.baseVal, -1);
+  feConvolveMatrix.orderX.baseVal = -2.7;
+  assert_equals(feConvolveMatrix.orderX.baseVal, -2); // Negative values are allowed from SVG DOM, but should lead to an error when rendering (disable the filter)
 });
 </script>
diff --git a/tests/wpt/tests/tools/certs/cacert.key b/tests/wpt/tests/tools/certs/cacert.key
index bb982867aa6..d366a3ece53 100644
--- a/tests/wpt/tests/tools/certs/cacert.key
+++ b/tests/wpt/tests/tools/certs/cacert.key
@@ -1,30 +1,30 @@
 -----BEGIN ENCRYPTED PRIVATE KEY-----
-MIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQIQ5xxSiiavZsCAggA
-MAwGCCqGSIb3DQIJBQAwFAYIKoZIhvcNAwcECFKM9TnbYM+OBIIEyMH5TkEN57pt
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-ZuoUnBa9oZPtjcROq5CnZJXdrHqHPaG5CswoSBOXn0p/nv6KSeV8BRgdj1EvAGKh
-sOav2PbsaTESESnR4RP91k6hu24ZRUkfxA16L+BKb0/94ie4DErFKcZbilfI41Qv
-FQTpbPLZwOywCz/VD6kjYcRAr1q26Zhv4O80/0ZL7m/OBzu38PCUKwBAduZZyCCf
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-GK4PZtENPPcaWCy8hBxRN5+fVXjx4RpeJJQjqwnzuQiVOKkGrDw3MxLvIh6JCV4h
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-jTpvWej3SAvBkCqPZatuOPqxnctRU4/EZdg/N7eZBRmWdXLKvD5nwgHQoPdOiywT
-/eu2JuQzXQuVzVRnCAdDCvxl7/UkSkepEJbq1VAXo1rp4UTdVp6/xGOLJVdG4Yzc
-Y13Zx7Y5r0rh5QUI96jogFfor57uvtiMqnxT+QpRtGxJUaRs/6svLHwDHAZhbf2f
-jtn+St/c+Il1Xjpm7shQvo+pOUBG0DzcSyUXsQB58K+3Yj79M0Ff54unJQ3SCAbV
-zbq9OS69VRhkMveN3RGvgQDMIlgdH9DeDdB4YGEVEvujnqOBgcnrDmLE8e8tPAjZ
-90Uh1oqXdJgM5whaK3LbNs41kz482Orkv/P9L8e3MOjSuymdkgg3yJIx6ZuHNNKL
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+cVi8qrdCdvur4vqTzA6LPg==
 -----END ENCRYPTED PRIVATE KEY-----
diff --git a/tests/wpt/tests/tools/certs/cacert.pem b/tests/wpt/tests/tools/certs/cacert.pem
index e2ff4894e9e..b6a1506076a 100644
--- a/tests/wpt/tests/tools/certs/cacert.pem
+++ b/tests/wpt/tests/tools/certs/cacert.pem
@@ -1,125 +1,125 @@
 -----BEGIN CERTIFICATE-----
-MIIW5zCCFc+gAwIBAgIDCvpqMA0GCSqGSIb3DQEBCwUAMB0xGzAZBgNVBAMMEndl
-Yi1wbGF0Zm9ybS10ZXN0czAeFw0yNTA2MTIwMTE4MzhaFw0yNjA2MTIwMTE4Mzha
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 -----END CERTIFICATE-----
diff --git a/tests/wpt/tests/tools/certs/web-platform.test.key b/tests/wpt/tests/tools/certs/web-platform.test.key
index f11ffba2589..6deed4e510c 100644
--- a/tests/wpt/tests/tools/certs/web-platform.test.key
+++ b/tests/wpt/tests/tools/certs/web-platform.test.key
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
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-TU9j7XHQUlrT7xyZCn3hAVg1ZhuVtukxSj1Wu8dpJjccEjb2MBMgWw2TJsiKaHBT
-sFCevu+56UNq/YFm+8QP4ifGIeV/FCdUsgrhO6+TdRgFLrWcFjXi3CbGjb+PYhza
-gfmGAxeKXDS6s73sJbHEyZo=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 -----END PRIVATE KEY-----
diff --git a/tests/wpt/tests/tools/certs/web-platform.test.pem b/tests/wpt/tests/tools/certs/web-platform.test.pem
index b6f1c1c1cae..25d117d116e 100644
--- a/tests/wpt/tests/tools/certs/web-platform.test.pem
+++ b/tests/wpt/tests/tools/certs/web-platform.test.pem
@@ -1,133 +1,133 @@
 Certificate:
     Data:
         Version: 3 (0x2)
-        Serial Number: 719467 (0xafa6b)
+        Serial Number: 394093 (0x6036d)
         Signature Algorithm: sha256WithRSAEncryption
         Issuer: CN=web-platform-tests
         Validity
-            Not Before: Jun 12 01:18:38 2025 GMT
-            Not After : Jun 12 01:18:38 2026 GMT
+            Not Before: Jul 12 01:23:56 2025 GMT
+            Not After : Jul 12 01:23:56 2026 GMT
         Subject: CN=web-platform.test
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
                 Public-Key: (2048 bit)
                 Modulus:
-                    00:b2:a1:a8:29:7d:67:81:a9:4a:e7:69:31:58:65:
-                    4b:9c:f0:36:6a:0e:a9:a9:07:e8:ef:18:d8:fd:bd:
-                    4f:d7:39:cb:4d:1b:ed:17:58:8f:ee:09:af:69:f2:
-                    44:b5:ba:0b:b4:7a:8f:bc:e6:1b:ea:1d:0a:4b:95:
-                    ac:48:dd:ab:d9:a7:f9:79:1e:14:08:50:2f:93:8f:
-                    1b:57:35:b3:ba:6e:19:1b:85:26:f4:f3:6a:86:ff:
-                    cc:e1:09:8d:3c:98:9c:a8:6f:cc:f9:10:3f:a9:ec:
-                    50:58:61:b1:e6:ab:1d:72:c9:21:28:ea:ea:cb:8a:
-                    7e:3d:33:14:67:b3:0a:78:e8:9c:f1:d9:2d:ce:73:
-                    60:66:96:d5:fa:76:fb:20:3e:b7:71:c4:38:c2:5c:
-                    7f:81:0f:e6:3f:76:5e:69:d3:73:b1:a0:b8:e4:c4:
-                    c6:47:47:74:2d:dc:92:ee:f8:ca:68:00:4b:5e:c8:
-                    33:6a:3b:97:48:0d:72:bd:c9:07:8f:87:13:27:7f:
-                    81:60:d4:c0:0d:84:28:d2:d8:f4:ee:ed:fe:55:4c:
-                    59:a8:2d:3b:02:69:98:99:ba:6d:f3:36:44:ff:50:
-                    e9:c8:87:3f:24:9d:40:2a:86:d5:d9:d8:f6:c2:88:
-                    42:a6:56:a2:b7:93:f3:e3:f1:83:92:47:d9:42:08:
-                    46:bd
+                    00:ab:65:f4:63:e3:d3:73:2f:ac:53:7d:38:a6:85:
+                    ef:16:20:12:26:74:63:8e:1b:02:f2:b9:81:20:a3:
+                    fb:07:b6:d9:b1:e7:43:d6:32:0f:b2:77:6c:bc:30:
+                    23:d2:41:2e:50:c0:71:ed:08:99:e3:90:8f:e8:8b:
+                    ed:25:a9:b4:31:e8:41:22:5f:d8:ec:59:5a:34:48:
+                    47:49:67:e5:8c:46:d6:e8:a7:bf:29:01:9a:11:69:
+                    3c:d3:f6:f8:cc:5e:e7:65:31:17:29:44:34:58:dc:
+                    c3:72:5b:ed:52:dd:48:74:24:a4:86:aa:6b:02:df:
+                    d8:ed:b9:3d:a7:3e:48:0d:99:40:4a:11:e8:e2:c8:
+                    4e:19:ce:39:77:fe:7d:9e:ce:cf:b3:d0:af:74:59:
+                    f5:c2:c1:f3:18:46:ba:00:89:59:54:a4:8b:c0:1d:
+                    0d:db:d3:21:1f:e9:bf:1b:29:ae:e9:63:ea:5a:19:
+                    87:ed:49:ad:55:de:31:e8:54:e7:a1:d4:10:b5:89:
+                    91:36:86:72:ba:ca:d3:13:2a:74:e0:35:64:78:a7:
+                    2f:fb:d9:c3:88:d4:9c:8f:e8:83:36:2a:bc:de:30:
+                    2c:f7:da:ef:22:52:3f:a1:1a:28:08:1a:89:00:12:
+                    af:98:8d:4a:b6:84:0a:42:fe:ee:e6:7f:07:39:f5:
+                    2e:67
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Basic Constraints: 
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                D6:4A:B3:AC:80:DE:98:80:19:04:63:9C:B3:6A:0C:66:CF:B9:5F:D2
+                BE:66:12:D0:70:D8:F8:1D:38:32:3D:A8:0F:0C:50:F3:CC:F0:94:5F
             X509v3 Authority Key Identifier: 
-                4A:80:BC:64:60:3B:38:B6:0D:04:E2:D4:88:4B:60:76:1A:D9:A4:FB
+                40:11:85:99:42:5D:AA:E8:D9:FA:A7:D5:50:E2:21:9C:2B:78:B5:F5
             X509v3 Key Usage: 
                 Digital Signature, Non Repudiation, Key Encipherment
             X509v3 Extended Key Usage: 
                 TLS Web Server Authentication
             X509v3 Subject Alternative Name: 
-                DNS:web-platform.test, DNS:not-web-platform.test, DNS:www.web-platform.test, DNS:www1.web-platform.test, DNS:www2.web-platform.test, DNS:www.www.web-platform.test, DNS:www.not-web-platform.test, DNS:www2.www.web-platform.test, DNS:www1.www.web-platform.test, DNS:www2.not-web-platform.test, DNS:www1.not-web-platform.test, DNS:www.www1.web-platform.test, DNS:www.www2.web-platform.test, DNS:www2.www1.web-platform.test, DNS:www1.www2.web-platform.test, DNS:www1.www1.web-platform.test, DNS:www2.www2.web-platform.test, DNS:www.www.not-web-platform.test, DNS:www2.www.not-web-platform.test, DNS:www.www1.not-web-platform.test, DNS:xn--lve-6lad.web-platform.test, DNS:www1.www.not-web-platform.test, DNS:www.www2.not-web-platform.test, DNS:www1.www2.not-web-platform.test, DNS:www1.www1.not-web-platform.test, DNS:www2.www2.not-web-platform.test, DNS:www2.www1.not-web-platform.test, DNS:www.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.web-platform.test, DNS:xn--lve-6lad.www1.web-platform.test, DNS:www1.xn--lve-6lad.web-platform.test, DNS:www2.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www2.web-platform.test, DNS:www.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.not-web-platform.test, DNS:xn--lve-6lad.www2.not-web-platform.test, DNS:www1.xn--lve-6lad.not-web-platform.test, DNS:www2.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www1.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.not-web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test
+                DNS:web-platform.test, DNS:not-web-platform.test, DNS:www.web-platform.test, DNS:www2.web-platform.test, DNS:www1.web-platform.test, DNS:www.www.web-platform.test, DNS:www.not-web-platform.test, DNS:www2.not-web-platform.test, DNS:www.www2.web-platform.test, DNS:www.www1.web-platform.test, DNS:www2.www.web-platform.test, DNS:www1.not-web-platform.test, DNS:www1.www.web-platform.test, DNS:www2.www1.web-platform.test, DNS:www2.www2.web-platform.test, DNS:www1.www1.web-platform.test, DNS:www1.www2.web-platform.test, DNS:www.www.not-web-platform.test, DNS:www.www2.not-web-platform.test, DNS:www1.www.not-web-platform.test, DNS:www2.www.not-web-platform.test, DNS:xn--lve-6lad.web-platform.test, DNS:www.www1.not-web-platform.test, DNS:www2.www2.not-web-platform.test, DNS:www2.www1.not-web-platform.test, DNS:www1.www1.not-web-platform.test, DNS:www1.www2.not-web-platform.test, DNS:www.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.web-platform.test, DNS:www1.xn--lve-6lad.web-platform.test, DNS:www2.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www2.web-platform.test, DNS:xn--lve-6lad.www1.web-platform.test, DNS:www.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.not-web-platform.test, DNS:xn--lve-6lad.www1.not-web-platform.test, DNS:www2.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www2.not-web-platform.test, DNS:www1.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.not-web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test
     Signature Algorithm: sha256WithRSAEncryption
     Signature Value:
-        ad:fd:86:c0:90:e1:59:8a:1b:7d:50:fe:c8:cd:6a:26:ee:b6:
-        64:0b:46:92:88:10:2e:bc:8d:fd:9f:e9:72:95:56:3e:bc:4b:
-        a5:11:9b:ab:ec:d8:68:bc:0e:f3:0b:d0:ef:89:b3:d9:47:8a:
-        2f:dc:fa:84:0b:74:0e:64:e6:ae:2a:4e:46:76:0c:9c:04:86:
-        eb:ed:1b:d6:ca:0c:58:7b:82:a8:95:df:63:3d:0c:1b:89:91:
-        af:02:4c:d0:c9:4c:5d:96:e1:4a:8d:37:a8:81:54:9f:75:1c:
-        7d:f6:19:83:fe:b4:1c:1f:f3:5f:ae:5a:45:1c:30:99:04:14:
-        5f:10:55:50:8c:0a:da:61:ff:2b:f4:c7:18:fd:22:6f:3d:7d:
-        b8:1f:6c:de:1d:e6:be:ec:2d:72:48:4f:f5:5c:9d:eb:3b:b9:
-        c9:bb:55:d8:1a:c7:52:fd:9d:33:7d:74:29:7d:22:66:bf:76:
-        5e:dd:3d:9e:3b:a8:5d:f7:80:8a:37:d4:2e:6a:88:1e:41:ed:
-        a0:6e:e4:1d:d1:47:85:07:cf:ab:9f:66:b3:a6:35:5d:84:e3:
-        70:ac:95:f9:7a:48:fb:af:b9:93:72:5e:81:41:c0:c0:08:db:
-        eb:31:f7:3f:64:d2:5c:75:60:f7:8a:5c:f3:06:a8:42:e8:3c:
-        3d:c6:81:9b
+        e0:79:6c:12:03:b2:d2:99:6f:ad:e9:bb:7b:ee:c0:d7:86:eb:
+        29:58:93:0c:65:a9:32:00:f1:f2:cd:7f:b7:bf:9f:b0:87:2d:
+        6b:0c:45:83:12:fa:92:12:9d:15:af:60:b4:8f:ce:d6:28:3a:
+        3c:b3:70:56:dd:be:90:38:1b:83:98:d0:c1:c5:9c:32:4e:11:
+        44:87:8c:18:36:d1:c5:80:33:ff:99:34:2f:b4:a7:66:4c:82:
+        dc:84:b8:55:e4:7f:87:83:16:db:4c:3c:9c:45:3f:dd:49:0a:
+        3c:86:f1:1f:98:7f:00:47:91:84:fc:11:86:9d:8e:25:12:99:
+        ad:88:2f:b5:75:a4:d7:cc:c2:d3:cf:3c:09:23:1d:89:f9:16:
+        7f:1d:7c:b2:d3:21:b2:b1:df:21:6c:11:55:a9:96:92:78:80:
+        70:a4:1a:97:a7:b5:76:f3:e5:a6:b6:6a:e4:7e:9a:c4:05:33:
+        db:a0:3f:22:ef:1d:cc:b6:07:de:47:c5:f8:79:12:98:86:c7:
+        68:c4:e0:d8:45:27:e4:b9:c9:19:6c:1b:cf:ee:0c:0f:7a:a7:
+        9f:6a:43:e2:c4:1a:81:39:3f:3a:e7:85:ea:8d:e5:6b:3f:57:
+        02:50:4e:a3:2d:71:4f:c3:f4:6c:fd:ad:b6:71:3a:ed:f5:db:
+        67:98:7a:3f
 -----BEGIN CERTIFICATE-----
-MIIMsjCCC5qgAwIBAgIDCvprMA0GCSqGSIb3DQEBCwUAMB0xGzAZBgNVBAMMEndl
-Yi1wbGF0Zm9ybS10ZXN0czAeFw0yNTA2MTIwMTE4MzhaFw0yNjA2MTIwMTE4Mzha
+MIIMsjCCC5qgAwIBAgIDBgNtMA0GCSqGSIb3DQEBCwUAMB0xGzAZBgNVBAMMEndl
+Yi1wbGF0Zm9ybS10ZXN0czAeFw0yNTA3MTIwMTIzNTZaFw0yNjA3MTIwMTIzNTZa
 MBwxGjAYBgNVBAMMEXdlYi1wbGF0Zm9ybS50ZXN0MIIBIjANBgkqhkiG9w0BAQEF
-AAOCAQ8AMIIBCgKCAQEAsqGoKX1ngalK52kxWGVLnPA2ag6pqQfo7xjY/b1P1znL
-TRvtF1iP7gmvafJEtboLtHqPvOYb6h0KS5WsSN2r2af5eR4UCFAvk48bVzWzum4Z
-G4Um9PNqhv/M4QmNPJicqG/M+RA/qexQWGGx5qsdcskhKOrqy4p+PTMUZ7MKeOic
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 -----END CERTIFICATE-----
diff --git a/tests/wpt/tests/tools/docker/README.md b/tests/wpt/tests/tools/docker/README.md
index 9ec7a99cfff..088ea82cb7e 100644
--- a/tests/wpt/tests/tools/docker/README.md
+++ b/tests/wpt/tests/tools/docker/README.md
@@ -3,15 +3,13 @@ other tasks on Taskcluster. When any of the files in this directory change, the
 images must be updated as well. Doing this requires you to have write
 permissions to the repository.
 
-The tag for a new docker image is of the form
-`ghcr.io/web-platform-tests/wpt:${PREV_VERSION++}`.
-
 To update the docker image:
 
 * Run the workflow
   https://github.com/web-platform-tests/wpt/actions/workflows/docker.yml via the
-  GitHub UI.
+  GitHub UI. Use a number for the "Tag for the container image", the previous
+  version plus 1.
 
-* Update the following Taskcluster configurations to use the new image:
- - `.taskcluster.yml` (the decision task)
- - `tools/ci/tc/tasks/test.yml` (all the other tasks)
\ No newline at end of file
+* Update the following Taskcluster configurations to use the new image (refer to the image with `ghcr.io/web-platform-tests/wpt:${tag}`):
+    * `.taskcluster.yml` (the decision task)
+    * `tools/ci/tc/tasks/test.yml` (all the other tasks)
\ No newline at end of file
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/network.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/network.py
index 92db7228705..c8fb1ec4e92 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/network.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/network.py
@@ -293,3 +293,28 @@ class Network(BidiModule):
             params["contexts"] = contexts
 
         return params
+
+    @command
+    def get_data(
+            self,
+            request: str,
+            data_type: str,
+            collector: Optional[str] = None,
+            disown: Optional[bool] = None) -> Mapping[str, Any]:
+        params: MutableMapping[str, Any] = {
+            "request": request,
+            "dataType": data_type,
+        }
+
+        if collector is not None:
+            params["collector"] = collector
+
+        if disown is not None:
+            params["disown"] = disown
+
+        return params
+
+    @get_data.result
+    def _get_data(self, result: Mapping[str, Any]) -> Any:
+        assert result["bytes"] is not None
+        return result["bytes"]
diff --git a/tests/wpt/tests/tools/wptrunner/requirements.txt b/tests/wpt/tests/tools/wptrunner/requirements.txt
index bdb6820c629..a2d1852dba1 100644
--- a/tests/wpt/tests/tools/wptrunner/requirements.txt
+++ b/tests/wpt/tests/tools/wptrunner/requirements.txt
@@ -9,3 +9,4 @@ pillow==11.3.0; python_version >= '3.9'
 requests==2.32.3
 types-requests==2.32.0.20241016
 urllib3==2.2.2
+aioquic==1.2.0
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
index abbe55d4da3..67e4a428454 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
@@ -2,7 +2,7 @@
 # DO NOT EDIT MANUALLY.
 
 # tools/certs/web-platform.test.pem
-WPT_FINGERPRINT = '0BFjPjhH1jzif+9C8nnl+d94xL0i/PK6o1CJnqnHKps='
+WPT_FINGERPRINT = 'Npn6zU/1yv4wCd+wwl7Ch89WtS7fwqZzrgm89NOfKww='
 
 # signed-exchange/resources/127.0.0.1.sxg.pem
 SXG_WPT_FINGERPRINT = '0Rt4mT6SJXojEMHTnKnlJ/hBKMBcI4kteBlhR1eTTdk='
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
index 29f415a34a4..2324e043f30 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
@@ -896,7 +896,8 @@ class FirefoxBrowser(Browser):
                           "lsan_max_stack_depth": test.lsan_max_stack_depth,
                           "mozleak_allowed": self.leak_check and test.mozleak_allowed,
                           "mozleak_thresholds": self.leak_check and test.mozleak_threshold,
-                          "special_powers": self.specialpowers_path and test.url_base == "/_mozilla/"}
+                          "special_powers": self.specialpowers_path and test.url_base == "/_mozilla/",
+                          "testdriver": True if test.test_type == "testharness" else getattr(test, "testdriver", False)}
         return self._settings
 
     def start(self, group_metadata=None, **kwargs):
@@ -926,7 +927,8 @@ class FirefoxBrowser(Browser):
         return ExecutorBrowser, {"marionette_port": self.instance.marionette_port,
                                  "extensions": extensions,
                                  "supports_devtools": True,
-                                 "supports_window_resize": True}
+                                 "supports_window_resize": True,
+                                 "testdriver": self._settings["testdriver"]}
 
     def check_crash(self, process, test):
         return log_gecko_crashes(self.logger,
@@ -1056,7 +1058,8 @@ class FirefoxWdSpecBrowser(WebDriverBrowser):
                 "lsan_allowed": test.lsan_allowed,
                 "lsan_max_stack_depth": test.lsan_max_stack_depth,
                 "mozleak_allowed": self.leak_check and test.mozleak_allowed,
-                "mozleak_thresholds": self.leak_check and test.mozleak_threshold}
+                "mozleak_thresholds": self.leak_check and test.mozleak_threshold,
+                "testdriver": False}
 
     @property
     def port(self):
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
index 050a96477e0..4977e2372e1 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
@@ -11,7 +11,7 @@ from .base import (get_free_port,
                    cmd_arg,
                    browser_command)
 from ..executors.executormarionette import (MarionetteTestharnessExecutor,  # noqa: F401
-                                            MarionetteRefTestExecutor,  # noqa: F401
+                                            MarionetteRefTestExecutorAndroid,  # noqa: F401
                                             MarionetteCrashtestExecutor,  # noqa: F401
                                             MarionetteWdspecExecutor)  # noqa: F401
 from .base import (Browser,
@@ -30,7 +30,7 @@ __wptrunner__ = {"product": "firefox_android",
                  "browser": {None: "FirefoxAndroidBrowser",
                              "wdspec": "FirefoxAndroidWdSpecBrowser"},
                  "executor": {"testharness": "MarionetteTestharnessExecutor",
-                              "reftest": "MarionetteRefTestExecutor",
+                              "reftest": "MarionetteRefTestExecutorAndroid",
                               "crashtest": "MarionetteCrashtestExecutor",
                               "wdspec": "MarionetteWdspecExecutor"},
                  "browser_kwargs": "browser_kwargs",
@@ -271,7 +271,8 @@ class FirefoxAndroidBrowser(Browser):
                           "lsan_max_stack_depth": test.lsan_max_stack_depth,
                           "mozleak_allowed": self.leak_check and test.mozleak_allowed,
                           "mozleak_thresholds": self.leak_check and test.mozleak_threshold,
-                          "special_powers": self.specialpowers_path and test.url_base == "/_mozilla/"}
+                          "special_powers": self.specialpowers_path and test.url_base == "/_mozilla/",
+                          "testdriver": test.test_type == "testharness"}
         return self._settings
 
     def start(self, **kwargs):
@@ -370,7 +371,8 @@ class FirefoxAndroidBrowser(Browser):
                                  # that doesn't work on Android; instead they are in the profile
                                  "extensions": [],
                                  "supports_devtools": False,
-                                 "supports_window_resize": False}
+                                 "supports_window_resize": False,
+                                 "testdriver": self._settings["testdriver"]}
 
     def check_crash(self, process, test):
         if not os.environ.get("MINIDUMP_STACKWALK", "") and self.stackwalk_binary:
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
index 3284e6c8091..ced41b5b184 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
@@ -287,7 +287,7 @@ class ChromeDriverTestharnessExecutor(WebDriverTestharnessExecutor):
         self.sanitizer_enabled = sanitizer_enabled
         self.reuse_window = reuse_window
 
-    def get_or_create_test_window(self, protocol):
+    def create_test_window(self, protocol):
         test_window = self.protocol.testharness.persistent_test_window
         if test_window:
             try:
@@ -303,7 +303,7 @@ class ChromeDriverTestharnessExecutor(WebDriverTestharnessExecutor):
                 protocol.base.set_window(protocol.testharness.runner_handle)
                 test_window = self.protocol.testharness.persistent_test_window = None
         if not test_window:
-            test_window = super().get_or_create_test_window(protocol)
+            test_window = super().create_test_window(protocol)
             if self.reuse_window:
                 self.logger.info(f"Created new test window {test_window}")
             # Without `--reuse-window`, each testharness test always creates a
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
index 93b26a73c83..3607960b41e 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -27,27 +27,27 @@ from .protocol import (AccessibilityProtocolPart,
                        ActionSequenceProtocolPart,
                        AssertsProtocolPart,
                        BaseProtocolPart,
-                       TestharnessProtocolPart,
-                       PrefsProtocolPart,
-                       Protocol,
-                       StorageProtocolPart,
-                       SelectorProtocolPart,
                        ClickProtocolPart,
                        CookiesProtocolPart,
-                       SendKeysProtocolPart,
-                       TestDriverProtocolPart,
                        CoverageProtocolPart,
-                       GenerateTestReportProtocolPart,
-                       VirtualAuthenticatorProtocolPart,
-                       WindowProtocolPart,
-                       SetPermissionProtocolPart,
-                       PrintProtocolPart,
                        DebugProtocolPart,
-                       VirtualSensorProtocolPart,
                        DevicePostureProtocolPart,
-                       VirtualPressureSourceProtocolPart,
                        DisplayFeaturesProtocolPart,
+                       GenerateTestReportProtocolPart,
+                       PrefsProtocolPart,
+                       PrintProtocolPart,
+                       Protocol,
+                       SelectorProtocolPart,
+                       SendKeysProtocolPart,
+                       SetPermissionProtocolPart,
+                       StorageProtocolPart,
+                       TestDriverProtocolPart,
+                       TestharnessProtocolPart,
+                       VirtualAuthenticatorProtocolPart,
+                       VirtualPressureSourceProtocolPart,
+                       VirtualSensorProtocolPart,
                        WebExtensionsProtocolPart,
+                       WindowProtocolPart,
                        merge_dicts)
 
 
@@ -474,6 +474,22 @@ class MarionetteTestDriverProtocolPart(TestDriverProtocolPart):
     def setup(self):
         self.marionette = self.parent.marionette
 
+    def run(self, url, script_resume, test_window=None):
+        if test_window is None:
+            test_window = self.parent.base.current_window
+
+        handler = MarionetteCallbackHandler(self.logger, self.parent, test_window)
+        self.parent.marionette.navigate(url)
+        while True:
+            result = self.get_next_message(url, script_resume, test_window)
+            if result is None:
+                # This can happen if we get an content process crash
+                return None
+            done, rv = handler(result)
+            if done:
+                break
+        return rv
+
     def send_message(self, cmd_id, message_type, status, message=None):
         obj = {
             "cmd_id": cmd_id,
@@ -484,6 +500,10 @@ class MarionetteTestDriverProtocolPart(TestDriverProtocolPart):
             obj["message"] = str(message)
         self.parent.base.execute_script("window.postMessage(%s, '*')" % json.dumps(obj))
 
+    def get_next_message(self, url, script_resume, test_window):
+        return self.parent.base.execute_script(
+            script_resume, args=[strip_server(url)], asynchronous=True)
+
     def _switch_to_frame(self, index_or_elem):
         try:
             self.marionette.switch_to_frame(index_or_elem)
@@ -729,6 +749,7 @@ class MarionetteVirtualPressureSourceProtocolPart(VirtualPressureSourceProtocolP
     def remove_virtual_pressure_source(self, source_type):
         raise NotImplementedError("remove_virtual_pressure_source not yet implemented")
 
+
 class MarionetteDisplayFeaturesProtocolPart(DisplayFeaturesProtocolPart):
     def setup(self):
         self.marionette = self.parent.marionette
@@ -846,7 +867,7 @@ class MarionetteProtocol(Protocol):
         return True
 
     def on_environment_change(self, old_environment, new_environment):
-        #Unset all the old prefs
+        # Unset all the old prefs
         for name in old_environment.get("prefs", {}).keys():
             value = self.executor.original_pref_values[name]
             if value is None:
@@ -1021,17 +1042,7 @@ class MarionetteTestharnessExecutor(TestharnessExecutor):
         if self.debug_test and self.browser.supports_devtools:
             self.protocol.debug.load_devtools()
 
-        handler = MarionetteCallbackHandler(self.logger, protocol, test_window)
-        protocol.marionette.navigate(url)
-        while True:
-            result = protocol.base.execute_script(
-                self.script_resume, args=[strip_server(url)], asynchronous=True)
-            if result is None:
-                # This can happen if we get an content process crash
-                return None
-            done, rv = handler(result)
-            if done:
-                break
+        rv = protocol.testdriver.run(url, self.script_resume, test_window=test_window)
 
         if self.protocol.coverage.is_enabled:
             self.protocol.coverage.dump()
@@ -1041,6 +1052,7 @@ class MarionetteTestharnessExecutor(TestharnessExecutor):
 
 class MarionetteRefTestExecutor(RefTestExecutor):
     is_print = False
+    supports_testdriver = True
 
     def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  screenshot_cache=None, close_after_done=True,
@@ -1059,18 +1071,11 @@ class MarionetteRefTestExecutor(RefTestExecutor):
         self.protocol = MarionetteProtocol(self, browser, capabilities,
                                            timeout_multiplier, kwargs["e10s"],
                                            ccov)
-        self.implementation = self.get_implementation(reftest_internal)
-        self.implementation_kwargs = {}
-        if reftest_internal:
-            self.implementation_kwargs["screenshot"] = reftest_screenshot
-            self.implementation_kwargs["chrome_scope"] = False
-            # Older versions of Gecko require switching to chrome scope to run refests
-            if browser_version is not None:
-                try:
-                    major_version = int(browser_version.split(".")[0])
-                    self.implementation_kwargs["chrome_scope"] = major_version < 82
-                except ValueError:
-                    pass
+        implementation, implementation_kwargs = self.get_implementation(reftest_internal,
+                                                                        reftest_screenshot,
+                                                                        browser_version)
+        self.implementation = implementation
+        self.implementation_kwargs = implementation_kwargs
         self.close_after_done = close_after_done
         self.has_window = False
         self.original_pref_values = {}
@@ -1083,9 +1088,22 @@ class MarionetteRefTestExecutor(RefTestExecutor):
         with open(os.path.join(here, "test-wait.js")) as f:
             self.wait_script = f.read() % {"classname": "reftest-wait"}
 
-    def get_implementation(self, reftest_internal):
-        return (InternalRefTestImplementation if reftest_internal
-                else RefTestImplementation)(self)
+    def get_implementation(self, reftest_internal, reftest_screenshot, browser_version):
+        kwargs = {}
+        if reftest_internal and not self.browser.testdriver:
+            cls = InternalRefTestImplementation
+            kwargs["screenshot"] = reftest_screenshot
+            kwargs["chrome_scope"] = False
+            # Older versions of Gecko require switching to chrome scope to run refests
+            if browser_version is not None:
+                try:
+                    major_version = int(browser_version.split(".")[0])
+                    kwargs["chrome_scope"] = major_version < 82
+                except ValueError:
+                    pass
+        else:
+            cls = RefTestImplementation
+        return cls(self), kwargs
 
     def setup(self, runner, protocol=None):
         super().setup(runner, protocol)
@@ -1179,9 +1197,7 @@ class MarionetteRefTestExecutor(RefTestExecutor):
                                      self.extra_timeout).run()
 
     def _screenshot(self, protocol, url, timeout):
-        protocol.marionette.navigate(url)
-
-        protocol.base.execute_script(self.wait_script, asynchronous=True)
+        protocol.testdriver.run(url, self.wait_script)
 
         screenshot = protocol.marionette.screenshot(full=False)
         # strip off the data:img/png, part of the url
@@ -1191,6 +1207,13 @@ class MarionetteRefTestExecutor(RefTestExecutor):
         return screenshot
 
 
+class MarionetteRefTestExecutorAndroid(MarionetteRefTestExecutor):
+    # Android doesn't support window resize, so we can't use the external reftest implementation.
+    # That is only used for testdriver so we have a version that will skip those tests specifically
+    # for Android.
+    supports_testdriver = False
+
+
 class InternalRefTestImplementation(RefTestImplementation):
     def __init__(self, executor):
         self.timeout_multiplier = executor.timeout_multiplier
@@ -1257,6 +1280,8 @@ class InternalRefTestImplementation(RefTestImplementation):
 
 
 class MarionetteCrashtestExecutor(CrashtestExecutor):
+    supports_testdriver = True
+
     def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  debug_info=None, capabilities=None, debug=False,
                  ccov=False, **kwargs):
@@ -1315,8 +1340,7 @@ class MarionetteCrashtestExecutor(CrashtestExecutor):
         if self.protocol.coverage.is_enabled:
             self.protocol.coverage.reset()
 
-        protocol.base.load(url)
-        protocol.base.execute_script(self.wait_script, asynchronous=True)
+        protocol.testdriver.run(url, self.wait_script)
 
         if self.protocol.coverage.is_enabled:
             self.protocol.coverage.dump()
@@ -1327,6 +1351,7 @@ class MarionetteCrashtestExecutor(CrashtestExecutor):
 
 class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
     is_print = True
+    supports_testdriver = False
 
     def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  screenshot_cache=None, close_after_done=True,
@@ -1355,10 +1380,6 @@ class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
         if not isinstance(self.implementation, InternalRefTestImplementation):
             self.protocol.pdf_print.load_runner()
 
-    def get_implementation(self, reftest_internal):
-        return (InternalRefTestImplementation if reftest_internal
-                else RefTestImplementation)(self)
-
     def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7140
         assert dpi is None
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
index dbf985cf3fc..e4127f130ba 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
@@ -592,6 +592,107 @@ class WebDriverTestDriverProtocolPart(TestDriverProtocolPart):
     def setup(self):
         self.webdriver = self.parent.webdriver
 
+    def run(self, url, script_resume, test_window=None):
+        # If protocol implements `bidi_events`, remove all the existing subscriptions.
+        if hasattr(self.parent, 'bidi_events'):
+            # Use protocol loop to run the async cleanup.
+            self.parent.loop.run_until_complete(self.parent.bidi_events.unsubscribe_all())
+
+        if test_window is None:
+            test_window = self.parent.base.current_window
+
+        # Exceptions occurred outside the main loop.
+        unexpected_exceptions = []
+
+        if hasattr(self.parent, 'bidi_events'):
+            # If protocol implements `bidi_events`, forward all the events to test_driver.
+            async def process_bidi_event(method, params):
+                try:
+                    self.logger.debug(f"Received bidi event: {method}, {params}")
+                    if hasattr(self.parent, 'bidi_browsing_context') and method == "browsingContext.userPromptOpened" and \
+                            params["context"] == test_window:
+                        # User prompts of the test window are handled separately. In classic
+                        # implementation, this user prompt always causes an exception when
+                        # `protocol.testdriver.get_next_message()` is called. In BiDi it's not the
+                        # case, as the BiDi protocol allows sending commands even with the user
+                        # prompt opened. However, the user prompt can block the testdriver JS
+                        # execution and cause a dead loop. To overcome this issue, the user prompt
+                        # of the test window is always dismissed and the test is failing.
+                        try:
+                            await self.parent.bidi_browsing_context.handle_user_prompt(params["context"])
+                        except Exception as e:
+                            if "no such alert" in str(e):
+                                # The user prompt is already dismissed by WebDriver BiDi server. Ignore the exception.
+                                pass
+                            else:
+                                # The exception is unexpected. Re-raising it to handle it in the main loop.
+                                raise e
+                        raise Exception("Unexpected user prompt in test window: %s" % params)
+                    else:
+                        self.send_message(-1, "event", method, json.dumps({
+                            "params": params,
+                            "method": method}))
+                except Exception as e:
+                    # As the event listener is async, the exceptions should be added to the list to be processed in the
+                    # main loop.
+                    self.logger.error("BiDi event processing failed: %s" % e)
+                    unexpected_exceptions.append(e)
+
+            self.parent.bidi_events.add_event_listener(None, process_bidi_event)
+            self.parent.loop.run_until_complete(self.parent.bidi_events.subscribe(['browsingContext.userPromptOpened'], None))
+
+        # If possible, support async actions.
+        if hasattr(self.parent, 'loop'):
+            handler = WebDriverAsyncCallbackHandler(self.logger, self.parent, test_window, self.parent.loop)
+        else:
+            handler = WebDriverCallbackHandler(self.logger, self.parent, test_window)
+
+        self.webdriver.url = url
+
+        while True:
+            if len(unexpected_exceptions) > 0:
+                # TODO: what to do if there are more then 1 unexpected exceptions?
+                raise unexpected_exceptions[0]
+
+            test_driver_message = self.get_next_message(url, script_resume, test_window)
+            self.logger.debug("Receive message from testdriver: %s" % test_driver_message)
+
+            # As of 2019-03-29, WebDriver does not define expected behavior for
+            # cases where the browser crashes during script execution:
+            #
+            # https://github.com/w3c/webdriver/issues/1308
+            if not isinstance(test_driver_message, list) or len(test_driver_message) != 3:
+                try:
+                    is_alive = self.parent.is_alive()
+                except webdriver_error.WebDriverException:
+                    is_alive = False
+                if not is_alive:
+                    raise Exception("Browser crashed during script execution.")
+
+            # In case of WebDriver Classic, a user prompt created after starting execution of the resume script will
+            # resolve the script with `null` [1, 2]. In that case, cycle this event loop and handle the prompt the next
+            # time the resume script executes.
+            #
+            # [1]: Step 5.3 of https://www.w3.org/TR/webdriver/#execute-async-script
+            # [2]: https://www.w3.org/TR/webdriver/#dfn-execute-a-function-body
+            if test_driver_message is None:
+                continue
+
+            done, rv = handler(test_driver_message)
+            if done:
+                break
+
+        # If protocol implements `bidi_events`, remove all the existing subscriptions.
+        if hasattr(self.parent, 'bidi_events'):
+            # Use protocol loop to run the async cleanup.
+            self.parent.loop.run_until_complete(self.parent.bidi_events.unsubscribe_all())
+
+        if len(unexpected_exceptions) > 0:
+            # TODO: what to do if there are more then 1 unexpected exceptions?
+            raise unexpected_exceptions[0]
+
+        return rv
+
     def get_next_message(self, url, script_resume, test_window):
         if hasattr(self.parent, "bidi_script"):
             # If `bidi_script` is available, the messages can be handled via BiDi.
@@ -1012,115 +1113,7 @@ class WebDriverRun(TimedRunner):
             self.result_flag.set()
 
 
-class TestDriverExecutorMixin:
-    def __init__(self, script_resume: str):
-        self.script_resume = script_resume
-
-    def run_testdriver(self, protocol, url, timeout):
-        # If protocol implements `bidi_events`, remove all the existing subscriptions.
-        if hasattr(protocol, 'bidi_events'):
-            # Use protocol loop to run the async cleanup.
-            protocol.loop.run_until_complete(protocol.bidi_events.unsubscribe_all())
-
-        test_window = self.get_or_create_test_window(protocol)
-        # Exceptions occurred outside the main loop.
-        unexpected_exceptions = []
-
-        if hasattr(protocol, 'bidi_events'):
-            # If protocol implements `bidi_events`, forward all the events to test_driver.
-            async def process_bidi_event(method, params):
-                try:
-                    self.logger.debug(f"Received bidi event: {method}, {params}")
-                    if hasattr(protocol, 'bidi_browsing_context') and method == "browsingContext.userPromptOpened" and \
-                            params["context"] == test_window:
-                        # User prompts of the test window are handled separately. In classic
-                        # implementation, this user prompt always causes an exception when
-                        # `protocol.testdriver.get_next_message()` is called. In BiDi it's not the
-                        # case, as the BiDi protocol allows sending commands even with the user
-                        # prompt opened. However, the user prompt can block the testdriver JS
-                        # execution and cause a dead loop. To overcome this issue, the user prompt
-                        # of the test window is always dismissed and the test is failing.
-                        try:
-                            await protocol.bidi_browsing_context.handle_user_prompt(params["context"])
-                        except Exception as e:
-                            if "no such alert" in str(e):
-                                # The user prompt is already dismissed by WebDriver BiDi server. Ignore the exception.
-                                pass
-                            else:
-                                # The exception is unexpected. Re-raising it to handle it in the main loop.
-                                raise e
-                        raise Exception("Unexpected user prompt in test window: %s" % params)
-                    else:
-                        protocol.testdriver.send_message(-1, "event", method, json.dumps({
-                            "params": params,
-                            "method": method}))
-                except Exception as e:
-                    # As the event listener is async, the exceptions should be added to the list to be processed in the
-                    # main loop.
-                    self.logger.error("BiDi event processing failed: %s" % e)
-                    unexpected_exceptions.append(e)
-
-            protocol.bidi_events.add_event_listener(None, process_bidi_event)
-            protocol.loop.run_until_complete(protocol.bidi_events.subscribe(['browsingContext.userPromptOpened'], None))
-
-        # If possible, support async actions.
-        if hasattr(protocol, 'loop'):
-            handler = WebDriverAsyncCallbackHandler(self.logger, protocol, test_window, protocol.loop)
-        else:
-            handler = WebDriverCallbackHandler(self.logger, protocol, test_window)
-
-        protocol.webdriver.url = url
-
-        while True:
-            if len(unexpected_exceptions) > 0:
-                # TODO: what to do if there are more then 1 unexpected exceptions?
-                raise unexpected_exceptions[0]
-
-            test_driver_message = protocol.testdriver.get_next_message(url, self.script_resume,
-                                                                       test_window)
-            self.logger.debug("Receive message from testdriver: %s" % test_driver_message)
-
-            # As of 2019-03-29, WebDriver does not define expected behavior for
-            # cases where the browser crashes during script execution:
-            #
-            # https://github.com/w3c/webdriver/issues/1308
-            if not isinstance(test_driver_message, list) or len(test_driver_message) != 3:
-                try:
-                    is_alive = protocol.is_alive()
-                except webdriver_error.WebDriverException:
-                    is_alive = False
-                if not is_alive:
-                    raise Exception("Browser crashed during script execution.")
-
-            # In case of WebDriver Classic, a user prompt created after starting execution of the resume script will
-            # resolve the script with `null` [1, 2]. In that case, cycle this event loop and handle the prompt the next
-            # time the resume script executes.
-            #
-            # [1]: Step 5.3 of https://www.w3.org/TR/webdriver/#execute-async-script
-            # [2]: https://www.w3.org/TR/webdriver/#dfn-execute-a-function-body
-            if test_driver_message is None:
-                continue
-
-            done, rv = handler(test_driver_message)
-            if done:
-                break
-
-        # If protocol implements `bidi_events`, remove all the existing subscriptions.
-        if hasattr(protocol, 'bidi_events'):
-            # Use protocol loop to run the async cleanup.
-            protocol.loop.run_until_complete(protocol.bidi_events.unsubscribe_all())
-
-        if len(unexpected_exceptions) > 0:
-            # TODO: what to do if there are more then 1 unexpected exceptions?
-            raise unexpected_exceptions[0]
-
-        return rv
-
-    def get_or_create_test_window(self, protocol):
-        return protocol.base.current_window
-
-
-class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin):
+class WebDriverTestharnessExecutor(TestharnessExecutor):
     supports_testdriver = True
     protocol_cls = WebDriverProtocol
 
@@ -1133,8 +1126,7 @@ class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin)
                                      debug_info=debug_info)
         self.protocol = self.protocol_cls(self, browser, capabilities)
         with open(os.path.join(here, "testharness_webdriver_resume.js")) as f:
-            script_resume = f.read()
-        TestDriverExecutorMixin.__init__(self, script_resume)
+            self.script_resume = f.read()
         with open(os.path.join(here, "window-loaded.js")) as f:
             self.window_loaded_script = f.read()
 
@@ -1177,6 +1169,8 @@ class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin)
             # The previous test may not have closed its old windows (if something
             # went wrong or if cleanup_after_test was False), so clean up here.
             protocol.testharness.close_old_windows()
+
+            test_window = self.create_test_window(protocol)
             # Restore the window to the initial position
             if self.initial_window_size:
                 try:
@@ -1184,7 +1178,7 @@ class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin)
                 except Exception:
                     pass
 
-            raw_results = self.run_testdriver(protocol, url, timeout)
+            raw_results = protocol.testdriver.run(url, self.script_resume, test_window)
             extra = {}
             if counters := self._check_for_leaks(protocol):
                 extra["leak_counters"] = counters
@@ -1213,7 +1207,7 @@ class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin)
         finally:
             protocol.base.set_window(protocol.testharness.runner_handle)
 
-    def get_or_create_test_window(self, protocol):
+    def create_test_window(self, protocol):
         test_window = protocol.base.create_window()
         protocol.base.set_window(test_window)
         # Wait until about:blank has been loaded
@@ -1221,7 +1215,7 @@ class WebDriverTestharnessExecutor(TestharnessExecutor, TestDriverExecutorMixin)
         return test_window
 
 
-class WebDriverRefTestExecutor(RefTestExecutor, TestDriverExecutorMixin):
+class WebDriverRefTestExecutor(RefTestExecutor):
     protocol_cls = WebDriverProtocol
     supports_testdriver = True
 
@@ -1247,8 +1241,7 @@ class WebDriverRefTestExecutor(RefTestExecutor, TestDriverExecutorMixin):
         self.debug_test = debug_test
 
         with open(os.path.join(here, "test-wait.js")) as f:
-            wait_script = f.read() % {"classname": "reftest-wait"}
-        TestDriverExecutorMixin.__init__(self, wait_script)
+            self.wait_script = f.read() % {"classname": "reftest-wait"}
 
     def reset(self):
         self.implementation.reset()
@@ -1295,7 +1288,7 @@ class WebDriverRefTestExecutor(RefTestExecutor, TestDriverExecutorMixin):
     def _screenshot(self, protocol, url, timeout):
         # There's nothing we want from the "complete" message, so discard the
         # return value.
-        self.run_testdriver(protocol, url, timeout)
+        protocol.testdriver.run(url, self.wait_script)
 
         screenshot = self.protocol.webdriver.screenshot()
         if screenshot is None:
@@ -1342,7 +1335,7 @@ class WebDriverPrintRefTestExecutor(WebDriverRefTestExecutor):
     def _render(self, protocol, url, timeout):
         # There's nothing we want from the "complete" message, so discard the
         # return value.
-        self.run_testdriver(protocol, url, timeout)
+        protocol.testdriver.run(url, self.wait_script)
 
         pdf = protocol.pdf_print.render_as_pdf(*self.viewport_size)
         screenshots = protocol.pdf_print.pdf_to_png(pdf, self.page_ranges)
@@ -1354,7 +1347,7 @@ class WebDriverPrintRefTestExecutor(WebDriverRefTestExecutor):
         return screenshots
 
 
-class WebDriverCrashtestExecutor(CrashtestExecutor, TestDriverExecutorMixin):
+class WebDriverCrashtestExecutor(CrashtestExecutor):
     protocol_cls = WebDriverProtocol
     supports_testdriver = True
 
@@ -1374,8 +1367,7 @@ class WebDriverCrashtestExecutor(CrashtestExecutor, TestDriverExecutorMixin):
                                           capabilities=capabilities)
 
         with open(os.path.join(here, "test-wait.js")) as f:
-            wait_script = f.read() % {"classname": "test-wait"}
-        TestDriverExecutorMixin.__init__(self, wait_script)
+            self.wait_script = f.read() % {"classname": "test-wait"}
 
     def do_test(self, test):
         timeout = (test.timeout * self.timeout_multiplier if self.debug_info is None
@@ -1396,7 +1388,7 @@ class WebDriverCrashtestExecutor(CrashtestExecutor, TestDriverExecutorMixin):
     def do_crashtest(self, protocol, url, timeout):
         # There's nothing we want from the "complete" message, so discard the
         # return value.
-        self.run_testdriver(protocol, url, timeout)
+        protocol.testdriver.run(url, self.wait_script)
         result = {"status": "PASS", "message": None}
         if (leak_part := getattr(protocol, "leak", None)) and (counters := leak_part.check()):
             result["extra"] = {"leak_counters": counters}
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/protocol.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/protocol.py
index d745b316b66..8af313d27d6 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/protocol.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/protocol.py
@@ -760,6 +760,29 @@ class TestDriverProtocolPart(ProtocolPart):
 
     name = "testdriver"
 
+    @abstractmethod
+    def run(self, url, script_resume, test_window=None):
+        """Run a test using the testdriver protocol
+
+        :param str url: URL of the test
+        :param str script_resume: Script to run implementing the browser
+                                  side of the protocol
+        :param test_window: Optional test window handle, otherwise the
+                            current active window is used.
+        :returns: Test result data"""
+        pass
+
+    @abstractmethod
+    def get_next_message(self, url, script_resume, test_window):
+        """Get the next message from the browser
+
+        :param str url: URL of the current test
+        :param str script_resume: Script implementing the browsr
+                                  side of the protocol.
+        :param test_window: Window handle of the test window
+        :returns: Testdriver message dict"""
+        pass
+
     @abstractmethod
     def send_message(self, cmd_id, message_type, status, message=None):
         """Send a testdriver message to the browser.
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py b/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
index be310944fd8..cc81b735113 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
@@ -343,7 +343,7 @@ class TestRunnerManager(threading.Thread):
                  pause_after_test=False, pause_on_unexpected=False,
                  restart_on_unexpected=True, debug_info=None,
                  capture_stdio=True, restart_on_new_group=True, recording=None,
-                 max_restarts=5, max_restart_backoff=0):
+                 max_restarts=5, max_restart_backoff=0, update_status_on_crash=True):
         """Thread that owns a single TestRunner process and any processes required
         by the TestRunner (e.g. the Firefox binary).
 
@@ -381,6 +381,7 @@ class TestRunnerManager(threading.Thread):
         self.restart_on_new_group = restart_on_new_group
         self.max_restarts = max_restarts
         self.max_restart_backoff = max_restart_backoff
+        self.update_status_on_crash = update_status_on_crash
 
         assert recording is not None
         self.recording = recording
@@ -797,11 +798,11 @@ class TestRunnerManager(threading.Thread):
         status = file_result.status
 
         if self.browser.check_crash(test.id) and status != "CRASH":
-            if test.test_type in ["crashtest", "wdspec"] or status == "EXTERNAL-TIMEOUT":
+            if self.update_status_on_crash:
                 self.logger.info("Found a crash dump file; changing status to CRASH")
                 status = "CRASH"
             else:
-                self.logger.warning(f"Found a crash dump; should change status from {status} to CRASH but this causes instability")
+                self.logger.warning(f"Found a crash dump; but keeping status {status}")
 
         # We have a couple of status codes that are used internally, but not exposed to the
         # user. These are used to indicate that some possibly-broken state was reached
@@ -1047,7 +1048,8 @@ class ManagerGroup:
                  restart_on_new_group=True,
                  recording=None,
                  max_restarts=5,
-                 max_restart_backoff=0):
+                 max_restart_backoff=0,
+                 update_status_on_crash=False):
         self.suite_name = suite_name
         self.test_queue_builder = test_queue_builder
         self.test_implementations = test_implementations
@@ -1063,6 +1065,7 @@ class ManagerGroup:
         assert recording is not None
         self.max_restarts = max_restarts
         self.max_restart_backoff = max_restart_backoff
+        self.update_status_on_crash = update_status_on_crash
 
         self.pool = set()
         self.stop_flag = None
@@ -1096,7 +1099,8 @@ class ManagerGroup:
                                         self.restart_on_new_group,
                                         recording=self.recording,
                                         max_restarts=self.max_restarts,
-                                        max_restart_backoff=self.max_restart_backoff)
+                                        max_restart_backoff=self.max_restart_backoff,
+                                        update_status_on_crash=self.update_status_on_crash)
             manager.start()
             self.pool.add(manager)
         self.wait()
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py b/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
index b602c007715..81e9d509bf4 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
@@ -276,6 +276,11 @@ scheme host and port.""")
     config_group.add_argument("--no-suppress-handler-traceback", action="store_false",
                               dest="supress_handler_traceback",
                               help="Write the stacktrace for exceptions in server handlers")
+    config_group.add_argument("--update-status-on-crash", action="store_true", default=None,
+                              help="Update test status to CRASH if a crash dump is found")
+    config_group.add_argument("--no-update-status-on-crash", dest="update_status_on_crash",
+                              action="store_false",
+                              help="Don't update test status to CRASH if a crash dump is found")
     config_group.add_argument("--ws-extra", action="append",
                               help="Extra paths containing websockets handlers")
 
@@ -636,6 +641,9 @@ def check_args(kwargs):
             print("Binary path %s does not exist" % kwargs["binary"], file=sys.stderr)
             sys.exit(1)
 
+    if kwargs["update_status_on_crash"] is None:
+        kwargs["update_status_on_crash"] = True
+
     if kwargs["ssl_type"] is None:
         if None not in (kwargs["ca_cert_path"], kwargs["host_cert_path"], kwargs["host_key_path"]):
             kwargs["ssl_type"] = "pregenerated"
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/wptrunner.py b/tests/wpt/tests/tools/wptrunner/wptrunner/wptrunner.py
index 92bb861ff58..65b80a62937 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/wptrunner.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/wptrunner.py
@@ -333,6 +333,7 @@ def run_test_iteration(test_status, test_loader, test_queue_builder,
                           recording=recording,
                           max_restarts=kwargs["max_restarts"],
                           max_restart_backoff=kwargs["max_restart_backoff"],
+                          update_status_on_crash=kwargs["update_status_on_crash"]
                           ) as manager_group:
             try:
                 handle_interrupt_signals()
diff --git a/tests/wpt/tests/webaudio/resources/audit-util.js b/tests/wpt/tests/webaudio/resources/audit-util.js
index 544bd202ee7..4e574a64b1a 100644
--- a/tests/wpt/tests/webaudio/resources/audit-util.js
+++ b/tests/wpt/tests/webaudio/resources/audit-util.js
@@ -315,3 +315,20 @@ function assert_close_to_array(actual, expected, epsilon, desc) {
         `${desc}[${i}] |${actual[i]} - ${expected[i]}| = ${diff} > ${epsilon}`);
   }
 }
+
+/**
+ * Asserts that all elements of an array are (approximately) equal to a value.
+ *
+ * @param {!Array<number>} array - The array to be checked.
+ * @param {number} constantValue - The expected constant value.
+ * @param {string} message - Description used for assertion failures.
+ * @param {number=} epsilon - Allowed tolerance for floating-point comparison.
+ * Default to 1e-7
+ */
+function assert_array_constant_value(
+    array, constantValue, message, epsilon = 1e-7) {
+      for (let i = 0; i < array.length; ++i) {
+        assert_approx_equals(
+            array[i], constantValue, epsilon, `${message} sample[${i}]`);
+      }
+}
diff --git a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html
index b5555b0137a..4586ffebf64 100644
--- a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html
+++ b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-close.html
@@ -1,17 +1,13 @@
-<!doctype html>
+<!DOCTYPE html>
 <html>
   <head>
     <title>Test AudioParam events very close in time</title>
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
     <script src="/webaudio/resources/audit-util.js"></script>
-    <script src="/webaudio/resources/audit.js"></script>
   </head>
-
   <body>
     <script>
-      const audit = Audit.createTaskRunner();
-
       // Largest sample rate that is required to be supported and is a power of
       // two, to eliminate round-off as much as possible.
       const sampleRate = 65536;
@@ -27,135 +23,137 @@
       // epsneg is the smallest x such that 1 - x != 1
       const epsneg = 5.551115123125784e-17;
 
-      audit.define(
-          {label: 'no-nan', description: 'NaN does not occur'},
-          (task, should) => {
-            const context = new OfflineAudioContext({
-              numberOfChannels: 1,
-              sampleRate: sampleRate,
-              length: testFrames
-            });
+      promise_test(async t => {
+        const context = new OfflineAudioContext({
+          numberOfChannels: 1,
+          sampleRate,
+          length: testFrames
+        });
 
-            const src0 = new ConstantSourceNode(context, {offset: 0});
+        const src0 = new ConstantSourceNode(context, {offset: 0});
 
-            // This should always succeed.  We just want to print out a message
-            // that |src0| is a constant source node for the following
-            // processing.
-            should(src0, 'src0 = new ConstantSourceNode(context, {offset: 0})')
-                .beEqualTo(src0);
+        // This should always succeed.  We just want to print out a message
+        // that |src0| is a constant source node for the following
+        // processing.
+        assert_equals(
+            src0, src0,
+            'src0 = new ConstantSourceNode(context, {offset: 0}) ' +
+                'should succeed');
 
-            src0.connect(context.destination);
+        src0.connect(context.destination);
 
-            // Values for the first event (setValue).  |time1| MUST be 0.
-            const time1 = 0;
-            const value1 = 10;
+        // Values for the first event (setValue).  |time1| MUST be 0.
+        const time1 = 0;
+        const value1 = 10;
 
-            // Values for the second event (linearRamp).  |value2| must be huge,
-            // and |time2| must be small enough that 1/|time2| overflows a
-            // single float. This value is the least positive single float.
-            const value2 = floatMax;
-            const time2 = 1.401298464324817e-45;
+        // Values for the second event (linearRamp).  |value2| must be huge,
+        // and |time2| must be small enough that 1/|time2| overflows a
+        // single float. This value is the least positive single float.
+        const time2 = 1.401298464324817e-45;
+        const value2 = floatMax;
 
-            // These should always succeed; the messages are just informational
-            // to show the events that we scheduled.
-            should(
-                src0.offset.setValueAtTime(value1, time1),
-                `src0.offset.setValueAtTime(${value1}, ${time1})`)
-                .beEqualTo(src0.offset);
-            should(
-                src0.offset.linearRampToValueAtTime(value2, time2),
-                `src0.offset.linearRampToValueAtTime(${value2}, ${time2})`)
-                .beEqualTo(src0.offset);
+        // These should always succeed; the messages are just informational
+        // to show the events that we scheduled.
+        assert_equals(
+            src0.offset.setValueAtTime(value1, time1),
+            src0.offset,
+            `src0.offset.setValueAtTime(${value1}, ${time1}) should ` +
+                `return AudioParam`);
+        assert_equals(
+            src0.offset.linearRampToValueAtTime(value2, time2),
+            src0.offset,
+            `src0.offset.linearRampToValueAtTime(${value2}, ${time2}) should ` +
+                `return AudioParam`);
 
-            src0.start();
+        src0.start();
 
-            context.startRendering()
-                .then(buffer => {
-                  const output = buffer.getChannelData(0);
+        const renderedBuffer = await context.startRendering();
+        const output = renderedBuffer.getChannelData(0);
 
-                  // Since time1 = 0, the output at frame 0 MUST be value1.
-                  should(output[0], 'output[0]').beEqualTo(value1);
+        // Since time1 = 0, the output at frame 0 MUST be value1.
+        assert_equals(
+            output[0], value1, 'Frame 0 should equal initial value set');
 
-                  // Since time2 < 1, output from frame 1 and later must be a
-                  // constant.
-                  should(output.slice(1), 'output[1]')
-                      .beConstantValueOf(value2);
-                })
-                .then(() => task.done());
-          });
+        // Since time2 < 1, output from frame 1 and later must be a
+        // constant.
+        assert_array_constant_value(
+            output.slice(1),
+            value2,
+            'Frames 1+ should equal ramp target value');
+      }, 'NaN should not occur during extreme linearRampToValueAtTime events');
 
-      audit.define(
-          {label: 'interpolation', description: 'Interpolation of linear ramp'},
-          (task, should) => {
-            const context = new OfflineAudioContext({
-              numberOfChannels: 1,
-              sampleRate: sampleRate,
-              length: testFrames
-            });
+      promise_test(async t => {
+        const context = new OfflineAudioContext({
+          numberOfChannels: 1,
+          sampleRate,
+          length: testFrames
+        });
 
-            const src1 = new ConstantSourceNode(context, {offset: 0});
+        const src1 = new ConstantSourceNode(context, {offset: 0});
 
-            // This should always succeed.  We just want to print out a message
-            // that |src1| is a constant source node for the following
-            // processing.
-            should(src1, 'src1 = new ConstantSourceNode(context, {offset: 0})')
-                .beEqualTo(src1);
+        // This should always succeed.  We just want to print out a message
+        // that |src1| is a constant source node for the following
+        // processing.
+        assert_equals(
+            src1, src1,
+            'src1 = new ConstantSourceNode(context, {offset: 0}) ' +
+                'should succeed');
 
-            src1.connect(context.destination);
+        src1.connect(context.destination);
 
-            const frame = 1;
+        const frameIndex = 1;
 
-            // These time values are arranged so that time1 < frame/sampleRate <
-            // time2.  This means we need to interpolate to get a value at given
-            // frame.
-            //
-            // The values are not so important, but |value2| should be huge.
-            const time1 = frame * (1 - epsneg) / context.sampleRate;
-            const value1 = 1e15;
+        // These time values are arranged so that time1 < frame/sampleRate <
+        // time2.  This means we need to interpolate to get a value at given
+        // frame.
+        //
+        // The values are not so important, but |value2| should be huge.
+        const time1 = frameIndex * (1 - epsneg) / context.sampleRate;
+        const value1 = 1e15;
 
-            const time2 = frame * (1 + epspos) / context.sampleRate;
-            const value2 = floatMax;
+        const time2 = frameIndex * (1 + epspos) / context.sampleRate;
+        const value2 = floatMax;
 
-            should(
-                src1.offset.setValueAtTime(value1, time1),
-                `src1.offset.setValueAtTime(${value1}, ${time1})`)
-                .beEqualTo(src1.offset);
-            should(
-                src1.offset.linearRampToValueAtTime(value2, time2),
-                `src1.offset.linearRampToValueAtTime(${value2}, ${time2})`)
-                .beEqualTo(src1.offset);
+        assert_equals(
+            src1.offset.setValueAtTime(value1, time1),
+            src1.offset,
+            `src1.offset.setValueAtTime(${value1}, ${time1}) should ` +
+                `return AudioParam`);
+        assert_equals(
+            src1.offset.linearRampToValueAtTime(value2, time2),
+            src1.offset,
+            `src1.offset.linearRampToValueAtTime(${value2}, ${time2}) should ` +
+                `return AudioParam`);
 
-            src1.start();
+        src1.start();
 
-            context.startRendering()
-                .then(buffer => {
-                  const output = buffer.getChannelData(0);
+        const renderedBuffer = await context.startRendering();
+        const output = renderedBuffer.getChannelData(0);
 
-                  // Sanity check
-                  should(time2 - time1, 'Event time difference')
-                      .notBeEqualTo(0);
+        // Sanity check
+        assert_not_equals(
+            time2 - time1, 0,
+            'Sanity check: time1 and time2 should not be equal');
+        // Because 0 < time1 < 1, output must be 0 at time 0.
+        assert_equals(
+            output[0], 0, 'output[0] should be 0 before any automation');
 
-                  // Because 0 < time1 < 1, output must be 0 at time 0.
-                  should(output[0], 'output[0]').beEqualTo(0);
+        // Because time1 < 1/sampleRate < time2, we need to
+        // interpolate the value between these times to determine the
+        // output at frame 1.
+        const sampleTime = frameIndex / context.sampleRate;
+        const interpolated =
+            value1 + (value2 - value1) * (sampleTime - time1) / (time2 - time1);
+        assert_approx_equals(
+            output[1],
+            interpolated, 0,
+            'Interpolated value at frame 1 should match ramp');
 
-                  // Because time1 < 1/sampleRate < time2, we need to
-                  // interpolate the value between these times to determine the
-                  // output at frame 1.
-                  const t = frame / context.sampleRate;
-                  const v = value1 +
-                      (value2 - value1) * (t - time1) / (time2 - time1);
-
-                  should(output[1], 'output[1]').beCloseTo(v, {threshold: 0});
-
-                  // Because 1 < time2 < 2, the output at frame 2 and higher is
-                  // constant.
-                  should(output.slice(2), 'output[2:]')
-                      .beConstantValueOf(value2);
-                })
-                .then(() => task.done());
-          });
-
-      audit.run();
+        // Because 1 < time2 < 2, the output at frame 2 and higher is
+        // constant.
+        assert_array_constant_value(
+            output.slice(2), value2, 'output[2:] should be constant at value2');
+      }, 'Interpolation of linear ramp between very close time values');
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html
index 9084942f703..5bdc1a14843 100644
--- a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html
+++ b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-summingjunction.html
@@ -1,8 +1,4 @@
 <!DOCTYPE html>
-<!--
-Tests that multiple audio-rate signals (AudioNode outputs) can be connected to an AudioParam
-and that these signals are summed, along with the AudioParams intrinsic value.
--->
 <html>
   <head>
     <title>
@@ -11,47 +7,43 @@ and that these signals are summed, along with the AudioParams intrinsic value.
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
     <script src="/webaudio/resources/audit-util.js"></script>
-    <script src="/webaudio/resources/audit.js"></script>
     <script src="/webaudio/resources/mix-testing.js"></script>
   </head>
   <body>
-    <script id="layout-test-code">
-      let audit = Audit.createTaskRunner();
-
-      let sampleRate = 44100.0;
-      let lengthInSeconds = 1;
-
-      let context = 0;
+    <script>
+      // Tests that multiple audio-rate signals (AudioNode outputs)
+      // can be connected to an AudioParam and that these signals
+      // are summed, along with the AudioParams intrinsic value.
+      const sampleRate = 44100.0;
+      const lengthInSeconds = 1;
 
       // Buffers used by the two gain controlling sources.
       let linearRampBuffer;
       let toneBuffer;
-      let toneFrequency = 440;
-
+      const toneFrequency = 440;
       // Arbitrary non-zero value.
-      let baselineGain = 5;
+      const baselineGain = 5;
 
-      // Allow for a small round-off error.
-      let maxAllowedError = 1e-6;
+      const maxAllowedError = 1e-6;
 
-      function checkResult(renderedBuffer, should) {
+      function checkResult(renderedBuffer) {
         let renderedData = renderedBuffer.getChannelData(0);
 
         // Get buffer data from the two sources used to control gain.
-        let linearRampData = linearRampBuffer.getChannelData(0);
-        let toneData = toneBuffer.getChannelData(0);
+        const linearRampData = linearRampBuffer.getChannelData(0);
+        const toneData = toneBuffer.getChannelData(0);
 
-        let n = renderedBuffer.length;
+        const n = renderedBuffer.length;
 
-        should(n, 'Rendered signal length').beEqualTo(linearRampBuffer.length);
+        assert_equals(n, linearRampBuffer.length, 'Rendered signal length');
 
         // Check that the rendered result exactly matches the sum of the
         // intrinsic gain plus the two sources used to control gain. This is
         // because we're changing the gain of a signal having constant value 1.
         let success = true;
         for (let i = 0; i < n; ++i) {
-          let expectedValue = baselineGain + linearRampData[i] + toneData[i];
-          let error = Math.abs(expectedValue - renderedData[i]);
+          const expectedValue = baselineGain + linearRampData[i] + toneData[i];
+          const error = Math.abs(expectedValue - renderedData[i]);
 
           if (error > maxAllowedError) {
             success = false;
@@ -59,38 +51,39 @@ and that these signals are summed, along with the AudioParams intrinsic value.
           }
         }
 
-        should(
+        assert_true(
             success,
-            'Rendered signal matches sum of two audio-rate gain changing signals plus baseline gain')
-            .beTrue();
+            'Rendered signal matches sum of two audio-rate gain changing ' +
+                'signals plus baseline gain'
+        );
       }
 
-      audit.define('test', function(task, should) {
-        let sampleFrameLength = sampleRate * lengthInSeconds;
+      promise_test(async t => {
+        const sampleFrameLength = sampleRate * lengthInSeconds;
 
-        // Create offline audio context.
-        context = new OfflineAudioContext(1, sampleFrameLength, sampleRate);
+        const context =
+            new OfflineAudioContext(1, sampleFrameLength, sampleRate);
 
         // Create buffer used by the source which will have its gain controlled.
-        let constantOneBuffer =
+        const constantOneBuffer =
             createConstantBuffer(context, sampleFrameLength, 1);
-        let constantSource = context.createBufferSource();
+        let constantSource = new AudioBufferSourceNode(context);
         constantSource.buffer = constantOneBuffer;
 
         // Create 1st buffer used to control gain (a linear ramp).
         linearRampBuffer = createLinearRampBuffer(context, sampleFrameLength);
-        let gainSource1 = context.createBufferSource();
+        let gainSource1 = new AudioBufferSourceNode(context);
         gainSource1.buffer = linearRampBuffer;
 
         // Create 2st buffer used to control gain (a simple sine wave tone).
         toneBuffer =
             createToneBuffer(context, toneFrequency, lengthInSeconds, 1);
-        let gainSource2 = context.createBufferSource();
+        let gainSource2 = new AudioBufferSourceNode(context);
         gainSource2.buffer = toneBuffer;
 
         // Create a gain node controlling the gain of constantSource and make
         // the connections.
-        let gainNode = context.createGain();
+        let gainNode = new GainNode(context);
 
         // Intrinsic baseline gain.
         // This gain value should be summed with gainSource1 and gainSource2.
@@ -108,13 +101,10 @@ and that these signals are summed, along with the AudioParams intrinsic value.
         gainSource1.start(0);
         gainSource2.start(0);
 
-        context.startRendering().then(buffer => {
-          checkResult(buffer, should);
-          task.done();
-        });
-      });
-
-      audit.run();
+        const renderedBuffer = await context.startRendering();
+        checkResult(renderedBuffer);
+      }, 'Test summing junction behavior of AudioParam with multiple ' +
+          'audio-rate sources and intrinsic gain');
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/context_created.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/context_created.py
index 55bb195c6e2..ac88dea9c7e 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/context_created.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/context_created.py
@@ -322,49 +322,6 @@ async def test_new_user_context(
     remove_listener()
 
 
-@pytest.mark.parametrize("type_hint", ["tab", "window"])
-async def test_existing_context(bidi_session, wait_for_event, wait_for_future_safe, subscribe_events, type_hint):
-    # See https://w3c.github.io/webdriver-bidi/#ref-for-remote-end-subscribe-steps%E2%91%A1.
-    top_level_context = await bidi_session.browsing_context.create(type_hint=type_hint)
-
-    on_entry = wait_for_event(CONTEXT_CREATED_EVENT)
-    await subscribe_events([CONTEXT_CREATED_EVENT], contexts=[top_level_context["context"]])
-    context_info = await wait_for_future_safe(on_entry)
-    contexts = await bidi_session.browsing_context.get_tree(root=top_level_context["context"])
-
-    assert_browsing_context(
-        context_info,
-        top_level_context["context"],
-        children=None,
-        url="about:blank",
-        parent=None,
-        user_context="default",
-        client_window=contexts[0]["clientWindow"],
-    )
-
-
-@pytest.mark.parametrize("type_hint", ["tab", "window"])
-async def test_existing_context_via_user_context(bidi_session, create_user_context, wait_for_event, wait_for_future_safe, subscribe_events, type_hint):
-    user_context = await create_user_context()
-    # See https://w3c.github.io/webdriver-bidi/#ref-for-remote-end-subscribe-steps%E2%91%A1.
-    top_level_context = await bidi_session.browsing_context.create(type_hint=type_hint, user_context=user_context)
-
-    on_entry = wait_for_event(CONTEXT_CREATED_EVENT)
-    await subscribe_events([CONTEXT_CREATED_EVENT], user_contexts=[user_context])
-    context_info = await wait_for_future_safe(on_entry)
-    contexts = await bidi_session.browsing_context.get_tree(root=top_level_context["context"])
-
-    assert_browsing_context(
-        context_info,
-        top_level_context["context"],
-        children=None,
-        url="about:blank",
-        parent=None,
-        user_context=user_context,
-        client_window=contexts[0]["clientWindow"],
-    )
-
-
 @pytest.mark.parametrize("type_hint", ["tab", "window"])
 async def test_client_window(bidi_session, wait_for_event, wait_for_future_safe, subscribe_events, type_hint):
     await subscribe_events([CONTEXT_CREATED_EVENT])
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/subscribe_steps.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/subscribe_steps.py
new file mode 100644
index 00000000000..ef7ff0ceea6
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/context_created/subscribe_steps.py
@@ -0,0 +1,172 @@
+import pytest
+
+from .. import assert_browsing_context
+
+pytestmark = pytest.mark.asyncio
+
+CONTEXT_CREATED_EVENT = "browsingContext.contextCreated"
+
+def find_event_by_context(context, events):
+    return next(
+        (data for method, data in events if data["context"] == context["context"]), None
+    )
+
+def find_client_window_by_context(context, contexts):
+    return next(
+        (found_context["clientWindow"] for found_context in contexts if found_context["context"] == context["context"]), None
+    )
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_existing_context(bidi_session, wait_for_event, wait_for_future_safe, subscribe_events, type_hint):
+    # See https://w3c.github.io/webdriver-bidi/#ref-for-remote-end-subscribe-steps%E2%91%A1.
+    top_level_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+
+    on_entry = wait_for_event(CONTEXT_CREATED_EVENT)
+    await subscribe_events([CONTEXT_CREATED_EVENT], contexts=[top_level_context["context"]])
+    context_info = await wait_for_future_safe(on_entry)
+    contexts = await bidi_session.browsing_context.get_tree(root=top_level_context["context"])
+
+    assert_browsing_context(
+        context_info,
+        top_level_context["context"],
+        url="about:blank",
+        user_context="default",
+        client_window=contexts[0]["clientWindow"],
+    )
+
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_existing_context_via_user_context(bidi_session, create_user_context, wait_for_event, wait_for_future_safe, subscribe_events, type_hint):
+    user_context = await create_user_context()
+    # See https://w3c.github.io/webdriver-bidi/#ref-for-remote-end-subscribe-steps%E2%91%A1.
+    top_level_context = await bidi_session.browsing_context.create(type_hint=type_hint, user_context=user_context)
+
+    on_entry = wait_for_event(CONTEXT_CREATED_EVENT)
+    await subscribe_events([CONTEXT_CREATED_EVENT], user_contexts=[user_context])
+    context_info = await wait_for_future_safe(on_entry)
+    contexts = await bidi_session.browsing_context.get_tree(root=top_level_context["context"])
+
+    assert_browsing_context(
+        context_info,
+        top_level_context["context"],
+        url="about:blank",
+        user_context=user_context,
+        client_window=contexts[0]["clientWindow"],
+    )
+
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_existing_nested_contexts(bidi_session, wait_for_events, test_page_nested_frames, subscribe_events, type_hint):
+    second_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+
+    await bidi_session.browsing_context.navigate(
+        context=second_context["context"], url=test_page_nested_frames, wait="complete"
+    )
+
+    with wait_for_events([CONTEXT_CREATED_EVENT]) as waiter:
+        await subscribe_events([CONTEXT_CREATED_EVENT], contexts=[second_context["context"]])
+
+        events = await waiter.get_events(lambda events : len(events) >= 1)
+        assert len(events) == 3
+
+        contexts = await bidi_session.browsing_context.get_tree()
+
+        assert_browsing_context(
+            find_event_by_context(second_context, events),
+            second_context["context"],
+            url=test_page_nested_frames,
+            user_context="default",
+            client_window=find_client_window_by_context(second_context, contexts),
+        )
+
+        assert_browsing_context(
+            find_event_by_context(contexts[1]["children"][0], events),
+            contexts[1]["children"][0]["context"],
+            url=contexts[1]["children"][0]["url"],
+            parent=second_context["context"],
+            user_context="default",
+            client_window=contexts[1]["children"][0]["clientWindow"],
+        )
+
+        assert_browsing_context(
+            find_event_by_context(contexts[1]["children"][0]["children"][0], events),
+            contexts[1]["children"][0]["children"][0]["context"],
+            url=contexts[1]["children"][0]["children"][0]["url"],
+            parent=contexts[1]["children"][0]["context"],
+            user_context="default",
+            client_window=contexts[1]["children"][0]["children"][0]["clientWindow"],
+        )
+
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_new_context_event_not_subscribed(bidi_session, wait_for_events, test_page_nested_frames, subscribe_events, type_hint):
+    top_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+    second_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+
+    await bidi_session.browsing_context.navigate(
+        context=second_context["context"], url=test_page_nested_frames, wait="complete"
+    )
+
+    with wait_for_events([CONTEXT_CREATED_EVENT]) as waiter:
+        await subscribe_events(events=[CONTEXT_CREATED_EVENT], contexts=[top_context["context"]])
+
+        events = await waiter.get_events(lambda events : len(events) >= 1)
+        assert len(events) == 1
+
+        first_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+
+        await subscribe_events(events=[CONTEXT_CREATED_EVENT], contexts=[first_context["context"]])
+        events = await waiter.get_events(lambda events : len(events) >= 1)
+        assert len(events) == 2
+
+        contexts = await bidi_session.browsing_context.get_tree()
+
+        assert_browsing_context(
+            find_event_by_context(top_context, events),
+            top_context["context"],
+            url="about:blank",
+            user_context="default",
+            client_window=find_client_window_by_context(top_context, contexts),
+        )
+
+        assert_browsing_context(
+            find_event_by_context(first_context, events),
+            first_context["context"],
+            url="about:blank",
+            user_context="default",
+            client_window=find_client_window_by_context(first_context, contexts),
+        )
+
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_new_context_event_cross_origin_frame(bidi_session, wait_for_events, test_page_nested_frames, test_page_cross_origin_frame, subscribe_events, type_hint):
+    first_context = await bidi_session.browsing_context.create(type_hint=type_hint)
+
+    await bidi_session.browsing_context.navigate(
+      context=first_context["context"], url=test_page_cross_origin_frame, wait="complete"
+    )
+
+    with wait_for_events([CONTEXT_CREATED_EVENT]) as waiter:
+        await subscribe_events(events=[CONTEXT_CREATED_EVENT], contexts=[first_context["context"]])
+
+        events = await waiter.get_events(lambda events : len(events) >= 1)
+        assert len(events) == 2
+
+        contexts = await bidi_session.browsing_context.get_tree()
+
+        assert_browsing_context(
+            find_event_by_context(first_context, events),
+            first_context["context"],
+            url=test_page_cross_origin_frame,
+            user_context="default",
+            client_window=find_client_window_by_context(first_context, contexts),
+        )
+
+        assert_browsing_context(
+            find_event_by_context(contexts[1]["children"][0], events),
+            contexts[1]["children"][0]["context"],
+            url=contexts[1]["children"][0]["url"],
+            parent=first_context["context"],
+            user_context="default",
+            client_window=contexts[1]["children"][0]["clientWindow"],
+        )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_committed/navigation_committed.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_committed/navigation_committed.py
index 9ac997bc6c0..af002333fe3 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_committed/navigation_committed.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_committed/navigation_committed.py
@@ -89,6 +89,35 @@ async def test_timestamp(
     )
 
 
+async def test_basic_auth(
+    bidi_session, subscribe_events, top_context, server_config, wait_for_event, wait_for_future_safe
+):
+    await subscribe_events(events=[NAVIGATION_COMMITTED_EVENT])
+
+    on_entry = wait_for_event(NAVIGATION_COMMITTED_EVENT)
+
+    url_with_auth = "https://foo:bar@{0}:{1}{2}".format(
+        server_config["browser_host"],
+        server_config["ports"]["https"][0],
+        PAGE_EMPTY
+    )
+
+    result = await bidi_session.browsing_context.navigate(
+        context=top_context["context"], url=url_with_auth, wait="complete"
+    )
+
+    event = await wait_for_future_safe(on_entry)
+
+    assert_navigation_info(
+        event,
+        {
+            "context": top_context["context"],
+            "navigation": result["navigation"],
+            "url": url_with_auth
+        },
+    )
+
+
 async def test_iframe(
     bidi_session, subscribe_events, top_context, test_page_same_origin_frame, test_page
 ):
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/add_data_collector.py b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/add_data_collector.py
new file mode 100644
index 00000000000..0670eff61dc
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/add_data_collector.py
@@ -0,0 +1,16 @@
+import pytest
+import webdriver.bidi.error as error
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_return_value(bidi_session, add_data_collector):
+    collector = await add_data_collector(
+        collector_type="blob", data_types=["response"], max_encoded_data_size=1000
+    )
+    other_collector = await add_data_collector(
+        collector_type="blob", data_types=["response"], max_encoded_data_size=1000
+    )
+    assert isinstance(collector, str)
+    assert isinstance(other_collector, str)
+    assert collector != other_collector
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/contexts.py b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/contexts.py
new file mode 100644
index 00000000000..c204fe76fa3
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/contexts.py
@@ -0,0 +1,99 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT, RESPONSE_COMPLETED_EVENT
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_multiple_contexts(
+    bidi_session,
+    add_data_collector,
+    setup_network_test,
+    wait_for_event,
+    wait_for_future_safe,
+    url,
+    fetch,
+):
+    context = await bidi_session.browsing_context.create(type_hint="tab")
+    other_context = await bidi_session.browsing_context.create(type_hint="tab")
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context["context"]
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=other_context["context"]
+    )
+
+    collector = await add_data_collector(contexts=[context["context"]])
+    other_collector = await add_data_collector(contexts=[other_context["context"]])
+    both_contexts_collector = await add_data_collector(
+        contexts=[context["context"], other_context["context"]]
+    )
+
+    # Trigger a request in `context`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Trigger a request in `other_context`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=other_context)
+    event = await wait_for_future_safe(on_response_completed)
+    other_request = event["request"]["request"]
+
+    # request data can be retrieved from collector or both_contexts_collectors
+    await bidi_session.network.get_data(
+        request=request, data_type="response", collector=collector
+    )
+    await bidi_session.network.get_data(
+        request=request, data_type="response", collector=both_contexts_collector
+    )
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", collector=other_collector
+        )
+
+    # other_request data can be retrieved from other_collector or both_contexts_collectors
+    await bidi_session.network.get_data(
+        request=other_request, data_type="response", collector=other_collector
+    )
+    await bidi_session.network.get_data(
+        request=other_request, data_type="response", collector=both_contexts_collector
+    )
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request=other_request, data_type="response", collector=collector
+        )
+
+
+@pytest.mark.parametrize("domain", ["", "alt"], ids=["same_origin", "cross_origin"])
+async def test_iframe(
+    bidi_session,
+    add_data_collector,
+    setup_network_test,
+    wait_for_event,
+    wait_for_future_safe,
+    url,
+    fetch,
+    domain,
+    inline,
+    new_tab,
+):
+    iframe_url = inline("<div id='in-iframe'>foo</div>", domain=domain)
+    page_url = inline(f"<iframe src='{iframe_url}'></iframe>")
+
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=new_tab["context"], test_url=page_url
+    )
+
+    collector = await add_data_collector(contexts=[new_tab["context"]])
+
+    # Trigger a fetch request in the iframe context.
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=new_tab)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the data for the iframe request has been collected.
+    await bidi_session.network.get_data(request=request, data_type="response")
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/invalid.py
index aa6a19e3241..ee13a7d97d8 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/invalid.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/invalid.py
@@ -108,6 +108,27 @@ async def test_params_contexts_invalid_value(bidi_session):
         )
 
 
+async def test_params_contexts_context_non_top_level(bidi_session, new_tab, test_page_same_origin_frame):
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"],
+        url=test_page_same_origin_frame,
+        wait="complete",
+    )
+
+    contexts = await bidi_session.browsing_context.get_tree(root=new_tab["context"])
+
+    assert len(contexts) == 1
+    assert len(contexts[0]["children"]) == 1
+    child_info = contexts[0]["children"][0]
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.add_data_collector(
+            data_types=["response"],
+            max_encoded_data_size=1000,
+            contexts=[child_info['context']]
+        )
+
+
 @pytest.mark.parametrize("value", [False, 42, {}, ""])
 async def test_params_user_contexts_invalid_type(bidi_session, value):
     with pytest.raises(error.InvalidArgumentException):
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/max_encoded_data_size.py b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/max_encoded_data_size.py
new file mode 100644
index 00000000000..7c493ed31c8
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/max_encoded_data_size.py
@@ -0,0 +1,50 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT, RESPONSE_COMPLETED_EVENT
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_max_encoded_data_size(
+    bidi_session,
+    add_data_collector,
+    setup_network_test,
+    wait_for_event,
+    wait_for_future_safe,
+    url,
+    fetch,
+):
+    context = await bidi_session.browsing_context.create(type_hint="tab")
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context["context"]
+    )
+
+    small_collector = await add_data_collector(max_encoded_data_size=1)
+    big_collector = await add_data_collector(max_encoded_data_size=100000)
+
+    # Trigger a request in `context`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # request data can be retrieved with big_collector or with no collector
+    # argument
+    await bidi_session.network.get_data(
+        request=request, data_type="response", collector=big_collector
+    )
+    await bidi_session.network.get_data(
+        request=request, data_type="response"
+    )
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", collector=small_collector
+        )
+
+    # Remove big_collector and check the collected data can no longer be accessed
+    await bidi_session.network.remove_data_collector(collector=big_collector)
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response"
+        )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/user_contexts.py b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/user_contexts.py
new file mode 100644
index 00000000000..727db98c369
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/add_data_collector/user_contexts.py
@@ -0,0 +1,140 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT, RESPONSE_COMPLETED_EVENT
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_user_context(
+    bidi_session,
+    add_data_collector,
+    create_user_context,
+    setup_network_test,
+    wait_for_event,
+    wait_for_future_safe,
+    url,
+    fetch,
+):
+    user_context = await create_user_context()
+    context_in_user_context_1 = await bidi_session.browsing_context.create(
+        user_context=user_context, type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_user_context_1["context"]
+    )
+
+    # Add a collector for this user context
+    collector = await add_data_collector(user_contexts=[user_context])
+
+    # Trigger a request in `context_in_user_context_1`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_user_context_1)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_user_context_1` can be retrieved
+    await bidi_session.network.get_data(request=request, data_type="response")
+
+    # Create a new context in the user context.
+    context_in_user_context_2 = await bidi_session.browsing_context.create(
+        user_context=user_context, type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_user_context_2["context"]
+    )
+
+    # Trigger a request in `context_in_user_context_2`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_user_context_2)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_user_context_2` can be retrieved
+    await bidi_session.network.get_data(request=request, data_type="response")
+
+    # Create a new context in the default user context.
+    context_in_default_context = await bidi_session.browsing_context.create(
+        type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_default_context["context"]
+    )
+
+    # Trigger a request in `context_in_default_context`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_default_context)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_default_context` can NOT be retrieved
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(request=request, data_type="response")
+
+
+async def test_multiple_user_context(
+    bidi_session,
+    add_data_collector,
+    create_user_context,
+    setup_network_test,
+    wait_for_event,
+    wait_for_future_safe,
+    url,
+    fetch,
+):
+    # Setup a user context and create a tab in it.
+    user_context_a = await create_user_context()
+    context_in_user_context_a = await bidi_session.browsing_context.create(
+        user_context=user_context_a, type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_user_context_a["context"]
+    )
+
+    # Setup another user context and create a tab in it.
+    user_context_b = await create_user_context()
+    context_in_user_context_b = await bidi_session.browsing_context.create(
+        user_context=user_context_b, type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_user_context_b["context"]
+    )
+
+    # Add a collector for both user contexts
+    collector = await add_data_collector(user_contexts=[user_context_a, user_context_b])
+
+    # Trigger a request in `context_in_user_context_a`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_user_context_a)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_user_context_a` can be retrieved
+    await bidi_session.network.get_data(request=request, data_type="response")
+
+    # Trigger a request in `context_in_user_context_b`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_user_context_b)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_user_context_b` can be retrieved
+    await bidi_session.network.get_data(request=request, data_type="response")
+
+    # Create a new context in the default user context.
+    context_in_default_context = await bidi_session.browsing_context.create(
+        type_hint="tab"
+    )
+    await setup_network_test(
+        events=[RESPONSE_COMPLETED_EVENT], context=context_in_default_context["context"]
+    )
+
+    # Trigger a request in `context_in_default_context`
+    on_response_completed = wait_for_event(RESPONSE_COMPLETED_EVENT)
+    await fetch(url(PAGE_EMPTY_TEXT), context=context_in_default_context)
+    event = await wait_for_future_safe(on_response_completed)
+    request = event["request"]["request"]
+
+    # Check that the request data from `context_in_default_context` can NOT be retrieved
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(request=request, data_type="response")
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/get_data/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/get_data/collector.py b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/collector.py
new file mode 100644
index 00000000000..700a94fa864
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/collector.py
@@ -0,0 +1,40 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_single_collector(bidi_session, url, setup_collected_response):
+    [request, collector] = await setup_collected_response(
+        fetch_url=url(PAGE_EMPTY_TEXT)
+    )
+    data = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=collector
+    )
+
+    assert data["type"] == "string"
+    assert data["value"] == "empty\n"
+
+
+async def test_several_collectors(
+    bidi_session, url, add_data_collector, setup_collected_response
+):
+    collector = await add_data_collector(
+        collector_type="blob", data_types=["response"], max_encoded_data_size=1000
+    )
+    [request, other_collector] = await setup_collected_response(
+        fetch_url=url(PAGE_EMPTY_TEXT)
+    )
+
+    data = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=collector
+    )
+    assert data["type"] == "string"
+    assert data["value"] == "empty\n"
+
+    data_from_other_collector = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=other_collector
+    )
+    assert data_from_other_collector == data
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/get_data/disown.py b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/disown.py
new file mode 100644
index 00000000000..0e991701703
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/disown.py
@@ -0,0 +1,60 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("disown", [True, False])
+async def test_single_collector(bidi_session, url, setup_collected_response, disown):
+    [request, collector] = await setup_collected_response(
+        fetch_url=url(PAGE_EMPTY_TEXT)
+    )
+    data = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=collector, disown=disown
+    )
+    # Assert the data retrieved with the disown parameter is still valid
+    assert data["type"] == "string"
+    assert data["value"] == "empty\n"
+
+    if disown:
+        with pytest.raises(error.NoSuchNetworkDataException):
+            await bidi_session.network.get_data(request=request, data_type="response")
+    else:
+        data_again = await bidi_session.network.get_data(
+            request=request, data_type="response"
+        )
+        assert data_again == data
+
+
+async def test_several_collectors(
+    bidi_session, url, add_data_collector, setup_collected_response
+):
+    collector = await add_data_collector(
+        collector_type="blob", data_types=["response"], max_encoded_data_size=1000
+    )
+    [request, other_collector] = await setup_collected_response(
+        fetch_url=url(PAGE_EMPTY_TEXT)
+    )
+
+    data = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=collector, disown=True
+    )
+
+    # Check that the data can no longer be retrieved for the disowned collector
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", collector=collector
+        )
+
+    # Check that the data can still be retrieved for the other collector or
+    # without any collector parameter.
+    data_from_other_collector = await bidi_session.network.get_data(
+        request=request, data_type="response", collector=other_collector
+    )
+    assert data_from_other_collector == data
+
+    data_without_collector = await bidi_session.network.get_data(
+        request=request, data_type="response"
+    )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/get_data/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/invalid.py
new file mode 100644
index 00000000000..2ee725bef97
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/invalid.py
@@ -0,0 +1,81 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_TEXT
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("value", [None, False, 42, {}, []])
+async def test_params_request_invalid_type(bidi_session, value):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(request=value, data_type="response")
+
+
+async def test_params_request_non_existent(bidi_session):
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(
+            request="does_not_exist", data_type="response"
+        )
+
+
+@pytest.mark.parametrize("value", [None, False, 42, {}, []])
+async def test_params_data_type_invalid_type(
+    bidi_session, url, setup_collected_response, value
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(request=request, data_type=value)
+
+
+@pytest.mark.parametrize("value", ["", "invalid"])
+async def test_params_data_type_invalid_value(
+    bidi_session, url, setup_collected_response, value
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(request=request, data_type=value)
+
+
+@pytest.mark.parametrize("value", [False, 42, {}, []])
+async def test_params_collector_invalid_type(
+    bidi_session, url, setup_collected_response, value
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", collector=value
+        )
+
+
+async def test_params_collector_non_existent(
+    bidi_session, url, setup_collected_response
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+    with pytest.raises(error.NoSuchNetworkCollectorException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", collector="does_not_exist"
+        )
+
+
+@pytest.mark.parametrize("value", ["", "true", "false", 42, {}, []])
+async def test_params_disown_invalid_type(
+    bidi_session, url, setup_collected_response, value
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", disown=value
+        )
+
+
+async def test_params_disown_true_without_collector(
+    bidi_session, url, setup_collected_response
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_TEXT))
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.network.get_data(
+            request=request, data_type="response", disown=True
+        )
+
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/get_data/request.py b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/request.py
new file mode 100644
index 00000000000..8a0d0f5cf90
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/get_data/request.py
@@ -0,0 +1,29 @@
+import pytest
+import webdriver.bidi.error as error
+
+from .. import PAGE_EMPTY_IMAGE, PAGE_EMPTY_TEXT, PAGE_OTHER_TEXT
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "file, expected_value", [(PAGE_EMPTY_TEXT, "empty\n"), (PAGE_OTHER_TEXT, "other\n")]
+)
+async def test_request_text_file(
+    bidi_session, url, setup_collected_response, file, expected_value
+):
+    [request, _] = await setup_collected_response(fetch_url=url(file))
+    data = await bidi_session.network.get_data(request=request, data_type="response")
+
+    assert data["type"] == "string"
+    assert data["value"] == expected_value
+
+
+async def test_request_base64_file(
+    bidi_session, url, setup_collected_response,
+):
+    [request, _] = await setup_collected_response(fetch_url=url(PAGE_EMPTY_IMAGE))
+    data = await bidi_session.network.get_data(request=request, data_type="response")
+
+    assert data["type"] == "base64"
+    assert isinstance(data["value"], str)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/remove_data_collector/collector.py b/tests/wpt/tests/webdriver/tests/bidi/network/remove_data_collector/collector.py
index 50ecc311d7b..ef42efaa930 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/network/remove_data_collector/collector.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/remove_data_collector/collector.py
@@ -1,13 +1,43 @@
 import pytest
 import webdriver.bidi.error as error
 
+from .. import PAGE_EMPTY_TEXT
+
 pytestmark = pytest.mark.asyncio
 
 
-async def test_return_value(bidi_session, add_intercept):
+async def test_return_value(bidi_session):
     collector = await bidi_session.network.add_data_collector(
         data_types=["response"], max_encoded_data_size=1000
     )
 
     result = await bidi_session.network.remove_data_collector(collector=collector)
     assert result == {}
+
+
+async def test_data_not_available_after_remove(
+    bidi_session, url, add_data_collector, setup_collected_response
+):
+    # Collect a network response with 2 collectors
+    collector = await add_data_collector(
+        collector_type="blob", data_types=["response"], max_encoded_data_size=1000
+    )
+    [request, other_collector] = await setup_collected_response(
+        fetch_url=url(PAGE_EMPTY_TEXT)
+    )
+
+    # Remove the first collector.
+    await bidi_session.network.remove_data_collector(collector=collector)
+
+    # Data still available from other collector and globally
+    await bidi_session.network.get_data(
+        request=request, data_type="response", collector=other_collector
+    )
+    await bidi_session.network.get_data(request=request, data_type="response")
+
+    # Remove the other collector.
+    await bidi_session.network.remove_data_collector(collector=other_collector)
+
+    # Data no longer available globally
+    with pytest.raises(error.NoSuchNetworkDataException):
+        await bidi_session.network.get_data(request=request, data_type="response")
diff --git a/tests/wpt/tests/webdriver/tests/support/fixtures_bidi.py b/tests/wpt/tests/webdriver/tests/support/fixtures_bidi.py
index 08de417934d..5291a0a7264 100644
--- a/tests/wpt/tests/webdriver/tests/support/fixtures_bidi.py
+++ b/tests/wpt/tests/webdriver/tests/support/fixtures_bidi.py
@@ -15,6 +15,7 @@ from webdriver.bidi.error import (
     InvalidArgumentException,
     NoSuchFrameException,
     NoSuchInterceptException,
+    NoSuchNetworkCollectorException,
     NoSuchRequestException,
     NoSuchScriptException,
     NoSuchUserContextException,
@@ -670,6 +671,51 @@ async def setup_beforeunload_page(bidi_session, url):
     return setup_beforeunload_page
 
 
+@pytest_asyncio.fixture
+async def setup_collected_response(
+    bidi_session,
+    subscribe_events,
+    wait_for_event,
+    wait_for_future_safe,
+    top_context,
+    url,
+    fetch,
+    setup_network_test,
+    add_data_collector,
+):
+    """Adds a global data collector and triggers a request which should match
+    the collector and waits for the network.responseCompleted event.
+    Collector can be configured (size, types) when calling the fixture.
+    Returns the request id of the triggered request.
+    """
+
+    async def _setup_collected_response(
+        collector_type="blob",
+        data_types=["response"],
+        max_encoded_data_size=10000,
+        fetch_url=url("/webdriver/tests/bidi/network/support/empty.txt"),
+        context=top_context,
+    ):
+        collector = await add_data_collector(
+            collector_type=collector_type,
+            data_types=data_types,
+            max_encoded_data_size=max_encoded_data_size,
+        )
+        await setup_network_test(
+            events=[
+                "network.responseCompleted",
+            ]
+        )
+        on_response_completed = wait_for_event("network.responseCompleted")
+
+        await fetch(fetch_url, context=context)
+        response_completed_event = await on_response_completed
+        request = response_completed_event["request"]["request"]
+        return [request, collector]
+
+    return _setup_collected_response
+
+
 @pytest_asyncio.fixture
 async def setup_network_test(
     bidi_session,
@@ -736,6 +782,44 @@ async def setup_network_test(
         remove_listener()
 
 
+@pytest_asyncio.fixture
+async def add_data_collector(bidi_session):
+    """Add a network data collector, and ensure the collector is removed at the
+    end of the test."""
+
+    collectors = []
+
+    async def add_data_collector(
+        collector_type="blob",
+        data_types=["response"],
+        max_encoded_data_size=1000,
+        contexts=None,
+        user_contexts=None,
+    ):
+        nonlocal collectors
+        collector = await bidi_session.network.add_data_collector(
+            collector_type=collector_type,
+            data_types=data_types,
+            max_encoded_data_size=max_encoded_data_size,
+            contexts=contexts,
+            user_contexts=user_contexts,
+        )
+        collectors.append(collector)
+
+        return collector
+
+    yield add_data_collector
+
+    # Remove all added collectors at the end of the test
+    for collector in collectors:
+        try:
+            await bidi_session.network.remove_data_collector(collector=collector)
+        except NoSuchNetworkCollectorException:
+            # Ignore exceptions in case a specific collector was already removed
+            # during the test.
+            pass
+
+
 @pytest_asyncio.fixture
 async def add_intercept(bidi_session):
     """Add a network intercept for the provided phases and url patterns, and
diff --git a/tests/wpt/tests/webnn/conformance_tests/clamp.https.any.js b/tests/wpt/tests/webnn/conformance_tests/clamp.https.any.js
index cf77b67aa0e..b1e338dbecf 100644
--- a/tests/wpt/tests/webnn/conformance_tests/clamp.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/clamp.https.any.js
@@ -1893,7 +1893,7 @@ const clampTests = [
       }],
       'expectedOutputs': {
         'clampOutput': {
-          'data': [0, Infinity, 0, 2147483647, 0, 1, 0],
+          'data': [-Infinity, Infinity, -3e35, 2147483647, -2, 1, 0],
           'descriptor': {shape: [7], dataType: 'float32'}
         }
       }
@@ -1917,7 +1917,7 @@ const clampTests = [
       }],
       'expectedOutputs': {
         'clampOutput': {
-          'data': [-Infinity, 0, -3e35, 0, -2, 0, 0],
+          'data': [-Infinity, Infinity, -3e35, 2147483647, -2, 1, 0],
           'descriptor': {shape: [7], dataType: 'float32'}
         }
       }
diff --git a/tests/wpt/tests/webnn/conformance_tests/pad.https.any.js b/tests/wpt/tests/webnn/conformance_tests/pad.https.any.js
index 750e4aee617..55c6077e805 100644
--- a/tests/wpt/tests/webnn/conformance_tests/pad.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/pad.https.any.js
@@ -599,31 +599,31 @@ const padTests = [
       'expectedOutputs': {
         'padOutput': {
           'data': [
-            0,
-            0,
-            0,
-            0,
-            0,
-            0,
+            NaN,
+            NaN,
+            NaN,
+            NaN,
+            NaN,
+            NaN,
             22.76361846923828,
             -21.168529510498047,
             -91.66168975830078,
-            0,
-            0,
+            NaN,
+            NaN,
             16.863798141479492,
             60.51472091674805,
             -70.56755065917969,
-            0,
-            0,
+            NaN,
+            NaN,
             -60.643272399902344,
             -47.8821907043457,
             68.72557830810547,
-            0,
-            0,
-            0,
-            0,
-            0,
-            0
+            NaN,
+            NaN,
+            NaN,
+            NaN,
+            NaN,
+            NaN
           ],
           'descriptor': {shape: [5, 5], dataType: 'float32'}
         }
diff --git a/tests/wpt/tests/webrtc/RTCSctpTransport-maxMessageSize.html b/tests/wpt/tests/webrtc/RTCSctpTransport-maxMessageSize.html
index 99767611509..572446a1cbe 100644
--- a/tests/wpt/tests/webrtc/RTCSctpTransport-maxMessageSize.html
+++ b/tests/wpt/tests/webrtc/RTCSctpTransport-maxMessageSize.html
@@ -36,63 +36,98 @@ class SDPAttributeHelper {
     return `${sdpParts[0]}${attributeLine}${sdpParts[1]}`;
   }
 
-  sdpWithoutAttribute(sdp) {
-    return this.sdpWithValue(sdp);
+  descWithValue(desc, value) {
+    const {type, sdp} = desc;
+    return {type, sdp: this.sdpWithValue(sdp, value)};
+  }
+
+  descWithoutAttribute(desc) {
+    return this.descWithValue(desc);
   }
 }
 
+promise_test(async (t) => {
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
+
+  const channel = offerer.createDataChannel("chat");
+
+  await offerer.setLocalDescription();
+  await answerer.setRemoteDescription(offerer.localDescription);
+  await answerer.setLocalDescription();
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be greater than zero');
+
+  await offerer.setRemoteDescription(answerer.localDescription);
+  assert_not_equals(offerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(offerer.sctp.maxMessageSize, 0, 'maxMessageSize should be greater than zero');
+
+  assert_equals(offerer.sctp.maxMessageSize, answerer.sctp.maxMessageSize, 'Offerer and answerer should have the same maxMessageSize');
+}, 'Verify that maxMessageSize is greater than zero');
+
 const mmsAttributeHelper = new SDPAttributeHelper('max-message-size', '\\d+');
 let canSendSize = null;
 const remoteSize1 = 1;
 const remoteSize2 = 2;
 
 promise_test(async (t) => {
-  const pc = new RTCPeerConnection();
-  t.add_cleanup(() => pc.close());
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
 
-  assert_equals(pc.sctp, null, 'RTCSctpTransport must be null');
+  const channel = offerer.createDataChannel("chat");
 
-  let offer = await generateDataChannelOffer(pc);
-  assert_not_equals(mmsAttributeHelper.getValue(offer.sdp), null,
+  assert_equals(offerer.sctp, null, 'RTCSctpTransport must be null');
+
+  await offerer.setLocalDescription();
+  assert_not_equals(mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
     'SDP should have max-message-size attribute');
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, 0) };
-  await pc.setRemoteDescription(offer);
-  const answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, 0));
+  await answerer.setLocalDescription();
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  canSendSize = pc.sctp.maxMessageSize === Number.POSITIVE_INFINITY ? 0 : pc.sctp.maxMessageSize;
-  if (canSendSize !== 0 && canSendSize < remoteSize2) {
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available in the offerer');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive in the offerer');
+  canSendSize = answerer.sctp.maxMessageSize;
+
+  if (canSendSize < remoteSize2) {
     assert_unreached(
-      'This test needs canSendSize to be 0 or > 2 for further "below" and "above" tests');
+      'This test needs canSendSize to be at least 2 for further "below" and "above" tests');
   }
 }, 'Determine the local side send limitation (canSendSize) by offering a max-message-size of 0');
 
 promise_test(async (t) => {
   assert_not_equals(canSendSize, null, 'canSendSize needs to be determined');
 
-  const pc = new RTCPeerConnection();
-  t.add_cleanup(() => pc.close());
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
 
-  assert_equals(pc.sctp, null, 'RTCSctpTransport must be null');
+  const channel = offerer.createDataChannel("chat");
 
-  let offer = await generateDataChannelOffer(pc);
-  assert_not_equals(mmsAttributeHelper.getValue(offer.sdp), null,
+  assert_equals(offerer.sctp, null, 'RTCSctpTransport must be null');
+
+  await offerer.setLocalDescription();
+  assert_not_equals(mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
     'SDP should have max-message-size attribute');
 
   // Remove the max-message-size SDP attribute
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithoutAttribute(offer.sdp) };
-  await pc.setRemoteDescription(offer);
-  const answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithoutAttribute(offerer.localDescription));
+  await answerer.setLocalDescription();
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
   // Test outcome depends on canSendSize value
   if (canSendSize !== 0) {
-    assert_equals(pc.sctp.maxMessageSize, Math.min(65536, canSendSize),
+    assert_equals(answerer.sctp.maxMessageSize, Math.min(65536, canSendSize),
       'Missing SDP attribute and a non-zero canSendSize should give an maxMessageSize of min(65536, canSendSize)');
   } else {
-    assert_equals(pc.sctp.maxMessageSize, 65536,
+    assert_equals(answerer.sctp.maxMessageSize, 65536,
       'Missing SDP attribute and a canSendSize of 0 should give an maxMessageSize of 65536');
   }
 }, 'Remote offer SDP missing max-message-size attribute');
@@ -100,105 +135,134 @@ promise_test(async (t) => {
 promise_test(async (t) => {
   assert_not_equals(canSendSize, null, 'canSendSize needs to be determined');
 
-  const pc = new RTCPeerConnection();
-  t.add_cleanup(() => pc.close());
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
 
-  assert_equals(pc.sctp, null, 'RTCSctpTransport must be null');
+  const channel = offerer.createDataChannel("chat");
 
-  let offer = await generateDataChannelOffer(pc);
-  assert_not_equals(mmsAttributeHelper.getValue(offer.sdp), null,
+  assert_equals(offerer.sctp, null, 'RTCSctpTransport must be null');
+
+  await offerer.setLocalDescription();
+  assert_not_equals(mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
     'SDP should have max-message-size attribute');
 
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, remoteSize1) };
-  await pc.setRemoteDescription(offer);
-  const answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, remoteSize1));
+  await answerer.setLocalDescription();
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  assert_equals(pc.sctp.maxMessageSize, remoteSize1,
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
+  assert_equals(answerer.sctp.maxMessageSize, remoteSize1,
     'maxMessageSize should be the value provided by the remote peer (as long as it is less than canSendSize)');
 }, 'max-message-size with a (non-zero) value provided by the remote peer');
 
 promise_test(async (t) => {
   assert_not_equals(canSendSize, null, 'canSendSize needs to be determined');
 
-  const pc = new RTCPeerConnection();
-  t.add_cleanup(() => pc.close());
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
 
-  assert_equals(pc.sctp, null, 'RTCSctpTransport must be null');
+  const channel = offerer.createDataChannel("chat");
 
-  let offer = await generateDataChannelOffer(pc);
-  assert_not_equals(mmsAttributeHelper.getValue(offer.sdp), null,
+  assert_equals(offerer.sctp, null, 'RTCSctpTransport must be null');
+
+  await offerer.setLocalDescription();
+  assert_not_equals(mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
     'SDP should have max-message-size attribute');
 
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, remoteSize1) };
-  await pc.setRemoteDescription(offer);
-  let answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, remoteSize1));
+  await answerer.setLocalDescription();
+  await offerer.setRemoteDescription(answerer.localDescription);
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  assert_equals(pc.sctp.maxMessageSize, remoteSize1,
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
+  assert_equals(answerer.sctp.maxMessageSize, remoteSize1,
     'maxMessageSize should be the value provided by the remote peer (as long as it is less than canSendSize)');
 
   // Start new O/A exchange that updates max-message-size to remoteSize2
-  offer = await pc.createOffer();
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, remoteSize2)};
-  await pc.setRemoteDescription(offer);
-  answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await offerer.setLocalDescription();
+  assert_not_equals(
+    mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
+    'SDP should have max-message-size attribute');
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  assert_equals(pc.sctp.maxMessageSize, remoteSize2,
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, remoteSize2));
+  await answerer.setLocalDescription();
+  await offerer.setRemoteDescription(answerer.localDescription);
+
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_not_equals(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should never be 0');
+  assert_equals(answerer.sctp.maxMessageSize, remoteSize2,
     'maxMessageSize should be the new value provided by the remote peer (as long as it is less than canSendSize)');
 
   // Start new O/A exchange that updates max-message-size to zero
-  offer = await pc.createOffer();
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, 0)};
-  await pc.setRemoteDescription(offer);
-  answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await offerer.setLocalDescription();
+  assert_not_equals(
+    mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
+    'SDP should have max-message-size attribute');
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  assert_equals(pc.sctp.maxMessageSize, canSendSize,
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, 0));
+  await answerer.setLocalDescription();
+  await offerer.setRemoteDescription(answerer.localDescription);
+
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
+  assert_equals(answerer.sctp.maxMessageSize, canSendSize,
     'maxMessageSize should be canSendSize');
 
   // Start new O/A exchange that updates max-message-size to remoteSize1 again
-  offer = await pc.createOffer();
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, remoteSize1)};
-  await pc.setRemoteDescription(offer);
-  answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await offerer.setLocalDescription();
+  assert_not_equals(
+    mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
+    'SDP should have max-message-size attribute');
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
-  assert_equals(pc.sctp.maxMessageSize, remoteSize1,
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, remoteSize1));
+  await answerer.setLocalDescription();
+  await offerer.setRemoteDescription(answerer.localDescription);
+
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
+  assert_equals(answerer.sctp.maxMessageSize, remoteSize1,
     'maxMessageSize should be the new value provided by the remote peer (as long as it is less than canSendSize)');
 }, 'Renegotiate max-message-size with various values provided by the remote peer');
 
 promise_test(async (t) => {
   assert_not_equals(canSendSize, null, 'canSendSize needs to be determined');
-
-  const pc = new RTCPeerConnection();
-  t.add_cleanup(() => pc.close());
-
-  assert_equals(pc.sctp, null, 'RTCSctpTransport must be null');
   const largerThanCanSendSize = canSendSize === 0 ? 0 : canSendSize + 1;
 
-  let offer = await generateDataChannelOffer(pc);
-  assert_not_equals(mmsAttributeHelper.getValue(offer.sdp), null,
+  const offerer = new RTCPeerConnection();
+  t.add_cleanup(() => offerer.close());
+  const answerer = new RTCPeerConnection();
+  t.add_cleanup(() => answerer.close());
+
+  const channel = offerer.createDataChannel("chat");
+
+  assert_equals(offerer.sctp, null, 'RTCSctpTransport must be null');
+
+  await offerer.setLocalDescription();
+  assert_not_equals(mmsAttributeHelper.getValue(offerer.localDescription.sdp), null,
     'SDP should have max-message-size attribute');
 
-  offer = { type: 'offer', sdp: mmsAttributeHelper.sdpWithValue(offer.sdp, largerThanCanSendSize) };
-  await pc.setRemoteDescription(offer);
-  const answer = await pc.createAnswer();
-  await pc.setLocalDescription(answer);
+  await answerer.setRemoteDescription(
+    mmsAttributeHelper.descWithValue(offerer.localDescription, largerThanCanSendSize));
+  await answerer.setLocalDescription();
+  await offerer.setRemoteDescription(answerer.localDescription);
 
-  assert_not_equals(pc.sctp, null, 'RTCSctpTransport must be available');
+  assert_not_equals(answerer.sctp, null, 'RTCSctpTransport must be available');
+  assert_greater_than(answerer.sctp.maxMessageSize, 0, 'maxMessageSize should be positive');
   // Test outcome depends on canSendSize value
   if (canSendSize !== 0) {
-    assert_equals(pc.sctp.maxMessageSize, canSendSize,
+    assert_equals(answerer.sctp.maxMessageSize, canSendSize,
       'A remote value larger than a non-zero canSendSize should limit maxMessageSize to canSendSize');
   } else {
-    assert_equals(pc.sctp.maxMessageSize, Number.POSITIVE_INFINITY,
+    assert_equals(answerer.sctp.maxMessageSize, Number.POSITIVE_INFINITY,
       'A remote value of zero and canSendSize zero should result in "infinity"');
   }
 }, 'max-message-size with a (non-zero) value larger than canSendSize provided by the remote peer');