diff --git a/tests/wpt/meta-legacy-layout/css/css-animations/animate-with-color-mix.html.ini b/tests/wpt/meta-legacy-layout/css/css-animations/animate-with-color-mix.html.ini
new file mode 100644
index 00000000000..4172b4ec02b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-animations/animate-with-color-mix.html.ini
@@ -0,0 +1,18 @@
+[animate-with-color-mix.html]
+  [Animate from neutral keyframe with color-mix to legacy rgb]
+    expected: FAIL
+
+  [Animate from legacy rgb to neutral keyframe with color-mix]
+    expected: FAIL
+
+  [Animate from neutral keyframe with color-mix to srgb]
+    expected: FAIL
+
+  [Animate from srgb to neutral keyframe with color-mix]
+    expected: FAIL
+
+  [Animate from color-mix with transparency to legacy rgba]
+    expected: FAIL
+
+  [Animate from legacy rgba to color-mix with transparency]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
index 6ca549e0935..718a1bf8f6b 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
@@ -3316,3 +3316,9 @@
 
   [Property color value 'color(from color(xyz-d65 7 -20.5 100 / 0.8) xyz-d65 calc(x + 1) calc(y + 1) calc(z + 1) / calc(alpha + 0.01))']
     expected: FAIL
+
+  [Property color value 'color(from color(srgb 0.25 0.5 0.75) xyz-d50 x y z)']
+    expected: FAIL
+
+  [Property color value 'color(from color(srgb 0.25 0.5 0.75) xyz-d65 x y z)']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini
new file mode 100644
index 00000000000..175c900f1b4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini
@@ -0,0 +1,11 @@
+[text-spacing-trim-end-001.html?class=halt,vrl]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=chws,vrl]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=halt,htb]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=chws,htb]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini b/tests/wpt/meta-legacy-layout/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini
new file mode 100644
index 00000000000..f63461815af
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini
@@ -0,0 +1,336 @@
+[text-transform-math-auto-003.html]
+  [Selection.toString() for math-auto 'A' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'B' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'C' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'D' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'E' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'F' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'G' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'H' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'I' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'J' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'K' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'L' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'M' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'N' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'O' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'P' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Q' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'R' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'S' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'T' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'U' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'V' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'W' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'X' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Y' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Z' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'a' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'b' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'c' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'd' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'e' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'f' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'g' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'h' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'i' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'j' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'k' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'l' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'm' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'n' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'o' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'p' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'q' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'r' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 's' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 't' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'u' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'v' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'w' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'x' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'y' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'z' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ı' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ȷ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Α' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Β' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Γ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Δ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ε' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ζ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Η' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Θ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ι' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Κ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Λ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Μ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ν' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ξ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ο' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Π' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ρ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Σ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Τ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Υ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Φ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Χ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ψ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ω' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'α' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'β' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'γ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'δ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ε' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ζ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'η' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'θ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ι' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'κ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'λ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'μ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ν' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ξ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ο' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'π' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ρ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ς' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'σ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'τ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'υ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'φ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'χ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ψ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ω' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϑ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϕ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϖ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϰ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϱ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϴ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϵ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto '∂' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto '∇' returns the transformed character.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-text/text-transform/text-transform-upperlower-107.html.ini b/tests/wpt/meta-legacy-layout/css/css-text/text-transform/text-transform-upperlower-107.html.ini
new file mode 100644
index 00000000000..afffdbf6c3b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-text/text-transform/text-transform-upperlower-107.html.ini
@@ -0,0 +1,3 @@
+[text-transform-upperlower-107.html]
+  [Selection.toString() for 'ß' with text-transform: uppercase]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-transitions/animations/animate-with-color-mix.html.ini b/tests/wpt/meta-legacy-layout/css/css-transitions/animations/animate-with-color-mix.html.ini
new file mode 100644
index 00000000000..b195b0e5f61
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-transitions/animations/animate-with-color-mix.html.ini
@@ -0,0 +1,18 @@
+[animate-with-color-mix.html]
+  [Transition from color-mix to legacy rgb]
+    expected: FAIL
+
+  [Transition from legacy rgb to color-mix]
+    expected: FAIL
+
+  [Transition from color-mix to srgb]
+    expected: FAIL
+
+  [Transition from srgb to color-mix]
+    expected: FAIL
+
+  [Transition from color-mix with transparency to legacy rgba]
+    expected: FAIL
+
+  [Transition from legacy rgba to color-mix with transparency]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
index a08341d7a0f..47102f89bf6 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/progress-computed.tentative.html.ini
@@ -55,3 +55,12 @@
 
   [calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 2) should be used-value-equivalent to 4]
     expected: FAIL
+
+  [calc(progress(abs(5%) from hypot(3%, 4%) to 10%)) should be used-value-equivalent to 0]
+    expected: FAIL
+
+  [progress(1000em from 10em to 110em) should be used-value-equivalent to 9.9]
+    expected: FAIL
+
+  [scale(progress(1000em from 10rem to 110em)) should be used-value-equivalent to scale(9.9)]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini b/tests/wpt/meta-legacy-layout/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
index 314dca9c1f5..d52a3e77a70 100644
--- a/tests/wpt/meta-legacy-layout/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
@@ -1,3 +1,6 @@
 [MediaQueryList-addListener-removeListener.html]
   [listeners are called when <iframe> is resized]
     expected: FAIL
+
+  [listeners are called correct number of times]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/cssom-view/offsetTopLeft-border-box.html.ini b/tests/wpt/meta-legacy-layout/css/cssom-view/offsetTopLeft-border-box.html.ini
deleted file mode 100644
index 00753fab1d1..00000000000
--- a/tests/wpt/meta-legacy-layout/css/cssom-view/offsetTopLeft-border-box.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[offsetTopLeft-border-box.html]
-  [container: 0]
-    expected: FAIL
-
-  [container: 1]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/selectors/has-display-none-checked.html.ini b/tests/wpt/meta-legacy-layout/css/selectors/has-display-none-checked.html.ini
new file mode 100644
index 00000000000..17279e47d6c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/selectors/has-display-none-checked.html.ini
@@ -0,0 +1,2 @@
+[has-display-none-checked.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-append-first-node.html.ini b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-append-first-node.html.ini
new file mode 100644
index 00000000000..ae43158a3da
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-append-first-node.html.ini
@@ -0,0 +1,2 @@
+[has-append-first-node.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-sibling-insertion-removal.html.ini b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
index 78fdcc66a68..3fc80bbf3b9 100644
--- a/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
@@ -37,3 +37,6 @@
 
   [subject13: color after #sibling12_1 removed should be rgb(0, 128, 0)]
     expected: FAIL
+
+  [subject14: initial color should be rgb(0, 128, 0)]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/dom/events/scrolling/scrollend-fires-to-text-input.html.ini b/tests/wpt/meta-legacy-layout/dom/events/scrolling/scrollend-fires-to-text-input.html.ini
new file mode 100644
index 00000000000..29dfee6fbdb
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/dom/events/scrolling/scrollend-fires-to-text-input.html.ini
@@ -0,0 +1,4 @@
+[scrollend-fires-to-text-input.html]
+  expected: TIMEOUT
+  [scrolled input field should receive scrollend.]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/dom/observable/tentative/observable-toArray.any.js.ini b/tests/wpt/meta-legacy-layout/dom/observable/tentative/observable-toArray.any.js.ini
new file mode 100644
index 00000000000..5d47bdd0b8b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/dom/observable/tentative/observable-toArray.any.js.ini
@@ -0,0 +1,38 @@
+[observable-toArray.any.html]
+  [toArray(): basic next/complete]
+    expected: FAIL
+
+  [toArray(): first error() rejects promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): complete() resolves promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): Subscribing with an aborted signal returns an immediately rejected promise]
+    expected: FAIL
+
+  [toArray(): Aborting the passed-in signal rejects the returned promise]
+    expected: FAIL
+
+  [Operator Promise abort ordering]
+    expected: FAIL
+
+
+[observable-toArray.any.worker.html]
+  [toArray(): basic next/complete]
+    expected: FAIL
+
+  [toArray(): first error() rejects promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): complete() resolves promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): Subscribing with an aborted signal returns an immediately rejected promise]
+    expected: FAIL
+
+  [toArray(): Aborting the passed-in signal rejects the returned promise]
+    expected: FAIL
+
+  [Operator Promise abort ordering]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/api/basic/keepalive.any.js.ini b/tests/wpt/meta-legacy-layout/fetch/api/basic/keepalive.any.js.ini
index 4c1c78640bb..9aa4b06752c 100644
--- a/tests/wpt/meta-legacy-layout/fetch/api/basic/keepalive.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/api/basic/keepalive.any.js.ini
@@ -2,3 +2,18 @@
   expected: TIMEOUT
   [keepalive in onunload in nested frame in another window]
     expected: FAIL
+
+  [[keepalive\] simple GET request on 'pagehide' [no payload\]; setting up]
+    expected: TIMEOUT
+
+  [[keepalive\] simple GET request on 'unload' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'load' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'pagehide' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'unload' [no payload\]; setting up]
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/fetch/api/cors/cors-keepalive.any.js.ini b/tests/wpt/meta-legacy-layout/fetch/api/cors/cors-keepalive.any.js.ini
index 6801d7d88bd..9f657f6abc0 100644
--- a/tests/wpt/meta-legacy-layout/fetch/api/cors/cors-keepalive.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/api/cors/cors-keepalive.any.js.ini
@@ -1,2 +1,121 @@
 [cors-keepalive.any.html]
   expected: TIMEOUT
+  [[keepalive\] Same domain different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: TIMEOUT
+
+  [[keepalive\] Same domain different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
index f9de5391ad6..0d48169e3cc 100644
--- a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
@@ -146,3 +146,6 @@
 
   [list-style-image sec-fetch-site - HTTPS downgrade-upgrade]
     expected: FAIL
+
+  [background-image sec-fetch-site - HTTPS downgrade (header not sent)]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.https.window.js.ini b/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.https.window.js.ini
deleted file mode 100644
index 4deb955ad92..00000000000
--- a/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.https.window.js.ini
+++ /dev/null
@@ -1,37 +0,0 @@
-[location.tentative.https.window.html?include=from-private]
-  [private to local: failed preflight.]
-    expected: FAIL
-
-  [private to local: success.]
-    expected: FAIL
-
-
-[location.tentative.https.window.html?include=from-public]
-  [public to local: failed preflight.]
-    expected: FAIL
-
-  [public to local: success.]
-    expected: FAIL
-
-  [public to private: failed preflight.]
-    expected: FAIL
-
-  [public to private: success.]
-    expected: FAIL
-
-
-[location.tentative.https.window.html?include=from-treat-as-public]
-  [treat-as-public-address to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to local: success.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to private: success.]
-    expected: FAIL
-
-
-[location.tentative.https.window.html?include=from-local]
diff --git a/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.window.js.ini b/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.window.js.ini
deleted file mode 100644
index db5e79a6043..00000000000
--- a/tests/wpt/meta-legacy-layout/fetch/private-network-access/location.tentative.window.js.ini
+++ /dev/null
@@ -1,15 +0,0 @@
-[location.tentative.window.html]
-  [private to local: failure.]
-    expected: FAIL
-
-  [public to local: failure.]
-    expected: FAIL
-
-  [public to private: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to local: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failure.]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.https.window.js.ini b/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.https.window.js.ini
deleted file mode 100644
index 1ce4ab5bc4e..00000000000
--- a/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.https.window.js.ini
+++ /dev/null
@@ -1,36 +0,0 @@
-[top-location.tentative.https.window.html?include=from-local]
-
-[top-location.tentative.https.window.html?include=from-public]
-  [public to local: failed preflight.]
-    expected: FAIL
-
-  [public to local: success.]
-    expected: FAIL
-
-  [public to private: failed preflight.]
-    expected: FAIL
-
-  [public to private: success.]
-    expected: FAIL
-
-
-[top-location.tentative.https.window.html?include=from-private]
-  [private to local: failed preflight.]
-    expected: FAIL
-
-  [private to local: success.]
-    expected: FAIL
-
-
-[top-location.tentative.https.window.html?include=from-treat-as-public]
-  [treat-as-public-address to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to local: success.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to private: success.]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.window.js.ini b/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.window.js.ini
deleted file mode 100644
index 0abfc3f7b03..00000000000
--- a/tests/wpt/meta-legacy-layout/fetch/private-network-access/top-location.tentative.window.js.ini
+++ /dev/null
@@ -1,15 +0,0 @@
-[top-location.tentative.window.html]
-  [private to local: failure.]
-    expected: FAIL
-
-  [public to local: failure.]
-    expected: FAIL
-
-  [public to private: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to local: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failure.]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
index b8fd22e2b81..149bcb4ff8c 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
@@ -10,6 +10,3 @@
 
   [load & pageshow events do not fire on contentWindow of <iframe> element created with src='about:blank']
     expected: FAIL
-
-  [load & pageshow events do not fire on contentWindow of <iframe> element created with src='']
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
index f27acdd3b9d..8ae58f9f1e2 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-return-value-handling-dynamic.html.ini
@@ -4,3 +4,18 @@
 
   [Test javascript URL string return values in direct and indirect (target) frame contexts. 9]
     expected: FAIL
+
+  [0041 set in href="" targeting a frame and clicked]
+    expected: FAIL
+
+  [0080 00FF set in href="" targeting a frame and clicked]
+    expected: FAIL
+
+  [0080 00FF 0100 set in href="" targeting a frame and clicked]
+    expected: FAIL
+
+  [D83D DE0D set in href="" targeting a frame and clicked]
+    expected: FAIL
+
+  [DE0D 0041 set in href="" targeting a frame and clicked]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini
new file mode 100644
index 00000000000..60a4fa51f8a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini
@@ -0,0 +1,3 @@
+[a-click.html]
+  [aElement.click() before the load event must NOT replace]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index d6188c03424..00000000000
--- a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-font-size-math.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-font-size-math.html.ini
new file mode 100644
index 00000000000..addd810a23d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-font-size-math.html.ini
@@ -0,0 +1,2 @@
+[canvas.2d.disconnected-font-size-math.html]
+  expected: CRASH
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini
new file mode 100644
index 00000000000..bd5646ca17c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.arc.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini
new file mode 100644
index 00000000000..b16f7642c5b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.bezierCurve.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini
new file mode 100644
index 00000000000..a1f8bf3ca80
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.line.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini
new file mode 100644
index 00000000000..7ccc225dfa5
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.quadraticCurve.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/dom/aria-element-reflection.html.ini b/tests/wpt/meta-legacy-layout/html/dom/aria-element-reflection.html.ini
index 73f2decc09a..97904ee9a5b 100644
--- a/tests/wpt/meta-legacy-layout/html/dom/aria-element-reflection.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/dom/aria-element-reflection.html.ini
@@ -61,3 +61,6 @@
 
   [Cross-document references and moves.]
     expected: FAIL
+
+  [Passing values of the wrong type should throw a TypeError]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/dom/idlharness.https.html.ini b/tests/wpt/meta-legacy-layout/html/dom/idlharness.https.html.ini
index de7524f79ab..e4f1b2c2e47 100644
--- a/tests/wpt/meta-legacy-layout/html/dom/idlharness.https.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/dom/idlharness.https.html.ini
@@ -2042,6 +2042,9 @@
   [SVGSVGElement interface: attribute onpagereveal]
     expected: FAIL
 
+  [MessagePort interface: attribute onclose]
+    expected: FAIL
+
 
 [idlharness.https.html?include=(Document|Window)]
   [Document interface: documentWithHandlers must inherit property "queryCommandEnabled(DOMString)" with the proper type]
diff --git a/tests/wpt/meta-legacy-layout/html/dom/idlharness.worker.js.ini b/tests/wpt/meta-legacy-layout/html/dom/idlharness.worker.js.ini
index aaeb3cb9577..5da6b68d32c 100644
--- a/tests/wpt/meta-legacy-layout/html/dom/idlharness.worker.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/dom/idlharness.worker.js.ini
@@ -649,3 +649,6 @@
 
   [OffscreenCanvasRenderingContext2D interface: operation roundRect(unrestricted double, unrestricted double, unrestricted double, unrestricted double, optional (unrestricted double or DOMPointInit or sequence<(unrestricted double or DOMPointInit)>))]
     expected: FAIL
+
+  [MessagePort interface: attribute onclose]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html.ini b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html.ini
index 0cfee719c4e..9e6f4115b8c 100644
--- a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html.ini
@@ -1,7 +1,6 @@
 [document-with-fragment-empty.html]
-  expected: TIMEOUT
   [Autofocus elements in iframed documents with empty fragments should work.]
     expected: FAIL
 
   [Autofocus elements in top-level browsing context's documents with empty fragments should work.]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index 8acae84e1e4..d169bd2e9fa 100644
--- a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,5 +1,4 @@
 [supported-elements.html]
-  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
@@ -10,7 +9,7 @@
     expected: FAIL
 
   [Area element should support autofocus]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Host element with delegatesFocus should support autofocus]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/widgets/input-text-size.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/widgets/input-text-size.html.ini
new file mode 100644
index 00000000000..8aeb35c22e1
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/rendering/widgets/input-text-size.html.ini
@@ -0,0 +1,3 @@
+[input-text-size.html]
+  [Size attribute value affects computed style]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/widgets/textarea-cols-rows.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/widgets/textarea-cols-rows.html.ini
new file mode 100644
index 00000000000..721bdd39ab0
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/rendering/widgets/textarea-cols-rows.html.ini
@@ -0,0 +1,3 @@
+[textarea-cols-rows.html]
+  [Cols/rows attribute values affect computed style]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 2d3fbf0f308..7f5e282e3e2 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  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-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index 841bafc6eca..7df8f9458e9 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,3 +1,4 @@
 [iframe_sandbox_popups_escaping-2.html]
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index 6bec7a732b8..76e34322dca 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-2.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index d5fd800f09d..ff6467094b8 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js.ini
index 31928ad3947..3f9e0522fd4 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js.ini
@@ -1,10 +1,13 @@
 [sandbox-top-navigation-child-special-cases.tentative.sub.window.html]
   expected: TIMEOUT
   [Allow top with user activation + user activation]
-    expected: FAIL
+    expected: TIMEOUT
 
   [A cross-origin frame with frame sandbox flags can navigate top]
-    expected: FAIL
+    expected: NOTRUN
 
   [A cross-origin frame with delivered sandbox flags can not navigate top]
-    expected: FAIL
+    expected: NOTRUN
+
+  [allow-top-navigation-by-user-activation set but no sticky activation]
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/text-plain.window.js.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/text-plain.window.js.ini
index 91ad54bd932..5ff6874a86e 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/text-plain.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/text-plain.window.js.ini
@@ -158,9 +158,6 @@
   [text/plain: Basic test (formdata event)]
     expected: FAIL
 
-  [text/plain: 0x00 in name (normal form)]
-    expected: FAIL
-
   [text/plain: double quote in name (formdata event)]
     expected: FAIL
 
@@ -178,3 +175,9 @@
 
   [text/plain: single quote in name (normal form)]
     expected: FAIL
+
+  [text/plain: Basic File test (formdata event)]
+    expected: FAIL
+
+  [text/plain: single quote in value (formdata event)]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/select-parsing.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/select-parsing.tentative.html.ini
new file mode 100644
index 00000000000..b31f3485d6b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-select-element/select-parsing.tentative.html.ini
@@ -0,0 +1,18 @@
+[select-parsing.tentative.html]
+  [<button>s and <datalist>s should be allowed in <select>.]
+    expected: FAIL
+
+  [Nested <button>s in <select> should be flattened out.]
+    expected: FAIL
+
+  [</select> should close <button>.]
+    expected: FAIL
+
+  [</select> should close <datalist>.]
+    expected: FAIL
+
+  [<select> in <button> in <select> should remove inner <select>.]
+    expected: FAIL
+
+  [<select> in <select><button><div> should remove inner <select>.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
index 071b4378add..cc18f512574 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
@@ -11,3 +11,6 @@
 
   [Check that rel=noopener with target=_parent does a normal load]
     expected: FAIL
+
+  [Check that rel=noopener with target=_self does a normal load]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini
deleted file mode 100644
index 6339abba6d9..00000000000
--- a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[async-script.html?reload]
-  expected: ERROR
-
-[async-script.html?default]
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
index 9f98a2af558..2287365fc3d 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
@@ -1,4 +1,3 @@
 [parse-error.html]
-  expected: TIMEOUT
   [JSON modules: parse error]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
new file mode 100644
index 00000000000..b8bdf33cb65
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
@@ -0,0 +1,3 @@
+[DOMContentLoaded-defer.html]
+  [The end: DOMContentLoaded and defer scripts]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index 7d4c3a1b06d..e55f8f2ce3c 100644
--- a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -5,4 +5,4 @@
     expected: TIMEOUT
 
   [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
index 7237f5792de..dbe1def99e3 100644
--- a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
@@ -1,10 +1,9 @@
 [promise-job-entry-different-function-realm.html]
-  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Thenable resolution]
     expected: FAIL
@@ -13,4 +12,4 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini b/tests/wpt/meta-legacy-layout/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini
new file mode 100644
index 00000000000..d1d7bbbe965
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini
@@ -0,0 +1,2 @@
+[abort-block-bfcache.window.html]
+  expected: CRASH
diff --git a/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini b/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
index 71ca4ed5411..49b17a921b5 100644
--- a/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
+++ b/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
@@ -94,10 +94,10 @@
     expected: FAIL
 
   [mime-type 16 : text/html;charset=\x0bgbk]
-    expected: FAIL
+    expected: TIMEOUT
 
   [mime-type 17 : text/html;charset=\x0cgbk]
-    expected: TIMEOUT
+    expected: NOTRUN
 
   [mime-type 18 : text/html;\x0bcharset=gbk]
     expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.html.ini b/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.html.ini
index 12581463c49..86a2572b9b8 100644
--- a/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.html.ini
+++ b/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.html.ini
@@ -68,6 +68,3 @@
 
   [PerformanceEntry has correct protocol attribute (xmlhttprequest)]
     expected: FAIL
-
-  [PerformanceEntry has correct name, initiatorType, startTime, and duration (img)]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.https.html.ini b/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.https.html.ini
index 0baf5d404c2..32d149c8ae9 100644
--- a/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.https.html.ini
+++ b/tests/wpt/meta-legacy-layout/resource-timing/test_resource_timing.https.html.ini
@@ -69,3 +69,5 @@
   [PerformanceEntry has correct name, initiatorType, startTime, and duration (link)]
     expected: NOTRUN
 
+  [PerformanceEntry has correct name, initiatorType, startTime, and duration (img)]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini b/tests/wpt/meta-legacy-layout/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini
new file mode 100644
index 00000000000..350b1091baa
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini
@@ -0,0 +1,2 @@
+[selectall-and-find-svg-text-on-selectstart.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini b/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini
new file mode 100644
index 00000000000..c5b8f38cc86
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini
@@ -0,0 +1,2 @@
+[global-mutable-prototype.any.shadowrealm.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/webmessaging/without-ports/017.html.ini b/tests/wpt/meta-legacy-layout/webmessaging/with-ports/017.html.ini
similarity index 100%
rename from tests/wpt/meta-legacy-layout/webmessaging/without-ports/017.html.ini
rename to tests/wpt/meta-legacy-layout/webmessaging/with-ports/017.html.ini
diff --git a/tests/wpt/meta-legacy-layout/webmessaging/without-ports/018.html.ini b/tests/wpt/meta-legacy-layout/webmessaging/without-ports/018.html.ini
deleted file mode 100644
index b7b36c1d3a4..00000000000
--- a/tests/wpt/meta-legacy-layout/webmessaging/without-ports/018.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[018.html]
-  expected: TIMEOUT
-  [origin of the script that invoked the method, javascript:]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini b/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
new file mode 100644
index 00000000000..aa6c9e5b826
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
@@ -0,0 +1,4 @@
+[localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html]
+  expected: TIMEOUT
+  [StorageKey: test 3P about:blank window opened from a 3P iframe]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index 0a9e9a29c97..5264eba4e40 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -91,6 +91,13 @@
        {}
       ]
      ],
+     "aria-owns-overlapping.html": [
+      "e98ad6fb76ee8a140948955b5292d389d3596ed4",
+      [
+       null,
+       {}
+      ]
+     ],
      "aria-owns-reparent.html": [
       "2eaceb66f6957b0240a4f02b0c23b74e8ca4921a",
       [
@@ -1747,6 +1754,13 @@
         {}
        ]
       ],
+      "display-ruby-text-crash.html": [
+       "85ccd459af78d92c2f67aeae221a2ea48aa4c019",
+       [
+        null,
+        {}
+       ]
+      ],
       "hidden-execcommand-crash.html": [
        "67e297e6520b49325dd6091ca474c0151af5e0ea",
        [
@@ -5229,6 +5243,13 @@
        {}
       ]
      ],
+     "delete-in-block-in-progress.html": [
+      "233b834ab03ca7da9228fc3e293f91e5429a7e77",
+      [
+       null,
+       {}
+      ]
+     ],
      "delete-in-dd-editing-host-after-selectall-with-focus.html": [
       "585cd17bb82d8b763168cb14b52fe7d18ec457aa",
       [
@@ -5271,6 +5292,13 @@
        {}
       ]
      ],
+     "designMode-on-of-lazy-loading-iframe.html": [
+      "90a6c85c45c38ef8e106400dc0445e3fb582d13a",
+      [
+       null,
+       {}
+      ]
+     ],
      "execCommand-at-load-with-changing-editing-host.html": [
       "ec1dd30dc023205ce479df1038d08279c315ae62",
       [
@@ -7458,6 +7486,13 @@
    },
    "selection": {
     "crashtests": {
+     "selectall-and-find-svg-text-on-selectstart.html": [
+      "9f9dfbc9384aa5a330a4304f9c586f62983564ca",
+      [
+       null,
+       {}
+      ]
+     ],
      "selection-clip-crash.html": [
       "66d10b47424226f79f676a87288b667aed2911e1",
       [
@@ -7472,6 +7507,13 @@
        {}
       ]
      ],
+     "selection-modify-line-next-to-textarea.html": [
+      "b685add01c004885a32e22211acad17843f1d132",
+      [
+       null,
+       {}
+      ]
+     ],
      "selection-modify-per-word-in-table-header-group.html": [
       "66a57381eda5db2c3bba532cad9f9ef8423072f3",
       [
@@ -7836,6 +7878,13 @@
      }
     },
     "crashtests": {
+     "color-mix-crashtest.html": [
+      "91d29464f50d12985e791d889abfc482a188f767",
+      [
+       null,
+       {}
+      ]
+     ],
      "get-computed-timing-crash.html": [
       "b666eea91f67d1f26cbc88f1f26d4008ceb76af6",
       [
@@ -131723,6 +131772,32 @@
        {}
       ]
      ],
+     "inset-area-abs-inline-container.html": [
+      "52344614f0b31a57d470ab773420295e53f1cb49",
+      [
+       null,
+       [
+        [
+         "/css/css-anchor-position/inset-area-inline-container-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "inset-area-inline-container.html": [
+      "91c9b09735118e0d351af9531a91dd590ea4fde9",
+      [
+       null,
+       [
+        [
+         "/css/css-anchor-position/inset-area-inline-container-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "sticky-anchor-position-invalid.html": [
       "f7c1e1a374fbd8a10ab1b70f7b959c65a01ea993",
       [
@@ -160197,6 +160272,32 @@
        {}
       ]
      ],
+     "contain-layout-dynamic-004.html": [
+      "d3c9eb686066eb4681975aca26d9e5962456ee01",
+      [
+       null,
+       [
+        [
+         "/css/css-contain/contain-layout-dynamic-004-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "contain-layout-dynamic-005.html": [
+      "a430ae5181ba9c97e5f8620c763a9e332acff17f",
+      [
+       null,
+       [
+        [
+         "/css/css-contain/contain-layout-dynamic-005-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "contain-layout-flexbox-001.html": [
       "2b206edb57f46f3baa9dcfbcc24591b852cf8697",
       [
@@ -161217,6 +161318,32 @@
        {}
       ]
      ],
+     "contain-paint-dynamic-004.html": [
+      "8e286db8b107ad09bc9a846528c28d3a30d62de8",
+      [
+       null,
+       [
+        [
+         "/css/css-contain/contain-paint-dynamic-004-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "contain-paint-dynamic-005.html": [
+      "bedac635cec58218f53cd6137d23ca583d3fd0e9",
+      [
+       null,
+       [
+        [
+         "/css/css-contain/contain-paint-dynamic-005-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "contain-paint-formatting-context-float-001.html": [
       "95242072b100ca3f27203f2f9c6748e4dd7c89b4",
       [
@@ -196330,6 +196457,19 @@
         {}
        ]
       ],
+      "overflow-hidden-does-not-prohibit-subgrid.html": [
+       "b0c73e0e24e1ed4cc266d4ed9661cdf400599342",
+       [
+        null,
+        [
+         [
+          "/css/reference/ref-filled-green-100px-square-only.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "parent-repeat-auto-fit-001.html": [
        "8ecbccbea64320054f940d9c2e2d31dd028daa14",
        [
@@ -197012,6 +197152,132 @@
         }
        ]
       ],
+      "custom-highlight-dynamic-container-metrics-001.html": [
+       "2c28f7d132a68e3c76b255220ade6bc8312c5bd8",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "custom-highlight-dynamic-container-metrics-002.html": [
+       "1a0cbe87a557517125c18dba3cacf41705ff5071",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-container-metrics-002-ref.html",
+          "=="
+         ]
+        ],
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             60
+            ],
+            [
+             0,
+             25
+            ]
+           ]
+          ]
+         ]
+        }
+       ]
+      ],
+      "custom-highlight-dynamic-container-metrics-003.html": [
+       "38246a15affcaed2b1317a43b9c363fbd2cc6717",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-container-metrics-003-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "custom-highlight-dynamic-container-metrics-004.html": [
+       "fbdbea32efcbb742083298e05794a0afa931736d",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-container-metrics-003-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
+      "custom-highlight-dynamic-font-metrics-001.html": [
+       "4bddbc02a1da53cc441ddad5d6131cbdde5737b5",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-font-metrics-001-ref.html",
+          "=="
+         ]
+        ],
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             80
+            ],
+            [
+             0,
+             4
+            ]
+           ]
+          ]
+         ]
+        }
+       ]
+      ],
+      "custom-highlight-dynamic-logical-metrics-001.html": [
+       "ff52aed6ab174fa36d6cffaf92ba7aff05901ca5",
+       [
+        null,
+        [
+         [
+          "/css/css-highlight-api/painting/custom-highlight-logical-metrics-002-ref.html",
+          "=="
+         ]
+        ],
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             30
+            ],
+            [
+             0,
+             10
+            ]
+           ]
+          ]
+         ]
+        }
+       ]
+      ],
       "custom-highlight-font-metrics-001.html": [
        "755409c6b18d1585e3ba10896c3e7ee5537a05ea",
        [
@@ -213214,6 +213480,19 @@
         {}
        ]
       ],
+      "mask-image-svg-gradient-zoomed.html": [
+       "17d2869f6e4595361efee89501368d60f1e0508c",
+       [
+        null,
+        [
+         [
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@@ -448726,7 +449323,7 @@
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@@ -456364,7 +456961,7 @@
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@@ -456436,7 +457033,7 @@
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@@ -456504,7 +457101,7 @@
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@@ -456604,7 +457201,7 @@
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@@ -456828,11 +457425,11 @@
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@@ -456928,7 +457525,7 @@
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@@ -457471,7 +458068,7 @@
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@@ -459485,6 +460082,10 @@
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@@ -467787,6 +468402,10 @@
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@@ -471122,7 +471753,7 @@
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@@ -480789,6 +481420,42 @@
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@@ -480813,16 +481480,16 @@
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@@ -480845,6 +481512,10 @@
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@@ -483430,7 +484101,7 @@
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@@ -483456,6 +484127,12 @@
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@@ -484491,6 +485168,10 @@
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@@ -484875,6 +485556,20 @@
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@@ -567256,6 +568026,13 @@
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@@ -569243,6 +570020,17 @@
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         {}
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+      ],
+      "observable-toArray.any.js": [
+       "9e6e3abee561de07d814925a57873353ab0b32ae",
+       [
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+        {}
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+       [
+        "dom/observable/tentative/observable-toArray.any.worker.html",
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@@ -589785,7 +590573,7 @@
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         {
@@ -590904,18 +591692,14 @@
            "global",
            "window"
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+           "long"
+          ],
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            "Fetch API: keepalive handling"
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@@ -590928,7 +591712,8 @@
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@@ -592307,7 +593092,7 @@
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@@ -592324,14 +593109,6 @@
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@@ -594356,7 +595133,7 @@
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         {
@@ -594365,18 +595142,14 @@
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@@ -594389,12 +595162,13 @@
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@@ -598902,19 +599668,11 @@
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@@ -598944,21 +599702,10 @@
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@@ -599087,26 +599818,15 @@
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@@ -599140,7 +599852,7 @@
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@@ -599174,7 +599878,7 @@
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@@ -599214,19 +599910,11 @@
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@@ -599244,19 +599932,11 @@
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@@ -599287,19 +599967,11 @@
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@@ -602787,212 +603443,6 @@
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-     "aa0ff474e9737e6562ed597c7d75afb3e0cf8004",
-     [
-      null,
-      {
-       "testdriver": true
-      }
-     ]
-    ],
-    "RTCPeerConnection-insertable-streams-worker.https.html": [
-     "cb31057cac9f52b70122838a41456eb1484bfa5a",
-     [
-      null,
-      {
-       "testdriver": true
-      }
-     ]
-    ],
     "idlharness.https.window.js": [
      "2c6ef19ca82a56c799b97b5eb9af3edb900a40b5",
      [
@@ -757493,7 +759272,117 @@
       null,
       {}
      ]
-    ]
+    ],
+    "tentative": {
+     "RTCEncodedAudioFrame-clone.https.html": [
+      "9f07713d4439c676fd7a5cc2f7d32af92a350e19",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCEncodedAudioFrame-receive-cloned.https.html": [
+      "3077632a3b4408b2874b3345abfee511e4832710",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCEncodedAudioFrame-send-incoming.https.html": [
+      "02f3b17e0c271b7e5c6f1b25d5bbb12b6156c4f4",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCEncodedAudioFrame-serviceworker-failure.https.html": [
+      "b2f5f5e94c8ee19ef754213897a133d1fe06422e",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCEncodedVideoFrame-clone.https.html": [
+      "324c44f1934522f4dc21aef2cc56ddcca528373d",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCEncodedVideoFrame-serviceworker-failure.https.html": [
+      "e725e5ce12cec388270e9a10f760af77db7d402e",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-audio.https.html": [
+      "83d284146a0c438200c5fc168f9f0a800ba971bb",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-errors.https.html": [
+      "a0c68c400a291ffd5852a8ae1ee9dd58368a22c7",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-simulcast.https.html": [
+      "834644674e811cdd3e211ae9b658142036e009c4",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-video-frames.https.html": [
+      "d3db116ff603ffa59bcb0a2599cb446d321311f6",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-video.https.html": [
+      "5334b8d1f94a5e66caf39867c6f56283c9288070",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
+     "RTCPeerConnection-insertable-streams-worker.https.html": [
+      "94943f8b6960e474b28c27afc5c9e779c67ef08e",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ]
+    }
    },
    "webrtc-extensions": {
     "RTCOAuthCredential.html": [
@@ -802640,6 +804529,26 @@
         ]
        ]
       },
+      "external": {
+       "permissions": {
+        "set_permission": {
+         "invalid.py": [
+          "0ef8c57f4154e524ea95bea08454d914e0153f62",
+          [
+           null,
+           {}
+          ]
+         ],
+         "set_permission.py": [
+          "dc6ca14a8d5acab372581ace2290c298f02d7624",
+          [
+           null,
+           {}
+          ]
+         ]
+        }
+       }
+      },
       "input": {
        "perform_actions": {
         "invalid.py": [
@@ -802942,6 +804851,13 @@
           null,
           {}
          ]
+        ],
+        "request.py": [
+         "368e46ebe508c9a463e98f3f72a665b8144de51f",
+         [
+          null,
+          {}
+         ]
         ]
        },
        "fetch_error": {
@@ -803495,8 +805411,78 @@
       },
       "storage": {
        "set_cookie": {
-        "set_cookie.py": [
-         "7e4f3dbb9b0826d312b57b235432d8e99701b17d",
+        "cookie_domain.py": [
+         "ef09fb3f7b2221bb4fce85aacc6bc5dc30184483",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_expiry.py": [
+         "79f02d31060e93cc8a5887fcd83b46a8a32a0113",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_http_only.py": [
+         "f5e1bf9a3d18242bfc773455a4b964b1db8a53da",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_name.py": [
+         "f2d967534a21a19c6138c9ec8b8fb9394cd87f84",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_path.py": [
+         "2395b032a69e19b598e0379d6bfa8342b468656c",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_same_site.py": [
+         "05f4790a80e81fde20ee5f330f816413f335231e",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_secure.py": [
+         "6da5991c11d986e5aa6e3018b4b08186080fe171",
+         [
+          null,
+          {}
+         ]
+        ],
+        "cookie_value.py": [
+         "5ecd83545731b08753f9e58536517129562f8800",
+         [
+          null,
+          {}
+         ]
+        ],
+        "invalid.py": [
+         "9c3e5cbe1dd1e65cd4c77da7ab8d0ac57119b50e",
+         [
+          null,
+          {}
+         ]
+        ],
+        "page_protocols.py": [
+         "c021c2fc26e89532cc6acdc6b6ff96b61a3fde10",
+         [
+          null,
+          {}
+         ]
+        ],
+        "partition.py": [
+         "b7a4a052ca0b3dff8ec3521262ddd3d48d810d69",
          [
           null,
           {}
diff --git a/tests/wpt/meta/css/css-animations/animate-with-color-mix.html.ini b/tests/wpt/meta/css/css-animations/animate-with-color-mix.html.ini
new file mode 100644
index 00000000000..4172b4ec02b
--- /dev/null
+++ b/tests/wpt/meta/css/css-animations/animate-with-color-mix.html.ini
@@ -0,0 +1,18 @@
+[animate-with-color-mix.html]
+  [Animate from neutral keyframe with color-mix to legacy rgb]
+    expected: FAIL
+
+  [Animate from legacy rgb to neutral keyframe with color-mix]
+    expected: FAIL
+
+  [Animate from neutral keyframe with color-mix to srgb]
+    expected: FAIL
+
+  [Animate from srgb to neutral keyframe with color-mix]
+    expected: FAIL
+
+  [Animate from color-mix with transparency to legacy rgba]
+    expected: FAIL
+
+  [Animate from legacy rgba to color-mix with transparency]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-animations/animation-delay-010.html.ini b/tests/wpt/meta/css/css-animations/animation-delay-010.html.ini
index fc9b4b878cc..e163339dcde 100644
--- a/tests/wpt/meta/css/css-animations/animation-delay-010.html.ini
+++ b/tests/wpt/meta/css/css-animations/animation-delay-010.html.ini
@@ -1,2 +1,2 @@
 [animation-delay-010.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini b/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
index 6ca549e0935..718a1bf8f6b 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
@@ -3316,3 +3316,9 @@
 
   [Property color value 'color(from color(xyz-d65 7 -20.5 100 / 0.8) xyz-d65 calc(x + 1) calc(y + 1) calc(z + 1) / calc(alpha + 0.01))']
     expected: FAIL
+
+  [Property color value 'color(from color(srgb 0.25 0.5 0.75) xyz-d50 x y z)']
+    expected: FAIL
+
+  [Property color value 'color(from color(srgb 0.25 0.5 0.75) xyz-d65 x y z)']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-flexbox/dynamic-baseline-change.html.ini b/tests/wpt/meta/css/css-flexbox/dynamic-baseline-change.html.ini
deleted file mode 100644
index ea9b964da9e..00000000000
--- a/tests/wpt/meta/css/css-flexbox/dynamic-baseline-change.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[dynamic-baseline-change.html]
-  expected: FAIL
diff --git a/tests/wpt/meta/css/css-fonts/variations/at-font-face-font-matching.html.ini b/tests/wpt/meta/css/css-fonts/variations/at-font-face-font-matching.html.ini
index ec6ff4fc03e..b5b1ba2bd8c 100644
--- a/tests/wpt/meta/css/css-fonts/variations/at-font-face-font-matching.html.ini
+++ b/tests/wpt/meta/css/css-fonts/variations/at-font-face-font-matching.html.ini
@@ -74,9 +74,6 @@
   [Matching font-weight: '430' should prefer '500' over '400 425']
     expected: FAIL
 
-  [Matching font-style: 'normal' should prefer 'oblique 10deg 40deg' over 'oblique 20deg 30deg']
-    expected: FAIL
-
   [Matching font-style: 'oblique 20deg' should prefer 'oblique 0deg' over 'oblique -50deg -20deg']
     expected: FAIL
 
@@ -149,18 +146,12 @@
   [Matching font-style: 'italic' should prefer 'oblique 0deg' over 'oblique -60deg -30deg']
     expected: FAIL
 
-  [Matching font-style: 'oblique 10deg' should prefer 'italic' over 'oblique 0deg']
-    expected: FAIL
-
   [Matching font-style: 'oblique 0deg' should prefer 'oblique 40deg 50deg' over 'italic']
     expected: FAIL
 
   [Matching font-style: 'oblique -20deg' should prefer 'oblique -60deg -40deg' over 'oblique -10deg']
     expected: FAIL
 
-  [Matching font-style: 'oblique -21deg' should prefer 'oblique -10deg' over 'italic']
-    expected: FAIL
-
   [Matching font-weight: '501' should prefer '450 460' over '390 410']
     expected: FAIL
 
@@ -206,9 +197,6 @@
   [Matching font-style: 'oblique -21deg' should prefer 'italic' over 'oblique 0deg']
     expected: FAIL
 
-  [Matching font-stretch: '100%' should prefer '110% 120%' over '115% 116%']
-    expected: FAIL
-
   [Matching font-style: 'oblique 21deg' should prefer 'oblique 10deg' over 'italic']
     expected: FAIL
 
@@ -242,9 +230,6 @@
   [Matching font-stretch: '110%' should prefer '115% 116%' over '105%']
     expected: FAIL
 
-  [Matching font-style: 'italic' should prefer 'italic' over 'oblique 20deg']
-    expected: FAIL
-
   [Matching font-style: 'italic' should prefer 'oblique 20deg' over 'oblique 30deg 60deg']
     expected: FAIL
 
@@ -272,9 +257,6 @@
   [Matching font-style: 'oblique -20deg' should prefer 'oblique -10deg' over 'italic']
     expected: FAIL
 
-  [Matching font-weight: '430' should prefer '420 440' over '450 460']
-    expected: FAIL
-
   [Matching font-weight: '430' should prefer '350 399' over '340 398']
     expected: FAIL
 
@@ -295,3 +277,33 @@
 
   [Matching font-style: 'oblique -20deg' should prefer 'oblique 0deg' over 'oblique 30deg 60deg']
     expected: FAIL
+
+  [Matching font-weight: '400' should prefer '351 398' over '501 550']
+    expected: FAIL
+
+  [Matching font-weight: '500' should prefer '500' over '450 460']
+    expected: FAIL
+
+  [Matching font-weight: '500' should prefer '400' over '350 399']
+    expected: FAIL
+
+  [Matching font-stretch: '100%' should prefer '100%' over '110% 120%']
+    expected: FAIL
+
+  [Matching font-stretch: '110%' should prefer '105%' over '100%']
+    expected: FAIL
+
+  [Matching font-style: 'normal' should prefer 'oblique 20deg 30deg' over 'oblique -50deg -20deg']
+    expected: FAIL
+
+  [Matching font-style: 'italic' should prefer 'oblique 30deg 60deg' over 'oblique 40deg 50deg']
+    expected: FAIL
+
+  [Matching font-style: 'oblique 10deg' should prefer 'oblique 10deg' over 'oblique 5deg']
+    expected: FAIL
+
+  [Matching font-style: 'oblique -10deg' should prefer 'oblique -50deg -40deg' over 'italic']
+    expected: FAIL
+
+  [Matching font-style: 'oblique -20deg' should prefer 'oblique -20deg' over 'oblique -60deg -40deg']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini b/tests/wpt/meta/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini
new file mode 100644
index 00000000000..d33e4ce74ca
--- /dev/null
+++ b/tests/wpt/meta/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html.ini
@@ -0,0 +1,11 @@
+[text-spacing-trim-end-001.html?class=chws,vrl]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=chws,htb]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=halt,htb]
+  expected: FAIL
+
+[text-spacing-trim-end-001.html?class=halt,vrl]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini b/tests/wpt/meta/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini
new file mode 100644
index 00000000000..f63461815af
--- /dev/null
+++ b/tests/wpt/meta/css/css-text/text-transform/math/text-transform-math-auto-003.html.ini
@@ -0,0 +1,336 @@
+[text-transform-math-auto-003.html]
+  [Selection.toString() for math-auto 'A' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'B' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'C' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'D' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'E' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'F' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'G' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'H' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'I' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'J' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'K' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'L' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'M' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'N' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'O' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'P' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Q' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'R' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'S' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'T' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'U' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'V' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'W' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'X' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Y' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Z' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'a' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'b' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'c' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'd' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'e' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'f' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'g' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'h' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'i' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'j' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'k' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'l' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'm' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'n' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'o' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'p' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'q' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'r' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 's' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 't' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'u' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'v' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'w' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'x' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'y' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'z' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ı' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ȷ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Α' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Β' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Γ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Δ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ε' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ζ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Η' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Θ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ι' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Κ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Λ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Μ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ν' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ξ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ο' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Π' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ρ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Σ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Τ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Υ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Φ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Χ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ψ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'Ω' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'α' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'β' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'γ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'δ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ε' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ζ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'η' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'θ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ι' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'κ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'λ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'μ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ν' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ξ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ο' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'π' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ρ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ς' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'σ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'τ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'υ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'φ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'χ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ψ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ω' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϑ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϕ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϖ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϰ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϱ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϴ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto 'ϵ' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto '∂' returns the transformed character.]
+    expected: FAIL
+
+  [Selection.toString() for math-auto '∇' returns the transformed character.]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-text/text-transform/text-transform-upperlower-107.html.ini b/tests/wpt/meta/css/css-text/text-transform/text-transform-upperlower-107.html.ini
new file mode 100644
index 00000000000..afffdbf6c3b
--- /dev/null
+++ b/tests/wpt/meta/css/css-text/text-transform/text-transform-upperlower-107.html.ini
@@ -0,0 +1,3 @@
+[text-transform-upperlower-107.html]
+  [Selection.toString() for 'ß' with text-transform: uppercase]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-transitions/animations/animate-with-color-mix.html.ini b/tests/wpt/meta/css/css-transitions/animations/animate-with-color-mix.html.ini
new file mode 100644
index 00000000000..b195b0e5f61
--- /dev/null
+++ b/tests/wpt/meta/css/css-transitions/animations/animate-with-color-mix.html.ini
@@ -0,0 +1,18 @@
+[animate-with-color-mix.html]
+  [Transition from color-mix to legacy rgb]
+    expected: FAIL
+
+  [Transition from legacy rgb to color-mix]
+    expected: FAIL
+
+  [Transition from color-mix to srgb]
+    expected: FAIL
+
+  [Transition from srgb to color-mix]
+    expected: FAIL
+
+  [Transition from color-mix with transparency to legacy rgba]
+    expected: FAIL
+
+  [Transition from legacy rgba to color-mix with transparency]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini b/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
index a08341d7a0f..47102f89bf6 100644
--- a/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
+++ b/tests/wpt/meta/css/css-values/progress-computed.tentative.html.ini
@@ -55,3 +55,12 @@
 
   [calc(progress(sign(1001em - 10lh * progress(100px from 2rex to 10ex)) * 20em from 2rem to 12em) * 2) should be used-value-equivalent to 4]
     expected: FAIL
+
+  [calc(progress(abs(5%) from hypot(3%, 4%) to 10%)) should be used-value-equivalent to 0]
+    expected: FAIL
+
+  [progress(1000em from 10em to 110em) should be used-value-equivalent to 9.9]
+    expected: FAIL
+
+  [scale(progress(1000em from 10rem to 110em)) should be used-value-equivalent to scale(9.9)]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini b/tests/wpt/meta/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
index 314dca9c1f5..d52a3e77a70 100644
--- a/tests/wpt/meta/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
+++ b/tests/wpt/meta/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini
@@ -1,3 +1,6 @@
 [MediaQueryList-addListener-removeListener.html]
   [listeners are called when <iframe> is resized]
     expected: FAIL
+
+  [listeners are called correct number of times]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/selectors/has-display-none-checked.html.ini b/tests/wpt/meta/css/selectors/has-display-none-checked.html.ini
new file mode 100644
index 00000000000..17279e47d6c
--- /dev/null
+++ b/tests/wpt/meta/css/selectors/has-display-none-checked.html.ini
@@ -0,0 +1,2 @@
+[has-display-none-checked.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/css/selectors/invalidation/has-append-first-node.html.ini b/tests/wpt/meta/css/selectors/invalidation/has-append-first-node.html.ini
new file mode 100644
index 00000000000..ae43158a3da
--- /dev/null
+++ b/tests/wpt/meta/css/selectors/invalidation/has-append-first-node.html.ini
@@ -0,0 +1,2 @@
+[has-append-first-node.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/selectors/invalidation/has-sibling-insertion-removal.html.ini b/tests/wpt/meta/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
index 78fdcc66a68..3fc80bbf3b9 100644
--- a/tests/wpt/meta/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
+++ b/tests/wpt/meta/css/selectors/invalidation/has-sibling-insertion-removal.html.ini
@@ -37,3 +37,6 @@
 
   [subject13: color after #sibling12_1 removed should be rgb(0, 128, 0)]
     expected: FAIL
+
+  [subject14: initial color should be rgb(0, 128, 0)]
+    expected: FAIL
diff --git a/tests/wpt/meta/dom/events/scrolling/scrollend-fires-to-text-input.html.ini b/tests/wpt/meta/dom/events/scrolling/scrollend-fires-to-text-input.html.ini
new file mode 100644
index 00000000000..29dfee6fbdb
--- /dev/null
+++ b/tests/wpt/meta/dom/events/scrolling/scrollend-fires-to-text-input.html.ini
@@ -0,0 +1,4 @@
+[scrollend-fires-to-text-input.html]
+  expected: TIMEOUT
+  [scrolled input field should receive scrollend.]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/dom/observable/tentative/observable-toArray.any.js.ini b/tests/wpt/meta/dom/observable/tentative/observable-toArray.any.js.ini
new file mode 100644
index 00000000000..bcc49663221
--- /dev/null
+++ b/tests/wpt/meta/dom/observable/tentative/observable-toArray.any.js.ini
@@ -0,0 +1,38 @@
+[observable-toArray.any.worker.html]
+  [toArray(): basic next/complete]
+    expected: FAIL
+
+  [toArray(): first error() rejects promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): complete() resolves promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): Subscribing with an aborted signal returns an immediately rejected promise]
+    expected: FAIL
+
+  [toArray(): Aborting the passed-in signal rejects the returned promise]
+    expected: FAIL
+
+  [Operator Promise abort ordering]
+    expected: FAIL
+
+
+[observable-toArray.any.html]
+  [toArray(): basic next/complete]
+    expected: FAIL
+
+  [toArray(): first error() rejects promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): complete() resolves promise; subsequent error()s report the exceptions]
+    expected: FAIL
+
+  [toArray(): Subscribing with an aborted signal returns an immediately rejected promise]
+    expected: FAIL
+
+  [toArray(): Aborting the passed-in signal rejects the returned promise]
+    expected: FAIL
+
+  [Operator Promise abort ordering]
+    expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/basic/keepalive.any.js.ini b/tests/wpt/meta/fetch/api/basic/keepalive.any.js.ini
index 4c1c78640bb..9aa4b06752c 100644
--- a/tests/wpt/meta/fetch/api/basic/keepalive.any.js.ini
+++ b/tests/wpt/meta/fetch/api/basic/keepalive.any.js.ini
@@ -2,3 +2,18 @@
   expected: TIMEOUT
   [keepalive in onunload in nested frame in another window]
     expected: FAIL
+
+  [[keepalive\] simple GET request on 'pagehide' [no payload\]; setting up]
+    expected: TIMEOUT
+
+  [[keepalive\] simple GET request on 'unload' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'load' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'pagehide' [no payload\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] simple POST request on 'unload' [no payload\]; setting up]
+    expected: NOTRUN
diff --git a/tests/wpt/meta/fetch/api/cors/cors-keepalive.any.js.ini b/tests/wpt/meta/fetch/api/cors/cors-keepalive.any.js.ini
index 6801d7d88bd..9f657f6abc0 100644
--- a/tests/wpt/meta/fetch/api/cors/cors-keepalive.any.js.ini
+++ b/tests/wpt/meta/fetch/api/cors/cors-keepalive.any.js.ini
@@ -1,2 +1,121 @@
 [cors-keepalive.any.html]
   expected: TIMEOUT
+  [[keepalive\] Same domain different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: TIMEOUT
+
+  [[keepalive\] Same domain different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol GET request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Same domain different protocol different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain basic usage POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different port POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [no-cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [no-cors mode\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [cors mode, server forbid CORS\]; setting up]
+    expected: NOTRUN
+
+  [[keepalive\] Cross domain different protocol POST request in unload [cors mode\]; setting up]
+    expected: NOTRUN
diff --git a/tests/wpt/meta/fetch/private-network-access/location.tentative.https.window.js.ini b/tests/wpt/meta/fetch/private-network-access/location.tentative.https.window.js.ini
deleted file mode 100644
index bcbf60fdf3d..00000000000
--- a/tests/wpt/meta/fetch/private-network-access/location.tentative.https.window.js.ini
+++ /dev/null
@@ -1,36 +0,0 @@
-[location.tentative.https.window.html?include=from-private]
-  [private to local: failed preflight.]
-    expected: FAIL
-
-  [private to local: success.]
-    expected: FAIL
-
-
-[location.tentative.https.window.html?include=from-local]
-
-[location.tentative.https.window.html?include=from-public]
-  [public to local: failed preflight.]
-    expected: FAIL
-
-  [public to local: success.]
-    expected: FAIL
-
-  [public to private: failed preflight.]
-    expected: FAIL
-
-  [public to private: success.]
-    expected: FAIL
-
-
-[location.tentative.https.window.html?include=from-treat-as-public]
-  [treat-as-public-address to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to local: success.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to private: success.]
-    expected: FAIL
diff --git a/tests/wpt/meta/fetch/private-network-access/location.tentative.window.js.ini b/tests/wpt/meta/fetch/private-network-access/location.tentative.window.js.ini
deleted file mode 100644
index db5e79a6043..00000000000
--- a/tests/wpt/meta/fetch/private-network-access/location.tentative.window.js.ini
+++ /dev/null
@@ -1,15 +0,0 @@
-[location.tentative.window.html]
-  [private to local: failure.]
-    expected: FAIL
-
-  [public to local: failure.]
-    expected: FAIL
-
-  [public to private: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to local: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failure.]
-    expected: FAIL
diff --git a/tests/wpt/meta/fetch/private-network-access/top-location.tentative.https.window.js.ini b/tests/wpt/meta/fetch/private-network-access/top-location.tentative.https.window.js.ini
deleted file mode 100644
index f14d2bd8475..00000000000
--- a/tests/wpt/meta/fetch/private-network-access/top-location.tentative.https.window.js.ini
+++ /dev/null
@@ -1,36 +0,0 @@
-[top-location.tentative.https.window.html?include=from-treat-as-public]
-  [treat-as-public-address to local: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to local: success.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failed preflight.]
-    expected: FAIL
-
-  [treat-as-public-address to private: success.]
-    expected: FAIL
-
-
-[top-location.tentative.https.window.html?include=from-local]
-
-[top-location.tentative.https.window.html?include=from-public]
-  [public to local: failed preflight.]
-    expected: FAIL
-
-  [public to local: success.]
-    expected: FAIL
-
-  [public to private: failed preflight.]
-    expected: FAIL
-
-  [public to private: success.]
-    expected: FAIL
-
-
-[top-location.tentative.https.window.html?include=from-private]
-  [private to local: failed preflight.]
-    expected: FAIL
-
-  [private to local: success.]
-    expected: FAIL
diff --git a/tests/wpt/meta/fetch/private-network-access/top-location.tentative.window.js.ini b/tests/wpt/meta/fetch/private-network-access/top-location.tentative.window.js.ini
deleted file mode 100644
index 0abfc3f7b03..00000000000
--- a/tests/wpt/meta/fetch/private-network-access/top-location.tentative.window.js.ini
+++ /dev/null
@@ -1,15 +0,0 @@
-[top-location.tentative.window.html]
-  [private to local: failure.]
-    expected: FAIL
-
-  [public to local: failure.]
-    expected: FAIL
-
-  [public to private: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to local: failure.]
-    expected: FAIL
-
-  [treat-as-public-address to private: failure.]
-    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html.ini
index f2dee7b3ea9..eaebad750fe 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/history-traversal/srcdoc/consecutive-srcdoc.html.ini
@@ -1,6 +1,7 @@
 [consecutive-srcdoc.html]
+  expected: TIMEOUT
   [changing srcdoc does a replace navigation since the URL is still about:srcdoc]
     expected: FAIL
 
   [changing srcdoc to about:srcdoc#yo then another srcdoc does two push navigations and we can navigate back]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js.ini
index ea9cbb0b4de..4f8ca6048f2 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/about-srcdoc-navigation-blocked.window.js.ini
@@ -1,5 +1,4 @@
 [about-srcdoc-navigation-blocked.window.html]
-  expected: TIMEOUT
   [Navigations to about:srcdoc via window.location must be blocked]
     expected: FAIL
 
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
index 149bcb4ff8c..51fd557bd7f 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html.ini
@@ -7,6 +7,3 @@
 
   [load & pageshow events do not fire on contentWindow of <iframe> element created with src='about:blank#foo']
     expected: FAIL
-
-  [load & pageshow events do not fire on contentWindow of <iframe> element created with src='about:blank']
-    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
index 24d2f8ac554..27889a98fb5 100644
--- a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigate-to-unparseable-url.html.ini
@@ -1,3 +1,6 @@
 [navigate-to-unparseable-url.html]
   [location.href setter throws a SyntaxError DOMException for unparseable URLs]
     expected: FAIL
+
+  [<a> tag navigate fails for unparseable URLs]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
similarity index 100%
rename from tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
rename to tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
diff --git a/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index d6188c03424..00000000000
--- a/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini b/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
similarity index 71%
rename from tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
rename to tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
index a03a8322165..7a5fcb79165 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
+++ b/tests/wpt/meta/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
@@ -1,3 +1,3 @@
-[traverse_the_history_3.html]
+[traverse_the_history_5.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini b/tests/wpt/meta/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
deleted file mode 100644
index 4b4820d1729..00000000000
--- a/tests/wpt/meta/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[creating_browsing_context_test_01.html]
-  [first argument: absolute url]
-    expected: FAIL
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html.ini
new file mode 100644
index 00000000000..8b161ec63e7
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.arc.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini
new file mode 100644
index 00000000000..bd5646ca17c
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.arc.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html.ini
new file mode 100644
index 00000000000..c64dd8daf6f
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.bezierCurve.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini
new file mode 100644
index 00000000000..b16f7642c5b
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.bezierCurve.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html.ini
new file mode 100644
index 00000000000..88b996cd49f
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.line.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini
new file mode 100644
index 00000000000..a1f8bf3ca80
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.line.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html.ini
new file mode 100644
index 00000000000..27e16f3b0b3
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.quadraticCurve.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini
new file mode 100644
index 00000000000..7ccc225dfa5
--- /dev/null
+++ b/tests/wpt/meta/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html.ini
@@ -0,0 +1,2 @@
+[2d.path.stroke.prune.closePath.quadraticCurve.w.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/html/dom/aria-element-reflection.html.ini b/tests/wpt/meta/html/dom/aria-element-reflection.html.ini
index 73f2decc09a..97904ee9a5b 100644
--- a/tests/wpt/meta/html/dom/aria-element-reflection.html.ini
+++ b/tests/wpt/meta/html/dom/aria-element-reflection.html.ini
@@ -61,3 +61,6 @@
 
   [Cross-document references and moves.]
     expected: FAIL
+
+  [Passing values of the wrong type should throw a TypeError]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/dom/idlharness.https.html.ini b/tests/wpt/meta/html/dom/idlharness.https.html.ini
index 3c7048902d9..bb0a910c04e 100644
--- a/tests/wpt/meta/html/dom/idlharness.https.html.ini
+++ b/tests/wpt/meta/html/dom/idlharness.https.html.ini
@@ -1928,6 +1928,9 @@
   [SVGSVGElement interface: attribute onpagereveal]
     expected: FAIL
 
+  [MessagePort interface: attribute onclose]
+    expected: FAIL
+
 
 [idlharness.https.html?include=(Document|Window)]
   [Document interface: documentWithHandlers must inherit property "queryCommandEnabled(DOMString)" with the proper type]
diff --git a/tests/wpt/meta/html/dom/idlharness.worker.js.ini b/tests/wpt/meta/html/dom/idlharness.worker.js.ini
index 6436e807907..23f20a6d996 100644
--- a/tests/wpt/meta/html/dom/idlharness.worker.js.ini
+++ b/tests/wpt/meta/html/dom/idlharness.worker.js.ini
@@ -604,3 +604,6 @@
 
   [WorkerGlobalScope interface: self must inherit property "createImageBitmap(ImageBitmapSource, long, long, long, long, optional ImageBitmapOptions)" with the proper type]
     expected: FAIL
+
+  [MessagePort interface: attribute onclose]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini b/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
index 2ef0896e3b3..8b8af2b9c2e 100644
--- a/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
+++ b/tests/wpt/meta/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
@@ -1,4 +1,3 @@
 [document-base-url-window-initiator-is-not-opener.https.window.html]
-  expected: TIMEOUT
   [window.open() gets base url from initiator not opener.]
     expected: [FAIL, PASS, TIMEOUT]
diff --git a/tests/wpt/meta/html/rendering/widgets/textarea-cols-rows.html.ini b/tests/wpt/meta/html/rendering/widgets/textarea-cols-rows.html.ini
new file mode 100644
index 00000000000..721bdd39ab0
--- /dev/null
+++ b/tests/wpt/meta/html/rendering/widgets/textarea-cols-rows.html.ini
@@ -0,0 +1,3 @@
+[textarea-cols-rows.html]
+  [Cols/rows attribute values affect computed style]
+    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 7d28d586f51..f455bb20528 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: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index c6f1e5d7d84..4034793cc72 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-2.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index d5fd800f09d..ff6467094b8 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-slow.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-slow.html.ini
new file mode 100644
index 00000000000..b4de496f4a0
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-slow.html.ini
@@ -0,0 +1,2 @@
+[image-loading-lazy-slow.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini b/tests/wpt/meta/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
index c6c406d911d..35e8c2c7cb4 100644
--- a/tests/wpt/meta/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
+++ b/tests/wpt/meta/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
@@ -179,8 +179,5 @@
   [multipart/form-data: backslash in value (formdata event)]
     expected: FAIL
 
-  [multipart/form-data: 0x00 in name (normal form)]
-    expected: FAIL
-
   [multipart/form-data: \\r\\n in value (normal form)]
     expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini b/tests/wpt/meta/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
index 44ea234c7c4..077ecbcf187 100644
--- a/tests/wpt/meta/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
+++ b/tests/wpt/meta/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
@@ -181,3 +181,6 @@
 
   [application/x-www-form-urlencoded: backslash in value (normal form)]
     expected: FAIL
+
+  [application/x-www-form-urlencoded: 0x00 in value (formdata event)]
+    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/forms/the-select-element/select-parsing.tentative.html.ini b/tests/wpt/meta/html/semantics/forms/the-select-element/select-parsing.tentative.html.ini
new file mode 100644
index 00000000000..b31f3485d6b
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/forms/the-select-element/select-parsing.tentative.html.ini
@@ -0,0 +1,18 @@
+[select-parsing.tentative.html]
+  [<button>s and <datalist>s should be allowed in <select>.]
+    expected: FAIL
+
+  [Nested <button>s in <select> should be flattened out.]
+    expected: FAIL
+
+  [</select> should close <button>.]
+    expected: FAIL
+
+  [</select> should close <datalist>.]
+    expected: FAIL
+
+  [<select> in <button> in <select> should remove inner <select>.]
+    expected: FAIL
+
+  [<select> in <select><button><div> should remove inner <select>.]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini b/tests/wpt/meta/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
index 9f98a2af558..2287365fc3d 100644
--- a/tests/wpt/meta/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
+++ b/tests/wpt/meta/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html.ini
@@ -1,4 +1,3 @@
 [parse-error.html]
-  expected: TIMEOUT
   [JSON modules: parse error]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/meta/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index 6206f8c0210..1053fb90051 100644
--- a/tests/wpt/meta/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/meta/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -2,3 +2,6 @@
   expected: TIMEOUT
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
+
+  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
+    expected: FAIL
diff --git a/tests/wpt/meta/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini b/tests/wpt/meta/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini
new file mode 100644
index 00000000000..d1d7bbbe965
--- /dev/null
+++ b/tests/wpt/meta/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js.ini
@@ -0,0 +1,2 @@
+[abort-block-bfcache.window.html]
+  expected: CRASH
diff --git a/tests/wpt/meta/resource-timing/test_resource_timing.https.html.ini b/tests/wpt/meta/resource-timing/test_resource_timing.https.html.ini
index 5a2e10ff69c..dac51c99110 100644
--- a/tests/wpt/meta/resource-timing/test_resource_timing.https.html.ini
+++ b/tests/wpt/meta/resource-timing/test_resource_timing.https.html.ini
@@ -68,3 +68,6 @@
 
   [PerformanceEntry has correct protocol attribute (xmlhttprequest)]
     expected: FAIL
+
+  [PerformanceEntry has correct name, initiatorType, startTime, and duration (img)]
+    expected: FAIL
diff --git a/tests/wpt/meta/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini b/tests/wpt/meta/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini
new file mode 100644
index 00000000000..350b1091baa
--- /dev/null
+++ b/tests/wpt/meta/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html.ini
@@ -0,0 +1,2 @@
+[selectall-and-find-svg-text-on-selectstart.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini b/tests/wpt/meta/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini
new file mode 100644
index 00000000000..c5b8f38cc86
--- /dev/null
+++ b/tests/wpt/meta/webidl/ecmascript-binding/global-mutable-prototype.any.js.ini
@@ -0,0 +1,2 @@
+[global-mutable-prototype.any.shadowrealm.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/webmessaging/with-ports/017.html.ini b/tests/wpt/meta/webmessaging/with-ports/017.html.ini
deleted file mode 100644
index c7946fc91b4..00000000000
--- a/tests/wpt/meta/webmessaging/with-ports/017.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[017.html]
-  expected: TIMEOUT
-  [origin of the script that invoked the method, about:blank]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta/workers/semantics/run-a-worker/003.html.ini b/tests/wpt/meta/workers/semantics/run-a-worker/003.html.ini
index 365a9046674..89e55870b76 100644
--- a/tests/wpt/meta/workers/semantics/run-a-worker/003.html.ini
+++ b/tests/wpt/meta/workers/semantics/run-a-worker/003.html.ini
@@ -1,4 +1,3 @@
 [003.html]
-  expected: ERROR
   [shared]
     expected: FAIL
diff --git a/tests/wpt/tests/accessibility/crashtests/aria-owns-overlapping.html b/tests/wpt/tests/accessibility/crashtests/aria-owns-overlapping.html
new file mode 100644
index 00000000000..e98ad6fb76e
--- /dev/null
+++ b/tests/wpt/tests/accessibility/crashtests/aria-owns-overlapping.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- Test that multiple overlapping aria-owns relation do not crash -->
+
+<html class="test-wait">
+<main id='great-grandparent'>
+  <fieldset id="grandparent">
+    <p id='parent'>
+      <i id='child'></i>
+    </p>
+  </fieldset>
+</main>
+
+<script>
+document.addEventListener("DOMContentLoaded", () => {
+  document.getElementById('child').setAttribute('aria-owns','grandparent');
+  document.getElementById('great-grandparent').setAttribute('aria-owns','parent');
+  requestAnimationFrame(() => {
+    requestAnimationFrame(() => {
+      document.documentElement.style.display="none";
+      document.documentElement.className = '';
+    });
+  });
+});
+</script>
+</html>
diff --git a/tests/wpt/tests/content-security-policy/reporting/report-same-origin-with-cookies.html b/tests/wpt/tests/content-security-policy/reporting/report-same-origin-with-cookies.html
index aa2ec6bd9d4..1fde8d0ffd1 100644
--- a/tests/wpt/tests/content-security-policy/reporting/report-same-origin-with-cookies.html
+++ b/tests/wpt/tests/content-security-policy/reporting/report-same-origin-with-cookies.html
@@ -15,11 +15,15 @@
     "/cookies/resources/set-cookie.py?name=cspViolationReportCookie2&path=" + encodeURIComponent("/"),
     {mode: 'no-cors', credentials: 'include'})
   .then(() => {
-    test.add_cleanup(() => {
-      document.cookie = "cspViolationReportCookie2=; path=/; expires=Thu, 01 Jan 1970 00:00:01 GMT";
-    });
-
-    // This image will generate a CSP violation report.
+    // Loading `img` will generate a CSP violation report.
+    // As this test is for covering the behavior of the deprecated "report-uri" directive [1], the
+    // underlying report is backed by a browser-initiated fetch "keepalive" request [2]. Per
+    // keepalive spec [3], such request may outlive this entire document itself. Hence, the cookie
+    // this test wants to test, i.e. "cspViolationReportCookie2", must NOT be cleared before the
+    // browser entirely sending out the report request.
+    // [1]: https://www.w3.org/TR/CSP3/#report-uri
+    // [2]: https://www.w3.org/TR/CSP3/#report-violation
+    // [3]: https://fetch.spec.whatwg.org/#request-keepalive-flag
     const img = new Image();
     img.onerror = test.step_func_done();
     img.onload = test.unreached_func("Should not have loaded the image");
diff --git a/tests/wpt/tests/credential-management/fedcm-endpoint-redirects.https.html b/tests/wpt/tests/credential-management/fedcm-endpoint-redirects.https.html
index 224868c906c..cff5036f393 100644
--- a/tests/wpt/tests/credential-management/fedcm-endpoint-redirects.https.html
+++ b/tests/wpt/tests/credential-management/fedcm-endpoint-redirects.https.html
@@ -40,7 +40,8 @@ fedcm_test(async t => {
   } catch (e) {
     assert_true(e instanceof DOMException);
     assert_equals(e.name, "IdentityCredentialError");
-    assert_equals(e.code, "server_error");
+    // 308 should not produce a valid error code
+    assert_equals(e.code, "");
   }
 }, 'Test that token endpoint does not follow redirects');
 </script>
diff --git a/tests/wpt/tests/credential-management/fedcm-login-status/cross-origin-status.https.html b/tests/wpt/tests/credential-management/fedcm-login-status/cross-origin-status.https.html
index 09a4aa31c6b..f32e18d40ed 100644
--- a/tests/wpt/tests/credential-management/fedcm-login-status/cross-origin-status.https.html
+++ b/tests/wpt/tests/credential-management/fedcm-login-status/cross-origin-status.https.html
@@ -9,15 +9,35 @@
 <script type="module">
 import {fedcm_test,
         alt_manifest_origin,
+        same_site_manifest_origin,
+        set_fedcm_cookie,
+        select_manifest,
+        request_options_with_mediation_required,
         alt_request_options_with_mediation_required,
+        fedcm_get_and_select_first_account,
         open_and_wait_for_popup,
         mark_signed_out} from '../support/fedcm-helper.sub.js';
 
-const url_prefix = alt_manifest_origin + '/credential-management/support/';
+const path = '/credential-management/support/'
+const url_prefix = alt_manifest_origin + path;
+const same_site_url_prefix = same_site_manifest_origin + path;
+
+fedcm_test(async t => {
+  await set_fedcm_cookie(same_site_manifest_origin);
+  await mark_signed_out(same_site_manifest_origin);
+  // The header should be processed successfully because it is same-site.
+  const fetch_result = await fetch(same_site_url_prefix + "mark_signedin");
+  assert_true(fetch_result.ok);
+
+  const config = request_options_with_mediation_required(undefined, same_site_manifest_origin);
+  await select_manifest(t, config);
+  const cred = await fedcm_get_and_select_first_account(t, config);
+  assert_equals(cred.token, "token");
+}, 'Cross-origin same-site status header should work from fetch()');
 
 fedcm_test(async t => {
   await mark_signed_out(alt_manifest_origin);
-  // The header should be ignored because it's a cross-origin fetch.
+  // The header should be ignored because it's a cross-site fetch.
   const fetch_result = await fetch(url_prefix + "mark_signedin");
   assert_true(fetch_result.ok);
 
@@ -28,7 +48,7 @@ fedcm_test(async t => {
 
 fedcm_test(async t => {
   await mark_signed_out(alt_manifest_origin);
-  // The header should be ignored because it's a cross-origin iframe.
+  // The header should be ignored because it's a cross-site iframe.
   let iframe = document.createElement("iframe");
   let iframe_load = new Promise(resolve => {iframe.onload = resolve;});
   iframe.src = url_prefix + "mark_signedin";
@@ -38,11 +58,11 @@ fedcm_test(async t => {
   const config = alt_request_options_with_mediation_required();
   const result = navigator.credentials.get(config);
   return promise_rejects_dom(t, 'NetworkError', result);
-}, 'Status header should be ignored from cross-origin iframe');
+}, 'Status header should be ignored from cross-site iframe');
 
 fedcm_test(async t => {
   await mark_signed_out(alt_manifest_origin);
-  // The header in the subresource should be ignored because the iframe is cross-origin.
+  // The header in the subresource should be ignored because the iframe is cross-site.
   let iframe = document.createElement("iframe");
   let iframe_load = new Promise(resolve => {iframe.onload = resolve;});
   iframe.src = url_prefix + "iframe-mark-signedin.html";
@@ -52,7 +72,7 @@ fedcm_test(async t => {
   const config = alt_request_options_with_mediation_required();
   const result = navigator.credentials.get(config);
   return promise_rejects_dom(t, 'NetworkError', result);
-}, 'Status header should be ignored from cross-origin iframe that contains a subresource with the header');
+}, 'Status header should be ignored from cross-site iframe that contains a subresource with the header');
 
 fedcm_test(async t => {
   await mark_signed_out(alt_manifest_origin);
diff --git a/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
index 38cc26604ba..765b3cc48a9 100644
--- a/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
+++ b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
@@ -1,5 +1,6 @@
 export const manifest_origin = "https://{{host}}:{{ports[https][0]}}";
 export const alt_manifest_origin = 'https://{{hosts[alt][]}}:{{ports[https][0]}}';
+export const same_site_manifest_origin = 'https://{{hosts[][www1]}}:{{ports[https][0]}}';
 
 export function open_and_wait_for_popup(origin, path) {
   return new Promise(resolve => {
@@ -43,11 +44,11 @@ export function mark_signed_out(origin = manifest_origin) {
 
 // Returns FedCM CredentialRequestOptions for which navigator.credentials.get()
 // succeeds.
-export function request_options_with_mediation_required(manifest_filename) {
+export function request_options_with_mediation_required(manifest_filename, origin = manifest_origin) {
   if (manifest_filename === undefined) {
     manifest_filename = "manifest.py";
   }
-  const manifest_path = `${manifest_origin}/\
+  const manifest_path = `${origin}/\
 credential-management/support/fedcm/${manifest_filename}`;
   return {
     identity: {
@@ -64,21 +65,7 @@ credential-management/support/fedcm/${manifest_filename}`;
 // Returns alternate FedCM CredentialRequestOptions for which navigator.credentials.get()
 // succeeds.
 export function alt_request_options_with_mediation_required(manifest_filename) {
-  if (manifest_filename === undefined) {
-    manifest_filename = "manifest.py";
-  }
-  const manifest_path = `${alt_manifest_origin}/\
-credential-management/support/fedcm/${manifest_filename}`;
-  return {
-    identity: {
-      providers: [{
-        configURL: manifest_path,
-        clientId: '1',
-        nonce: '2'
-      }]
-    },
-    mediation: 'required'
-  };
+  return request_options_with_mediation_required(manifest_filename, alt_manifest_origin);
 }
 
 // Returns FedCM CredentialRequestOptions with auto re-authentication.
diff --git a/tests/wpt/tests/css/css-anchor-position/inset-area-abs-inline-container.html b/tests/wpt/tests/css/css-anchor-position/inset-area-abs-inline-container.html
new file mode 100644
index 00000000000..52344614f0b
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/inset-area-abs-inline-container.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: inset-area positioning with absolute inline container</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position/#inset-area">
+<link rel="match" href="inset-area-inline-container-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+<style>
+  #in-flow {
+    font-family: Ahem;
+    font-size: 100px;
+    color: orange;
+  }
+  #inline-container {
+    position: absolute;
+  }
+  #anchor {
+    position: absolute;
+    top: 25px;
+    left: 100px;
+    width: 200px;
+    height: 50px;
+    anchor-name: --anchor;
+    background-color: cyan;
+  }
+  .anchored {
+    position: absolute;
+    align-self: stretch;
+    justify-self: stretch;
+    anchor-default: --anchor;
+    background-color: blue;
+  }
+  #top-left { inset-area: top / left; }
+  #top-right { inset-area: top / right; }
+  #bottom-left { inset-area: bottom / left; }
+  #bottom-right { inset-area: bottom / right; }
+</style>
+<div id="in-flow">
+  <br>
+  <br>
+  &nbsp;&nbsp;<span id="inline-container">XXXX<span id="anchor"></span><div id="top-left" class="anchored"></div><div id="top-right" class="anchored"></div><div id="bottom-left" class="anchored"></div><div id="bottom-right" class="anchored"></div></span>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/inset-area-basic.html b/tests/wpt/tests/css/css-anchor-position/inset-area-basic.html
index dcb2c153308..4a636355583 100644
--- a/tests/wpt/tests/css/css-anchor-position/inset-area-basic.html
+++ b/tests/wpt/tests/css/css-anchor-position/inset-area-basic.html
@@ -29,6 +29,8 @@
   }
   #anchored {
     position: absolute;
+    align-self: stretch;
+    justify-self: stretch;
     anchor-default: --anchor;
   }
   #anchor {
diff --git a/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container-ref.html b/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container-ref.html
new file mode 100644
index 00000000000..ecf54f1a9ac
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>CSS Test Reference</title>
+<div style="position:relative">
+  <!-- The Ahem 'XXXX' text: -->
+  <div style="position:absolute; background-color:orange; left:200px; top:200px; width:400px; height:100px"></div>
+  <!-- The #anchor -->
+  <div style="position:absolute; background-color:cyan; left:300px; top:225px; width:200px; height:50px"></div>
+  <!-- top / left -->
+  <div style="position:absolute; background-color:blue; left:200px; top:200px; width:100px; height:25px"></div>
+  <!-- top / right -->
+  <div style="position:absolute; background-color:blue; left:500px; top:200px; width:100px; height:25px"></div>
+  <!-- bottom / left -->
+  <div style="position:absolute; background-color:blue; left:200px; top:275px; width:100px; height:25px"></div>
+  <!-- bottom / right -->
+  <div style="position:absolute; background-color:blue; left:500px; top:275px; width:100px; height:25px"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container.html b/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container.html
new file mode 100644
index 00000000000..91c9b097351
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/inset-area-inline-container.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<title>CSS Anchor Positioning: inset-area positioning with inline container</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position/#inset-area">
+<link rel="match" href="inset-area-inline-container-ref.html">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+<style>
+  #in-flow {
+    font-family: Ahem;
+    font-size: 100px;
+    color: orange;
+  }
+  #inline-container {
+    position: relative;
+  }
+  #anchor {
+    position: absolute;
+    top: 25px;
+    left: 100px;
+    width: 200px;
+    height: 50px;
+    anchor-name: --anchor;
+    background-color: cyan;
+  }
+  .anchored {
+    position: absolute;
+    anchor-default: --anchor;
+    background-color: blue;
+  }
+  #top-left { inset-area: top / left; }
+  #top-right { inset-area: top / right; }
+  #bottom-left { inset-area: bottom / left; }
+  #bottom-right { inset-area: bottom / right; }
+</style>
+<div id="in-flow">
+  <br>
+  <br>
+  &nbsp;&nbsp;<span id="inline-container">XXXX<span id="anchor"></span><div id="top-left" class="anchored"></div><div id="top-right" class="anchored"></div><div id="bottom-left" class="anchored"></div><div id="bottom-right" class="anchored"></div></span>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/inset-area-wm-dir.html b/tests/wpt/tests/css/css-anchor-position/inset-area-wm-dir.html
index 3acec2b10d6..5268cba7e5e 100644
--- a/tests/wpt/tests/css/css-anchor-position/inset-area-wm-dir.html
+++ b/tests/wpt/tests/css/css-anchor-position/inset-area-wm-dir.html
@@ -29,6 +29,8 @@
   }
   #anchored {
     position: absolute;
+    align-self: stretch;
+    justify-self: stretch;
     anchor-default: --anchor;
   }
   #anchor {
diff --git a/tests/wpt/tests/css/css-animations/animate-with-color-mix.html b/tests/wpt/tests/css/css-animations/animate-with-color-mix.html
new file mode 100644
index 00000000000..0b6d9bb4ab3
--- /dev/null
+++ b/tests/wpt/tests/css/css-animations/animate-with-color-mix.html
@@ -0,0 +1,162 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <link rel="help" href="https://www.w3.org/TR/css-color-4/#interpolation">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>CSS animaitons with color-mix</title>
+</head>
+<style>
+  @keyframes missing-from-legacy-to {
+    to { background-color: rgb(0, 255, 0); }
+  }
+
+  @keyframes missing-to-legacy-from {
+    from { background-color: rgb(0, 255, 0); }
+  }
+
+  @keyframes missing-from-srgb-to {
+    to { background-color: color(srgb 0 1 0); }
+  }
+
+  @keyframes missing-to-srgb-from {
+    from { background-color: color(srgb 0 1 0); }
+  }
+
+  @keyframes missing-from-rgba-to {
+    to { background-color: rgba(255, 255, 255, 0.75); }
+  }
+
+  @keyframes missing-to-rgba-from {
+    from { background-color: rgba(255, 255, 255, 0.75); }
+  }
+
+  #target {
+    color: black;
+    background-color: color-mix(in srgb, white 50%, currentColor);
+    animation-duration: 1s;
+    animation-timing-function: linear;
+    animation-play-state: paused;
+    animation-fill-mode: forwards;
+    height: 100px;
+    width: 100px;
+  }
+  .missing-from-legacy-to {
+    animation-name: missing-from-legacy-to;
+  }
+
+  .missing-to-legacy-from {
+    animation-name: missing-to-legacy-from;
+  }
+
+  .missing-from-srgb-to {
+    animation-name: missing-from-srgb-to;
+  }
+
+  .missing-to-srgb-from {
+    animation-name: missing-to-srgb-from;
+  }
+
+  .missing-from-rgba-to {
+    background-color: color-mix(in srgb, transparent 50%, currentColor);
+    animation-name: missing-from-rgba-to;
+  }
+
+  .missing-to-rgba-from {
+    background-color: color-mix(in srgb, transparent 50%, currentColor);
+    animation-name: missing-to-rgba-from;
+  }
+
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/css/support/color-testcommon.js"></script>
+
+<body>
+  <div id="target"></div>
+  <div id="test"></div>
+</body>
+<script>
+  'use strict';
+
+  async function runAnimationTest(t, name, expected_colors) {
+    const target = document.getElementById('target');
+    target.classList.add(name);
+    t.add_cleanup(() => {
+      target.classList.remove(name);
+    });
+    const anim = document.getAnimations()[0];
+    await anim.ready;
+    expected_colors.forEach(data => {
+      anim.currentTime = 1000 * data.at;
+      const actual = getComputedStyle(target).backgroundColor;
+      const expected = data.value;
+      assert_oklab_color(
+          actual, expected,
+          `Background color at ${100*data.at}% animation progress`);
+    });
+  }
+
+  const gray_to_green = [
+    { at: 0, value: 'oklab(0.5981 0.0000 0.0000)' },
+    { at: 0.25, value: 'oklab(0.6652 -0.0584 0.0449)' },
+    { at: 0.5, value: 'oklab(0.7323 -0.1169 0.0898)' },
+    { at: 0.75, value: 'oklab(0.7994 -0.1754 0.1346)' },
+    { at: 1, value: 'oklab(0.8664 -0.2338 0.1795)' }
+  ];
+
+  const green_to_gray = [
+    { at: 0, value: 'oklab(0.8664 -0.2338 0.1795)' },
+    { at: 0.25, value: 'oklab(0.7994 -0.1754 0.1346)' },
+    { at: 0.5, value: 'oklab(0.7323 -0.1169 0.0898)' },
+    { at: 0.75, value: 'oklab(0.6652 -0.0584 0.0449)' },
+    { at: 1, value: 'oklab(0.5981 0.0000 0.0000)' }
+  ];
+
+  const translucent_black_to_white = [
+    { at: 0,    value: 'oklab(0.5981 0 0)' },
+    { at: 0.25, value: 'oklab(0.6784 0 0 / 0.9373)' },
+    { at: 0.5,  value: 'oklab(0.7702 0 0 / 0.8745)' },
+    { at: 0.75, value: 'oklab(0.8762 0 0 / 0.8118)' },
+    { at: 1,    value: 'oklab(1 0 0 / 0.75)' }
+  ];
+
+  const translucent_white_to_black = [
+    { at: 0,    value: 'oklab(1 0 0 / 0.75)' },
+    { at: 0.25, value: 'oklab(0.8762 0 0 / 0.8118)' },
+    { at: 0.5,  value: 'oklab(0.7702 0 0 / 0.8745)' },
+    { at: 0.75, value: 'oklab(0.6784 0 0 / 0.9373)' },
+    { at: 1,    value: 'oklab(0.5981 0 0)' }
+  ];
+
+  window.onload = async () => {
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-from-legacy-to', gray_to_green);
+    }, 'Animate from neutral keyframe with color-mix to legacy rgb');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-to-legacy-from', green_to_gray);
+    }, 'Animate from legacy rgb to neutral keyframe with color-mix');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-from-srgb-to', gray_to_green);
+    }, 'Animate from neutral keyframe with color-mix to srgb');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-to-srgb-from', green_to_gray);
+    }, 'Animate from srgb to neutral keyframe with color-mix');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-from-rgba-to',
+                              translucent_black_to_white);
+    }, 'Animate from color-mix with transparency to legacy rgba');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'missing-to-rgba-from',
+                              translucent_white_to_black);
+    }, 'Animate from legacy rgba to color-mix with transparency');
+  };
+
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
index fd4de953705..aa2e48723eb 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
@@ -77,13 +77,13 @@
 
   // Testing permutation.
   fuzzy_test_computed_color(`rgb(from rebeccapurple g b r)`, `color(srgb 0.2 0.6 0.4)`);
-  fuzzy_test_computed_color(`rgb(from rebeccapurple b alpha r / g)`, `color(srgb 0.6 1 0.4 / 0.2)`);
-  fuzzy_test_computed_color(`rgb(from rebeccapurple r r r / r)`, `color(srgb 0.4 0.4 0.4 / 0.4)`);
-  fuzzy_test_computed_color(`rgb(from rebeccapurple alpha alpha alpha / alpha)`, `color(srgb 1 1 1)`);
+  fuzzy_test_computed_color(`rgb(from rebeccapurple b alpha r / g)`, `color(srgb 0.6 ${1/255} 0.4)`);
+  fuzzy_test_computed_color(`rgb(from rebeccapurple r r r / r)`, `color(srgb 0.4 0.4 0.4)`);
+  fuzzy_test_computed_color(`rgb(from rebeccapurple alpha alpha alpha / alpha)`, `color(srgb ${1/255} ${1/255} ${1/255})`);
   fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) g b r)`, `color(srgb 0.4 0.6 0.2 / 0.8)`);
-  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) b alpha r / g)`, `color(srgb 0.6 0.8 0.2 / 0.4)`);
-  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) r r r / r)`, `color(srgb 0.2 0.2 0.2 / 0.2)`);
-  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) alpha alpha alpha / alpha)`, `color(srgb 0.8 0.8 0.8 / 0.8)`);
+  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) b alpha r / g)`, `color(srgb 0.6 ${0.8/255} 0.2)`);
+  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) r r r / r)`, `color(srgb 0.2 0.2 0.2)`);
+  fuzzy_test_computed_color(`rgb(from rgb(20%, 40%, 60%, 80%) alpha alpha alpha / alpha)`, `color(srgb ${0.8/255} ${0.8/255} ${0.8/255} / 0.8)`);
 
   // Testing mixes of number and percentage. (These would not be allowed in the non-relative syntax).
   fuzzy_test_computed_color(`rgb(from rebeccapurple r 20% 10)`, `color(srgb 0.4 0.2 0.0392)`);
@@ -697,9 +697,9 @@
   fuzzy_test_computed_color(`color(from color(rec2020 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.280102 0.565536 0.79958)`, 0.001);
   fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) rec2020 r g b)`, `color(rec2020 0.331976 0.440887 0.696358)`, 0.001);
   fuzzy_test_computed_color(`color(from color(xyz-d50 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.660065 0.874863 0.981117)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d50 r g b)`, `color(xyz-d50 0.179349 0.196389 0.394585)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d50 x y z)`, `color(xyz-d50 0.179349 0.196389 0.394585)`, 0.001);
   fuzzy_test_computed_color(`color(from color(xyz-d65 0.25 0.5 0.75) srgb r g b)`, `color(srgb -0.611881 0.868732 0.856899)`, 0.001);
-  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d65 r g b)`, `color(xyz-d65 0.191791 0.201562 0.523057)`, 0.001);
+  fuzzy_test_computed_color(`color(from color(srgb 0.25 0.5 0.75) xyz-d65 x y z)`, `color(xyz-d65 0.191791 0.201562 0.523057)`, 0.001);
   fuzzy_test_computed_color(`lab(from color(srgb 0.25 0.5 0.75) l a b)`, `lab(51.4265 -5.21401 -40.1491)`, 0.02); // Larger values means larger epsilon.
   fuzzy_test_computed_color(`color(from lab(67.5345 -8.6911 -41.6019) srgb r g b)`, `color(srgb 0.382744 0.672806 0.938545)`, 0.001);
   fuzzy_test_computed_color(`oklab(from color(srgb 0.25 0.5 0.75) l a b)`, `oklab(0.585502 -0.0393846 -0.111503)`, 0.001);
diff --git a/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004-ref.html b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004-ref.html
new file mode 100644
index 00000000000..40923d836ca
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004-ref.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>Dynamic change to layout containment (reference)</title>
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: layout;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are NOT floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container" class="containment">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004.html b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004.html
new file mode 100644
index 00000000000..d3c9eb68606
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-004.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Dynamic change to layout containment</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain/#contain-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874826">
+<meta name="assert" content="Verify floats are properly displayed after dynamic change to layout containment.">
+<link rel="match" href="contain-layout-dynamic-004-ref.html">
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: layout;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are NOT floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+  <script>
+    window.addEventListener("load", async () => {
+        container.classList.add('containment');
+        await waitForAtLeastOneFrame();
+        takeScreenshot();
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005-ref.html b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005-ref.html
new file mode 100644
index 00000000000..3c2e6cf2e41
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005-ref.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>Dynamic change to layout containment (reference)</title>
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: layout;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005.html b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005.html
new file mode 100644
index 00000000000..a430ae5181b
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-layout-dynamic-005.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Dynamic change to layout containment</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain/#contain-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874826">
+<meta name="assert" content="Verify floats are properly displayed after dynamic change to layout containment.">
+<link rel="match" href="contain-layout-dynamic-005-ref.html">
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: layout;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container" class="containment">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+  <script>
+    window.addEventListener("load", async () => {
+        container.classList.remove('containment');
+        await waitForAtLeastOneFrame();
+        takeScreenshot();
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004-ref.html b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004-ref.html
new file mode 100644
index 00000000000..02f3d94ee93
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004-ref.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>Dynamic change to paint containment (reference)</title>
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: paint;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are NOT floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container" class="containment">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004.html b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004.html
new file mode 100644
index 00000000000..8e286db8b10
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-004.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Dynamic change to paint containment</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain/#contain-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874826">
+<meta name="assert" content="Verify floats are properly displayed after dynamic change to paint containment.">
+<link rel="match" href="contain-paint-dynamic-004-ref.html">
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: paint;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are NOT floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+  <script>
+    window.addEventListener("load", async () => {
+        container.classList.add('containment');
+        await waitForAtLeastOneFrame();
+        takeScreenshot();
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005-ref.html b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005-ref.html
new file mode 100644
index 00000000000..1d1ce904fc6
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005-ref.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>Dynamic change to paint containment (reference)</title>
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: paint;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005.html b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005.html
new file mode 100644
index 00000000000..bedac635cec
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/contain-paint-dynamic-005.html
@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Dynamic change to paint containment</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain/#contain-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874826">
+<meta name="assert" content="Verify floats are properly displayed after dynamic change to paint containment.">
+<link rel="match" href="contain-paint-dynamic-005-ref.html">
+
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+  div {
+      font: 25px/1 Ahem;
+  }
+  #wrapper {
+      width: 15em;
+      background: lightgray;
+  }
+  .containment {
+      contain: paint;
+  }
+  .float {
+      box-sizing: border-box;
+      border: 1px solid black;
+  }
+  .left {
+      float: left;
+      width: 1em;
+      height: 2em;
+  }
+  .right {
+      float: right;
+      width: 1em;
+      height: 3em;
+  }
+</style>
+
+<body>
+  <p>PASS if the boxes with dark colors are floating next to the boxes with
+    light colors.</p>
+  <div id="wrapper">
+    <div>
+      <div id="container" class="containment">
+        <div><div class="float left" style="background: lightblue"></div></div>
+        <div class="float right" style="background: lightyellow"></div>
+        <div>XX XXX XXXX X</div>
+      </div>
+      <div class="float left" style="background: blue"></div>
+      <div>
+        <div>
+          <div><div class="float right" style="background: yellow"></div></div>
+          <div>XXX XXXXXX XXXX XX XX</div>
+        </div>
+        <div>XXXX XXXXX XX</div>
+      </div>
+      <div>XXX XXX XX XXXX</div>
+    </div>
+  </div>
+  <script>
+    window.addEventListener("load", async () => {
+        container.classList.remove('containment');
+        await waitForAtLeastOneFrame();
+        takeScreenshot();
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-contain/container-queries/container-selection-unknown-features.html b/tests/wpt/tests/css/css-contain/container-queries/container-selection-unknown-features.html
new file mode 100644
index 00000000000..8e0e34db9a5
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/container-queries/container-selection-unknown-features.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<title>@container: selection using name and implicit selection</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/cq-testcommon.js"></script>
+<style>
+  #container {
+    container-type: size;
+    width: 200px;
+    --foo: bar;
+  }
+  @container (width > 0px) {
+    div { color: green }
+  }
+  @container (width > 0px) or (foo: bar) {
+    #t1 { color: red }
+  }
+  @container (width > 0px) or foo(bar) {
+    #t2 { color: red }
+  }
+  @container style(--foo: bar) or (foo: bar) {
+    #t3 { color: red }
+  }
+</style>
+<div id="container">
+  <div id="t1">Green</div>
+  <div id="t2">Green</div>
+  <div id="t3">Green</div>
+  <div id="t4">Green</div>
+</div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  const green = "rgb(0, 128, 0)";
+  test(() => { assert_equals(getComputedStyle(t1).color, green); }, "width query with (foo: bar)");
+  test(() => { assert_equals(getComputedStyle(t2).color, green); }, "width query with foo(bar)");
+  test(() => { assert_equals(getComputedStyle(t3).color, green); }, "style query with (foo: bar)");
+</script>
diff --git a/tests/wpt/tests/css/css-contain/container-queries/query-evaluation-style.html b/tests/wpt/tests/css/css-contain/container-queries/query-evaluation-style.html
index 4262f8bb0c2..bf059f795a3 100644
--- a/tests/wpt/tests/css/css-contain/container-queries/query-evaluation-style.html
+++ b/tests/wpt/tests/css/css-contain/container-queries/query-evaluation-style.html
@@ -65,10 +65,10 @@
   test_query('style((--baz: qux) or (--foo: bar) or (--foo: bar))', true);
   test_query('style((--foo: bar) or (--baz: qux) or (--foo: bar))', true);
   test_query('style((--foo: bar) or (--foo: bar) or (--baz: qux))', true);
-  test_query('style((unknown) or (--foo: bar) or (--foo: bar))', true);
-  test_query('style((--foo: bar) or (unknown) or (--foo: bar))', true);
-  test_query('style((--foo: bar) or (--foo: bar) or (unknown))', true);
-  test_query('style((unknown) or (--baz: qux) or (--foo: bar))', true);
+  test_query('style((unknown) or (--foo: bar) or (--foo: bar))', false);
+  test_query('style((--foo: bar) or (unknown) or (--foo: bar))', false);
+  test_query('style((--foo: bar) or (--foo: bar) or (unknown))', false);
+  test_query('style((unknown) or (--baz: qux) or (--foo: bar))', false);
 
   // Combinations, <style-query>:
   test_query('style(not ((--foo: bar) and (--foo: bar)))', false);
diff --git a/tests/wpt/tests/css/css-contain/container-queries/query-evaluation.html b/tests/wpt/tests/css/css-contain/container-queries/query-evaluation.html
index 5b301f2d1d9..469b7b0d7a2 100644
--- a/tests/wpt/tests/css/css-contain/container-queries/query-evaluation.html
+++ b/tests/wpt/tests/css/css-contain/container-queries/query-evaluation.html
@@ -72,10 +72,10 @@
   test_query('((height) or (width) or (width))', true);
   test_query('((width) or (height) or (width))', true);
   test_query('((width) or (width) or (height))', true);
-  test_query('((unknown) or (width) or (width))', true);
-  test_query('((width) or (unknown) or (width))', true);
-  test_query('((width) or (width) or (unknown))', true);
-  test_query('((unknown) or (height) or (width))', true);
+  test_query('((unknown) or (width) or (width))', false);
+  test_query('((width) or (unknown) or (width))', false);
+  test_query('((width) or (width) or (unknown))', false);
+  test_query('((unknown) or (height) or (width))', false);
 
   // Combinations, <container-query>:
   test_query('(not ((width) and (width)))', false);
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html
index ae1c946fa31..5724aa1649c 100644
--- a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-auto-state-changed-removed.html
@@ -8,6 +8,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/rendering-utils.js"></script>
 
 <style>
 .spacer {
@@ -23,9 +24,8 @@
 
 <script>
 promise_test(t => new Promise(async (resolve, reject) => {
-  await new Promise((waited, _) => {
-    requestAnimationFrame(() => requestAnimationFrame(waited));
-  });
+  // Make sure the first "contentvisibilityautostatechange" event has fired before the test.
+  await new Promise(resolve => bottomdiv.addEventListener("contentvisibilityautostatechange", resolve, { once: true }));
 
   let observed = false;
   bottomdiv.addEventListener("contentvisibilityautostatechange", () => {
@@ -33,7 +33,7 @@ promise_test(t => new Promise(async (resolve, reject) => {
   });
 
   bottomdiv.remove()
-  requestAnimationFrame(() => requestAnimationFrame(resolve));
+  waitForAtLeastOneFrame().then(resolve);
 
 }), "ContentVisibilityAutoStateChange does not fire on disconnected element");
 
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-vs-scrollIntoView-003.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-vs-scrollIntoView-003.html
index 93b085a5318..9fc9c5ff32f 100644
--- a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-vs-scrollIntoView-003.html
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-vs-scrollIntoView-003.html
@@ -1,14 +1,15 @@
 <!doctype HTML>
 <html>
 <meta charset="utf8">
-<title>CSS Content Visibility: auto + overflow clip + scrollIntoView, ContentVisibilityAutoStateChange fires twice</title>
+<title>CSS Content Visibility: auto + overflow clip + scrollIntoView, ContentVisibilityAutoStateChange fires trece</title>
 <link rel="author" title="Cathie Chen" href="mailto:cathiechen@igalia.com">
 <link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
 <meta name="assert"
-    content="If content-visibility: auto element is not relevent to user after calling scrollIntoView of its descendant, contentvisibilityautostatechange twice">
+    content="If content-visibility: auto element is not relevent to user after calling scrollIntoView of its descendant, contentvisibilityautostatechange trece">
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/rendering-utils.js"></script>
 
 <style>
     .auto {
@@ -50,35 +51,30 @@
 </div>
 
 <script>
-function tick() {
-  return new Promise(resolve => {
-    requestAnimationFrame(() => requestAnimationFrame(resolve));
-  });
-}
-
 function waitForEvent() {
-    return new Promise(resolve => e3.addEventListener('contentvisibilityautostatechange', resolve));
+    return new Promise(resolve => e3.addEventListener('contentvisibilityautostatechange', resolve, { once: true }));
 }
 
 promise_test(async (t) => {
-    // Make sure the first event has fired.
-    await waitForEvent();
-
     var eventCounter = 0;
     function eventHandler(e) {
         eventCounter++;
         if (eventCounter == 1) {
-            assert_equals(e.skipped, false, "the first event should be generated by visible");
+            assert_equals(e.skipped, true, "the first event is the initial one");
         } else if (eventCounter == 2) {
-            assert_equals(e.skipped, true, "the second event should be generated by hidden");
+            assert_equals(e.skipped, false, "the second event should be generated by visible");
+        } else if (eventCounter == 3) {
+            assert_equals(e.skipped, true, "the third event should be generated by hidden");
         }
     }
 
     e3.addEventListener("contentvisibilityautostatechange", eventHandler);
+    // Make sure the first event has fired.
+    await waitForEvent();
     target.scrollIntoView();
     await waitForEvent();
     await waitForEvent();
-    await tick();
-    assert_equals(eventCounter, 2, "There should be two contentvisibilityautostatechange events.");
-}, "ContentVisibilityAutoStateChange fires twice when `scrollIntoView` a descendant of `content-visibility:auto` which is hidden after scrolling");
+    await waitForAtLeastOneFrame();
+    assert_equals(eventCounter, 3, "There should be three contentvisibilityautostatechange events.");
+}, "ContentVisibilityAutoStateChange fires trece when `scrollIntoView` a descendant of `content-visibility:auto` which is hidden after scrolling");
 </script>
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-popover-top-layer-006.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-popover-top-layer-006.html
index fbe8b9fbb77..36989f79d1d 100644
--- a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-popover-top-layer-006.html
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-popover-top-layer-006.html
@@ -7,6 +7,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/rendering-utils.js"></script>
 
 <style>
 #inner {
@@ -23,8 +24,10 @@
 </div>
 
 <script>
-test(() => {
+promise_test(async () => {
     popover.showPopover();
+    // It takes at least one frame to determine the proximity to the viewport.
+    await waitForAtLeastOneFrame();
 
     // Even though the element with `content-visibility: auto` has an ancestor
     // in the top layer, this element is not in the top layer list (although
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-006.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-006.html
index 36a79532a9a..79a7993e263 100644
--- a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-006.html
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-006.html
@@ -7,6 +7,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/common/rendering-utils.js"></script>
 
 <style>
 #inner {
@@ -23,9 +24,10 @@
 </dialog>
 
 <script>
-test(() => {
+promise_test(async () => {
     dialog.show();
-
+    // It takes at least one frame to determine the proximity to the viewport.
+    await waitForAtLeastOneFrame();
     assert_equals(inner.getBoundingClientRect().height, 100);
 
     dialog.close();
@@ -35,6 +37,9 @@ test(() => {
     // in the top layer, this element is not in the top layer list (although
     // it's in the top layer stacking context). This means it should not be
     // relevant to the user, because it is nevertheless not onscreen.
+    // It takes at least one frame to determine the proximity to the viewport.
+    await waitForAtLeastOneFrame();
     assert_equals(inner.getBoundingClientRect().height, 100);
+    dialog.close();
 });
 </script>
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-007.html b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-007.html
new file mode 100644
index 00000000000..028f818133b
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/content-visibility/content-visibility-with-top-layer-007.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<meta charset="utf8">
+<title>CSS Content Visibility: onscreen c-v auto content is relevant when in top layer</title>
+<link rel="author" title="Cathie Chen" href="mailto:cathiechen@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
+<meta name="assert" content="onscreen c-v auto content is relevant when in top layer">
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<style>
+#inner {
+    content-visibility: auto;
+    contain-intrinsic-size: 100px 100px;
+}
+</style>
+
+<dialog id="dialog">
+    <div id="inner">
+        <div style="height: 200px; width: 200px;">content</div>
+    </div>
+    <div id="spacer" style="height: 100000px;"></div>
+</dialog>
+
+<script>
+promise_test(async () => {
+    dialog.show();
+    // It takes at least one frame to determine the proximity to the viewport.
+    await waitForAtLeastOneFrame();
+    assert_equals(inner.getBoundingClientRect().height, 200);
+
+    dialog.close();
+    dialog.showModal();
+
+    // It takes at least one frame to determine the proximity to the viewport.
+    await waitForAtLeastOneFrame();
+    assert_equals(inner.getBoundingClientRect().height, 200);
+    dialog.close();
+});
+</script>
diff --git a/tests/wpt/tests/css/css-contain/content-visibility/display-ruby-text-crash.html b/tests/wpt/tests/css/css-contain/content-visibility/display-ruby-text-crash.html
new file mode 100644
index 00000000000..85ccd459af7
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/content-visibility/display-ruby-text-crash.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:vmpstr@chromium.org">
+<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1515531">
+
+<style>
+body,table,tbody{
+  content-visibility: hidden;
+  display: ruby-text;
+}
+</style>
+
+<marquee></marquee>
+<u style="height: 100px; width: 100px; overflow: scroll; display: block;" dir="ltr"></u>
diff --git a/tests/wpt/tests/css/css-grid/grid-tracks-fractional-fr.html b/tests/wpt/tests/css/css-grid/grid-tracks-fractional-fr.html
new file mode 100644
index 00000000000..6600cef65c5
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/grid-tracks-fractional-fr.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>Tests fractional fr-units which should multiply to whole numbers.</title>
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1515685">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="target" style="display: grid; grid-template-columns: 1.01fr 0.99fr 1fr; width: 600px;">
+  <div></div>
+  <div></div>
+  <div></div>
+</div>
+<script>
+test(() => {
+  const [a, b, c] = document.getElementById('target').children;
+  assert_equals(a.getBoundingClientRect().width, 202);
+  assert_equals(b.getBoundingClientRect().width, 198);
+  assert_equals(c.getBoundingClientRect().width, 200);
+});
+</script>
diff --git a/tests/wpt/tests/css/css-grid/subgrid/overflow-hidden-does-not-prohibit-subgrid.html b/tests/wpt/tests/css/css-grid/subgrid/overflow-hidden-does-not-prohibit-subgrid.html
new file mode 100644
index 00000000000..b0c73e0e24e
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/subgrid/overflow-hidden-does-not-prohibit-subgrid.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+<head>
+<link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#overflow-control">
+<link rel="help" href="https://drafts.csswg.org/css-grid-2/#track-sizing">
+<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="overflow on a grid item does not cause it to establish an independent formatting context, and as a result does not prohibit subgrid">
+<style>
+.grid {
+  display: inline-grid;
+  grid-template: auto auto / auto auto;
+  background-color: green;
+}
+.subgrid {
+    grid-row: span 2;
+    grid-column: 2;
+    display: grid;
+    grid-template-rows: subgrid;
+    overflow: hidden;
+}
+.item {
+    width: 50px;
+    height: 50px;
+}
+</style>
+</head>
+<body>
+<p>Test passes if there is a filled green square.</p>
+<div class="grid">
+  <div class="item" style="grid-row: 1;"></div>
+  <div class="subgrid">
+    <div class="item" style="grid-row: 2;"></div>
+  </div>
+</div>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001-ref.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001-ref.html
new file mode 100644
index 00000000000..8c9732f1ddb
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001-ref.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Reference</title>
+<head>
+  <style>
+    iframe {
+      width: 400px;
+      height: 200px;
+    }
+</style>
+</head>
+<iframe id="iframe" src="resources/iframe-container.html"></iframe>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001.html
new file mode 100644
index 00000000000..2c28f7d132a
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Highlights using container sizes update on container changes</title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
+<link rel="match" href="custom-highlight-dynamic-container-metrics-001-ref.html">
+<meta name="assert" value="lengths depending on containers take the correct values in a universal highlight with no container when the container size changes">
+<script src="/common/reftest-wait.js"></script>
+<head>
+  <style>
+    iframe {
+      width: 200px;
+      height: 100px;
+    }
+
+    iframe.resize {
+      width: 400px;
+      height: 200px;
+    }
+</style>
+</head>
+<iframe id="iframe" src="resources/iframe-container.html"></iframe>
+<script>
+  function runtest() {
+    iframe.classList.add('resize');
+    requestAnimationFrame(() => takeScreenshot());
+  }
+  iframe.onload = runtest;
+</script>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-002.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-002.html
new file mode 100644
index 00000000000..1a0cbe87a55
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-002.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Highlights using dynamic container sizes</title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
+<link rel="match" href="custom-highlight-container-metrics-002-ref.html">
+<meta name="assert" value="lengths depending on containers take the correct values when the container size chnages">
+<meta name="fuzzy" content="0-60;0-25">
+<script src="/common/reftest-wait.js"></script>
+<head>
+  <style>
+    .wrapper {
+      container: wrapper / size;
+      width: 400px;
+      height: 200px;
+    }
+    .resize {
+      width: 200px;
+      height: 100px;
+    }
+    ::highlight(highlight1) {
+      text-underline-offset: 2cqw;
+      text-decoration-line: underline;
+      text-decoration-color: green;
+      text-decoration-thickness: 4cqh;
+    }
+</style>
+</head>
+<body>
+  <div id="container" class="wrapper">
+    <div id="h1">With container size</div>
+  </div>
+  <div id="h2">Without container size</div>
+  <script>
+    let r1 = new Range();
+    r1.setStart(h1, 0);
+    r1.setEnd(h1, 1);
+    let r2 = new Range();
+    r2.setStart(h2, 0);
+    r2.setEnd(h2, 1);
+    CSS.highlights.set("highlight1", new Highlight(r1, r2));
+    requestAnimationFrame(() => {
+      container.classList.add('resize');
+      requestAnimationFrame(() => takeScreenshot());
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-003.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-003.html
new file mode 100644
index 00000000000..38246a15aff
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-003.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Highlights using dynamic container sizes</title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
+<link rel="match" href="custom-highlight-container-metrics-003-ref.html">
+<meta name="assert" value="lengths depending on containers update correctly for a highlight defined only inside a container query">
+<head>
+  <style>
+    .wrapper {
+      container: wrapper / size;
+      width: 400px;
+      height: 200px;
+    }
+    .resize {
+      width: 200px;
+      height: 100px;
+    }
+    @container (width < 300px) {
+      ::highlight(highlight1) {
+        text-underline-offset: 2cqw;
+        text-decoration-line: underline;
+        text-decoration-color: green;
+        text-decoration-thickness: 4cqh;
+      }
+    }
+  </style>
+</head>
+<body>
+  <div id="container" class="wrapper">
+    <div id="h1">With container size</div>
+  </div>
+  <div id="h2">Should be no highlight</div>
+  <script>
+    let r1 = new Range();
+    r1.setStart(h1, 0);
+    r1.setEnd(h1, 1);
+    let r2 = new Range();
+    r2.setStart(h2, 0);
+    r2.setEnd(h2, 1);
+    CSS.highlights.set("highlight1", new Highlight(r1, r2));
+    requestAnimationFrame(() => {
+      container.classList.add('resize');
+      requestAnimationFrame(() => takeScreenshot());
+    });
+  </script>
+</body>
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-004.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-004.html
new file mode 100644
index 00000000000..fbdbea32efc
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-004.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Highlights using container sizes</title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
+<link rel="match" href="custom-highlight-container-metrics-003-ref.html">
+<meta name="assert" value="a highlight on a container itself renders at the correct size when the container changes">
+<head>
+  <style>
+    .wrapper {
+      container: wrapper / size;
+      width: 400px;
+      height: 200px;
+    }
+    .resize {
+      width: 200px;
+      height: 100px;
+    }
+    @container (width < 300px) {
+      .wrapper::highlight(highlight1) {
+        text-underline-offset: 2cqw;
+        text-decoration-line: underline;
+        text-decoration-color: green;
+        text-decoration-thickness: 4cqh;
+      }
+    }
+  </style>
+</head>
+<body>
+  <div id="h1" class="wrapper">With container size</div>
+  <div id="h2">Should be no highlight</div>
+  <script>
+    let r1 = new Range();
+    r1.setStart(h1, 0);
+    r1.setEnd(h1, 1);
+    let r2 = new Range();
+    r2.setStart(h2, 0);
+    r2.setEnd(h2, 1);
+    CSS.highlights.set("highlight1", new Highlight(r1, r2));
+    requestAnimationFrame(() => {
+      h1.classList.add('resize');
+      requestAnimationFrame(() => takeScreenshot());
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-font-metrics-001.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-font-metrics-001.html
new file mode 100644
index 00000000000..4bddbc02a1d
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-font-metrics-001.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: </title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="match" href="custom-highlight-font-metrics-001-ref.html">
+<meta name="assert" value="fonts relative units take the correct values, with correct cascade">
+<meta name="fuzzy" content="0-80;0-4">
+<head>
+  <style>
+    :root {
+      font-size: 8px;
+    }
+    div {
+      margin: 50px;
+      font-size: 10px;
+    }
+    ::highlight(highlight1) {
+      text-underline-offset: 0.5em;
+      text-decoration-line: underline;
+      text-decoration-color: green;
+      text-decoration-thickness: 0.25rem;
+    }
+  </style>
+</head>
+<body>
+  <div id="h1">Font relative units with 40px font</div>
+  <div id="h2">Font relative units with 20px font</div>
+  <script>
+    let r1 = new Range();
+    r1.setStart(h1, 0);
+    r1.setEnd(h1, 1);
+    let r2 = new Range();
+    r2.setStart(h2, 0);
+    r2.setEnd(h2, 1);
+    CSS.highlights.set("highlight1", new Highlight(r1, r2));
+    requestAnimationFrame(() => {
+      requestAnimationFrame(() => {
+        h1.style.fontSize = '40px';
+        h2.style.fontSize = '20px';
+        document.documentElement.style.fontSize = '16px';
+        requestAnimationFrame(() => takeScreenshot());
+      });
+    });
+  </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-logical-metrics-001.html b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-logical-metrics-001.html
new file mode 100644
index 00000000000..ff52aed6ab1
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/custom-highlight-dynamic-logical-metrics-001.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Highlight API Test: Length relative to a changing logical direction</title>
+<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo/#highlight-styling">
+<link rel="match" href="custom-highlight-logical-metrics-002-ref.html">
+<meta name="assert" value="lengths depending on viewports and logical direction when the direction changes">
+<meta name="fuzzy" content="0-30;0-10">
+<head>
+  <style>
+    div {
+      width: 100px;
+      height: 200px;
+      line-height: 3em;
+    }
+    .vertical {
+      writing-mode: vertical-lr;
+    }
+    ::highlight(highlight1) {
+      text-underline-offset: 1svb;
+      text-decoration-line: underline;
+      text-decoration-color: green;
+      text-decoration-thickness: 1svi;
+    }
+</style>
+</head>
+<body>
+  <div id="h1">With viewport size</div>
+  <script>
+    let r1 = new Range();
+    r1.setStart(h1, 0);
+    r1.setEnd(h1, 1);
+    CSS.highlights.set("highlight1", new Highlight(r1));
+    requestAnimationFrame(() => {
+      h1.classList.add('vertical');
+      requestAnimationFrame(() => takeScreenshot());
+    });
+  </script>
+</body>
diff --git a/tests/wpt/tests/css/css-highlight-api/painting/resources/iframe-container.html b/tests/wpt/tests/css/css-highlight-api/painting/resources/iframe-container.html
new file mode 100644
index 00000000000..c89680e28c9
--- /dev/null
+++ b/tests/wpt/tests/css/css-highlight-api/painting/resources/iframe-container.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<style>
+  ::highlight(highlight1) {
+    text-underline-offset: 1cqw;
+    text-decoration-line: underline;
+    text-decoration-color: green;
+    text-decoration-thickness: 2cqh;
+  }
+</style>
+<div id="h1">With container size</div>
+<script>
+  let r1 = new Range();
+  r1.setStart(h1, 0);
+  r1.setEnd(h1, 1);
+  CSS.highlights.set("highlight1", new Highlight(r1));
+</script>
diff --git a/tests/wpt/tests/css/css-masking/mask-image/mask-image-svg-gradient-zoomed.html b/tests/wpt/tests/css/css-masking/mask-image/mask-image-svg-gradient-zoomed.html
new file mode 100644
index 00000000000..17d2869f6e4
--- /dev/null
+++ b/tests/wpt/tests/css/css-masking/mask-image/mask-image-svg-gradient-zoomed.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>linear-gradient() mask-image on &lt;rect> in zoomed SVG</title>
+<link rel="match" href="../../reference/ref-filled-green-100px-square-only.html">
+<link rel="help" href="https://drafts.fxtf.org/css-masking/#svg-masks">
+<style>
+  svg {
+    zoom: 2;
+  }
+</style>
+<p>Test passes if there is a filled green square.</p>
+<svg>
+  <rect width="50" height="100" fill="green"
+        style="mask-image: linear-gradient(black 50px, transparent 50px)"/>
+</svg>
diff --git a/tests/wpt/tests/css/css-nesting/conditional-rules.html b/tests/wpt/tests/css/css-nesting/conditional-rules.html
index ec6f781960b..0172db645b2 100644
--- a/tests/wpt/tests/css/css-nesting/conditional-rules.html
+++ b/tests/wpt/tests/css/css-nesting/conditional-rules.html
@@ -70,6 +70,6 @@
   <div class="test test-6"></div>
   <div class="test test-10"></div>
   <div class="test test-11"></div>
-  <div class="test test-12"></div>
+  <div class="test test-12"><div class="test-12"></div></div>
   <div class="test"><div class="test-13"></div></div>
 </body>
diff --git a/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004-ref.html b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004-ref.html
new file mode 100644
index 00000000000..edafd49e524
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004-ref.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<meta charset="utf-8">
+<style>
+p {
+  background-color: purple;
+  color: white;
+}
+</style>
+<p>Should not have space around me in the inline axis.</p>
diff --git a/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004.html b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004.html
new file mode 100644
index 00000000000..07b66eede73
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-dynamic-004.html
@@ -0,0 +1,26 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>CSS Overflow: scrollbar-gutter changing dynamically on the root element</title>
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#scrollbar-gutter-property">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874093">
+<link rel="match" href="scrollbar-gutter-dynamic-004-ref.html">
+<style>
+:root {
+  scrollbar-gutter: stable both-edges;
+}
+p {
+  background-color: purple;
+  color: white;
+}
+</style>
+<p>Should not have space around me in the inline axis.</p>
+<script>
+  document.documentElement.getBoundingClientRect();
+  document.addEventListener("TestRendered", function() {
+    document.documentElement.style.scrollbarGutter = "initial";
+    document.documentElement.className = "";
+  });
+</script>
diff --git a/tests/wpt/tests/css/css-page/parsing/margin-rules-001.html b/tests/wpt/tests/css/css-page/parsing/margin-rules-001.html
index b73d1bc56fc..c4270fe606a 100644
--- a/tests/wpt/tests/css/css-page/parsing/margin-rules-001.html
+++ b/tests/wpt/tests/css/css-page/parsing/margin-rules-001.html
@@ -45,7 +45,7 @@ test(t => {
   }
   // Test that margin-rules are valid inside page-rules.
   for(let t in ruleTypes){
-    test_valid_rule("@page{ " + ruleTypes[t] + "{ } }");
+    test_valid_rule("@page { " + ruleTypes[t] + " { } }");
   }
 }, "margin-rules-001");
 </script>
diff --git a/tests/wpt/tests/css/css-properties-values-api/unit-cycles.html b/tests/wpt/tests/css/css-properties-values-api/unit-cycles.html
index 9454c95ac30..de26e712c77 100644
--- a/tests/wpt/tests/css/css-properties-values-api/unit-cycles.html
+++ b/tests/wpt/tests/css/css-properties-values-api/unit-cycles.html
@@ -4,15 +4,23 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>
-    function register_length(name, inherits=false) {
+    function register_property(name, syntax, inherits) {
         CSS.registerProperty({
             name: name,
-            syntax: '<length>',
+            syntax: syntax,
             initialValue: '0px',
             inherits: inherits
         });
     }
 
+    function register_length(name, inherits=false) {
+        register_property(name, '<length>', inherits);
+    }
+
+    function register_universal(name) {
+        register_property(name, '*', false);
+    }
+
     register_length('--font-size-em');
     register_length('--font-size-rem');
     register_length('--font-size-ex');
@@ -29,6 +37,12 @@
     register_length('--line-height-lh');
     register_length('--line-height-lh-via-var');
     register_length('--line-height-lh-inherited', true);
+    register_universal('--font-size-em-universal');
+    register_universal('--font-size-rem-universal');
+    register_universal('--font-size-ex-universal');
+    register_universal('--font-size-ch-universal');
+    register_universal('--font-size-px-universal');
+    register_universal('--font-size-lh-universal');
 </script>
 <style>
     :root {
@@ -52,6 +66,12 @@
         --font-size-ex-via-var: var(--unregistered-ex);
         --font-size-ch-via-var: var(--unregistered-ch);
         --line-height-lh-via-var: var(--unregistered-lh);
+        --font-size-em-universal: 2em;
+        --font-size-rem-universal: 2rem;
+        --font-size-ex-universal: 2ex;
+        --font-size-ch-universal: 2ch;
+        --font-size-px-universal: 42px;
+        --font-size-lh-universal: 2lh;
     }
 
     #parent {
@@ -74,14 +94,27 @@
 
 <script>
 
+    function unset_dimension(element = ref) {
+        element.style.fontSize = '';
+        element.style.marginBottom = '';
+    }
+
+    function compute_margin_bottom(dimension, element) {
+        try {
+            element.style.marginBottom = dimension;
+            return getComputedStyle(element).marginBottom;
+        } finally {
+            element.style.marginBottom = '';
+        }
+    }
+
     // Compute a dimension (e.g. 1em) given a certain fontSize.
     function compute_dimension(dimension, fontSize, element = ref) {
         try {
-            element.attributeStyleMap.set('font-size', fontSize);
-            element.attributeStyleMap.set('margin-bottom', dimension);
-            return getComputedStyle(element).marginBottom;
+            element.style.fontSize = fontSize;
+            return compute_margin_bottom(dimension, element);
         } finally {
-            element.attributeStyleMap.clear();
+            element.style.fontSize = '';
         }
     }
 
@@ -94,10 +127,45 @@
     const unsetLineHeight = "normal";
 
     add_result_callback(function(){
-        target.attributeStyleMap.clear();
-        document.documentElement.attributeStyleMap.clear();
+        unset_dimension(target);
+        unset_dimension(document.documentElement);
     });
 
+    test(function() {
+        // Unregistered variables behave as if they're copy & paste, so
+        // follow the regular font-relative size resolution.
+        const unregistered_variables = {
+            'unregistered-em': target.parentElement,
+            'unregistered-ex': target.parentElement,
+            'unregistered-ch': target.parentElement,
+            'unregistered-lh': target.parentElement,
+            'unregistered-rem': document.documentElement,
+        };
+
+        for (let variable in unregistered_variables) {
+            const e = unregistered_variables[variable];
+            const v = `var(--${variable})`;
+            target.style = `font-size: ${v};`;
+            assert_property_equals('font-size', compute_margin_bottom(v, e));
+        }
+    }, 'Font-dependent unregistered variables can be used in font-size');
+
+    test(function() {
+        const universal_variables = {
+            'font-size-em-universal': (v) => compute_dimension(v, 'unset', target),
+            'font-size-ex-universal': (v) => compute_dimension(v, 'unset', target),
+            'font-size-ch-universal': (v) => compute_dimension(v, 'unset', target),
+            'font-size-lh-universal': (v) => compute_margin_bottom('2lh', target.parentElement),
+            'font-size-rem-universal': (v) => compute_dimension(v, 'unset', target),
+        };
+        for (let variable in universal_variables) {
+            const v = `var(--${variable})`;
+            const expected = universal_variables[variable](v);
+            target.style = `font-size: ${v};`;
+            assert_property_equals('font-size', expected);
+        }
+    }, 'Registered universal variables referencing font-dependent units can be used in font-size');
+
     test(function() {
         target.style = 'font-size: var(--font-size-px);';
         assert_property_equals('font-size', '42px');
diff --git a/tests/wpt/tests/css/css-pseudo/active-selection-031.html b/tests/wpt/tests/css/css-pseudo/active-selection-031.html
index c7d79c8ac9f..7b08269300e 100644
--- a/tests/wpt/tests/css/css-pseudo/active-selection-031.html
+++ b/tests/wpt/tests/css/css-pseudo/active-selection-031.html
@@ -10,12 +10,18 @@
 
 
   <link rel="stylesheet" href="support/highlights.css">
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
   <style>
+  .highlight_reftest {
+    overflow: hidden;
+    width: 300px;
+    height: 325px;
+  }
   div > div
     {
       color: red;
       float: left;
-      font-size: 32px;
+      font: 25px/1 Ahem;
       margin-left: 16px;
     }
 
diff --git a/tests/wpt/tests/css/css-pseudo/reference/active-selection-031-ref.html b/tests/wpt/tests/css/css-pseudo/reference/active-selection-031-ref.html
index 3bb7c329d46..a9581d40c72 100644
--- a/tests/wpt/tests/css/css-pseudo/reference/active-selection-031-ref.html
+++ b/tests/wpt/tests/css/css-pseudo/reference/active-selection-031-ref.html
@@ -7,12 +7,18 @@
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
 
   <link rel="stylesheet" href="../support/highlights.css">
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
   <style>
+  .highlight_reftest {
+    overflow: hidden;
+    width: 300px;
+    height: 325px;
+  }
   div > div
     {
       color: green;
       float: left;
-      font-size: 32px;
+      font: 25px/1 Ahem;
       margin-left: 16px;
     }
 
diff --git a/tests/wpt/tests/css/css-scroll-anchoring/adjustment-followed-by-scrollBy.html b/tests/wpt/tests/css/css-scroll-anchoring/adjustment-followed-by-scrollBy.html
new file mode 100644
index 00000000000..7428147b835
--- /dev/null
+++ b/tests/wpt/tests/css/css-scroll-anchoring/adjustment-followed-by-scrollBy.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<html>
+<meta name="viewport" content="width=device-width">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874551">
+<style>
+div {
+  height: round(20vh, 1px);
+}
+</style>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div id="center" style="height: 100px; background-color: blue;"></div>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<div></div>
+<script>
+promise_test(async t => {
+  assert_equals(window.scrollY, 0);
+
+  // Center an element.
+  center.scrollIntoView({ block: "center" }, { behavior: "instant" });
+  await new Promise(resolve => window.addEventListener("scroll", resolve));
+
+  const originalPosition = center.getBoundingClientRect().top;
+
+  // Given that now the element is centered, one of div elements above the
+  // centered element is used as the scroll anchor node. Hide two div elements,
+  // the first div and the div element just above the centered one to move the
+  // anchor node, thus it will trigger scroll anchoring adjustment.
+  center.previousElementSibling.style.display = "none";
+  document.querySelectorAll("div")[0].style.display = "none";
+
+  // And adjust the scroll position where the centered element is still
+  // positioned at the center of the scroll container.
+  window.scrollBy(0, center.getBoundingClientRect().top - originalPosition);
+  await new Promise(resolve => window.addEventListener("scroll", resolve));
+
+  const centeredPosition = center.getBoundingClientRect().top;
+
+  // Now try to scrollIntoView({ block: "center" }) and make sure the position
+  // is unchanged.
+  center.scrollIntoView({ block: "center" }, { behavior: "instant" });
+
+  // Wait two frames to be able to scroll if it's possible.
+  await new Promise(resolve => requestAnimationFrame(resolve));
+  await new Promise(resolve => requestAnimationFrame(resolve));
+
+  assert_equals(centeredPosition, center.getBoundingClientRect().top);
+}, "Scroll anchoring followed by scrollBy call");
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001-ref.html b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001-ref.html
new file mode 100644
index 00000000000..57013882323
--- /dev/null
+++ b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script src="support/variant-class.js"></script>
+<style>
+@font-face {
+  font-family: halt-font;
+  src: url('/fonts/noto/cjk/NotoSansCJKjp-Regular-subset-halt.otf');
+}
+#container {
+  font-family: halt-font;
+  font-size: 20px;
+}
+.vrl {
+  writing-mode: vertical-rl;
+}
+</style>
+<div id="container">
+  <div>国国国）<br>国国国）</div>
+</div>
diff --git a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html
new file mode 100644
index 00000000000..c5293f09981
--- /dev/null
+++ b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-end-001.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-text-4/#text-spacing-trim-property">
+<link rel="match" href="text-spacing-trim-end-001-ref.html">
+<script src="support/variant-class.js"></script>
+<meta name="variant" content="?class=halt,htb">
+<meta name="variant" content="?class=chws,htb">
+<meta name="variant" content="?class=halt,vrl">
+<meta name="variant" content="?class=chws,vrl">
+<style>
+@font-face {
+  font-family: halt-font;
+  src: url('/fonts/noto/cjk/NotoSansCJKjp-Regular-subset-halt.otf');
+}
+@font-face {
+  font-family: chws-font;
+  src: url('/fonts/noto/cjk/NotoSansCJKjp-Regular-subset-chws.otf');
+}
+#container {
+  font-family: halt-font;
+  font-size: 20px;
+  inline-size: 3.6em;
+  text-spacing-trim: trim-start;
+}
+.chws #container {
+  font-family: chws-font;
+}
+.vrl {
+  writing-mode: vertical-rl;
+}
+</style>
+<div id="container">
+  <div>国国国）国国国）</div>
+</div>
diff --git a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001-ref.html b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001-ref.html
index aef81fbbc0d..60a255160f2 100644
--- a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001-ref.html
+++ b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001-ref.html
@@ -10,6 +10,7 @@
   font-family: halt-font;
   font-size: 20px;
   inline-size: 4em;
+  text-spacing-trim: space-all;
 }
 .vrl {
   writing-mode: vertical-rl;
@@ -26,6 +27,7 @@ halt {
 </style>
 <div id="container">
   <div><ps>（</ps>国国国<ls>（</ls>国国国<ls>（</ls>国</div>
+  <div>国国国）<ls>（</ls>国国）<ls>（</ls>国</div>
   <div>国国国国<ls>（</ls></div>
   <div lang="zh-hans">国国国国<ls>“</ls></div>
 
diff --git a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001.html b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001.html
index 3d481df1da2..f007245277b 100644
--- a/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001.html
+++ b/tests/wpt/tests/css/css-text/text-spacing-trim/text-spacing-trim-start-001.html
@@ -44,6 +44,7 @@
 </style>
 <div id="container">
   <div>（国国国（国国国（国</div>
+  <div>国国国）（国国）（国</div>
   <div>国国国国（</div>
   <div lang="zh-hans">国国国国“</div>
 
diff --git a/tests/wpt/tests/css/css-text/text-transform/math/italic-mapping.js b/tests/wpt/tests/css/css-text/text-transform/math/italic-mapping.js
new file mode 100644
index 00000000000..ba17d3f6b60
--- /dev/null
+++ b/tests/wpt/tests/css/css-text/text-transform/math/italic-mapping.js
@@ -0,0 +1,115 @@
+// Generated by mathml/tools/mathvariant.py; DO NOT EDIT.
+let italic_mapping = {
+  0x41: 0x1D434,
+  0x42: 0x1D435,
+  0x43: 0x1D436,
+  0x44: 0x1D437,
+  0x45: 0x1D438,
+  0x46: 0x1D439,
+  0x47: 0x1D43A,
+  0x48: 0x1D43B,
+  0x49: 0x1D43C,
+  0x4A: 0x1D43D,
+  0x4B: 0x1D43E,
+  0x4C: 0x1D43F,
+  0x4D: 0x1D440,
+  0x4E: 0x1D441,
+  0x4F: 0x1D442,
+  0x50: 0x1D443,
+  0x51: 0x1D444,
+  0x52: 0x1D445,
+  0x53: 0x1D446,
+  0x54: 0x1D447,
+  0x55: 0x1D448,
+  0x56: 0x1D449,
+  0x57: 0x1D44A,
+  0x58: 0x1D44B,
+  0x59: 0x1D44C,
+  0x5A: 0x1D44D,
+  0x61: 0x1D44E,
+  0x62: 0x1D44F,
+  0x63: 0x1D450,
+  0x64: 0x1D451,
+  0x65: 0x1D452,
+  0x66: 0x1D453,
+  0x67: 0x1D454,
+  0x68: 0x210E,
+  0x69: 0x1D456,
+  0x6A: 0x1D457,
+  0x6B: 0x1D458,
+  0x6C: 0x1D459,
+  0x6D: 0x1D45A,
+  0x6E: 0x1D45B,
+  0x6F: 0x1D45C,
+  0x70: 0x1D45D,
+  0x71: 0x1D45E,
+  0x72: 0x1D45F,
+  0x73: 0x1D460,
+  0x74: 0x1D461,
+  0x75: 0x1D462,
+  0x76: 0x1D463,
+  0x77: 0x1D464,
+  0x78: 0x1D465,
+  0x79: 0x1D466,
+  0x7A: 0x1D467,
+  0x131: 0x1D6A4,
+  0x237: 0x1D6A5,
+  0x391: 0x1D6E2,
+  0x392: 0x1D6E3,
+  0x393: 0x1D6E4,
+  0x394: 0x1D6E5,
+  0x395: 0x1D6E6,
+  0x396: 0x1D6E7,
+  0x397: 0x1D6E8,
+  0x398: 0x1D6E9,
+  0x399: 0x1D6EA,
+  0x39A: 0x1D6EB,
+  0x39B: 0x1D6EC,
+  0x39C: 0x1D6ED,
+  0x39D: 0x1D6EE,
+  0x39E: 0x1D6EF,
+  0x39F: 0x1D6F0,
+  0x3A0: 0x1D6F1,
+  0x3A1: 0x1D6F2,
+  0x3F4: 0x1D6F3,
+  0x3A3: 0x1D6F4,
+  0x3A4: 0x1D6F5,
+  0x3A5: 0x1D6F6,
+  0x3A6: 0x1D6F7,
+  0x3A7: 0x1D6F8,
+  0x3A8: 0x1D6F9,
+  0x3A9: 0x1D6FA,
+  0x2207: 0x1D6FB,
+  0x3B1: 0x1D6FC,
+  0x3B2: 0x1D6FD,
+  0x3B3: 0x1D6FE,
+  0x3B4: 0x1D6FF,
+  0x3B5: 0x1D700,
+  0x3B6: 0x1D701,
+  0x3B7: 0x1D702,
+  0x3B8: 0x1D703,
+  0x3B9: 0x1D704,
+  0x3BA: 0x1D705,
+  0x3BB: 0x1D706,
+  0x3BC: 0x1D707,
+  0x3BD: 0x1D708,
+  0x3BE: 0x1D709,
+  0x3BF: 0x1D70A,
+  0x3C0: 0x1D70B,
+  0x3C1: 0x1D70C,
+  0x3C2: 0x1D70D,
+  0x3C3: 0x1D70E,
+  0x3C4: 0x1D70F,
+  0x3C5: 0x1D710,
+  0x3C6: 0x1D711,
+  0x3C7: 0x1D712,
+  0x3C8: 0x1D713,
+  0x3C9: 0x1D714,
+  0x2202: 0x1D715,
+  0x3F5: 0x1D716,
+  0x3D1: 0x1D717,
+  0x3F0: 0x1D718,
+  0x3D5: 0x1D719,
+  0x3F1: 0x1D71A,
+  0x3D6: 0x1D71B,
+}
diff --git a/tests/wpt/tests/css/css-text/text-transform/math/text-transform-math-auto-003.html b/tests/wpt/tests/css/css-text/text-transform/math/text-transform-math-auto-003.html
new file mode 100644
index 00000000000..eff01b08902
--- /dev/null
+++ b/tests/wpt/tests/css/css-text/text-transform/math/text-transform-math-auto-003.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>text-transform math-auto</title>
+    <link rel="help" href="https://w3c.github.io/mathml-core/#new-text-transform-values">
+    <link rel="help" href="https://w3c.github.io/mathml-core/#italic-mappings">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="italic-mapping.js"></script>
+    <meta name="assert" content="Verify Selection.toString() on a character with 'text-transform: math-auto' returns the transformed unicode character.">
+    <style>
+      #container {
+        text-transform: math-auto;
+      }
+    </style>
+  </head>
+  <body>
+    <span id="container"></span>
+    <script>
+      add_completion_callback(() => {
+        container.remove();
+      });
+      for (let code_point in italic_mapping) {
+        test(() => {
+          container.textContent = String.fromCodePoint(code_point);
+          window
+            .getSelection()
+            .setBaseAndExtent(container.firstChild, 0, container.firstChild, 1);
+          assert_equals(
+            window.getSelection().toString(),
+            String.fromCodePoint(italic_mapping[code_point])
+          );
+        }, `Selection.toString() for math-auto '${String.fromCodePoint(code_point)}' returns the transformed character.`);
+      }
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/css/css-text/text-transform/text-transform-upperlower-107.html b/tests/wpt/tests/css/css-text/text-transform/text-transform-upperlower-107.html
new file mode 100644
index 00000000000..791edd14c0e
--- /dev/null
+++ b/tests/wpt/tests/css/css-text/text-transform/text-transform-upperlower-107.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Text Test: text-transform uppercase German sharp S and selection</title>
+<link rel="author" title="Frédéric Wang" href="mailto:fwang@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-text/#propdef-text-transform">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<meta name="assert" content="text-transform: uppercase will uppercase the German sharp S as SS, the whole 2 characters is selectable and should be returned when retriving the selected string.">
+<style>
+  #target {
+    text-transform: uppercase;
+  }
+</style>
+
+<span id="target" lang="de">&#x00DF;</span>
+
+<script>
+  test(() => {
+    window.getSelection().setBaseAndExtent(target, 0, target, 1);
+    assert_equals(window.getSelection().toString(), "SS");
+  }, "Selection.toString() for 'ß' with text-transform: uppercase");
+</script>
diff --git a/tests/wpt/tests/css/css-transitions/all-with-discrete.tentative.html b/tests/wpt/tests/css/css-transitions/all-with-discrete.tentative.html
index c3642eeed89..37946717b4c 100644
--- a/tests/wpt/tests/css/css-transitions/all-with-discrete.tentative.html
+++ b/tests/wpt/tests/css/css-transitions/all-with-discrete.tentative.html
@@ -5,17 +5,20 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="/css/css-animations/support/testcommon.js"></script>
 
-<div id=target>hello</div>
+<div class=testcase id=discrete>Allow discrete</div>
+<div class=testcase id=normal>No discrete</div>
 
 <style>
-#target {
+.testcase {
   float: left;
   width: 100px;
   height: 100px;
   transition: all 1s;
+}
+#discrete {
   transition-behavior: allow-discrete;
 }
-#target.animated {
+.animated {
   float: right;
 }
 </style>
@@ -23,8 +26,14 @@
 <script>
 promise_test(async () => {
   await waitForAnimationFrames(2);
-  target.classList.add('animated');
-  const anims = document.getAnimations();
+  // Regression test for https://crbug.com/1518561
+  normal.classList.add('animated');
+  const normalAnims = normal.getAnimations();
+  assert_equals(normalAnims.length, 0,
+                "Started a discrete property transition on a normal element");
+
+  discrete.classList.add('animated');
+  const anims = discrete.getAnimations();
   assert_equals(anims.length, 1,
                 "Did not start a discrete-property transition");
   assert_equals(anims[0].transitionProperty, 'float');
diff --git a/tests/wpt/tests/css/css-transitions/animations/animate-with-color-mix.html b/tests/wpt/tests/css/css-transitions/animations/animate-with-color-mix.html
new file mode 100644
index 00000000000..3e630a7a2b1
--- /dev/null
+++ b/tests/wpt/tests/css/css-transitions/animations/animate-with-color-mix.html
@@ -0,0 +1,146 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <link rel="help" href="https://www.w3.org/TR/css-color-4/#interpolation">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>CSS transitions with color-mix</title>
+</head>
+<style>
+  #target-1, #target-2, #target-3, #target-4, #target-5, #target-6 {
+    color: black;
+    height: 100px;
+    width: 100px;
+    display: inline-block;
+    transition: background-color 1s linear;
+  }
+  #target-1,
+  #target-2.update-2,
+  #target-3,
+  #target-4.update-4 {
+    background-color: color-mix(in srgb, white 50%,
+                                currentcolor);
+  }
+  #target-1.update-1,
+  #target-2 {
+    background-color: rgb(0, 255, 0);
+  }
+
+  #target-3.update-3,
+  #target-4 {
+    background-color: color(srgb 0.0 1.0 0.0);
+  }
+
+  #target-5, #target-6.update-6 {
+    background-color: color-mix(in srgb, transparent 50%,
+                                currentcolor);
+  }
+
+  #target-6, #target-5.update-5 {
+    background-color: rgba(255, 255, 255, 0.75);
+  }
+
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/css/support/color-testcommon.js"></script>
+<body>
+  <div id="target-1"></div>
+  <div id="target-2"></div>
+  <div id="target-3"></div>
+  <div id="target-4"></div>
+  <div id="target-5"></div>
+  <div id="target-6"></div>
+</body>
+<script>
+  'use strict';
+
+  async function runAnimationTest(t, elementId, update,
+                                  expected_colors) {
+    const elem = document.getElementById(elementId);
+    t.add_cleanup(() => {
+      elem.classList.remove(update);
+    });
+    await waitForNextFrame();
+    await waitForNextFrame();
+    elem.classList.add(update);
+    const anim = elem.getAnimations()[0];
+    await anim.ready;
+    // Keep the animation in effect when it reaches the end.
+    anim.effect.updateTiming({ fill: 'forwards' });
+    expected_colors.forEach(data => {
+      anim.currentTime = 1000 * data.at;
+      const actual = getComputedStyle(elem).backgroundColor;
+      const expected = data.value;
+      assert_oklab_color(
+          actual, expected,
+          `Background color at ${100*data.at}% animation progress`);
+    });
+  }
+
+  const gray_to_green = [
+    { at: 0, value: 'oklab(0.5981 0.0000 0.0000)' },
+    { at: 0.25, value: 'oklab(0.6652 -0.0584 0.0449)' },
+    { at: 0.5, value: 'oklab(0.7323 -0.1169 0.0898)' },
+    { at: 0.75, value: 'oklab(0.7994 -0.1754 0.1346)' },
+    { at: 1, value: 'oklab(0.8664 -0.2338 0.1795)' }
+  ];
+
+  const green_to_gray = [
+    { at: 0, value: 'oklab(0.8664 -0.2338 0.1795)' },
+    { at: 0.25, value: 'oklab(0.7994 -0.1754 0.1346)' },
+    { at: 0.5, value: 'oklab(0.7323 -0.1169 0.0898)' },
+    { at: 0.75, value: 'oklab(0.6652 -0.0584 0.0449)' },
+    { at: 1, value: 'oklab(0.5981 0.0000 0.0000)' }
+  ];
+
+  const translucent_black_to_white = [
+    { at: 0,    value: 'oklab(0 0 0 / 0.5)' },
+    { at: 0.25, value: 'oklab(0.3330 0 0 / 0.5623)' },
+    { at: 0.5,  value: 'oklab(0.5997 0 0 / 0.6245)' },
+    { at: 0.75, value: 'oklab(0.8180 0 0 / 0.6868)' },
+    { at: 1,    value: 'oklab(1 0 0 / 0.75)' }
+  ];
+
+  const translucent_white_to_black = [
+    { at: 0,    value: 'oklab(1 0 0 / 0.75)' },
+    { at: 0.25, value: 'oklab(0.8180 0 0. / 0.6868)' },
+    { at: 0.5,  value: 'oklab(0.5997 0 0 / 0.6245)' },
+    { at: 0.75, value: 'oklab(0.3330 0 0 / 0.5623)' },
+    { at: 1,    value: 'oklab(0 0 0 / 0.5)' }
+  ];
+
+  window.onload = async () => {
+    promise_test(t => {
+      return runAnimationTest(t, 'target-1', 'update-1',
+                              gray_to_green);
+    }, 'Transition from color-mix to legacy rgb');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'target-2', 'update-2',
+                              green_to_gray);
+    }, 'Transition from legacy rgb to color-mix');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'target-3', 'update-3',
+                              gray_to_green);
+    }, 'Transition from color-mix to srgb');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'target-4', 'update-4',
+                              green_to_gray);
+    }, 'Transition from srgb to color-mix');
+
+    promise_test(t => {
+      return runAnimationTest(t, 'target-5', 'update-5',
+                              translucent_black_to_white);
+    }, 'Transition from color-mix with transparency to legacy rgba');
+
+        promise_test(t => {
+      return runAnimationTest(t, 'target-6', 'update-6',
+                              translucent_white_to_black);
+    }, 'Transition from legacy rgba to color-mix with transparency');
+  };
+</script>
+</html>
diff --git a/tests/wpt/tests/css/css-typed-om/stylevalue-serialization/cssUnparsedValue.html b/tests/wpt/tests/css/css-typed-om/stylevalue-serialization/cssUnparsedValue.html
index 6fc2e0284c1..c87553dd917 100644
--- a/tests/wpt/tests/css/css-typed-om/stylevalue-serialization/cssUnparsedValue.html
+++ b/tests/wpt/tests/css/css-typed-om/stylevalue-serialization/cssUnparsedValue.html
@@ -2,17 +2,18 @@
 <meta charset="utf-8">
 <title>IDL-constructed CSSUnparsedValue serialization tests</title>
 <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#unparsedvalue-serialization">
-<meta name="assert" content="Test CSSUnparsedValue are serialized by concatenating its contents" />
+<meta name="assert" content="Test CSSUnparsedValue are serialized similar to getComputedStyle()" />
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <body>
-<div id="tag">
+<div id="tag"></div>
+<div id="elem" style="color-scheme: bar/*comment*/var(--foo)"></div>
 <script>
 'use strict';
 
 test(() => {
-  assert_equals(new CSSUnparsedValue(['lem', 'on', 'ade']).toString(), 'lemonade');
-}, 'CSSUnparsedValue containing strings serializes to its concatenated contents');
+  assert_equals(new CSSUnparsedValue(['lem', 'on', 'ade']).toString(), 'lem/**/on/**/ade');
+}, 'CSSUnparsedValue containing strings serializes to its tokenized contents');
 
 test(() => {
   assert_equals(new CSSUnparsedValue([
@@ -21,7 +22,7 @@ test(() => {
       new CSSVariableReferenceValue('--C')]).toString(),
     'var(--A,var(--B))var(--C)');
 }, 'CSSUnparsedValue containing variable references serializes its ' +
-   'concatenated contents');
+   'tokenized contents');
 
 test(() => {
   assert_equals(new CSSUnparsedValue(['foo', 'bar ',
@@ -30,8 +31,14 @@ test(() => {
           new CSSVariableReferenceValue('--B'), 'lemon'])),
       new CSSVariableReferenceValue('--C',
         new CSSUnparsedValue(['ade']))]).toString(),
-    'foobar var(--A,baz var(--B)lemon)var(--C,ade)');
+    'foo/**/bar var(--A,baz var(--B)lemon)var(--C,ade)');
 }, 'CSSUnparsedValue containing mix of strings and variable references ' +
-   'serializes to its concatenated contents');
+   'serializes to its tokenized contents');
+
+test(() => {
+  assert_equals(
+      elem.attributeStyleMap.get("color-scheme").toString(),
+      'bar/**/var(--foo)');
+}, 'attributeStyleMap round-trips correctly, though the comment is gone');
 
 </script>
diff --git a/tests/wpt/tests/css/css-ui/parsing/resize-invalid.html b/tests/wpt/tests/css/css-ui/parsing/resize-invalid.html
index 7f9698f7aad..c6c19ebceac 100644
--- a/tests/wpt/tests/css/css-ui/parsing/resize-invalid.html
+++ b/tests/wpt/tests/css/css-ui/parsing/resize-invalid.html
@@ -15,6 +15,7 @@
 test_invalid_value("resize", "auto");
 test_invalid_value("resize", "horizontal vertical");
 test_invalid_value("resize", "both 0");
+test_invalid_value("resize", "-internal-textarea-auto");
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-values/progress-computed.tentative.html b/tests/wpt/tests/css/css-values/progress-computed.tentative.html
index 2ef09996d55..7f8a1ddd789 100644
--- a/tests/wpt/tests/css/css-values/progress-computed.tentative.html
+++ b/tests/wpt/tests/css/css-values/progress-computed.tentative.html
@@ -17,9 +17,9 @@ test_math_used('progress(sign(-10px) * 10px from (10px - 10px) to 10px * progres
 // General calculations
 test_math_used('calc(progress(100px from 0px to 50px) * 10px + 100px)', '120px');
 test_math_used('calc(progress(100 from 0 to sign(50px)))', '100', {type:'number'});
-test_math_used('calc(progress(abs(5%) from hypot(3%, 4%) to 10%))', '1', {type:'number', approx:0.001});
-test_math_used('progress(1000em from 10em to 110em)', '10', {type:'number'});
-test_math_used('scale(progress(1000em from 10rem to 110em))', 'scale(10)', {prop:'transform', type:'number'});
+test_math_used('calc(progress(abs(5%) from hypot(3%, 4%) to 10%))', '0', {type:'number', approx:0.001});
+test_math_used('progress(1000em from 10em to 110em)', '9.9', {type:'number', approx:0.1});
+test_math_used('scale(progress(1000em from 10rem to 110em))', 'scale(9.9)', {prop:'transform', type:'number', approx:0.1});
 test_math_used('scale(progress(0em from 0rem to 0em))', 'scale(0)', {prop:'transform', type:'number'});
 test_math_used('scale(progress(sign(1em - 1rem) * 1ex from 0rem to 0em))', 'scale(0)', {prop:'transform', type:'number'});
 
diff --git a/tests/wpt/tests/css/css-view-transitions/parsing/view-transition-name-invalid.html b/tests/wpt/tests/css/css-view-transitions/parsing/view-transition-name-invalid.html
index 0151991436c..00cd411d6ad 100644
--- a/tests/wpt/tests/css/css-view-transitions/parsing/view-transition-name-invalid.html
+++ b/tests/wpt/tests/css/css-view-transitions/parsing/view-transition-name-invalid.html
@@ -12,6 +12,7 @@
 </head>
 <body>
 <script>
+test_invalid_value("view-transition-name", "auto"); // `auto` is excluded.
 test_invalid_value("view-transition-name", "default"); // `default` isn't allowed by the `<custom-ident>` syntax.
 test_invalid_value("view-transition-name", "none none");
 test_invalid_value("view-transition-name", `"none"`);
diff --git a/tests/wpt/tests/css/cssom-view/client-props-zoom.html b/tests/wpt/tests/css/cssom-view/client-props-zoom.html
index fb4c95cada4..fc5b07abb51 100644
--- a/tests/wpt/tests/css/cssom-view/client-props-zoom.html
+++ b/tests/wpt/tests/css/cssom-view/client-props-zoom.html
@@ -2,23 +2,21 @@
 <title>Client properties for elements with css zoom</title>
 <link rel="author" title="Yotam Hacohen" href="mailto:yotha@chromium.org">
 <link rel="author" title="Google" href="http://www.google.com/">
-<link rel="help" href="https://drafts.csswg.org/css-viewport/">"
+<link rel="help" href="https://drafts.csswg.org/css-viewport/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-  <head>
-    <style>
-      div {
+<style>
+      .test_content div {
         width: 64px;
         height: 64px;
-        background-color: blue
+        background-color: cyan;
       }
-      div.x4_zoom {
+      .test_content div.x4_zoom {
         zoom: 4.0;
       }
-    </style>
-  </head>
-  <body>
-
+</style>
+<body>
+  <div class="test_content">
     <div id="no_zoom"></div>
     <div class="x4_zoom" id="element_with_zoom"></div>
 
@@ -27,11 +25,11 @@
       <div>
         <div id="indirect_child_of_element_with_zoom"></div>
       </div>
-      <div class="x4_zoom", id="both_child_and_parent_has_zoom"></div>
+      <div class="x4_zoom" id="both_child_and_parent_has_zoom"></div>
     </div>
+  </div>
 
-
-    <script>
+  <script>
       setup(() => {
         window.noZoom = document.getElementById("no_zoom");
       });
@@ -50,5 +48,5 @@
         compareObjectToDivWithNoZoom(document.getElementById("indirect_child_of_element_with_zoom"));
         compareObjectToDivWithNoZoom(document.getElementById("both_child_and_parent_has_zoom"));
       });
-    </script>
-  </body>
\ No newline at end of file
+  </script>
+</body>
diff --git a/tests/wpt/tests/css/cssom-view/getClientRects-zoom.html b/tests/wpt/tests/css/cssom-view/getClientRects-zoom.html
index d4c249eadb0..93d42aee87b 100644
--- a/tests/wpt/tests/css/cssom-view/getClientRects-zoom.html
+++ b/tests/wpt/tests/css/cssom-view/getClientRects-zoom.html
@@ -5,31 +5,30 @@
 <link rel="help" href="https://drafts.csswg.org/css-viewport/">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-  <head>
-    <style>
-      div {
+<style>
+      .test_content div {
         width: 64px;
         height: 64px;
         background-color: blue
       }
-      div.x4_zoom {
+      .test_content div.x4_zoom {
         zoom: 4.0;
         background-color: blueviolet;
       }
-      div.x2_zoom {
+      .test_content div.x2_zoom {
         background-color: chartreuse;
         zoom: 2.0;
       }
 
-      div.transform {
+      .test_content div.transform {
         transform: scale(2);
         transform-origin: top left;
       }
 
 
-    </style>
-  </head>
-  <body>
+</style>
+<body>
+  <div class="test_content">
     <div id="no_zoom"></div>
     <div class="x4_zoom" id="with_zoom">
     </div>
@@ -37,7 +36,8 @@
       <div class="x4_zoom" id="nested_zoom"></div>
     </div>
     <div id="transform_and_zoom" class="x4_zoom transform"></div>
-    <script>
+  </div>
+  <script>
       setup(() => {
         window.noZoom = document.getElementById("no_zoom");
         window.withZoom = document.getElementById("with_zoom");
@@ -76,6 +76,5 @@
         assert_equals(transformAndZoomRect.width, 512, 'transform and zoom width');
         assert_equals(transformAndZoomRect.height, 512, 'transform and zoom height');
       });
-    </script>
-  </body>
-`
\ No newline at end of file
+  </script>
+</body>
diff --git a/tests/wpt/tests/css/selectors/has-display-none-checked-ref.html b/tests/wpt/tests/css/selectors/has-display-none-checked-ref.html
new file mode 100644
index 00000000000..6e855f52caf
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/has-display-none-checked-ref.html
@@ -0,0 +1,3 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<div>PASS</div>
diff --git a/tests/wpt/tests/css/selectors/has-display-none-checked.html b/tests/wpt/tests/css/selectors/has-display-none-checked.html
new file mode 100644
index 00000000000..96b1f8bd048
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/has-display-none-checked.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>:has() invalidation inside display: none subtree</title>
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1875137">
+<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
+<link rel="match" href="has-display-none-checked-ref.html">
+<style>
+body:has(input:checked) #fail {
+  display: none;
+}
+body:not(:has(input:checked)) #pass {
+  display: none;
+}
+</style>
+<div style="display: none">
+  <input type="checkbox" id="on">
+</div>
+<div id="fail">FAIL</div>
+<div id="pass">PASS</div>
+<script>
+  document.addEventListener("TestRendered", function() {
+    document.querySelector("input").checked = true;
+    document.documentElement.className = "";
+  });
+</script>
diff --git a/tests/wpt/tests/css/selectors/invalidation/has-append-first-node.html b/tests/wpt/tests/css/selectors/invalidation/has-append-first-node.html
new file mode 100644
index 00000000000..82060cc99fa
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/invalidation/has-append-first-node.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="author" title="David Shin" href="mailto:dshin@mozilla.com">
+<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1874705">
+<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
+<style>
+#dut {
+  width: 100px;
+  height: 100px;
+  background: red;
+}
+#dut:has(span) {
+  background: green;
+}
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="dut"></div>
+<script>
+function raf() {
+  return new Promise(resolve => {
+    requestAnimationFrame(resolve);
+  });
+}
+
+async function go() {
+  await raf();
+  await raf();
+  const df = document.createDocumentFragment();
+  const t = document.createTextNode('\n');
+  df.appendChild(t);
+  const s = document.createElement("span");
+  df.appendChild(s);
+  dut.appendChild(df);
+  document.documentElement.className = '';
+}
+
+go();
+</script>
+</html>
diff --git a/tests/wpt/tests/css/selectors/invalidation/has-sibling-insertion-removal.html b/tests/wpt/tests/css/selectors/invalidation/has-sibling-insertion-removal.html
index 3c05a0f495a..0655b230524 100644
--- a/tests/wpt/tests/css/selectors/invalidation/has-sibling-insertion-removal.html
+++ b/tests/wpt/tests/css/selectors/invalidation/has-sibling-insertion-removal.html
@@ -20,6 +20,7 @@ div, main { color: grey }
 #subject11:has(+ #sibling11_1 + #sibling11_2 ~ #sibling11_3 > #siblingchild11_3_1) { color: blue }
 #subject12:has(+ #sibling12_2 ~ #sibling12_3 > #siblingchild12_3_1) { color: yellow }
 .sibling13:has(~ .sibling13) { color: green }
+#subject14:has(~ #sibling14_1 ~ #sibling14_2 ~ #sibling14_3) { color: green }
 </style>
 
 <main id="main">
@@ -108,6 +109,12 @@ div, main { color: grey }
     <div class="sibling13"></div>
     <div id="subject13" class="sibling13"></div>
   </div>
+  <div id="parent14">
+    <div id="subject14"></div>
+    <div id="sibling14_1"></div>
+    <div id="sibling14_2"></div>
+    <div id="sibling14_3"></div>
+  </div>
 </main>
 <script>
 
@@ -195,4 +202,8 @@ d.classList.add("sibling13");
 parent13.appendChild(d);
 testColor(`subject13: color after #sibling12_1 removed should be ${green}`,
           subject13, green);
+
+testColor(`subject14: initial color should be ${green}`, subject14, green);
+sibling14_2.remove();
+testColor(`subject14: color after #sibling14_2 removed should be ${grey}`, subject14, grey);
 </script>
diff --git a/tests/wpt/tests/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html b/tests/wpt/tests/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html
new file mode 100644
index 00000000000..8082980e626
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Selector Invalidation: :has() with nesting parent containing :hover</title>
+<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
+<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>
+  dd, dt { background: white; }
+  dd:hover {
+    dt:has(~ &) { background: lime; }
+  }
+</style>
+<dt id=dt1>#dt1</dt>
+<dd id=dd1>#dd1, Hover me, the DT above should go lime</dd>
+<dt id=dt2>#dt2</dt>
+<dd id=dd2>#dd2, Hover me, both DTs above should go lime</dd>
+<script>
+  const white = 'rgb(255, 255, 255)';
+  const lime = 'rgb(0, 255, 0)';
+
+  function bg_color(element, color, message) {
+    assert_equals(getComputedStyle(element)['background-color'], color, message);
+  }
+
+  promise_test(async () => {
+    bg_color(dt1, white, "#dt1 initially white");
+    bg_color(dd1, white, "#dd1 initially white");
+    bg_color(dt2, white, "#dt2 initially white");
+    bg_color(dd2, white, "#dd2 initially white");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dd1}).send();
+
+    bg_color(dt1, lime, "#dt1 should go lime when hover #dd1");
+    bg_color(dd1, white, "#dd1 doesn't change when hover #dd1");
+    bg_color(dt2, white, "#dt2 doesn't change when hover #dd1");
+    bg_color(dd2, white, "#dd2 doesn't change when hover #dd1");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dt1}).send();
+
+    bg_color(dt1, white, "#dt1 should go white when hover #dt2");
+    bg_color(dd1, white, "#dd1 doesn't change when hover #dt2");
+    bg_color(dt2, white, "#dt2 doesn't change when hover #dt2");
+    bg_color(dd2, white, "#dd2 doesn't change when hover #dt2");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dd2}).send();
+
+    bg_color(dt1, lime, "#dt1 should go lime when hover #dd2");
+    bg_color(dd1, white, "#dd1 doesn't change when hover #dd2");
+    bg_color(dt2, lime, "#dt2 should go lime when hover #dd2");
+    bg_color(dd2, white, "#dd2 doesn't change when hover #dd2");
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/selectors/parsing/invalid-pseudos.html b/tests/wpt/tests/css/selectors/parsing/invalid-pseudos.html
index a09572b6517..4076e5302bd 100644
--- a/tests/wpt/tests/css/selectors/parsing/invalid-pseudos.html
+++ b/tests/wpt/tests/css/selectors/parsing/invalid-pseudos.html
@@ -8,7 +8,10 @@
 <script src="../../support/parsing-testcommon.js"></script>
 <script>
 // Pseudo-classes
+test_invalid_selector(":-internal-animating-full-screen-transition");
 test_invalid_selector(":-internal-html-document");
+test_invalid_selector(":-khtml-drag");
+test_invalid_selector(":-webkit-animating-full-screen-transition");
 
 // Pseudo-elements
 test_invalid_selector("::-apple-attachment-controls-container");
diff --git a/tests/wpt/tests/css/selectors/parsing/parse-part.html b/tests/wpt/tests/css/selectors/parsing/parse-part.html
index f0bec6fbc9b..2fbec3670ce 100644
--- a/tests/wpt/tests/css/selectors/parsing/parse-part.html
+++ b/tests/wpt/tests/css/selectors/parsing/parse-part.html
@@ -31,4 +31,9 @@
   test_invalid_selector(":part('foo')");
   test_invalid_selector(":part([foo])");
   test_invalid_selector('::part(foo) + ::part(bar)');
+  test_invalid_selector("::part(foo):is(ul)");
+  test_invalid_selector("::part(foo):is(nav ul)");
+  test_invalid_selector("::part(foo):where(ul)");
+  test_invalid_selector("::part(foo):where(nav ul)");
+  test_invalid_selector("::part(foo):has(li)");
 </script>
diff --git a/tests/wpt/tests/css/support/color-testcommon.js b/tests/wpt/tests/css/support/color-testcommon.js
index 44ca0bbb33c..18ab4420f67 100644
--- a/tests/wpt/tests/css/support/color-testcommon.js
+++ b/tests/wpt/tests/css/support/color-testcommon.js
@@ -79,3 +79,50 @@ function fuzzy_test_valid_color(specified, parsed, epsilon) {
 
   test_valid_value("color", specified, parsed, {comparisonFunction: set_up_fuzzy_color_test(epsilon)});
 }
+
+/**
+ * Fuzzy color matcher for oklab color with optional transparency.
+ * @param {string} actual    Observed color
+ * @param {string} expected  What the color should be
+ * @param {string} message   Error message to facilitate diagnostics
+ */
+function assert_oklab_color(actual, expected, message) {
+  const paramMatch = '(\\-?\\d*\\.?\\d*)';
+  const optAlphaMatch = '( \\/ (\\d*\\.?\\d*))?';
+  const pattern =
+      `oklab\\(${paramMatch} ${paramMatch} ${paramMatch}${optAlphaMatch}\\)`;
+  const oklabRegex = new RegExp(pattern);
+   let matches =
+      expected.match(oklabRegex);
+  assert_true(!!matches,
+              `Expected value ${expected} not recognized as an oklab color`);
+
+  const p0 = parseFloat(matches[1]);
+  const p1 = parseFloat(matches[2]);
+  const p2 = parseFloat(matches[3]);
+  const alpha =
+      (matches[5] !== undefined) ? parseFloat(matches[5]) : undefined;
+
+  matches =
+      actual.match(oklabRegex);
+  assert_true(!!matches,
+              `Actual value ${actual} not recognized as an oklab color`);
+
+  const tolerance = 0.01;
+  let colorMatch =
+      Math.abs(parseFloat(matches[1]) - p0) <= tolerance &&
+      Math.abs(parseFloat(matches[2]) - p1) <= tolerance &&
+      Math.abs(parseFloat(matches[3]) - p2) <= tolerance;
+  if (colorMatch) {
+    if (alpha !== undefined) {
+        colorMatch =
+            matches[5] != undefined &&
+            Math.abs(parseFloat(matches[5]) - alpha) <= tolerance;
+    } else {
+      colorMatch = matches[5] == undefined;
+    }
+  }
+  assert_true(
+      colorMatch,
+      `expected: ${expected} actual ${actual} -- ${message}`);
+}
diff --git a/tests/wpt/tests/docs/requirements.txt b/tests/wpt/tests/docs/requirements.txt
index d8fb98888fd..7affe5ec629 100644
--- a/tests/wpt/tests/docs/requirements.txt
+++ b/tests/wpt/tests/docs/requirements.txt
@@ -2,5 +2,5 @@ recommonmark==0.7.1
 sphinx-argparse==0.4.0
 sphinx-autobuild==2021.3.14
 sphinx-js==3.2.2
-sphinx==4.4.0
+sphinx==7.2.6
 markupsafe==2.0.1
diff --git a/tests/wpt/tests/docs/writing-tests/testharness-api.md b/tests/wpt/tests/docs/writing-tests/testharness-api.md
index 56dc4a4417a..19b96b550b2 100644
--- a/tests/wpt/tests/docs/writing-tests/testharness-api.md
+++ b/tests/wpt/tests/docs/writing-tests/testharness-api.md
@@ -823,6 +823,29 @@ eventWatcher.wait_for('animationstart').then(t.step_func(function() {
 }));
 ```
 
+### Loading test data from JSON files ###
+
+```eval_rst
+.. js:autofunction:: fetch_json
+```
+
+Loading test data from a JSON file would normally be accomplished by
+something like this:
+
+```js
+promise_test(() => fetch('resources/my_data.json').then((res) => res.json()).then(runTests));
+function runTests(myData) {
+  /// ...
+}
+```
+
+However, `fetch()` is not exposed inside ShadowRealm scopes, so if the
+test is to be run inside a ShadowRealm, use `fetch_json()` instead:
+
+```js
+promise_test(() => fetch_json('resources/my_data.json').then(runTests));
+```
+
 ### Utility Functions ###
 
 ```eval_rst
diff --git a/tests/wpt/tests/docs/writing-tests/testharness.md b/tests/wpt/tests/docs/writing-tests/testharness.md
index e88d5741ca6..e426e37f22b 100644
--- a/tests/wpt/tests/docs/writing-tests/testharness.md
+++ b/tests/wpt/tests/docs/writing-tests/testharness.md
@@ -171,11 +171,12 @@ are:
   [ShadowRealm](https://github.com/tc39/proposal-shadowrealm) context hosted in
   an ordinary Window context; to be run at <code><var>x</var>.any.shadowrealm.html</code>
 
-To check if your test is run from a window or worker you can use the following two methods that will
+To check what scope your test is run from, you can use the following methods that will
 be made available by the framework:
 
     self.GLOBAL.isWindow()
     self.GLOBAL.isWorker()
+    self.GLOBAL.isShadowRealm()
 
 Although [the global `done()` function must be explicitly invoked for most
 dedicated worker tests and shared worker
@@ -203,6 +204,9 @@ In window environments, the script will be included using a classic `<script>` t
 worker environments, the script will be imported using `importScripts()`. In module worker
 environments, the script will be imported using a static `import`.
 
+wptserve generates markup with `/resources/testharness.js` and `/resources/testharnessreport.js`
+included automatically, so there's no need to include those scripts from the `.js` test file.
+
 ### Specifying a timeout of long
 
 Use `// META: timeout=long` at the beginning of the resource.
diff --git a/tests/wpt/tests/dom/events/scrolling/scrollend-fires-to-text-input.html b/tests/wpt/tests/dom/events/scrolling/scrollend-fires-to-text-input.html
new file mode 100644
index 00000000000..edc75d91217
--- /dev/null
+++ b/tests/wpt/tests/dom/events/scrolling/scrollend-fires-to-text-input.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <style>
+      #inputscroller {
+        width: 100px;
+        height: 50px;
+      }
+    </style>
+    <input type="text" id="inputscroller"
+    value="qwertyuiopasddfghjklzxcvbnmqwertyuiopasddfghjklzxcvbnmqwer">
+    <script>
+      promise_test(async() => {
+        const inputscroller = document.getElementById("inputscroller");
+        assert_equals(inputscroller.scrollLeft, 0,
+          "text input field is not initially scrolled.");
+
+        const scrollend_promise = new Promise((resolve) => {
+          inputscroller.addEventListener("scrollend", resolve);
+        });
+        inputscroller.scrollLeft = 10;
+        await scrollend_promise;
+        assert_equals(inputscroller.scrollLeft, 10,
+          "text input field is scrolled by the correct amount");
+      }, "scrolled input field should receive scrollend.");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/dom/observable/tentative/observable-toArray.any.js b/tests/wpt/tests/dom/observable/tentative/observable-toArray.any.js
new file mode 100644
index 00000000000..9e6e3abee56
--- /dev/null
+++ b/tests/wpt/tests/dom/observable/tentative/observable-toArray.any.js
@@ -0,0 +1,174 @@
+// Because we test that the global error handler is called at various times.
+setup({allow_uncaught_exception: true});
+
+promise_test(async () => {
+  const observable = new Observable(subscriber => {
+    subscriber.next(1);
+    subscriber.next(2);
+    subscriber.next(3);
+    subscriber.complete();
+  });
+
+  const array = await observable.toArray();
+  assert_array_equals(array, [1, 2, 3]);
+}, "toArray(): basic next/complete");
+
+promise_test(async t => {
+  let errorReported = null;
+  let innerSubscriber = null;
+  self.addEventListener('error', e => errorReported = e, {once: true});
+
+  const error = new Error("custom error");
+  const observable = new Observable(subscriber => {
+    innerSubscriber = subscriber;
+    subscriber.error(error);
+  });
+
+  try {
+    const array = await observable.toArray();
+    assert_unreached("toArray() promise must not resolve");
+  } catch (e) {
+    assert_equals(e, error);
+    assert_equals(errorReported, null);
+
+    // Calls to `error()` after the subscription is closed still report the
+    // exception.
+    innerSubscriber.error(error);
+    assert_not_equals(errorReported, null, "Exception was reported to global");
+    assert_true(errorReported.message.includes("custom error"), "Error message matches");
+    assert_greater_than(errorReported.lineno, 0, "Error lineno is greater than 0");
+    assert_greater_than(errorReported.colno, 0, "Error lineno is greater than 0");
+    assert_equals(errorReported.error, error, "Error object is equivalent");
+  }
+}, "toArray(): first error() rejects promise; subsequent error()s report the exceptions");
+
+promise_test(async t => {
+  let errorReported = null;
+  let innerSubscriber = null;
+  self.addEventListener('error', e => errorReported = e, {once: true});
+
+  const error = new Error("custom error");
+  const observable = new Observable(subscriber => {
+    innerSubscriber = subscriber;
+    subscriber.complete();
+  });
+
+  const array = await observable.toArray();
+  assert_array_equals(array, []);
+  assert_equals(errorReported, null);
+
+  // Calls to `error()` after the subscription is closed still report the
+  // exception.
+  innerSubscriber.error(error);
+  assert_not_equals(errorReported, null, "Exception was reported to global");
+  assert_true(errorReported.message.includes("custom error"), "Error message matches");
+  assert_greater_than(errorReported.lineno, 0, "Error lineno is greater than 0");
+  assert_greater_than(errorReported.colno, 0, "Error lineno is greater than 0");
+  assert_equals(errorReported.error, error, "Error object is equivalent");
+}, "toArray(): complete() resolves promise; subsequent error()s report the exceptions");
+
+promise_test(async () => {
+  // This tracks whether `postSubscriptionPromise` has had its then handler run.
+  // This helps us keep track of the timing/ordering of everything. Calling a
+  // Promise-returning operator with an aborted signal must *immediately* reject
+  // the returned Promise, which means code "awaiting" it should run before any
+  // subsequent Promise resolution/rejection handlers are run.
+  let postSubscriptionPromiseResolved = false;
+  let subscriptionImmediatelyInactive = false;
+
+  const observable = new Observable(subscriber => {
+    const inactive = !subscriber.active;
+    subscriptionImmediatelyInactive = inactive;
+  });
+
+  const rejectedPromise = observable.toArray({signal: AbortSignal.abort()})
+  .then(() => {
+    assert_unreached("Operator promise must not resolve its abort signal is " +
+                     "rejected");
+  }, () => {
+    // See the documentation above. The rejection handler (i.e., this code) for
+    // immediately-aborted operator Promises runs before any later-scheduled
+    // Promise resolution/rejections.
+    assert_false(postSubscriptionPromiseResolved,
+        "Operator promise rejects before later promise");
+  });
+  const postSubscriptionPromise =
+      Promise.resolve().then(() => postSubscriptionPromiseResolved = true);
+
+  await rejectedPromise;
+}, "toArray(): Subscribing with an aborted signal returns an immediately " +
+   "rejected promise");
+
+promise_test(async () => {
+  let postSubscriptionPromiseResolved = false;
+
+  const observable = new Observable(subscriber => {});
+  const controller = new AbortController();
+  const arrayPromise = observable.toArray({signal: controller.signal})
+  .then(() => {
+    assert_unreached("Operator promise must not resolve if its abort signal " +
+    "is rejected");
+  }, () => {
+    assert_false(postSubscriptionPromiseResolved,
+                 "controller.abort() synchronously rejects the operator " +
+                 "Promise");
+  });
+
+  // This must synchronously reject `arrayPromise`, scheduling in the next
+  // microtask.
+  controller.abort();
+  Promise.resolve().then(value => postSubscriptionPromiseResolved = true);
+
+  await arrayPromise;
+}, "toArray(): Aborting the passed-in signal rejects the returned promise");
+
+// See https://github.com/WICG/observable/issues/96 for discussion about this.
+promise_test(async () => {
+  const results = [];
+
+  const observable = new Observable(subscriber => {
+    results.push(`Subscribed. active: ${subscriber.active}`);
+
+    subscriber.signal.addEventListener('abort', e => {
+      results.push("Inner signal abort event");
+      Promise.resolve("Inner signal Promise").then(value => results.push(value));
+    });
+
+    subscriber.addTeardown(() => {
+      results.push("Teardown");
+      Promise.resolve("Teardown Promise").then(value => results.push(value));
+    });
+  });
+
+  const controller = new AbortController();
+  controller.signal.addEventListener('abort', e => {
+    results.push("Outer signal abort event");
+    Promise.resolve("Outer signal Promise").then(value => results.push(value));
+  });
+
+  // Subscribe.
+  observable.toArray({signal: controller.signal});
+  controller.abort();
+
+  assert_array_equals(results, [
+    "Subscribed. active: true",
+    "Outer signal abort event",
+    "Teardown",
+    "Inner signal abort event",
+  ], "Events and teardowns are fired in the right ordered");
+
+  // Everything microtask above should be queued up by now, so queue one more
+  // final microtask that will run after all of the others, wait for it, and the
+  // check `results` is right.
+  await Promise.resolve();
+  assert_array_equals(results, [
+    "Subscribed. active: true",
+    "Outer signal abort event",
+    "Teardown",
+    "Inner signal abort event",
+    "Outer signal Promise",
+    "Teardown Promise",
+    "Inner signal Promise",
+  ], "Promises resolve in the right order");
+}, "Operator Promise abort ordering");
+
diff --git a/tests/wpt/tests/editing/crashtests/delete-in-block-in-progress.html b/tests/wpt/tests/editing/crashtests/delete-in-block-in-progress.html
new file mode 100644
index 00000000000..233b834ab03
--- /dev/null
+++ b/tests/wpt/tests/editing/crashtests/delete-in-block-in-progress.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<script>
+document.addEventListener("DOMContentLoaded", () => {
+  document.querySelector("mo").appendChild(document.querySelector("dialog"));
+  getSelection().collapse(document.querySelector("template"), 0);
+  document.execCommand("delete");
+}, {once:true});
+</script>
+<body>
+<dialog>
+<template>
+</template>
+</dialog>
+<dl contenteditable>
+<li>
+<b><progress>
+<mo>a</mo>
+</progress></b>
+</li>
+</dl>
+</body>
+</html>
diff --git a/tests/wpt/tests/editing/crashtests/designMode-on-of-lazy-loading-iframe.html b/tests/wpt/tests/editing/crashtests/designMode-on-of-lazy-loading-iframe.html
new file mode 100644
index 00000000000..90a6c85c45c
--- /dev/null
+++ b/tests/wpt/tests/editing/crashtests/designMode-on-of-lazy-loading-iframe.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<style>
+*::first-letter {}
+</style>
+<script>
+addEventListener("load", () => {
+  const iframe = document.querySelector("iframe");
+  iframe.contentWindow.focus();
+  document.styleSheets[0].deleteRule(0);
+  iframe.contentWindow.document.designMode = "on";
+});
+</script>
+</head>
+<body>
+<iframe loading="lazy">
+</body>
+</html>
diff --git a/tests/wpt/tests/fenced-frame/resize-lock-input.https.html b/tests/wpt/tests/fenced-frame/resize-lock-input.https.html
index 9cee650f1a8..c72075ac250 100644
--- a/tests/wpt/tests/fenced-frame/resize-lock-input.https.html
+++ b/tests/wpt/tests/fenced-frame/resize-lock-input.https.html
@@ -6,50 +6,54 @@
   <script src="/resources/testdriver-actions.js"></script>
   <script src="/resources/testdriver-vendor.js"></script>
   <script src="resources/utils.js"></script>
+  <script src="/common/dispatcher/dispatcher.js"></script>
   <script src="/common/utils.js"></script>
 
   <body>
 
     <script>
       promise_test(async t => {
-        const resize_lock_inner_page_is_ready_key = token();
-        const resize_lock_resize_is_done_key = token();
-        const resize_lock_frame_requested_after_resize_key = token();
-        const resize_lock_report_click_location_key = token();
-        const resize_lock_report_click_location_key_after_resize = token();
-        const resize_lock_report_click_location_key_after_resize_2 = token();
+        const fencedframe = attachFencedFrameContext();
 
-        const frame = attachFencedFrame(generateURL(
-            "resources/resize-lock-inner-input.html",
-            [resize_lock_inner_page_is_ready_key,
-             resize_lock_resize_is_done_key,
-             resize_lock_frame_requested_after_resize_key,
-             resize_lock_report_click_location_key,
-             resize_lock_report_click_location_key_after_resize,
-             resize_lock_report_click_location_key_after_resize_2]));
+        // Set up the inner frame to receive mouse events.
+        await fencedframe.execute(() => {
+          window.testing_touchpoint = 'pending'
+          window.addEventListener('mousedown', async (event) => {
+            window.testing_touchpoint = event.clientX + "," + event.clientY;
+          });
+        });
 
-        await nextValueFromServer(resize_lock_inner_page_is_ready_key);
+        let getCoordinates = async () => {
+          return fencedframe.execute(() => {
+            let point = window.testing_touchpoint;
+            window.testing_touchpoint = 'pending';
+            return point;
+          });
+        }
 
         // Send an event to the origin of the frame.
-        await new test_driver.Actions()
-                 .setContext(window)
-                 .addPointer("finger1", "touch")
-                 .pointerMove(10, 10, {origin: "viewport", sourceName: "finger1"})
-                 .pointerDown({sourceName: "finger1"})
-                 .pointerUp({sourceName: "finger1"})
-                 .send();
+        for (let i = 0; i < 3; i++) {
+          await new test_driver.Actions()
+                  .setContext(window)
+                  .addPointer("finger1", "touch")
+                  .pointerMove(10, 10, {origin: "viewport", sourceName: "finger1"})
+                  .pointerDown({sourceName: "finger1"})
+                  .pointerUp({sourceName: "finger1"})
+                  .send();
+        }
 
-        let result =
-          await nextValueFromServer(resize_lock_report_click_location_key);
+        let result = await getCoordinates();
         assert_equals(result, "0,0", "fenced frame event before resize 1");
 
         // The frame should be frozen at 300x150. Resize to create a 2x scale
         // and a horizontal offset of 50px.
         frame.width = "700";
         frame.height = "300";
-        writeValueToServer(resize_lock_resize_is_done_key,
-                           "outer_page_attempted_resize");
-        await nextValueFromServer(resize_lock_frame_requested_after_resize_key);
+
+        // Let the inner frame animate in order for the resize to take effect.
+        await fencedframe.execute(async () => {
+          await new Promise(resolve => requestAnimationFrame(resolve));
+        });
 
         // The hit-test data is replicated in the browser and updated
         // asynchronously. Wait to ensure the update has finished.
@@ -62,38 +66,44 @@
                 assert_equals(result, "10,10", "main frame event after resize");
               });
             });
-            await new test_driver.Actions()
-                     .setContext(window)
-                     .addPointer("finger1", "touch")
-                     .pointerMove(10, 10, {origin: "viewport", sourceName: "finger1"})
-                     .pointerDown({sourceName: "finger1"})
-                     .pointerUp({sourceName: "finger1"})
-                     .send();
+            for (let i = 0; i < 3; i++) {
+              await new test_driver.Actions()
+                      .setContext(window)
+                      .addPointer("finger1", "touch")
+                      .pointerMove(10, 10, {origin: "viewport", sourceName: "finger1"})
+                      .pointerDown({sourceName: "finger1"})
+                      .pointerUp({sourceName: "finger1"})
+                      .send();
+            }
             await promise;
 
             // Send an event to where the origin of the scaled frame should
             // render.
-            await new test_driver.Actions()
-                     .setContext(window)
-                     .addPointer("finger1", "touch")
-                     .pointerMove(60, 10, {origin: "viewport", sourceName: "finger1"})
-                     .pointerDown({sourceName: "finger1"})
-                     .pointerUp({sourceName: "finger1"})
-                     .send();
-            result = await nextValueFromServer(resize_lock_report_click_location_key_after_resize);
-            assert_equals(result, "0,0", "fenced frame event before resize 2");
+            for (let i = 0; i < 3; i++) {
+              await new test_driver.Actions()
+                      .setContext(window)
+                      .addPointer("finger1", "touch")
+                      .pointerMove(60, 10, {origin: "viewport", sourceName: "finger1"})
+                      .pointerDown({sourceName: "finger1"})
+                      .pointerUp({sourceName: "finger1"})
+                      .send();
+            }
+            result = await getCoordinates();
+            assert_equals(result, "0,0", "fenced frame event after resize 1");
 
             // Send an event where the bottom left of the scaled frame should
             // render.
-            await new test_driver.Actions()
-                     .setContext(window)
-                     .addPointer("finger1", "touch")
-                     .pointerMove(660, 310, {origin: "viewport", sourceName: "finger1"})
-                     .pointerDown({sourceName: "finger1"})
-                     .pointerUp({sourceName: "finger1"})
-                     .send();
-            result = await nextValueFromServer(resize_lock_report_click_location_key_after_resize_2);
-            assert_equals(result, "300,150", "fenced frame event before resize 3");
+            for (let i = 0; i < 3; i++) {
+              await new test_driver.Actions()
+                      .setContext(window)
+                      .addPointer("finger1", "touch")
+                      .pointerMove(660, 310, {origin: "viewport", sourceName: "finger1"})
+                      .pointerDown({sourceName: "finger1"})
+                      .pointerUp({sourceName: "finger1"})
+                      .send();
+            }
+            result = await getCoordinates();
+            assert_equals(result, "300,150", "fenced frame event after resize 2");
         }, 1000);
       }, "Test Resize Lock");
     </script>
diff --git a/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html b/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html
deleted file mode 100644
index 5513f89d393..00000000000
--- a/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html
+++ /dev/null
@@ -1,46 +0,0 @@
-<!DOCTYPE html>
-  <script src="utils.js"></script>
-  <title>Fenced frame content to report any changes in inner dimensions</title>
-
-  <style>
-    body {
-      width: 500px;
-      height: 500px;
-      background: grey;
-    }
-  </style>
-  <body>
-    <script>
-      let eventCount = 0;
-      async function init() {
-        const [resize_lock_inner_page_is_ready_key,
-               resize_lock_resize_is_done_key,
-               resize_lock_frame_requested_after_resize_key,
-               resize_lock_report_click_location_key,
-               resize_lock_report_click_location_key_after_resize,
-               resize_lock_report_click_location_key_after_resize_2] = parseKeylist();
-
-        window.addEventListener('mousedown', async (event) => {
-          eventCount++;
-          let point = event.clientX + "," + event.clientY;
-          if (eventCount == 1) {
-            writeValueToServer(resize_lock_report_click_location_key, point);
-            await nextValueFromServer(resize_lock_resize_is_done_key)
-            await new Promise(resolve => requestAnimationFrame(resolve));
-            writeValueToServer(resize_lock_frame_requested_after_resize_key, "ready");
-          } else if (eventCount == 2) {
-            writeValueToServer(
-              resize_lock_report_click_location_key_after_resize, point);
-          } else {
-            writeValueToServer(
-              resize_lock_report_click_location_key_after_resize_2, point);
-          }
-        });
-
-        writeValueToServer(resize_lock_inner_page_is_ready_key, "ready");
-      }
-
-      init();
-    </script>
-  </body>
-</html>
diff --git a/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html.headers b/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html.headers
deleted file mode 100644
index 1b63235b7cd..00000000000
--- a/tests/wpt/tests/fenced-frame/resources/resize-lock-inner-input.html.headers
+++ /dev/null
@@ -1 +0,0 @@
-Supports-Loading-Mode: fenced-frame
diff --git a/tests/wpt/tests/fetch/api/basic/keepalive.any.js b/tests/wpt/tests/fetch/api/basic/keepalive.any.js
index 899d41d676a..d6ec1f67920 100644
--- a/tests/wpt/tests/fetch/api/basic/keepalive.any.js
+++ b/tests/wpt/tests/fetch/api/basic/keepalive.any.js
@@ -1,7 +1,6 @@
 // META: global=window
+// META: timeout=long
 // META: title=Fetch API: keepalive handling
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=../resources/keepalive-helper.js
diff --git a/tests/wpt/tests/fetch/api/cors/cors-keepalive.any.js b/tests/wpt/tests/fetch/api/cors/cors-keepalive.any.js
index 08229f9cfc7..f54bf4f9b60 100644
--- a/tests/wpt/tests/fetch/api/cors/cors-keepalive.any.js
+++ b/tests/wpt/tests/fetch/api/cors/cors-keepalive.any.js
@@ -1,8 +1,6 @@
 // META: global=window
 // META: timeout=long
 // META: title=Fetch API: keepalive handling
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=../resources/keepalive-helper.js
diff --git a/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.any.js b/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.any.js
index beda8bb8e78..c9ac13f3dbb 100644
--- a/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.any.js
+++ b/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.any.js
@@ -1,7 +1,6 @@
 // META: global=window
+// META: timeout=long
 // META: title=Fetch API: keepalive handling
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=../resources/keepalive-helper.js
diff --git a/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.https.any.js b/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.https.any.js
index 6765ecac6d7..54e4bc31fa1 100644
--- a/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.https.any.js
+++ b/tests/wpt/tests/fetch/api/redirect/redirect-keepalive.https.any.js
@@ -1,7 +1,5 @@
 // META: global=window
 // META: title=Fetch API: keepalive handling
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=../resources/keepalive-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/activate-after.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/activate-after.tentative.https.window.js
index 08750dd3fe4..18b368066b2 100644
--- a/tests/wpt/tests/fetch/fetch-later/activate-after.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/activate-after.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/dispatcher/dispatcher.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/common/utils.js
diff --git a/tests/wpt/tests/fetch/fetch-later/basic.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/basic.tentative.https.window.js
index bf92716681e..37f72ab89e5 100644
--- a/tests/wpt/tests/fetch/fetch-later/basic.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/basic.tentative.https.window.js
@@ -1,6 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
-
 'use strict';
 
 test(() => {
diff --git a/tests/wpt/tests/fetch/fetch-later/iframe.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/iframe.tentative.https.window.js
index 62505bc81d9..1e9fed11175 100644
--- a/tests/wpt/tests/fetch/fetch-later/iframe.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/iframe.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/new-window.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/new-window.tentative.https.window.js
index 37b38d7f1dc..93705418f21 100644
--- a/tests/wpt/tests/fetch/fetch-later/new-window.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/new-window.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/non-secure.window.js b/tests/wpt/tests/fetch/fetch-later/non-secure.window.js
index 2f2c3ea8d34..c13932e353c 100644
--- a/tests/wpt/tests/fetch/fetch-later/non-secure.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/non-secure.window.js
@@ -1,6 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
-
 'use strict';
 
 test(() => {
diff --git a/tests/wpt/tests/fetch/fetch-later/policies/csp-allowed.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/policies/csp-allowed.tentative.https.window.js
index 5aa759c2346..60730e0242b 100644
--- a/tests/wpt/tests/fetch/fetch-later/policies/csp-allowed.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/policies/csp-allowed.tentative.https.window.js
@@ -1,6 +1,4 @@
 // META: title=FetchLater: allowed by CSP
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/policies/csp-blocked.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/policies/csp-blocked.tentative.https.window.js
index 88490950d3a..b32ddaecfcb 100644
--- a/tests/wpt/tests/fetch/fetch-later/policies/csp-blocked.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/policies/csp-blocked.tentative.https.window.js
@@ -1,6 +1,4 @@
 // META: title=FetchLater: blocked by CSP
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/policies/csp-redirect-to-blocked.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/policies/csp-redirect-to-blocked.tentative.https.window.js
index db6b4234b97..3c18727156f 100644
--- a/tests/wpt/tests/fetch/fetch-later/policies/csp-redirect-to-blocked.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/policies/csp-redirect-to-blocked.tentative.https.window.js
@@ -1,6 +1,4 @@
 // META: title=FetchLater: redirect blocked by CSP
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/quota.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/quota.tentative.https.window.js
index 4fc5979374c..1b5b85563d5 100644
--- a/tests/wpt/tests/fetch/fetch-later/quota.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/quota.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/common/utils.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
diff --git a/tests/wpt/tests/fetch/fetch-later/send-on-deactivate.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/send-on-deactivate.tentative.https.window.js
index 94877e8321a..d91c73580a3 100644
--- a/tests/wpt/tests/fetch/fetch-later/send-on-deactivate.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/send-on-deactivate.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/dispatcher/dispatcher.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/common/utils.js
diff --git a/tests/wpt/tests/fetch/fetch-later/send-on-discard/not-send-after-abort.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/send-on-discard/not-send-after-abort.tentative.https.window.js
index c49e0bde87b..ff8d9520e0e 100644
--- a/tests/wpt/tests/fetch/fetch-later/send-on-discard/not-send-after-abort.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/send-on-discard/not-send-after-abort.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
 
diff --git a/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple-with-activate-after.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple-with-activate-after.tentative.https.window.js
index 03078b2b516..11e85b31a79 100644
--- a/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple-with-activate-after.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple-with-activate-after.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
 // META: timeout=long
diff --git a/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple.tentative.https.window.js b/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple.tentative.https.window.js
index 25ce98d446e..df34ec9ac06 100644
--- a/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple.tentative.https.window.js
+++ b/tests/wpt/tests/fetch/fetch-later/send-on-discard/send-multiple.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=/pending-beacon/resources/pending_beacon-helper.js
 // META: timeout=long
diff --git a/tests/wpt/tests/fetch/private-network-access/location.tentative.https.window.js b/tests/wpt/tests/fetch/private-network-access/location.tentative.https.window.js
deleted file mode 100644
index 2d839e060d4..00000000000
--- a/tests/wpt/tests/fetch/private-network-access/location.tentative.https.window.js
+++ /dev/null
@@ -1,191 +0,0 @@
-// META: script=/common/subset-tests-by-key.js
-// META: script=/common/dispatcher/dispatcher.js
-// META: script=/common/utils.js
-// META: script=resources/support.sub.js
-// META: timeout=long
-// META: variant=?include=from-local
-// META: variant=?include=from-private
-// META: variant=?include=from-public
-// META: variant=?include=from-treat-as-public
-//
-// These tests verify that secure contexts can navigate to less-public address
-// spaces via updating window.location iff the target server responds
-// affirmatively to preflight requests.
-
-setup(() => {
-  assert_true(window.isSecureContext);
-});
-
-// Source: secure local context.
-//
-// All fetches unaffected by Private Network Access.
-
-subsetTestByKey("from-local", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_LOCAL },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to local: no preflight required.");
-
-subsetTestByKey("from-local", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to private: no preflight required.");
-
-subsetTestByKey("from-local", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to public: no preflight required.");
-
-// Generates tests of preflight behavior for a single (source, target) pair.
-//
-// Scenarios:
-//
-//   - preflight response has non-2xx HTTP code
-//   - preflight response is missing CORS headers
-//   - preflight response is missing the PNA-specific `Access-Control` header
-//   - success
-//
-function makePreflightTests({
-  key,
-  sourceName,
-  sourceServer,
-  sourceTreatAsPublic,
-  targetName,
-  targetServer,
-}) {
-  const prefix =
-      `${sourceName} to ${targetName}: `;
-
-  const source = {
-    server: sourceServer,
-    treatAsPublic: sourceTreatAsPublic,
-  };
-
-  promise_test_parallel(t => locationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.failure() },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "failed preflight.");
-
-  promise_test_parallel(t => locationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.noCorsHeader(token()) },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "missing CORS headers.");
-
-  promise_test_parallel(t => locationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.noPnaHeader(token()) },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "missing PNA header.");
-
-  promise_test_parallel(t => locationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.navigation(token()) },
-    },
-    expected: NavigationTestResult.SUCCESS,
-  }), prefix + "success.");
-}
-
-// Source: private secure context.
-//
-// Navigating to the local address space require a successful preflight response
-// carrying a PNA-specific header.
-
-subsetTestByKey('from-private', makePreflightTests, {
-  sourceServer: Server.HTTPS_PRIVATE,
-  sourceName: 'private',
-  targetServer: Server.HTTPS_LOCAL,
-  targetName: 'local',
-});
-
-subsetTestByKey("from-private", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_PRIVATE },
-  target: { server: Server.HTTPS_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to private: no preflight required.");
-
-subsetTestByKey("from-private", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_PRIVATE },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to public: no preflight required.");
-
-// Source: public secure context.
-//
-// Navigating to the local and private address spaces require a successful
-// preflight response carrying a PNA-specific header.
-
-subsetTestByKey('from-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_PUBLIC,
-  sourceName: "public",
-  targetServer: Server.HTTPS_LOCAL,
-  targetName: "local",
-});
-
-subsetTestByKey('from-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_PUBLIC,
-  sourceName: "public",
-  targetServer: Server.HTTPS_PRIVATE,
-  targetName: "private",
-});
-
-subsetTestByKey("from-public", promise_test_parallel, t => locationTest(t, {
-  source: { server: Server.HTTPS_PUBLIC },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "public to public: no preflight required.");
-
-// The following tests verify that `CSP: treat-as-public-address` makes
-// documents behave as if they had been served from a public IP address.
-
-subsetTestByKey('from-treat-as-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_LOCAL,
-  sourceTreatAsPublic: true,
-  sourceName: "treat-as-public-address",
-  targetServer: Server.OTHER_HTTPS_LOCAL,
-  targetName: "local",
-});
-
-subsetTestByKey("from-treat-as-public", promise_test_parallel,
-    t => locationTest(t, {
-      source: {
-        server: Server.HTTPS_LOCAL,
-        treatAsPublic: true,
-      },
-      target: {server: Server.HTTPS_LOCAL},
-      expected: NavigationTestResult.SUCCESS,
-    }),
-    'treat-as-public-address to local (same-origin): no preflight required.');
-
-subsetTestByKey('from-treat-as-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_LOCAL,
-  sourceTreatAsPublic: true,
-  sourceName: 'treat-as-public-address',
-  targetServer: Server.HTTPS_PRIVATE,
-  targetName: 'private',
-});
-
-subsetTestByKey("from-treat-as-public", promise_test_parallel,
-    t => locationTest(t, {
-      source: {
-        server: Server.HTTPS_LOCAL,
-        treatAsPublic: true,
-      },
-      target: {server: Server.HTTPS_PUBLIC},
-      expected: NavigationTestResult.SUCCESS,
-    }),
-    'treat-as-public-address to public: no preflight required.');
diff --git a/tests/wpt/tests/fetch/private-network-access/location.tentative.window.js b/tests/wpt/tests/fetch/private-network-access/location.tentative.window.js
deleted file mode 100644
index 180c2a4658e..00000000000
--- a/tests/wpt/tests/fetch/private-network-access/location.tentative.window.js
+++ /dev/null
@@ -1,95 +0,0 @@
-// META: script=/common/dispatcher/dispatcher.js
-// META: script=/common/utils.js
-// META: script=resources/support.sub.js
-// META: timeout=long
-//
-// Spec: https://wicg.github.io/private-network-access/
-//
-// These tests verify that non-secure contexts cannot navigate to less-public
-// address spaces via window.location.
-
-setup(() => {
-  // Making sure we are in a non secure context, as expected.
-  assert_false(window.isSecureContext);
-});
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to local: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to private: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to public: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "private to local: failure.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to private: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to public: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "public to local: failure.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.FAILURE,
-}), "public to private: failure.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "public to public: no preflight required.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "treat-as-public-address to local: failure.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.FAILURE,
-}), "treat-as-public-address to private: failure.");
-
-promise_test_parallel(t => locationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "treat-as-public-address to public: no preflight required.");
diff --git a/tests/wpt/tests/fetch/private-network-access/resources/support.sub.js b/tests/wpt/tests/fetch/private-network-access/resources/support.sub.js
index 308e86b08ac..46a9d9e0764 100644
--- a/tests/wpt/tests/fetch/private-network-access/resources/support.sub.js
+++ b/tests/wpt/tests/fetch/private-network-access/resources/support.sub.js
@@ -663,51 +663,6 @@ const iframeGrandparentTest = ({
   assert_equals(result, expected);
 }, name);
 
-async function locationTest(t, { source, target, expected }) {
-  const targetUuid = token();
-  const targetUrl = preflightUrl(target);
-  targetUrl.searchParams.set("file", "executor.html");
-  targetUrl.searchParams.set("executor-uuid", targetUuid);
-
-  const sourceUrl = resolveUrl(
-      'resources/update-location.html', sourceResolveOptions(source));
-  sourceUrl.searchParams.set("url", targetUrl.href);
-  window.open(sourceUrl);
-
-  const targetContext = new RemoteContext(targetUuid);
-  const result = await Promise.race([
-    targetContext.execute_script(() => 'success', []),
-    new Promise((resolve) => {
-      t.step_timeout(() => resolve('timeout'), 10000 /* ms */);
-    }),
-  ]);
-  assert_equals(result, expected);
-}
-
-async function topLocationTest(t, { source, target, expected }) {
-  const targetUuid = token();
-  const targetUrl = preflightUrl(target);
-  targetUrl.searchParams.set("file", "executor.html");
-  targetUrl.searchParams.set("executor-uuid", targetUuid);
-
-  const sourceUrl = resolveUrl(
-      'resources/update-location.html', sourceResolveOptions(source));
-  sourceUrl.searchParams.set("url", targetUrl.href);
-
-  const topUrl = resolveUrl('resources/iframer.html');
-  topUrl.searchParams.set("url", sourceUrl);
-  window.open(topUrl);
-
-  const targetContext = new RemoteContext(targetUuid);
-  const result = await Promise.race([
-    targetContext.execute_script(() => 'success', []),
-    new Promise((resolve) => {
-      t.step_timeout(() => resolve('timeout'), 10000 /* ms */);
-    }),
-  ]);
-  assert_equals(result, expected);
-}
-
 const WebsocketTestResult = {
   SUCCESS: "open",
 
diff --git a/tests/wpt/tests/fetch/private-network-access/resources/update-location.html b/tests/wpt/tests/fetch/private-network-access/resources/update-location.html
deleted file mode 100644
index a0f2b43856a..00000000000
--- a/tests/wpt/tests/fetch/private-network-access/resources/update-location.html
+++ /dev/null
@@ -1,8 +0,0 @@
-<!DOCTYPE html>
-<meta charset="utf-8">
-<title>Update Location</title>
-<body></body>
-<script>
-  const url = new URL(window.location).searchParams.get("url");
-  top.location.href = url;
-</script>
diff --git a/tests/wpt/tests/fetch/private-network-access/top-location.tentative.https.window.js b/tests/wpt/tests/fetch/private-network-access/top-location.tentative.https.window.js
deleted file mode 100644
index c22b76385ff..00000000000
--- a/tests/wpt/tests/fetch/private-network-access/top-location.tentative.https.window.js
+++ /dev/null
@@ -1,191 +0,0 @@
-// META: script=/common/subset-tests-by-key.js
-// META: script=/common/dispatcher/dispatcher.js
-// META: script=/common/utils.js
-// META: script=resources/support.sub.js
-// META: timeout=long
-// META: variant=?include=from-local
-// META: variant=?include=from-private
-// META: variant=?include=from-public
-// META: variant=?include=from-treat-as-public
-//
-// These tests verify that iframes in secure contexts can navigate its top
-// window to less-public address spaces via updating window.location iff the
-// target server responds affirmatively to preflight requests.
-
-setup(() => {
-  assert_true(window.isSecureContext);
-});
-
-// Source: secure local context.
-//
-// All fetches unaffected by Private Network Access.
-
-subsetTestByKey("from-local", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_LOCAL },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to local: no preflight required.");
-
-subsetTestByKey("from-local", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to private: no preflight required.");
-
-subsetTestByKey("from-local", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_LOCAL },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to public: no preflight required.");
-
-// Generates tests of preflight behavior for a single (source, target) pair.
-//
-// Scenarios:
-//
-//   - preflight response has non-2xx HTTP code
-//   - preflight response is missing CORS headers
-//   - preflight response is missing the PNA-specific `Access-Control` header
-//   - success
-//
-function makePreflightTests({
-  key,
-  sourceName,
-  sourceServer,
-  sourceTreatAsPublic,
-  targetName,
-  targetServer,
-}) {
-  const prefix =
-      `${sourceName} to ${targetName}: `;
-
-  const source = {
-    server: sourceServer,
-    treatAsPublic: sourceTreatAsPublic,
-  };
-
-  promise_test_parallel(t => topLocationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.failure() },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "failed preflight.");
-
-  promise_test_parallel(t => topLocationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.noCorsHeader(token()) },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "missing CORS headers.");
-
-  promise_test_parallel(t => topLocationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.noPnaHeader(token()) },
-    },
-    expected: NavigationTestResult.FAILURE,
-  }), prefix + "missing PNA header.");
-
-  promise_test_parallel(t => topLocationTest(t, {
-    source,
-    target: {
-      server: targetServer,
-      behavior: { preflight: PreflightBehavior.navigation(token()) },
-    },
-    expected: NavigationTestResult.SUCCESS,
-  }), prefix + "success.");
-}
-
-// Source: private secure context.
-//
-// Navigating to the local address space require a successful preflight response
-// carrying a PNA-specific header.
-
-subsetTestByKey('from-private', makePreflightTests, {
-  sourceServer: Server.HTTPS_PRIVATE,
-  sourceName: 'private',
-  targetServer: Server.HTTPS_LOCAL,
-  targetName: 'local',
-});
-
-subsetTestByKey("from-private", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_PRIVATE },
-  target: { server: Server.HTTPS_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to private: no preflight required.");
-
-subsetTestByKey("from-private", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_PRIVATE },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to public: no preflight required.");
-
-// Source: public secure context.
-//
-// Navigating to the local and private address spaces require a successful
-// preflight response carrying a PNA-specific header.
-
-subsetTestByKey('from-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_PUBLIC,
-  sourceName: "public",
-  targetServer: Server.HTTPS_LOCAL,
-  targetName: "local",
-});
-
-subsetTestByKey('from-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_PUBLIC,
-  sourceName: "public",
-  targetServer: Server.HTTPS_PRIVATE,
-  targetName: "private",
-});
-
-subsetTestByKey("from-public", promise_test_parallel, t => topLocationTest(t, {
-  source: { server: Server.HTTPS_PUBLIC },
-  target: { server: Server.HTTPS_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "public to public: no preflight required.");
-
-// The following tests verify that `CSP: treat-as-public-address` makes
-// documents behave as if they had been served from a public IP address.
-
-subsetTestByKey('from-treat-as-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_LOCAL,
-  sourceTreatAsPublic: true,
-  sourceName: "treat-as-public-address",
-  targetServer: Server.OTHER_HTTPS_LOCAL,
-  targetName: "local",
-});
-
-subsetTestByKey("from-treat-as-public", promise_test_parallel,
-    t => topLocationTest(t, {
-      source: {
-        server: Server.HTTPS_LOCAL,
-        treatAsPublic: true,
-      },
-      target: {server: Server.HTTPS_LOCAL},
-      expected: NavigationTestResult.SUCCESS,
-    }),
-    'treat-as-public-address to local (same-origin): no preflight required.');
-
-subsetTestByKey('from-treat-as-public', makePreflightTests, {
-  sourceServer: Server.HTTPS_LOCAL,
-  sourceTreatAsPublic: true,
-  sourceName: 'treat-as-public-address',
-  targetServer: Server.HTTPS_PRIVATE,
-  targetName: 'private',
-});
-
-subsetTestByKey("from-treat-as-public", promise_test_parallel,
-    t => topLocationTest(t, {
-      source: {
-        server: Server.HTTPS_LOCAL,
-        treatAsPublic: true,
-      },
-      target: {server: Server.HTTPS_PUBLIC},
-      expected: NavigationTestResult.SUCCESS,
-    }),
-    'treat-as-public-address to public: no preflight required.');
diff --git a/tests/wpt/tests/fetch/private-network-access/top-location.tentative.window.js b/tests/wpt/tests/fetch/private-network-access/top-location.tentative.window.js
deleted file mode 100644
index a759852393b..00000000000
--- a/tests/wpt/tests/fetch/private-network-access/top-location.tentative.window.js
+++ /dev/null
@@ -1,95 +0,0 @@
-// META: script=/common/dispatcher/dispatcher.js
-// META: script=/common/utils.js
-// META: script=resources/support.sub.js
-// META: timeout=long
-//
-// Spec: https://wicg.github.io/private-network-access/
-//
-// These tests verify that iframes in non-secure contexts cannot navigate its
-// top window to less-public address spaces via window.location.
-
-setup(() => {
-  // Making sure we are in a non secure context, as expected.
-  assert_false(window.isSecureContext);
-});
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to local: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to private: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_LOCAL },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "local to public: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "private to local: failure.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to private: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PRIVATE },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "private to public: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "public to local: failure.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.FAILURE,
-}), "public to private: failure.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: { server: Server.HTTP_PUBLIC },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "public to public: no preflight required.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_LOCAL },
-  expected: NavigationTestResult.FAILURE,
-}), "treat-as-public-address to local: failure.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_PRIVATE },
-  expected: NavigationTestResult.FAILURE,
-}), "treat-as-public-address to private: failure.");
-
-promise_test_parallel(t => topLocationTest(t, {
-  source: {
-    server: Server.HTTP_LOCAL,
-    treatAsPublic: true,
-  },
-  target: { server: Server.HTTP_PUBLIC },
-  expected: NavigationTestResult.SUCCESS,
-}), "treat-as-public-address to public: no preflight required.");
diff --git a/tests/wpt/tests/fledge/tentative/TODO b/tests/wpt/tests/fledge/tentative/TODO
index 8a416f17e57..0f68a7c9146 100644
--- a/tests/wpt/tests/fledge/tentative/TODO
+++ b/tests/wpt/tests/fledge/tentative/TODO
@@ -1,5 +1,11 @@
 Need tests for (likely not a complete list):
 
+* Test how InterestGroup values affected by k-anon checks are passed to generateBid.
+  * adSizes, sizeGroups, ads, and adComponents all need such tests.
+  * adSizes and sizeGroups currently have no tests, since they are incorectly
+      currently not passed to generateBid at all.
+* Test empty ads array:
+   Maybe simplest to test its numBids is empty?  Hard to test a script isn't run.
 * directFromSellerSignals.
     * The expected order when both responses use the same ad slot is currently
         undefined. However, we are in the process of resolving this matter by
diff --git a/tests/wpt/tests/fledge/tentative/interest-group-passed-to-generate-bid.https.window.js b/tests/wpt/tests/fledge/tentative/interest-group-passed-to-generate-bid.https.window.js
index 11a63c1aa59..2fb346bbe3b 100644
--- a/tests/wpt/tests/fledge/tentative/interest-group-passed-to-generate-bid.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/interest-group-passed-to-generate-bid.https.window.js
@@ -9,7 +9,17 @@
 // META: variant=?16-20
 // META: variant=?21-25
 // META: variant=?26-30
-// META: variant=?31-last
+// META: variant=?31-35
+// META: variant=?36-40
+// META: variant=?41-45
+// META: variant=?46-50
+// META: variant=?51-55
+// META: variant=?56-60
+// META: variant=?61-65
+// META: variant=?66-70
+// META: variant=?71-75
+// META: variant=?76-80
+// META: variant=?81-85
 
 "use strict;"
 
@@ -17,6 +27,19 @@
 // and are normalized if necessary. This test does not check the behaviors of the
 // fields.
 
+// Modifies "ads". Replaces "REPLACE_WITH_UUID" in all "renderURL" fields of
+// objects in "ads" array with "uuid". Generated ad URLs have embedded
+// UUIDs to prevent InterestGroups unexpectedly left over from one test from
+// messing up another test, but these tests need ad URLs before the UUID is
+// generated. To get around that, "REPLACE_WITH_UUID" is used in place of UUIDs
+// and then this is used to replace them with the real UUID.
+function updateAdRenderURLs(ads, uuid) {
+  for (let i = 0; i < ads.length; ++i) {
+    let ad = ads[i];
+    ad.renderURL = ad.renderURL.replace('REPLACE_WITH_UUID', uuid);
+  }
+}
+
 const makeTest = ({
   // Test name.
   name,
@@ -35,6 +58,19 @@ const makeTest = ({
   subsetTest(promise_test, async test => {
     const uuid = generateUuid(test);
 
+    // It's not strictly necessary to replace UUIDs in "adComponents", but do it for consistency.
+    if (fieldName === 'ads' || fieldName === 'adComponents' && fieldValue) {
+      updateAdRenderURLs(fieldValue, uuid);
+    }
+
+    if (interestGroupOverrides.ads) {
+      updateAdRenderURLs(interestGroupOverrides.ads, uuid);
+    }
+
+    if (interestGroupOverrides.adComponents) {
+      updateAdRenderURLs(interestGroupOverrides.adComponents, uuid);
+    }
+
     if (!(fieldName in interestGroupOverrides) && fieldValue !== undefined)
       interestGroupOverrides[fieldName] = fieldValue;
 
@@ -50,12 +86,22 @@ const makeTest = ({
       origin = new URL(interestGroupOverrides.owner).origin;
 
     interestGroupOverrides.biddingLogicURL =
-      createBiddingScriptURL(
-          { origin: origin,
-            generateBid:
-                `if (!${comparison})
-                  throw "Unexpected value: " + JSON.stringify(interestGroup["${fieldName}"]);`
-          });
+        createBiddingScriptURL(
+            { origin: origin,
+              generateBid:
+                  `// Delete deprecated "renderUrl" fields from ads and adComponents, if
+                  // present.
+                  for (let field in interestGroup) {
+                    if (field === "ads" || field === "adComponents") {
+                      for (let i = 0; i < interestGroup[field].length; ++i) {
+                        let ad = interestGroup[field][i];
+                        delete ad.renderUrl;
+                      }
+                    }
+                  }
+                  if (!${comparison})
+                    throw "Unexpected value: " + JSON.stringify(interestGroup["${fieldName}"]);`
+            });
     if (origin !== location.origin) {
       await joinCrossOriginInterestGroup(test, uuid, origin, interestGroupOverrides);
     } else {
@@ -76,14 +122,14 @@ makeTest({
   name: 'InterestGroup.owner with non-normalized origin.',
   fieldName: 'owner',
   fieldValue: OTHER_ORIGIN1,
-  interestGroupOverrides: {seller: ` ${OTHER_ORIGIN1.toUpperCase()} `}
+  interestGroupOverrides: {owner: ` ${OTHER_ORIGIN1.toUpperCase()} `}
 });
 
 makeTest({
   name: 'InterestGroup.owner is URL.',
   fieldName: 'owner',
   fieldValue: OTHER_ORIGIN1,
-  interestGroupOverrides: {seller: OTHER_ORIGIN1 + "/Foopy"}
+  interestGroupOverrides: {owner: OTHER_ORIGIN1 + '/Foopy'}
 });
 
 makeTest({
@@ -98,6 +144,61 @@ makeTest({
   fieldValue: '\u2665'
 });
 
+makeTest({
+  name: 'InterestGroup.name with empty name.',
+  fieldName: 'name',
+  fieldValue: ''
+});
+
+makeTest({
+  name: 'InterestGroup.name with unpaired surrogate characters, which should be replaced with "\\uFFFD".',
+  fieldName: 'name',
+  fieldValue: '\uFFFD,\uFFFD',
+  interestGroupOverrides: {name: '\uD800,\uDBF0'}
+});
+
+// Since "biddingLogicURL" contains the script itself inline, can't include the entire URL
+// in the script for an equality check. Instead, replace the "generateBid" query parameter
+// in the URL with an empty value before comparing it. This doesn't just delete the entire
+// query parameter to make sure that's correctly passed in.
+subsetTest(promise_test,async test => {
+  const uuid = generateUuid(test);
+
+  let biddingScriptBaseURL = createBiddingScriptURL({origin: OTHER_ORIGIN1, generateBid: ''});
+  let biddingLogicURL = createBiddingScriptURL(
+      { origin: OTHER_ORIGIN1,
+        generateBid:
+          `let biddingScriptBaseURL =
+            interestGroup.biddingLogicURL.replace(/generateBid=[^&]*/, "generateBid=");
+          if (biddingScriptBaseURL !== "${biddingScriptBaseURL}")
+            throw "Wrong bidding script URL: " + interestGroup.biddingLogicURL`
+      });
+
+  await joinCrossOriginInterestGroup(test, uuid, OTHER_ORIGIN1,
+                                     { biddingLogicURL: biddingLogicURL });
+
+  await runBasicFledgeTestExpectingWinner(test, uuid, {interestGroupBuyers: [OTHER_ORIGIN1]});
+}, 'InterestGroup.biddingLogicURL.');
+
+// Much like above test, but use a relative URL that points to bidding script.
+subsetTest(promise_test,async test => {
+  const uuid = generateUuid(test);
+
+  let biddingScriptBaseURL = createBiddingScriptURL({generateBid: ''});
+  let biddingLogicURL = createBiddingScriptURL(
+      { generateBid:
+          `let biddingScriptBaseURL =
+            interestGroup.biddingLogicURL.replace(/generateBid=[^&]*/, "generateBid=");
+          if (biddingScriptBaseURL !== "${biddingScriptBaseURL}")
+            throw "Wrong bidding script URL: " + interestGroup.biddingLogicURL`
+      });
+  biddingLogicURL = biddingLogicURL.replace(BASE_URL, 'foo/../');
+
+  await joinInterestGroup(test, uuid, { biddingLogicURL: biddingLogicURL });
+
+  await runBasicFledgeTestExpectingWinner(test, uuid);
+}, 'InterestGroup.biddingLogicURL with relative URL.');
+
 makeTest({
   name: 'InterestGroup.lifetimeMs should not be passed in.',
   fieldName: 'lifetimeMs',
@@ -130,6 +231,15 @@ makeTest({
   fieldValue: { 'a': -1, 'b': 2 }
 });
 
+// TODO: This is currently using USVString internally, so doesn't allow unpaired
+// surrogates, but the spec says it should.
+makeTest({
+  name: 'InterestGroup.priorityVector with unpaired surrogate character.',
+  fieldName: 'priorityVector',
+  fieldValue: { '\uFFFD': -1 },
+  interestGroupOverrides: { prioritySignalsOverrides: { '\uD800': -1 } }
+});
+
 makeTest({
   name: 'InterestGroup.prioritySignalsOverrides should not be passed in, since it can be changed by auctions.',
   fieldName: 'prioritySignalsOverrides',
@@ -137,7 +247,6 @@ makeTest({
   interestGroupOverrides: { prioritySignalsOverrides: { 'a': 1, 'b': 2 } }
 });
 
-// TODO(mmenke): These next 4 violate spec. Fix the code, and update the tests.
 makeTest({
   name: 'InterestGroup.enableBiddingSignalsPrioritization not set.',
   fieldName: 'enableBiddingSignalsPrioritization',
@@ -166,6 +275,92 @@ makeTest({
   fieldValue: true
 });
 
+makeTest({
+  name: 'InterestGroup.biddingWasmHelperURL not set.',
+  fieldName: 'biddingWasmHelperURL',
+  fieldValue: undefined
+});
+
+makeTest({
+  name: 'InterestGroup.biddingWasmHelperURL.',
+  fieldName: 'biddingWasmHelperURL',
+  fieldValue: `${OTHER_ORIGIN1}${RESOURCE_PATH}wasm-helper.py`,
+  interestGroupOverrides: {owner: OTHER_ORIGIN1}
+});
+
+makeTest({
+  name: 'InterestGroup.biddingWasmHelperURL with non-normalized value.',
+  fieldName: 'biddingWasmHelperURL',
+  fieldValue: `${OTHER_ORIGIN1}${RESOURCE_PATH}wasm-helper.py`,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    biddingWasmHelperURL:
+        `${OTHER_ORIGIN1.toUpperCase()}${RESOURCE_PATH}wasm-helper.py`
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.biddingWasmHelperURL with relative URL.',
+  fieldName: 'biddingWasmHelperURL',
+  fieldValue: `${OTHER_ORIGIN1}${RESOURCE_PATH}wasm-helper.py`,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    biddingWasmHelperURL: 'foo/../resources/wasm-helper.py'
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.biddingWasmHelperURL with unpaired surrogate characters, which should be replaced with "\\uFFFD".',
+  fieldName: 'biddingWasmHelperURL',
+  fieldValue: (new URL(`${OTHER_ORIGIN1}${RESOURCE_PATH}wasm-helper.py?\uFFFD.\uFFFD`)).href,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    biddingWasmHelperURL: `${OTHER_ORIGIN1}${RESOURCE_PATH}wasm-helper.py?\uD800.\uDBF0`
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.updateURL not set.',
+  fieldName: 'updateURL',
+  fieldValue: undefined
+});
+
+makeTest({
+  name: 'InterestGroup.updateURL.',
+  fieldName: 'updateURL',
+  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}This-File-Does-Not-Exist.json`,
+  interestGroupOverrides: {owner: OTHER_ORIGIN1}
+});
+
+makeTest({
+  name: 'InterestGroup.updateURL with non-normalized value.',
+  fieldName: 'updateURL',
+  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}This-File-Does-Not-Exist.json`,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    updateURL: `${OTHER_ORIGIN1.toUpperCase()}${BASE_PATH}This-File-Does-Not-Exist.json`
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.updateURL with relative URL.',
+  fieldName: 'updateURL',
+  fieldValue: (new URL(`${OTHER_ORIGIN1}${BASE_PATH}../This-File-Does-Not-Exist.json`)).href,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    updateURL: '../This-File-Does-Not-Exist.json'
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.updateURL with unpaired surrogate characters, which should be replaced with "\\uFFFD".',
+  fieldName: 'updateURL',
+  fieldValue: (new URL(`${BASE_URL}\uFFFD.\uFFFD`)).href,
+  interestGroupOverrides: {
+    updateURL: `${BASE_URL}\uD800.\uDBF0`
+  }
+});
+
 makeTest({
   name: 'InterestGroup.executionMode not present.',
   fieldName: 'executionMode',
@@ -207,18 +402,37 @@ makeTest({
 makeTest({
   name: 'InterestGroup.trustedBiddingSignalsURL.',
   fieldName: 'trustedBiddingSignalsURL',
-  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}this-file-does-not-exist.json`,
+  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}This-File-Does-Not-Exist.json`,
   interestGroupOverrides: {owner: OTHER_ORIGIN1}
 });
 
 makeTest({
   name: 'InterestGroup.trustedBiddingSignalsURL with non-normalized value.',
   fieldName: 'trustedBiddingSignalsURL',
-  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}this-file-does-not-exist.json`,
+  fieldValue: `${OTHER_ORIGIN1}${BASE_PATH}This-File-Does-Not-Exist.json`,
   interestGroupOverrides: {
     owner: OTHER_ORIGIN1,
-    trustedScoringSignalsURL:
-        `${OTHER_ORIGIN1.toUpperCase()}${BASE_PATH}this-file-does-not-exist.json`
+    trustedBiddingSignalsURL:
+        `${OTHER_ORIGIN1.toUpperCase()}${BASE_PATH}This-File-Does-Not-Exist.json`
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.trustedBiddingSignalsURL with relative URL.',
+  fieldName: 'trustedBiddingSignalsURL',
+  fieldValue: (new URL(`${OTHER_ORIGIN1}${BASE_PATH}../This-File-Does-Not-Exist.json`)).href,
+  interestGroupOverrides: {
+    owner: OTHER_ORIGIN1,
+    trustedBiddingSignalsURL: '../This-File-Does-Not-Exist.json'
+  }
+});
+
+makeTest({
+  name: 'InterestGroup.trustedBiddingSignalsURL with unpaired surrogate characters, which should be replaced with "\\uFFFD".',
+  fieldName: 'trustedBiddingSignalsURL',
+  fieldValue: (new URL(`${BASE_URL}\uFFFD.\uFFFD`)).href,
+  interestGroupOverrides: {
+    trustedBiddingSignalsURL: `${BASE_URL}\uD800.\uDBF0`
   }
 });
 
@@ -241,6 +455,13 @@ makeTest({
   interestGroupOverrides: { trustedBiddingSignalsKeys: [1, 0x2, '3'] }
 });
 
+makeTest({
+  name: 'InterestGroup.trustedBiddingSignalsKeys unpaired surrogate characters, which should be replaced with "\\uFFFD".',
+  fieldName: 'trustedBiddingSignalsKeys',
+  fieldValue: ['\uFFFD', '\uFFFD', '\uFFFD.\uFFFD'],
+  interestGroupOverrides: { trustedBiddingSignalsKeys: ['\uD800', '\uDBF0', '\uD800.\uDBF0'] }
+});
+
 makeTest({
   name: 'InterestGroup.trustedBiddingSignalsSlotSizeMode empty.',
   fieldName: 'trustedBiddingSignalsSlotSizeMode',
@@ -297,9 +518,220 @@ makeTest({
   fieldValue: {a:1, b:32.5, c:['d', 'e']}
 });
 
+makeTest({
+  name: 'InterestGroup.userBiddingSignals unpaired surrogate characters, which should be kept as-is.',
+  fieldName: 'userBiddingSignals',
+  fieldValue: '\uD800.\uDBF0'
+});
+
+makeTest({
+  name: 'InterestGroup.userBiddingSignals unpaired surrogate characters in an object, which should be kept as-is.',
+  fieldName: 'userBiddingSignals',
+  fieldValue: {'\uD800': '\uDBF0', '\uDBF0':['\uD800']}
+});
+
 makeTest({
   name: 'InterestGroup.nonStandardField.',
   fieldName: 'nonStandardField',
   fieldValue: undefined,
   interestGroupOverrides: {nonStandardField: 'This value should not be passed to worklets'}
 });
+
+// Note that all ad tests have a deprecated "renderUrl" field passed to generateBid.
+
+// Ad URLs need the right UUID for seller scripts to accept their bids. Since UUID changes
+// for each test, and is not available outside makeTest(), have to use string that will
+// be replaced with the real UUID.
+const AD1_URL = createRenderURL('REPLACE_WITH_UUID', /*script=*/';');
+const AD2_URL = createRenderURL('REPLACE_WITH_UUID', /*script=*/';;');
+
+makeTest({
+  name: 'InterestGroup.ads with one ad.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}]
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with metadata object.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL, metadata: {foo: 1, bar: [2, 3], baz: '4'}}]
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with metadata string.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL, metadata: 'foo'}]
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with null metadata.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL, metadata: null}]
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with adRenderId. This field should not be passed to generateBid.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL, adRenderId: 'twelve chars'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with buyerAndSellerReportingId. This field should not be passed to generateBid.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL,
+                                  buyerAndSellerReportingId: 'Arbitrary text'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with buyerReportingId. This field should not be passed to generateBid.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL,
+                                  buyerReportingId: 'Arbitrary text'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.ads one ad with novel field. This field should not be passed to generateBid.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL, novelField: 'Foo'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.ads with multiple ads.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL, metadata: 1},
+               {renderURL: AD2_URL, metadata: [2]}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL, metadata: 1},
+                                 {renderURL: AD2_URL, metadata: [2]}]}
+});
+
+// This should probably be an error. This WPT test serves to encourage there to be a
+// new join-leave WPT test when that is fixed.
+makeTest({
+  name: 'InterestGroup.ads duplicate ad.',
+  fieldName: 'ads',
+  fieldValue: [{renderURL: AD1_URL}, {renderURL: AD1_URL}],
+  interestGroupOverrides: {ads: [{renderURL: AD1_URL}, {renderURL: AD1_URL}]}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents is undefined.',
+  fieldName: 'adComponents',
+  fieldValue: undefined
+});
+
+// This one is likely a bug.
+makeTest({
+  name: 'InterestGroup.adComponents is empty array.',
+  fieldName: 'adComponents',
+  fieldValue: undefined,
+  interestGroupOverrides: {adComponents: []}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents with one ad.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}]
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with metadata object.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL, metadata: {foo: 1, bar: [2, 3], baz: '4'}}]
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with metadata string.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL, metadata: 'foo'}]
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with null metadata.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL, metadata: null}]
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with adRenderId. This field should not be passed to generateBid.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {adComponents: [{renderURL: AD1_URL,
+                                           adRenderId: 'twelve chars'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with buyerAndSellerReportingId. This field should not be passed to generateBid.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {adComponents: [{renderURL: AD1_URL,
+                                           buyerAndSellerReportingId: 'Arbitrary text'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with buyerReportingId. This field should not be passed to generateBid.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {adComponents: [{renderURL: AD1_URL,
+                                           buyerReportingId: 'Arbitrary text'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents one ad with novel field. This field should not be passed to generateBid.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}],
+  interestGroupOverrides: {adComponents: [{renderURL: AD1_URL,
+                                           novelField: 'Foo'}]}
+});
+
+makeTest({
+  name: 'InterestGroup.adComponents with multiple ads.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL, metadata: 1}, {renderURL: AD2_URL, metadata: [2]}]
+});
+
+makeTest({
+  name: 'InterestGroup.auctionServerRequestFlags is undefined',
+  fieldName: 'auctionServerRequestFlags',
+  fieldValue: undefined
+});
+
+makeTest({
+  name: 'InterestGroup.auctionServerRequestFlags is "omit-ads".',
+  fieldName: 'auctionServerRequestFlags',
+  fieldValue: undefined,
+  interestGroupOverrides: {auctionServerRequestFlags: ['omit-ads']}
+});
+
+makeTest({
+  name: 'InterestGroup.auctionServerRequestFlags is "include-full-ads".',
+  fieldName: 'auctionServerRequestFlags',
+  fieldValue: undefined,
+  interestGroupOverrides: {auctionServerRequestFlags: ['include-full-ads']}
+});
+
+makeTest({
+  name: 'InterestGroup.auctionServerRequestFlags has multiple values.',
+  fieldName: 'auctionServerRequestFlags',
+  fieldValue: undefined,
+  interestGroupOverrides: {auctionServerRequestFlags: ['omit-ads', 'include-full-ads']}
+});
+
+makeTest({
+  name: 'InterestGroup.auctionServerRequestFlags.',
+  fieldName: 'auctionServerRequestFlags',
+  fieldValue: undefined,
+  interestGroupOverrides: {auctionServerRequestFlags: ['noval value']}
+});
+
+// This should probably be an error. This WPT test serves to encourage there to be a
+// new join-leave WPT test when that is fixed.
+makeTest({
+  name: 'InterestGroup.adComponents duplicate ad.',
+  fieldName: 'adComponents',
+  fieldValue: [{renderURL: AD1_URL}, {renderURL: AD1_URL}],
+  interestGroupOverrides: {adComponents: [{renderURL: AD1_URL}, {renderURL: AD1_URL}]}
+});
diff --git a/tests/wpt/tests/fledge/tentative/join-leave-ad-interest-group.https.window.js b/tests/wpt/tests/fledge/tentative/join-leave-ad-interest-group.https.window.js
index c3c97d60c61..b5dfe025bf2 100644
--- a/tests/wpt/tests/fledge/tentative/join-leave-ad-interest-group.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/join-leave-ad-interest-group.https.window.js
@@ -382,30 +382,18 @@ const SIMPLE_JOIN_LEAVE_TEST_CASES = [
     interestGroup: { ...BASE_INTEREST_GROUP,
                      ads: [{metadata: [{a:'b'}, 'c'], 1:[2,3]}] }
   },
+  { expectJoinSucces: false,
+    expectLeaveSucces: true,
+    interestGroup: { ...BASE_INTEREST_GROUP,
+                     ads: [{renderURL: 'https://somewhere.test/',
+                            adRenderId: 'thirteenChars' }] }
+  },
+
   { expectJoinSucces: true,
     expectLeaveSucces: true,
     interestGroup: { ...BASE_INTEREST_GROUP,
                      ads: [{renderURL: 'https://somewhere.test/'}] }
   },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     ads: [{renderURL: 'https://somewhere.test/'},
-                           {renderURL: 'https://somewhere-else.test/'}] }
-  },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     ads: [{renderURL: 'https://somewhere.test/',
-                            metadata: null}] }
-  },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     ads: [{renderURL: 'https://somewhere.test/',
-                            metadata: null,
-                            someOtherField: 'foo'}] }
-  },
 
   // "adComponents" tests
   { expectJoinSucces: false,
@@ -418,16 +406,6 @@ const SIMPLE_JOIN_LEAVE_TEST_CASES = [
     interestGroup: { ...BASE_INTEREST_GROUP,
                      adComponents: 5 }
   },
-  { expectJoinSucces: false,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     adComponents: {} }
-  },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     adComponents: [] }
-  },
   { expectJoinSucces: false,
     expectLeaveSucces: true,
     interestGroup: { ...BASE_INTEREST_GROUP,
@@ -438,30 +416,17 @@ const SIMPLE_JOIN_LEAVE_TEST_CASES = [
     interestGroup: { ...BASE_INTEREST_GROUP,
                      adComponents: [{metadata: [{a:'b'}, 'c'], 1:[2,3]}] }
   },
+  { expectJoinSucces: false,
+    expectLeaveSucces: true,
+    interestGroup: { ...BASE_INTEREST_GROUP,
+                     adComponents: [{renderURL: 'https://somewhere.test/',
+                                     adRenderId: 'More than twelve characters'}] }
+  },
   { expectJoinSucces: true,
     expectLeaveSucces: true,
     interestGroup: { ...BASE_INTEREST_GROUP,
                      adComponents: [{renderURL: 'https://somewhere.test/'}] }
   },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     adComponents: [{renderURL: 'https://somewhere.test/'},
-                                    {renderURL: 'https://elsewhere.test/'}] }
-  },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     adComponents: [{renderURL: 'https://somewhere.test/',
-                                     metadata: null}] }
-  },
-  { expectJoinSucces: true,
-    expectLeaveSucces: true,
-    interestGroup: { ...BASE_INTEREST_GROUP,
-                     adComponents: [{renderURL: 'https://somewhere.test/',
-                                     metadata: null,
-                                     someOtherField: 'foo'}] }
-  },
 
   // Miscellaneous tests.
   { expectJoinSucces: true,
@@ -481,14 +446,14 @@ const SIMPLE_JOIN_LEAVE_TEST_CASES = [
   { expectJoinSucces: true,
     expectLeaveSucces: true,
     interestGroup: { ...BASE_INTEREST_GROUP,
-      name: 'a'.repeat(1048520)
+      name: 'a'.repeat(1048516)
     },
     testCaseName: "Largest possible interest group dictionary",
   },
   { expectJoinSucces: false,
     expectLeaveSucces: true,
     interestGroup: { ...BASE_INTEREST_GROUP,
-      name: 'a'.repeat(1048521)
+      name: 'a'.repeat(1048517)
     },
     testCaseName: "Oversized interest group dictionary",
   },
diff --git a/tests/wpt/tests/fledge/tentative/no-winner.https.window.js b/tests/wpt/tests/fledge/tentative/no-winner.https.window.js
index f252aece5bf..6e02139c810 100644
--- a/tests/wpt/tests/fledge/tentative/no-winner.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/no-winner.https.window.js
@@ -10,7 +10,9 @@
 // META: variant=?21-25
 // META: variant=?26-30
 // META: variant=?31-35
-// META: variant=?36-last
+// META: variant=?36-40
+// META: variant=?41-45
+// META: variant=?46-last
 
 "use strict;"
 
@@ -18,10 +20,10 @@
 // origin, one frame) which have no winning bid, either due to errors or due to
 // there being no bids, except where tests fit better with another set of tests.
 
-// Errors common to bidding and decision logic scripts. These atrings will be
-// appended to script URLs to make the python scripts that generate bidding
-// logic and decision logic scripts with errors.
-const COMMON_SCRIPT_ERRORS = [
+// Errors common to Protected Audiences network requests. These strings will be
+// appended to URLs to make the Python scripts that generate responses respond
+// with errors.
+const COMMON_NETWORK_ERRORS = [
   'error=close-connection',
   'error=http-error',
   'error=no-content-type',
@@ -33,7 +35,7 @@ const COMMON_SCRIPT_ERRORS = [
 ];
 
 const BIDDING_LOGIC_SCRIPT_ERRORS = [
-  ...COMMON_SCRIPT_ERRORS,
+  ...COMMON_NETWORK_ERRORS,
   'error=no-generateBid',
   'generateBid=throw 1;',
   'generateBid=This does not compile',
@@ -48,11 +50,11 @@ const BIDDING_LOGIC_SCRIPT_ERRORS = [
   'generateBid=return {render: interestGroup.ads[0].renderURL};',
   // These are not bidding rather than errors.
   'generateBid=return {bid:0, render: interestGroup.ads[0].renderURL};',
-  'generateBid=return {bid:-1, render: interestGroup.ads[0].renderURL};',
+  'generateBid=return {bid:-1, render: interestGroup.ads[0].renderURL};'
 ];
 
 const DECISION_LOGIC_SCRIPT_ERRORS = [
-  ...COMMON_SCRIPT_ERRORS,
+  ...COMMON_NETWORK_ERRORS,
   'error=no-scoreAd',
   'scoreAd=throw 1;',
   'scoreAd=This does not compile',
@@ -65,7 +67,12 @@ const DECISION_LOGIC_SCRIPT_ERRORS = [
   'scoreAd=return 0;',
   'scoreAd=return -1;',
   'scoreAd=return {desirability: 0};',
-  'scoreAd=return {desirability: -1};',
+  'scoreAd=return {desirability: -1};'
+];
+
+const BIDDING_WASM_HELPER_ERRORS = [
+  ...COMMON_NETWORK_ERRORS,
+  'error=not-wasm'
 ];
 
 for (error of BIDDING_LOGIC_SCRIPT_ERRORS) {
@@ -87,3 +94,13 @@ for (error of DECISION_LOGIC_SCRIPT_ERRORS) {
     );
   }).bind(undefined, error), `Decision logic script: ${error}`);
 }
+
+for (error of BIDDING_WASM_HELPER_ERRORS) {
+  subsetTest(promise_test, (async (error, test) => {
+    let biddingWasmHelperURL =
+        `${BASE_URL}resources/wasm-helper.py?${error}`;
+    await joinGroupAndRunBasicFledgeTestExpectingNoWinner(
+      test, { interestGroupOverrides: { biddingWasmHelperURL: biddingWasmHelperURL } }
+    );
+  }).bind(undefined, error), `Bidding WASM helper: ${error}`);
+}
diff --git a/tests/wpt/tests/fledge/tentative/resources/fledge-util.sub.js b/tests/wpt/tests/fledge/tentative/resources/fledge-util.sub.js
index e9513ecb855..69573d49983 100644
--- a/tests/wpt/tests/fledge/tentative/resources/fledge-util.sub.js
+++ b/tests/wpt/tests/fledge/tentative/resources/fledge-util.sub.js
@@ -157,17 +157,19 @@ async function waitForObservedRequests(uuid, expectedRequests) {
 function createBiddingScriptURL(params = {}) {
   let origin = params.origin ? params.origin : new URL(BASE_URL).origin;
   let url = new URL(`${origin}${RESOURCE_PATH}bidding-logic.sub.py`);
-  if (params.generateBid)
+  // These checks use "==" to ignore null and not provided arguments, while
+  // treating '' as a valid argument.
+  if (params.generateBid != null)
     url.searchParams.append('generateBid', params.generateBid);
-  if (params.reportWin)
+  if (params.reportWin != null)
     url.searchParams.append('reportWin', params.reportWin);
-  if (params.error)
+  if (params.error != null)
     url.searchParams.append('error', params.error);
-  if (params.bid)
+  if (params.bid != null)
     url.searchParams.append('bid', params.bid);
-  if (params.bidCurrency)
+  if (params.bidCurrency != null)
     url.searchParams.append('bidCurrency', params.bidCurrency);
-  if (params.allowComponentAuction !== undefined)
+  if (params.allowComponentAuction != null)
     url.searchParams.append('allowComponentAuction', JSON.stringify(params.allowComponentAuction))
   return url.toString();
 }
@@ -189,11 +191,13 @@ function createDecisionScriptURL(uuid, params = {}) {
   let origin = params.origin ? params.origin : new URL(BASE_URL).origin;
   let url = new URL(`${origin}${RESOURCE_PATH}decision-logic.sub.py`);
   url.searchParams.append('uuid', uuid);
-  if (params.scoreAd)
+  // These checks use "==" to ignore null and not provided arguments, while
+  // treating '' as a valid argument.
+  if (params.scoreAd != null)
     url.searchParams.append('scoreAd', params.scoreAd);
-  if (params.reportResult)
+  if (params.reportResult != null)
     url.searchParams.append('reportResult', params.reportResult);
-  if (params.error)
+  if (params.error != null)
     url.searchParams.append('error', params.error);
   return url.toString();
 }
@@ -204,12 +208,14 @@ function createDecisionScriptURL(uuid, params = {}) {
 // be last.  "signalsParams" also has no effect, but is used by
 // trusted-scoring-signals.py to affect the response.
 function createRenderURL(uuid, script, signalsParams, origin) {
+  // These checks use "==" to ignore null and not provided arguments, while
+  // treating '' as a valid argument.
   if (origin == null)
     origin = new URL(BASE_URL).origin;
   let url = new URL(`${origin}${RESOURCE_PATH}fenced-frame.sub.py`);
-  if (script)
+  if (script != null)
     url.searchParams.append('script', script);
-  if (signalsParams)
+  if (signalsParams != null)
     url.searchParams.append('signalsParams', signalsParams);
   url.searchParams.append('uuid', uuid);
   return url.toString();
diff --git a/tests/wpt/tests/fledge/tentative/resources/incrementer.wasm b/tests/wpt/tests/fledge/tentative/resources/incrementer.wasm
new file mode 100644
index 00000000000..47afcdef2a2
Binary files /dev/null and b/tests/wpt/tests/fledge/tentative/resources/incrementer.wasm differ
diff --git a/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html b/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html
index e696ac0983d..f5b1ef99595 100644
--- a/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html
+++ b/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html
@@ -1,4 +1,5 @@
-<!DOCTYPE html>
+<!doctype html>
+<meta charset="utf-8">
 <html>
 <head>
 <!--- Allow injected scripts to use functions in fledge-util.sub.js --->
diff --git a/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html.headers b/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html.headers
new file mode 100644
index 00000000000..3e3bda1ec06
--- /dev/null
+++ b/tests/wpt/tests/fledge/tentative/resources/subordinate-frame.sub.html.headers
@@ -0,0 +1 @@
+Content-Type: text/html; charset=UTF-8
\ No newline at end of file
diff --git a/tests/wpt/tests/fledge/tentative/resources/wasm-helper.py b/tests/wpt/tests/fledge/tentative/resources/wasm-helper.py
new file mode 100644
index 00000000000..a945b4cd5fe
--- /dev/null
+++ b/tests/wpt/tests/fledge/tentative/resources/wasm-helper.py
@@ -0,0 +1,38 @@
+from pathlib import Path
+
+# Returns incrementer.wasm, with appropriate headers. Depending on query
+# parameter, it can simulate a variety of network errors.
+def main(request, response):
+    error = request.GET.first(b"error", None)
+
+    if error == b"close-connection":
+        # Close connection without writing anything, to simulate a network
+        # error. The write call is needed to avoid writing the default headers.
+        response.writer.write("")
+        response.close_connection = True
+        return
+
+    if error == b"http-error":
+        response.status = (404, b"OK")
+    else:
+        response.status = (200, b"OK")
+
+    if error == b"wrong-content-type":
+        response.headers.set(b"Content-Type", b"application/javascript")
+    elif error != b"no-content-type":
+        response.headers.set(b"Content-Type", b"application/wasm")
+
+    if error == b"bad-allow-fledge":
+        response.headers.set(b"Ad-Auction-Allowed", b"sometimes")
+    elif error == b"fledge-not-allowed":
+        response.headers.set(b"Ad-Auction-Allowed", b"false")
+    elif error != b"no-allow-fledge":
+        response.headers.set(b"Ad-Auction-Allowed", b"true")
+
+    if error == b"no-body":
+        return b""
+
+    if error == b"not-wasm":
+        return b"This is not wasm"
+
+    return (Path(__file__).parent.resolve() / "incrementer.wasm").read_bytes()
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc-expected.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc-expected.html
new file mode 100644
index 00000000000..7c0faba5859
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.arc</title>
+<h1>2d.path.stroke.prune.closePath.arc</h1>
+<p class="desc">Test if zero-lengthed closePath before and after arc are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.arc(20, 20, 15, 0, Math.PI);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc.html
new file mode 100644
index 00000000000..4b1d0692758
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.arc.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.arc-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.arc</title>
+<h1>2d.path.stroke.prune.closePath.arc</h1>
+<p class="desc">Test if zero-lengthed closePath before and after arc are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.arc(20, 20, 15, 0, Math.PI);
+  ctx.closePath();
+
+  ctx.moveTo(40, 40);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html
new file mode 100644
index 00000000000..4b867f821fa
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.bezierCurve</title>
+<h1>2d.path.stroke.prune.closePath.bezierCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after bezier curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html
new file mode 100644
index 00000000000..2c974bd2740
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.bezierCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.bezierCurve</title>
+<h1>2d.path.stroke.prune.closePath.bezierCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after bezier curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(5, 5);
+  ctx.lineTo(5, 5);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+  ctx.closePath();
+
+  ctx.moveTo(20, 40);
+  ctx.lineTo(20, 40);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line-expected.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line-expected.html
new file mode 100644
index 00000000000..87a99c79380
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.line</title>
+<h1>2d.path.stroke.prune.closePath.line</h1>
+<p class="desc">Test if zero-lengthed closePath before and after line are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line.html
new file mode 100644
index 00000000000..655b2e12fda
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.line.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.line-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.line</title>
+<h1>2d.path.stroke.prune.closePath.line</h1>
+<p class="desc">Test if zero-lengthed closePath before and after line are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+
+  ctx.moveTo(45, 45);
+  ctx.lineTo(45, 45);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html
new file mode 100644
index 00000000000..03635b01483
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.quadraticCurve</title>
+<h1>2d.path.stroke.prune.closePath.quadraticCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.quadraticCurveTo(80, 10, 100, 50);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html
new file mode 100644
index 00000000000..9066770e221
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.quadraticCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.quadraticCurve</title>
+<h1>2d.path.stroke.prune.closePath.quadraticCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(5, 5);
+  ctx.lineTo(5, 5);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.quadraticCurveTo(80, 10, 100, 50);
+  ctx.closePath();
+
+  ctx.moveTo(40, 40);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc-expected.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc-expected.html
new file mode 100644
index 00000000000..7c0faba5859
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.arc</title>
+<h1>2d.path.stroke.prune.closePath.arc</h1>
+<p class="desc">Test if zero-lengthed closePath before and after arc are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.arc(20, 20, 15, 0, Math.PI);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html
new file mode 100644
index 00000000000..aeff5bfd400
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.arc-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.arc</title>
+<h1>2d.path.stroke.prune.closePath.arc</h1>
+<p class="desc">Test if zero-lengthed closePath before and after arc are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = new OffscreenCanvas(100, 50);
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.arc(20, 20, 15, 0, Math.PI);
+  ctx.closePath();
+
+  ctx.moveTo(40, 40);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html
new file mode 100644
index 00000000000..f10836239f4
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.arc.w.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<html class="reftest-wait">
+<link rel="match" href="2d.path.stroke.prune.closePath.arc-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.arc</title>
+<h1>2d.path.stroke.prune.closePath.arc</h1>
+<p class="desc">Test if zero-lengthed closePath before and after arc are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script id='myWorker' type='text/worker'>
+  self.onmessage = function(e) {
+    const canvas = new OffscreenCanvas(100, 50);
+    const ctx = canvas.getContext('2d');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.arc(20, 20, 15, 0, Math.PI);
+    ctx.closePath();
+
+    ctx.moveTo(40, 40);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+    ctx.stroke();
+
+    const bitmap = canvas.transferToImageBitmap();
+    self.postMessage(bitmap, bitmap);
+  };
+</script>
+<script>
+  const blob = new Blob([document.getElementById('myWorker').textContent]);
+  const worker = new Worker(URL.createObjectURL(blob));
+  worker.addEventListener('message', msg => {
+    const outputCtx = document.getElementById("canvas").getContext('2d');
+    outputCtx.drawImage(msg.data, 0, 0);
+    document.documentElement.classList.remove("reftest-wait");
+  });
+  worker.postMessage(null);
+</script>
+</html>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html
new file mode 100644
index 00000000000..4b867f821fa
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.bezierCurve</title>
+<h1>2d.path.stroke.prune.closePath.bezierCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after bezier curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html
new file mode 100644
index 00000000000..09d3152a5e7
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.bezierCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.bezierCurve</title>
+<h1>2d.path.stroke.prune.closePath.bezierCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after bezier curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = new OffscreenCanvas(100, 50);
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(5, 5);
+  ctx.lineTo(5, 5);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+  ctx.closePath();
+
+  ctx.moveTo(20, 40);
+  ctx.lineTo(20, 40);
+  ctx.closePath();
+  ctx.stroke();
+
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html
new file mode 100644
index 00000000000..66f15eb3f16
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.bezierCurve.w.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<html class="reftest-wait">
+<link rel="match" href="2d.path.stroke.prune.closePath.bezierCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.bezierCurve</title>
+<h1>2d.path.stroke.prune.closePath.bezierCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after bezier curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script id='myWorker' type='text/worker'>
+  self.onmessage = function(e) {
+    const canvas = new OffscreenCanvas(100, 50);
+    const ctx = canvas.getContext('2d');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(5, 5);
+    ctx.lineTo(5, 5);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+    ctx.closePath();
+
+    ctx.moveTo(20, 40);
+    ctx.lineTo(20, 40);
+    ctx.closePath();
+    ctx.stroke();
+
+    const bitmap = canvas.transferToImageBitmap();
+    self.postMessage(bitmap, bitmap);
+  };
+</script>
+<script>
+  const blob = new Blob([document.getElementById('myWorker').textContent]);
+  const worker = new Worker(URL.createObjectURL(blob));
+  worker.addEventListener('message', msg => {
+    const outputCtx = document.getElementById("canvas").getContext('2d');
+    outputCtx.drawImage(msg.data, 0, 0);
+    document.documentElement.classList.remove("reftest-wait");
+  });
+  worker.postMessage(null);
+</script>
+</html>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line-expected.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line-expected.html
new file mode 100644
index 00000000000..87a99c79380
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.line</title>
+<h1>2d.path.stroke.prune.closePath.line</h1>
+<p class="desc">Test if zero-lengthed closePath before and after line are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html
new file mode 100644
index 00000000000..5a020cce171
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.line-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.line</title>
+<h1>2d.path.stroke.prune.closePath.line</h1>
+<p class="desc">Test if zero-lengthed closePath before and after line are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = new OffscreenCanvas(100, 50);
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(50, 25);
+  ctx.lineTo(50, 25);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+
+  ctx.moveTo(45, 45);
+  ctx.lineTo(45, 45);
+  ctx.closePath();
+  ctx.stroke();
+
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html
new file mode 100644
index 00000000000..860ad7036c9
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.line.w.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<html class="reftest-wait">
+<link rel="match" href="2d.path.stroke.prune.closePath.line-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.line</title>
+<h1>2d.path.stroke.prune.closePath.line</h1>
+<p class="desc">Test if zero-lengthed closePath before and after line are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script id='myWorker' type='text/worker'>
+  self.onmessage = function(e) {
+    const canvas = new OffscreenCanvas(100, 50);
+    const ctx = canvas.getContext('2d');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+
+    ctx.moveTo(45, 45);
+    ctx.lineTo(45, 45);
+    ctx.closePath();
+    ctx.stroke();
+
+    const bitmap = canvas.transferToImageBitmap();
+    self.postMessage(bitmap, bitmap);
+  };
+</script>
+<script>
+  const blob = new Blob([document.getElementById('myWorker').textContent]);
+  const worker = new Worker(URL.createObjectURL(blob));
+  worker.addEventListener('message', msg => {
+    const outputCtx = document.getElementById("canvas").getContext('2d');
+    outputCtx.drawImage(msg.data, 0, 0);
+    document.documentElement.classList.remove("reftest-wait");
+  });
+  worker.postMessage(null);
+</script>
+</html>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html
new file mode 100644
index 00000000000..03635b01483
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve-expected.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.path.stroke.prune.closePath.quadraticCurve</title>
+<h1>2d.path.stroke.prune.closePath.quadraticCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.moveTo(10, 10);
+  ctx.quadraticCurveTo(80, 10, 100, 50);
+  ctx.closePath();
+  ctx.stroke();
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html
new file mode 100644
index 00000000000..1d516710f20
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<link rel="match" href="2d.path.stroke.prune.closePath.quadraticCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.quadraticCurve</title>
+<h1>2d.path.stroke.prune.closePath.quadraticCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script>
+  const canvas = new OffscreenCanvas(100, 50);
+  const ctx = canvas.getContext('2d');
+
+  ctx.fillStyle = '#0f0';
+  ctx.fillRect(0, 0, 100, 50);
+
+  ctx.strokeStyle = '#f00';
+  ctx.lineWidth = 10;
+  ctx.lineCap = 'round';
+  ctx.lineJoin = 'round';
+
+  ctx.beginPath();
+  ctx.moveTo(5, 5);
+  ctx.lineTo(5, 5);
+  ctx.closePath();
+
+  ctx.moveTo(10, 10);
+  ctx.quadraticCurveTo(80, 10, 100, 50);
+  ctx.closePath();
+
+  ctx.moveTo(40, 40);
+  ctx.lineTo(40, 40);
+  ctx.closePath();
+  ctx.stroke();
+
+  const outputCanvas = document.getElementById("canvas");
+  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html
new file mode 100644
index 00000000000..5bbd2732637
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/path-objects/2d.path.stroke.prune.closePath.quadraticCurve.w.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<html class="reftest-wait">
+<link rel="match" href="2d.path.stroke.prune.closePath.quadraticCurve-expected.html">
+<title>Canvas test: 2d.path.stroke.prune.closePath.quadraticCurve</title>
+<h1>2d.path.stroke.prune.closePath.quadraticCurve</h1>
+<p class="desc">Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.</p>
+<canvas id="canvas" width="100" height="50">
+  <p class="fallback">FAIL (fallback content)</p>
+</canvas>
+<script id='myWorker' type='text/worker'>
+  self.onmessage = function(e) {
+    const canvas = new OffscreenCanvas(100, 50);
+    const ctx = canvas.getContext('2d');
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(5, 5);
+    ctx.lineTo(5, 5);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.quadraticCurveTo(80, 10, 100, 50);
+    ctx.closePath();
+
+    ctx.moveTo(40, 40);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+    ctx.stroke();
+
+    const bitmap = canvas.transferToImageBitmap();
+    self.postMessage(bitmap, bitmap);
+  };
+</script>
+<script>
+  const blob = new Blob([document.getElementById('myWorker').textContent]);
+  const worker = new Worker(URL.createObjectURL(blob));
+  worker.addEventListener('message', msg => {
+    const outputCtx = document.getElementById("canvas").getContext('2d');
+    outputCtx.drawImage(msg.data, 0, 0);
+    document.documentElement.classList.remove("reftest-wait");
+  });
+  worker.postMessage(null);
+</script>
+</html>
diff --git a/tests/wpt/tests/html/canvas/tools/yaml-new/path-objects.yaml b/tests/wpt/tests/html/canvas/tools/yaml-new/path-objects.yaml
index 673c9085744..755d6fb8d54 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml-new/path-objects.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml-new/path-objects.yaml
@@ -2879,6 +2879,157 @@
     @assert pixel 50,25 == 0,255,0,255;
   expected: green
 
+- name: 2d.path.stroke.prune.closePath.line
+  desc: Test if zero-lengthed closePath before and after line are ignored corrected.
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+
+    ctx.moveTo(45, 45);
+    ctx.lineTo(45, 45);
+    ctx.closePath();
+    ctx.stroke();
+  reference: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.moveTo(10, 10);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+    ctx.stroke();
+
+- name: 2d.path.stroke.prune.closePath.bezierCurve
+  desc: Test if zero-lengthed closePath before and after bezier curve are ignored corrected.
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(5, 5);
+    ctx.lineTo(5, 5);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+    ctx.closePath();
+
+    ctx.moveTo(20, 40);
+    ctx.lineTo(20, 40);
+    ctx.closePath();
+    ctx.stroke();
+  reference: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.moveTo(10, 10);
+    ctx.bezierCurveTo(10, 30, 40, 50, 100, 50);
+    ctx.closePath();
+    ctx.stroke();
+
+- name: 2d.path.stroke.prune.closePath.quadraticCurve
+  desc: Test if zero-lengthed closePath before and after quadratic curve are ignored corrected.
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(5, 5);
+    ctx.lineTo(5, 5);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.quadraticCurveTo(80, 10, 100, 50);
+    ctx.closePath();
+
+    ctx.moveTo(40, 40);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+    ctx.stroke();
+  reference: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.moveTo(10, 10);
+    ctx.quadraticCurveTo(80, 10, 100, 50);
+    ctx.closePath();
+    ctx.stroke();
+
+- name: 2d.path.stroke.prune.closePath.arc
+  desc: Test if zero-lengthed closePath before and after arc are ignored corrected.
+  code: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.beginPath();
+    ctx.moveTo(50, 25);
+    ctx.lineTo(50, 25);
+    ctx.closePath();
+
+    ctx.moveTo(10, 10);
+    ctx.arc(20, 20, 15, 0, Math.PI);
+    ctx.closePath();
+
+    ctx.moveTo(40, 40);
+    ctx.lineTo(40, 40);
+    ctx.closePath();
+    ctx.stroke();
+  reference: |
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+
+    ctx.strokeStyle = '#f00';
+    ctx.lineWidth = 10;
+    ctx.lineCap = 'round';
+    ctx.lineJoin = 'round';
+
+    ctx.moveTo(10, 10);
+    ctx.arc(20, 20, 15, 0, Math.PI);
+    ctx.closePath();
+    ctx.stroke();
 
 - name: 2d.path.transformation.basic
   code: |
diff --git a/tests/wpt/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js b/tests/wpt/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js
index 7d0dd95d84b..2fe8d02879b 100644
--- a/tests/wpt/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js
+++ b/tests/wpt/tests/html/cross-origin-embedder-policy/credentialless/websocket.https.window.js
@@ -1,4 +1,4 @@
-// META: TIMEOUT=long
+// META: timeout=long
 // META: script=/common/get-host-info.sub.js
 // META: script=/common/utils.js
 // META: script=/common/dispatcher/dispatcher.js
diff --git a/tests/wpt/tests/html/dom/aria-element-reflection.html b/tests/wpt/tests/html/dom/aria-element-reflection.html
index 8d4d4b8f6a6..54b9d34eb17 100644
--- a/tests/wpt/tests/html/dom/aria-element-reflection.html
+++ b/tests/wpt/tests/html/dom/aria-element-reflection.html
@@ -791,6 +791,22 @@
     }, "Caching invariant different elements.");
   </script>
 
+  <div id="badInputValues"></div>
+  <div id="badInputValues2"></div>
+
+  <script>
+    test(function(t) {
+      assert_throws_js(TypeError, () => { badInputValues.ariaActiveDescendantElement = "a string"; });
+      assert_throws_js(TypeError, () => { badInputValues.ariaActiveDescendantElement = 1; });
+      assert_throws_js(TypeError, () => { badInputValues.ariaActiveDescendantElement = [ badInputValues2 ]; });
+
+      assert_throws_js(TypeError, () => { badInputValues.ariaControlsElements = "a string" });
+      assert_throws_js(TypeError, () => { badInputValues.ariaControlsElements = 1 });
+      assert_throws_js(TypeError, () => { badInputValues.ariaControlsElements = [1, 2, 3] });
+      assert_throws_js(TypeError, () => { badInputValues.ariaControlsElements = badInputValues2 });
+    }, "Passing values of the wrong type should throw a TypeError");
+  </script>
+
   <!-- TODO(chrishall): add additional GC test covering:
        if an element is in an invalid scope but attached to the document, it's
        not GC'd;
diff --git a/tests/wpt/tests/html/rendering/non-replaced-elements/form-controls/resets.html b/tests/wpt/tests/html/rendering/non-replaced-elements/form-controls/resets.html
index 20d6a565b46..db21188ee37 100644
--- a/tests/wpt/tests/html/rendering/non-replaced-elements/form-controls/resets.html
+++ b/tests/wpt/tests/html/rendering/non-replaced-elements/form-controls/resets.html
@@ -41,6 +41,10 @@ input[type=submit i], input[type=color i], input[type=search i], select, button
 input, button {
   display: inline-block;
 }
+input:not([type=image i], [type=range i], [type=checkbox i], [type=radio i]) {
+  overflow: clip;
+  overflow-clip-margin: 0;
+}
 /* in spec prose: */ select, textarea, meter, progress {
   display: inline-block;
 }
@@ -106,6 +110,8 @@ table {
                 'text-shadow',
                 'text-align',
                 'display',
+                'overflow',
+                'overflow-clip-margin',
                 'box-sizing'];
  runUAStyleTests(props);
 
diff --git a/tests/wpt/tests/html/rendering/support/test-ua-stylesheet.js b/tests/wpt/tests/html/rendering/support/test-ua-stylesheet.js
index 49757a36828..e23c9a67202 100644
--- a/tests/wpt/tests/html/rendering/support/test-ua-stylesheet.js
+++ b/tests/wpt/tests/html/rendering/support/test-ua-stylesheet.js
@@ -26,6 +26,10 @@ function runUAStyleTests(props) {
       ) {
       continue;
      }
+     if (prop === 'overflow' && testEl.localName === 'select') {
+      // TODO: https://github.com/whatwg/html/issues/10031
+      continue;
+     }
      test(() => {
        assert_equals(testStyle.getPropertyValue(prop), refStyle.getPropertyValue(prop));
      }, `${testNameContext(testEl)} - ${prop}`);
diff --git a/tests/wpt/tests/html/rendering/widgets/input-text-size.html b/tests/wpt/tests/html/rendering/widgets/input-text-size.html
new file mode 100644
index 00000000000..7f2948280c0
--- /dev/null
+++ b/tests/wpt/tests/html/rendering/widgets/input-text-size.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<link rel="help" href="https://html.spec.whatwg.org/C/#the-input-element-as-a-text-entry-widget">
+<title>Test `size` attribute behaivor</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+
+<input id="missing">
+<input id="invalid" size="-1">
+<input id="size0" size="0">
+<input id="size1" size="1">
+<input id="size10" size="10">
+<input id="size20" size="20">
+<input id="size21" size="21">
+<input id="computed" style="border:none; padding:0;" size="19">
+
+<script>
+test(() => {
+  assert_equals(missing.offsetWidth, size20.offsetWidth);
+}, 'A misssing attribute is equivalent to size=20');
+
+test(() => {
+  assert_equals(invalid.offsetWidth, size20.offsetWidth, 'size="-1"');
+  assert_equals(size0.offsetWidth, size20.offsetWidth, 'size="0"');
+}, 'An invalid attribute value is equivalent to size=20');
+
+test(() => {
+  assert_less_than(size1.offsetWidth, size10.offsetWidth, '1 < 10');
+  assert_less_than(size10.offsetWidth, size20.offsetWidth, '10 < 20');
+  assert_less_than(size20.offsetWidth, size21.offsetWidth, '20 < 21');
+}, 'The width depends on a size attribute');
+
+test(() => {
+  const computedString = getComputedStyle(computed).width;
+  assert_equals(computed.offsetWidth,
+      parseInt(computedString.substring(0, computedString.length - 2)));
+}, 'Size attribute value affects computed style');
+</script>
+
diff --git a/tests/wpt/tests/html/rendering/widgets/textarea-cols-rows.html b/tests/wpt/tests/html/rendering/widgets/textarea-cols-rows.html
new file mode 100644
index 00000000000..012c5aa153d
--- /dev/null
+++ b/tests/wpt/tests/html/rendering/widgets/textarea-cols-rows.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<link rel="help" href="https://html.spec.whatwg.org/C/#the-textarea-element-2">
+<title>Test `cols` `rows` attributes behaivor</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+
+<textarea id="missing"></textarea>
+<textarea id="invalid" cols="-1" rows="-1"></textarea>
+<textarea id="computed" style="border:none; padding:0;" cols="19" rows="5"></textarea>
+
+<textarea id="cols0" cols="0"></textarea>
+<textarea id="cols1" cols="1"></textarea>
+<textarea id="cols10" cols="10"></textarea>
+<textarea id="cols20" cols="20"></textarea>
+<textarea id="cols21" cols="21"></textarea>
+
+<textarea id="rows0" rows="0"></textarea>
+<textarea id="rows1" rows="1"></textarea>
+<textarea id="rows2" rows="2"></textarea>
+<textarea id="rows3" rows="3"></textarea>
+
+<script>
+test(() => {
+  assert_equals(missing.offsetWidth, cols20.offsetWidth);
+  assert_equals(missing.offsetHeight, rows2.offsetHeight);
+}, 'A misssing attribute is equivalent to cols=20 rows=2');
+
+test(() => {
+  assert_equals(invalid.offsetWidth, cols20.offsetWidth);
+  assert_equals(invalid.offsetHeight, rows2.offsetHeight);
+  assert_equals(cols0.offsetWidth, cols20.offsetWidth);
+  assert_equals(rows0.offsetHeight, rows2.offsetHeight);
+}, 'An invalid attribute value is equivalent to cols=20 rows=2');
+
+test(() => {
+  assert_less_than(cols1.offsetWidth, cols10.offsetWidth, '1 < 10');
+  assert_less_than(cols10.offsetWidth, cols20.offsetWidth, '10 < 20');
+  assert_less_than(cols20.offsetWidth, cols21.offsetWidth, '20 < 21');
+}, 'The width depends on a cols attribute');
+
+test(() => {
+  assert_less_than(rows1.offsetHeight, rows2.offsetHeight, '1 < 2');
+  assert_less_than(rows2.offsetHeight, rows3.offsetHeight, '2 < 3');
+}, 'The height depends on a rows attribute');
+
+test(() => {
+  const computedWidth = getComputedStyle(computed).width;
+  assert_equals(computed.offsetWidth,
+      parseInt(computedWidth.substring(0, computedWidth.length - 2)));
+
+  const computedHeight = getComputedStyle(computed).height;
+  assert_equals(computed.offsetHeight,
+      parseInt(computedHeight.substring(0, computedHeight.length - 2)));
+}, 'Cols/rows attribute values affect computed style');
+</script>
+
diff --git a/tests/wpt/tests/html/semantics/embedded-content/media-elements/preserves-pitch.html b/tests/wpt/tests/html/semantics/embedded-content/media-elements/preserves-pitch.html
index d0f4d77a32b..ba76f51d471 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/media-elements/preserves-pitch.html
+++ b/tests/wpt/tests/html/semantics/embedded-content/media-elements/preserves-pitch.html
@@ -71,7 +71,7 @@ function testPreservesPitch(preservesPitch, playbackRate, expectedPitch, descrip
         // Wait until we have played some audio. Otherwise, the detector
         // might return a pitch of 0Hz.
         audio.play();
-        await waitUntil(0.25);
+        await waitUntil(0.5);
 
         var pitch = detector.detect();
 
@@ -82,7 +82,10 @@ function testPreservesPitch(preservesPitch, playbackRate, expectedPitch, descrip
         assert_less_than(pitch.margin, 25,
             "Test error: the margin should be reasonably small.")
 
-        assert_approx_equals(pitch.value, expectedPitch, pitch.margin,
+        // Allow for a 15% margin of error in the pitch detector, to reduce test
+        // flakiness. Since our tests speed up and slow down by a factor of 2,
+        // this should be plenty of leeway, without causing false negatives.
+        assert_approx_equals(pitch.value, expectedPitch, expectedPitch*0.15,
             "The actual pitch should be close to the expected pitch.");
 
     }, description);
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.js b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.js
index 7792c261309..413f392dfc6 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.js
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/resources/sandbox-top-navigation-helper.js
@@ -4,8 +4,6 @@
 // // META: script=/common/utils.js
 // // META: script=/resources/testdriver.js
 // // META: script=/resources/testdriver-vendor.js
-// // META: script=/resources/testharness.js
-// // META: script=/resources/testharnessreport.js
 // // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
 // // META: script=./resources/sandbox-top-navigation-helper.js
 
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js
index a9ea9e47232..8681411dd71 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child-special-cases.tentative.sub.window.js
@@ -4,8 +4,6 @@
 // META: script=/common/utils.js
 // META: script=/resources/testdriver.js
 // META: script=/resources/testdriver-vendor.js
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
 // META: script=./resources/sandbox-top-navigation-helper.js
 
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child.tentative.sub.window.js b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child.tentative.sub.window.js
index 58133456970..53faa99a408 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child.tentative.sub.window.js
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-child.tentative.sub.window.js
@@ -4,8 +4,6 @@
 // META: script=/common/utils.js
 // META: script=/resources/testdriver.js
 // META: script=/resources/testdriver-vendor.js
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
 // META: script=./resources/sandbox-top-navigation-helper.js
 
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-escalate-privileges.tentative.sub.window.js b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-escalate-privileges.tentative.sub.window.js
index 999f056f334..a5cda9b0b98 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-escalate-privileges.tentative.sub.window.js
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-escalate-privileges.tentative.sub.window.js
@@ -4,8 +4,6 @@
 // META: script=/common/utils.js
 // META: script=/resources/testdriver.js
 // META: script=/resources/testdriver-vendor.js
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
 // META: script=./resources/sandbox-top-navigation-helper.js
 
diff --git a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-grandchild.tentative.sub.window.js b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-grandchild.tentative.sub.window.js
index 519efc94e51..a07148f8029 100644
--- a/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-grandchild.tentative.sub.window.js
+++ b/tests/wpt/tests/html/semantics/embedded-content/the-iframe-element/sandbox-top-navigation-grandchild.tentative.sub.window.js
@@ -4,8 +4,6 @@
 // META: script=/common/utils.js
 // META: script=/resources/testdriver.js
 // META: script=/resources/testdriver-vendor.js
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
 // META: script=./resources/sandbox-top-navigation-helper.js
 
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/select-parsing.tentative.html b/tests/wpt/tests/html/semantics/forms/the-select-element/select-parsing.tentative.html
new file mode 100644
index 00000000000..d3576a26b7f
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/select-parsing.tentative.html
@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://github.com/whatwg/html/issues/9799">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+
+<select id=s1>
+  <div>div 1</div>
+  <button>button</button>
+  <div>div 2</div>
+  <datalist>
+    <option>option</option>
+  </datalist>
+  <div>div 3</div>
+</select>
+
+<select id=s2>
+  <div>div 1</div>
+  <button>
+    <span>level 1</span>
+    <button>
+      <span>level 2</span>
+    </button>
+  </button>
+  <div>div 2</div>
+</select>
+
+<select id=s3>
+  <button>button
+</select>
+
+<select id=s4>
+  <datalist>datalist
+</select>
+
+<select id=s5>
+  <button>
+    <select></select>
+  </button>
+</select>
+
+<select id=s6>
+  <button>
+    <div>
+      <select>
+</select>
+
+<div id=afterlast>
+  keep this div after the last test case
+</div>
+
+<script>
+test(() => {
+  // The document.body check here and in the other tests is to make sure that a
+  // previous test case didn't leave the HTML parser open on another element.
+  assert_equals(document.getElementById('s1').parentNode, document.body);
+  assert_equals(document.getElementById('s1').innerHTML, `
+  div 1
+  <button>button</button>
+  div 2
+  <datalist>
+    <option>option</option>
+  </datalist>
+  div 3
+`);
+}, '<button>s and <datalist>s should be allowed in <select>.');
+
+test(() => {
+  assert_equals(document.getElementById('s2').parentNode, document.body);
+  assert_equals(document.getElementById('s2').innerHTML, `
+  div 1
+  <button>
+    <span>level 1</span>
+    </button><button>
+      <span>level 2</span>
+    </button>
+  \n  div 2
+`);
+}, 'Nested <button>s in <select> should be flattened out.');
+
+test(() => {
+  assert_equals(document.getElementById('s3').parentNode, document.body);
+  assert_equals(document.getElementById('s3').innerHTML, `
+  <button>button
+</button>`);
+}, '</select> should close <button>.');
+
+test(() => {
+  assert_equals(document.getElementById('s4').parentNode, document.body);
+  assert_equals(document.getElementById('s4').innerHTML, `
+  <datalist>datalist
+</datalist>`);
+}, '</select> should close <datalist>.');
+
+test(() => {
+  assert_equals(document.getElementById('s5').parentNode, document.body);
+  assert_equals(document.getElementById('s5').innerHTML, `
+  <button>
+    </button>`);
+}, '<select> in <button> in <select> should remove inner <select>.');
+
+test(() => {
+  assert_equals(document.getElementById('s6').parentNode, document.body);
+  assert_equals(document.getElementById('s6').innerHTML, `
+  <button>
+    <div>
+      </div></button>`);
+}, '<select> in <select><button><div> should remove inner <select>.');
+
+test(() => {
+  assert_equals(document.getElementById('afterlast').parentNode, document.body);
+}, 'The last test should not leave any tags open after parsing.');
+</script>
diff --git a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html
index 68d3ef0a9ad..9d0e3284fec 100644
--- a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html
+++ b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module-assertions/parse-error.html
@@ -17,5 +17,5 @@ async_test(t => {
 });
 </script>
 <script type="module">
-import v from "./parse-error.json";
+import v from "./parse-error.json" assert { type: "json" };
 </script>
diff --git a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/parse-error.html b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/parse-error.html
index 68d3ef0a9ad..88fb23a00d9 100644
--- a/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/parse-error.html
+++ b/tests/wpt/tests/html/semantics/scripting-1/the-script-element/json-module/parse-error.html
@@ -17,5 +17,5 @@ async_test(t => {
 });
 </script>
 <script type="module">
-import v from "./parse-error.json";
+import v from "./parse-error.json" with { type: "json" };
 </script>
diff --git a/tests/wpt/tests/interfaces/fenced-frame.idl b/tests/wpt/tests/interfaces/fenced-frame.idl
index 0eed6a6b4ba..2107655aa92 100644
--- a/tests/wpt/tests/interfaces/fenced-frame.idl
+++ b/tests/wpt/tests/interfaces/fenced-frame.idl
@@ -52,7 +52,11 @@ dictionary FenceEvent {
   DOMString eventType;
   DOMString eventData;
   sequence<FenceReportingDestination> destination;
+
+  // When setting event data to be used later in an automatic beacon, the
+  // following properties are used:
   boolean once = false;
+  boolean crossOriginExposed = false;
 
   // When reporting to a custom destination URL (with substitution of macros defined by
   // the Protected Audience buyer), the following property is used:
diff --git a/tests/wpt/tests/interfaces/html.idl b/tests/wpt/tests/interfaces/html.idl
index 434d0cc0ab1..9193a7487ee 100644
--- a/tests/wpt/tests/interfaces/html.idl
+++ b/tests/wpt/tests/interfaces/html.idl
@@ -2472,6 +2472,7 @@ interface MessagePort : EventTarget {
   // event handlers
   attribute EventHandler onmessage;
   attribute EventHandler onmessageerror;
+  attribute EventHandler onclose;
 };
 
 dictionary StructuredSerializeOptions {
diff --git a/tests/wpt/tests/interfaces/longtasks.idl b/tests/wpt/tests/interfaces/longtasks.idl
index 71ab2ddc67c..13d4940c1c0 100644
--- a/tests/wpt/tests/interfaces/longtasks.idl
+++ b/tests/wpt/tests/interfaces/longtasks.idl
@@ -46,7 +46,7 @@ interface PerformanceLongAnimationFrameTiming : PerformanceEntry {
     [Default] object toJSON();
 };
 
-enum ScriptTimingType {
+enum ScriptInvokerType {
     "classic-script",
     "module-script",
     "event-listener",
@@ -55,6 +55,10 @@ enum ScriptTimingType {
     "reject-promise"
 };
 
+enum ScriptWindowAttribution {
+    "self", "descendant", "ancestor", "same-page", "other"
+};
+
 [Exposed=Window]
 interface PerformanceScriptTiming : PerformanceEntry {
     /* Overloading PerformanceEntry */
@@ -63,8 +67,13 @@ interface PerformanceScriptTiming : PerformanceEntry {
     readonly attribute DOMString name;
     readonly attribute DOMString entryType;
 
-    readonly attribute ScriptTimingType type;
+    readonly attribute ScriptInvokerType invokerType;
+    readonly attribute DOMString invoker;
     readonly attribute DOMHighResTimeStamp executionStart;
     readonly attribute DOMString sourceLocation;
+    readonly attribute DOMHighResTimeStamp pauseDuration;
+    readonly attribute DOMHighResTimeStamp forcedStyleAndLayoutDuration;
+    readonly attribute Window? window;
+    readonly attribute ScriptWindowAttribution windowAttribution;
     [Default] object toJSON();
 };
diff --git a/tests/wpt/tests/interfaces/paint-timing.idl b/tests/wpt/tests/interfaces/paint-timing.idl
index 052b74ef6c2..396f461e94c 100644
--- a/tests/wpt/tests/interfaces/paint-timing.idl
+++ b/tests/wpt/tests/interfaces/paint-timing.idl
@@ -1,7 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into webref
 // (https://github.com/w3c/webref)
-// Source: Paint Timing 1 (https://w3c.github.io/paint-timing/)
+// Source: Paint Timing (https://w3c.github.io/paint-timing/)
 
 [Exposed=Window]
 interface PerformancePaintTiming : PerformanceEntry {};
diff --git a/tests/wpt/tests/interfaces/trust-token-api.idl b/tests/wpt/tests/interfaces/trust-token-api.idl
index fb7f15b4b74..9b74290da72 100644
--- a/tests/wpt/tests/interfaces/trust-token-api.idl
+++ b/tests/wpt/tests/interfaces/trust-token-api.idl
@@ -29,6 +29,6 @@ partial interface XMLHttpRequest {
 };
 
 partial interface Document {
-  Promise<boolean> hasPrivateTokens(USVString issuer);
+  Promise<boolean> hasPrivateToken(USVString issuer);
   Promise<boolean> hasRedemptionRecord(USVString issuer);
 };
diff --git a/tests/wpt/tests/interfaces/trusted-types.idl b/tests/wpt/tests/interfaces/trusted-types.idl
index 23562381294..6723994aae6 100644
--- a/tests/wpt/tests/interfaces/trusted-types.idl
+++ b/tests/wpt/tests/interfaces/trusted-types.idl
@@ -53,13 +53,13 @@ interface TrustedTypePolicy {
 };
 
 dictionary TrustedTypePolicyOptions {
-   CreateHTMLCallback? createHTML;
-   CreateScriptCallback? createScript;
-   CreateScriptURLCallback? createScriptURL;
+   CreateHTMLCallback createHTML;
+   CreateScriptCallback createScript;
+   CreateScriptURLCallback createScriptURL;
 };
-callback CreateHTMLCallback = DOMString (DOMString input, any... arguments);
-callback CreateScriptCallback = DOMString (DOMString input, any... arguments);
-callback CreateScriptURLCallback = USVString (DOMString input, any... arguments);
+callback CreateHTMLCallback = DOMString? (DOMString input, any... arguments);
+callback CreateScriptCallback = DOMString? (DOMString input, any... arguments);
+callback CreateScriptURLCallback = USVString? (DOMString input, any... arguments);
 
 typedef [StringContext=TrustedHTML] DOMString HTMLString;
 typedef [StringContext=TrustedScript] DOMString ScriptString;
diff --git a/tests/wpt/tests/interfaces/webauthn.idl b/tests/wpt/tests/interfaces/webauthn.idl
index e56d61314af..cf1a2fbdc48 100644
--- a/tests/wpt/tests/interfaces/webauthn.idl
+++ b/tests/wpt/tests/interfaces/webauthn.idl
@@ -58,7 +58,6 @@ dictionary AuthenticatorAssertionResponseJSON {
     required Base64URLString authenticatorData;
     required Base64URLString signature;
     Base64URLString userHandle;
-    Base64URLString attestationObject;
 };
 
 dictionary AuthenticationExtensionsClientOutputsJSON {
@@ -77,9 +76,11 @@ partial interface PublicKeyCredential {
 };
 
 partial interface PublicKeyCredential {
-    static Promise<boolean> isPasskeyPlatformAuthenticatorAvailable();
+    static Promise<PublicKeyCredentialClientCapabilities> getClientCapabilities();
 };
 
+typedef record<DOMString, boolean> PublicKeyCredentialClientCapabilities;
+
 partial interface PublicKeyCredential {
     static PublicKeyCredentialCreationOptions parseCreationOptionsFromJSON(PublicKeyCredentialCreationOptionsJSON options);
 };
@@ -124,8 +125,6 @@ dictionary PublicKeyCredentialRequestOptionsJSON {
     sequence<PublicKeyCredentialDescriptorJSON>             allowCredentials = [];
     DOMString                                               userVerification = "preferred";
     sequence<DOMString>                                     hints = [];
-    DOMString                                               attestation = "none";
-    sequence<DOMString>                                     attestationFormats = [];
     AuthenticationExtensionsClientInputsJSON                extensions;
 };
 
@@ -148,7 +147,6 @@ interface AuthenticatorAssertionResponse : AuthenticatorResponse {
     [SameObject] readonly attribute ArrayBuffer      authenticatorData;
     [SameObject] readonly attribute ArrayBuffer      signature;
     [SameObject] readonly attribute ArrayBuffer?     userHandle;
-    [SameObject] readonly attribute ArrayBuffer?     attestationObject;
 };
 
 dictionary PublicKeyCredentialParameters {
@@ -217,8 +215,6 @@ dictionary PublicKeyCredentialRequestOptions {
     sequence<PublicKeyCredentialDescriptor> allowCredentials = [];
     DOMString                            userVerification = "preferred";
     sequence<DOMString>                  hints = [];
-    DOMString                            attestation = "none";
-    sequence<DOMString>                  attestationFormats = [];
     AuthenticationExtensionsClientInputs extensions;
 };
 
@@ -270,6 +266,14 @@ enum UserVerificationRequirement {
     "discouraged"
 };
 
+enum ClientCapability {
+    "conditionalCreate",
+    "conditionalMediation",
+    "hybridTransport",
+    "passkeyPlatformAuthenticator",
+    "userVerifyingPlatformAuthenticator",
+};
+
 enum PublicKeyCredentialHints {
     "security-key",
     "client-device",
@@ -375,7 +379,7 @@ partial dictionary AuthenticationExtensionsClientInputs {
 };
 
 dictionary AuthenticationExtensionsSupplementalPubKeysOutputs {
-    sequence<ArrayBuffer> signatures;
+    required sequence<ArrayBuffer> signatures;
 };
 
 partial dictionary AuthenticationExtensionsClientOutputs {
diff --git a/tests/wpt/tests/lint.ignore b/tests/wpt/tests/lint.ignore
index c82f8027f69..e9f91d80f0d 100644
--- a/tests/wpt/tests/lint.ignore
+++ b/tests/wpt/tests/lint.ignore
@@ -395,6 +395,7 @@ SET TIMEOUT: scheduler/tentative/current-task-signal-async-abort.any.js
 SET TIMEOUT: scheduler/tentative/current-task-signal-async-priority.any.js
 SET TIMEOUT: speculation-rules/prerender/resources/activation-start.html
 SET TIMEOUT: speculation-rules/prerender/resources/prerender-response-code.html
+SET TIMEOUT: speculation-rules/prerender/resources/prerender-while-prerender-outer.html
 SET TIMEOUT: speculation-rules/prerender/resources/deferred-promise-utils.js
 SET TIMEOUT: speculation-rules/prerender/resources/session-history-harness.js
 SET TIMEOUT: speculation-rules/prerender/resources/utils.js
@@ -520,7 +521,6 @@ SET TIMEOUT: css/CSS2/tables/tables-102.xht
 SET TIMEOUT: css/mediaqueries/min-width-tables-001.html
 SET TIMEOUT: css/css-text/crashtests/rendering-rtl-bidi-override-crash.html
 SET TIMEOUT: css/css-backgrounds/color-mix-currentcolor-border-repaint-parent.html
-SET TIMEOUT: svg/painting/color-mix-currentcolor-fill-stroke-repaint.html
 SET TIMEOUT: svg/painting/currentcolor-fill-stroke-repaint.html
 SET TIMEOUT: resource-timing/resources/run-async-tasks-promise.js
 
diff --git a/tests/wpt/tests/mathml/relations/css-styling/mathvariant-auto-selection.html b/tests/wpt/tests/mathml/relations/css-styling/mathvariant-auto-selection.html
new file mode 100644
index 00000000000..f915c44e497
--- /dev/null
+++ b/tests/wpt/tests/mathml/relations/css-styling/mathvariant-auto-selection.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>text-transform math-auto</title>
+    <link rel="help" href="https://w3c.github.io/mathml-core/#new-text-transform-values">
+    <link rel="help" href="https://w3c.github.io/mathml-core/#italic-mappings">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/css-text/text-transform/math/italic-mapping.js"></script>
+    <meta name="assert" content="Verify Selection.toString() on a single character <mi> within returns the transformed unicode character.">
+  </head>
+  <body>
+    <math><mi id="container"></mi></math>
+    <script>
+      add_completion_callback(() => {
+        container.remove();
+      });
+      for (let code_point in italic_mapping) {
+        test(() => {
+          container.textContent = String.fromCodePoint(code_point);
+          window
+            .getSelection()
+            .setBaseAndExtent(container.firstChild, 0, container.firstChild, 1);
+          assert_equals(
+            window.getSelection().toString(),
+            String.fromCodePoint(italic_mapping[code_point])
+          );
+        }, `Selection.toString() for <mi>${String.fromCodePoint(code_point)}</mi> returns the transformed character.`);
+      }
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/tests/mathml/tools/mathvariant-transforms.py b/tests/wpt/tests/mathml/tools/mathvariant-transforms.py
index e4857d2a3e3..dca85b55618 100755
--- a/tests/wpt/tests/mathml/tools/mathvariant-transforms.py
+++ b/tests/wpt/tests/mathml/tools/mathvariant-transforms.py
@@ -195,6 +195,18 @@ def generateTestFor(mathvariant, mathml):
 generateTestFor(mathvariant="auto", mathml=False)
 generateTestFor(mathvariant="auto", mathml=True)
 
+# Generate italic_mapping.js file used by selection tests.
+print("Generating italic_mapping.js...", end="")
+italic_mapping = open("../../css/css-text/text-transform/math/italic-mapping.js", "w")
+italic_mapping.write("// Generated by mathml/tools/mathvariant.py; DO NOT EDIT.\n");
+italic_mapping.write("let italic_mapping = {\n");
+for baseChar in mathvariantTransforms["italic"]:
+    transformedChar = mathvariantTransforms[mathvariant][baseChar]
+    italic_mapping.write("  0x%0X: 0x%0X,\n" % (baseChar, transformedChar));
+italic_mapping.write("}\n");
+italic_mapping.close()
+print(" done.")
+
 # Other mathvariant tests can be generated by the following command. They are
 # still use internally by browsers implementing full mathvariant support.
 # See https://github.com/w3c/mathml-core/issues/182
diff --git a/tests/wpt/tests/mediacapture-insertable-streams/META.yml b/tests/wpt/tests/mediacapture-insertable-streams/META.yml
new file mode 100644
index 00000000000..0b7ae4d8159
--- /dev/null
+++ b/tests/wpt/tests/mediacapture-insertable-streams/META.yml
@@ -0,0 +1,6 @@
+spec: https://w3c.github.io/mediacapture-transform/
+suggested_reviewers:
+  - alvestrand
+  - guidou
+  - youennf
+  - jan-ivar
diff --git a/tests/wpt/tests/mediacapture-insertable-streams/idlharness.any.js b/tests/wpt/tests/mediacapture-insertable-streams/idlharness.any.js
index d7975ab90fa..594753cc1ab 100644
--- a/tests/wpt/tests/mediacapture-insertable-streams/idlharness.any.js
+++ b/tests/wpt/tests/mediacapture-insertable-streams/idlharness.any.js
@@ -7,6 +7,7 @@ idl_test(
   ['dom', 'html'],
   idl_array => {
     idl_array.add_objects({
+      MediaStreamTrackProcessor: ['new MediaStreamTrackProcessor({ track: new VideoTrackGenerator() })'],
       VideoTrackGenerator: ['new VideoTrackGenerator()'],
     });
   }
diff --git a/tests/wpt/tests/pending-beacon/pending_beacon-basic.window.js b/tests/wpt/tests/pending-beacon/pending_beacon-basic.window.js
index 01b37547f79..d6afd9fb5e5 100644
--- a/tests/wpt/tests/pending-beacon/pending_beacon-basic.window.js
+++ b/tests/wpt/tests/pending-beacon/pending_beacon-basic.window.js
@@ -1,6 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
-
 'use strict';
 
 test(() => {
diff --git a/tests/wpt/tests/pending-beacon/pending_beacon-sendondiscard.tentative.https.window.js b/tests/wpt/tests/pending-beacon/pending_beacon-sendondiscard.tentative.https.window.js
index 55704388b7c..b4283cecef7 100644
--- a/tests/wpt/tests/pending-beacon/pending_beacon-sendondiscard.tentative.https.window.js
+++ b/tests/wpt/tests/pending-beacon/pending_beacon-sendondiscard.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/utils.js
 // META: script=./resources/pending_beacon-helper.js
 
diff --git a/tests/wpt/tests/pending-beacon/pending_beacon-sendonhidden.tentative.https.window.js b/tests/wpt/tests/pending-beacon/pending_beacon-sendonhidden.tentative.https.window.js
index 8d7ff24e3f8..a0ede5dadd9 100644
--- a/tests/wpt/tests/pending-beacon/pending_beacon-sendonhidden.tentative.https.window.js
+++ b/tests/wpt/tests/pending-beacon/pending_beacon-sendonhidden.tentative.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/common/dispatcher/dispatcher.js
 // META: script=/common/get-host-info.sub.js
 // META: script=/common/utils.js
diff --git a/tests/wpt/tests/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js b/tests/wpt/tests/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js
new file mode 100644
index 00000000000..8488dd60ccf
--- /dev/null
+++ b/tests/wpt/tests/performance-timeline/not-restored-reasons/abort-block-bfcache.window.js
@@ -0,0 +1,21 @@
+// META: title=Aborting a parser should block bfcache
+// META: timeout=long
+
+
+async_test(t => {
+  if (!sessionStorage.getItem("pageVisited")) {
+    // This is the first time loading the page.
+    sessionStorage.setItem("pageVisited", 1);
+    t.step_timeout(() => {
+        // Go to another page and instantly come back to this page.
+        location.href = new URL("../resources/going-back.html", window.location);
+    }, 0);
+    // Abort parsing in the middle of loading the page.
+    window.stop();
+  } else {
+    const nrr = performance.getEntriesByType('navigation')[0].notRestoredReasons;
+    assert_equals(nrr.reasons.length, 1);
+    assert_equals(nrr.reasons[0], "parser-aborted");
+    t.done();
+  }
+}, "aborting a parser should block bfcache.");
diff --git a/tests/wpt/tests/performance-timeline/resources/going-back.html b/tests/wpt/tests/performance-timeline/resources/going-back.html
new file mode 100644
index 00000000000..f4a26669baa
--- /dev/null
+++ b/tests/wpt/tests/performance-timeline/resources/going-back.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+onload = (event) => {
+  history.back();
+};
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/push-api/noop-sw.js b/tests/wpt/tests/push-api/noop-sw.js
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/push-api/resources/helpers.js b/tests/wpt/tests/push-api/resources/helpers.js
new file mode 100644
index 00000000000..8395c638f3e
--- /dev/null
+++ b/tests/wpt/tests/push-api/resources/helpers.js
@@ -0,0 +1,12 @@
+function resetSw() {
+  return navigator.serviceWorker.getRegistrations().then(registrations => {
+    return Promise.all(registrations.map(r => r.unregister()));
+  });
+}
+
+async function registerSw(path) {
+  await resetSw();
+  add_completion_callback(resetSw);
+  const reg = await navigator.serviceWorker.register(path);
+  return reg;
+}
diff --git a/tests/wpt/tests/push-api/subscribe-with-faulty-applicationServerKey.https.window.js b/tests/wpt/tests/push-api/subscribe-with-faulty-applicationServerKey.https.window.js
new file mode 100644
index 00000000000..7d600803e43
--- /dev/null
+++ b/tests/wpt/tests/push-api/subscribe-with-faulty-applicationServerKey.https.window.js
@@ -0,0 +1,62 @@
+// META: script=/resources/testdriver.js
+// META: script=/resources/testdriver-vendor.js
+// META: script=resources/helpers.js
+
+// NOTE:
+// We are not testing success cases here as doing so will try creating external network
+// connection, which is not allowed by all browser test environments.
+// (e.g. Gecko explicitly disables push service for testing environment.)
+// Ideally we should have WPT-specific mock server in this case. See also
+// https://github.com/w3c/push-api/issues/365.
+
+promise_setup(async () => {
+  // The spec does not enforce validation order and implementations
+  // indeed check other things before checking applicationServerKey.
+
+  // Get the permission because Firefox checks it before key validation.
+  // (The permission test is done in permission.https.html.)
+  await test_driver.set_permission({ name: "notifications" }, "granted");
+  // Get the active service worker because Chrome checks it before key validation
+  registration = await registerSw("noop-sw.js");
+  await navigator.serviceWorker.ready;
+});
+
+promise_test(async (t) => {
+  await promise_rejects_dom(
+    t,
+    "InvalidAccessError",
+    registration.pushManager.subscribe({ applicationServerKey: "" }),
+  );
+}, "Reject empty string applicationServerKey");
+
+promise_test(async (t) => {
+  await promise_rejects_dom(
+    t,
+    "InvalidAccessError",
+    registration.pushManager.subscribe({ applicationServerKey: new ArrayBuffer(0) }),
+  );
+}, "Reject empty ArrayBuffer applicationServerKey");
+
+promise_test(async (t) => {
+  await promise_rejects_dom(
+    t,
+    "InvalidAccessError",
+    registration.pushManager.subscribe({ applicationServerKey: new Uint8Array(0) }),
+  );
+}, "Reject empty Uint8Array applicationServerKey");
+
+promise_test(async (t) => {
+  await promise_rejects_dom(
+    t,
+    "InvalidAccessError",
+    registration.pushManager.subscribe({ applicationServerKey: new Uint8Array([1, 2, 3]) }),
+  );
+}, "Reject a key that is not a valid point on P-256 curve");
+
+promise_test(async (t) => {
+  await promise_rejects_dom(
+    t,
+    "InvalidCharacterError",
+    registration.pushManager.subscribe({ applicationServerKey: "!@#$^&*" }),
+  );
+}, "Reject a string key that can't be decoded by base64url");
diff --git a/tests/wpt/tests/resources/testharness.js b/tests/wpt/tests/resources/testharness.js
index bc7fb8961b9..1a6a4bb3412 100644
--- a/tests/wpt/tests/resources/testharness.js
+++ b/tests/wpt/tests/resources/testharness.js
@@ -1201,6 +1201,23 @@
         object.addEventListener(event, callback, false);
     }
 
+    // Internal helper function to provide timeout-like functionality in
+    // environments where there is no setTimeout(). (No timeout ID or
+    // clearTimeout().)
+    function fake_set_timeout(callback, delay) {
+        var p = Promise.resolve();
+        var start = Date.now();
+        var end = start + delay;
+        function check() {
+            if ((end - Date.now()) > 0) {
+                p.then(check);
+            } else {
+                callback();
+            }
+        }
+        p.then(check);
+    }
+
     /**
      * Global version of :js:func:`Test.step_timeout` for use in single page tests.
      *
@@ -1212,7 +1229,8 @@
     function step_timeout(func, timeout) {
         var outer_this = this;
         var args = Array.prototype.slice.call(arguments, 2);
-        return setTimeout(function() {
+        var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
+        return local_set_timeout(function() {
             func.apply(outer_this, args);
         }, timeout * tests.timeout_multiplier);
     }
@@ -2720,7 +2738,8 @@
     Test.prototype.step_timeout = function(func, timeout) {
         var test_this = this;
         var args = Array.prototype.slice.call(arguments, 2);
-        return setTimeout(this.step_func(function() {
+        var local_set_timeout = typeof global_scope.setTimeout === "undefined" ? fake_set_timeout : setTimeout;
+        return local_set_timeout(this.step_func(function() {
             return func.apply(test_this, args);
         }), timeout * tests.timeout_multiplier);
     };
@@ -2751,6 +2770,7 @@
         var timeout_full = timeout * tests.timeout_multiplier;
         var remaining = Math.ceil(timeout_full / interval);
         var test_this = this;
+        var local_set_timeout = typeof global_scope.setTimeout === 'undefined' ? fake_set_timeout : setTimeout;
 
         const step = test_this.step_func((result) => {
             if (result) {
@@ -2761,7 +2781,7 @@
                            "Timed out waiting on condition");
                 }
                 remaining--;
-                setTimeout(wait_for_inner, interval);
+                local_set_timeout(wait_for_inner, interval);
             }
         });
 
@@ -4777,6 +4797,15 @@
         return "Untitled";
     }
 
+    /** Fetches a JSON resource and parses it */
+    async function fetch_json(resource) {
+        const response = await fetch(resource);
+        return await response.json();
+    }
+    if (!global_scope.GLOBAL || !global_scope.GLOBAL.isShadowRealm()) {
+        expose(fetch_json, 'fetch_json');
+    }
+
     /**
      * Setup globals
      */
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/fieldset-source.html b/tests/wpt/tests/scroll-animations/view-timelines/fieldset-source.html
new file mode 100644
index 00000000000..d75f30e664e
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/fieldset-source.html
@@ -0,0 +1,111 @@
+<!DOCTYPE html>
+<html>
+<meta charset="utf-8">
+<title>View timeline with fieldset as source</title>
+<link rel="help" href="https://www.w3.org/TR/scroll-animations-1/#dom-viewtimeline-viewtimeline">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<style>
+  @keyframes colorize {
+    from { background-color: #ccf; }
+    to { background-color: white; }
+  }
+
+  .input {
+    background-color: white;
+    view-timeline: --timeline;
+    animation: colorize;
+    animation-timeline: --timeline;
+    margin-top: 0px;
+    margin-bottom: 3px;
+    margin-left: 8px;
+    height: 20px;
+    width: 150px;
+  }
+
+  .input:last-child {
+    margin-bottom: 0px;
+  }
+
+  fieldset {
+    display: inline-block;
+    overflow-x: hidden;
+    overflow-y: scroll;
+    height: 80px;
+  }
+
+  div {
+    display: flex;
+    justify-content: flex-end;
+    align-items: center;
+  }
+</style>
+<body>
+  <fieldset id="fieldset">
+    <legend id="legend">Reservation Details</legend>
+    <div>
+      <label for="name">Name: </label>
+      <input type="text" class="input" id="input1" value="Jane Doe" />
+    </div>
+    <div>
+      <label for="date">Date: </label>
+      <input type="date" class="input" id="input2" value="2024-01-16"/>
+    </div>
+    <div>
+      <label for="time">Time: </label>
+      <input type="time" class="input" id="input3" value="18:30"/>
+    </div>
+    <div>
+      <label for="name">Number of guests: </label>
+      <input type="number" class="input" id="input4" value="5" />
+    </div>
+    <div>
+      <label for="name">Contact info: </label>
+      <input type="text" class="input" id="input5" value="(555) 555-5555" />
+    </div>
+  </fieldset>
+</body>
+<script>
+  async function runTest() {
+    promise_test(async t => {
+      const anims = document.getAnimations();
+      assert_equals(anims.length, 5);
+      await Promise.all(anims.map(anim => anim.ready));
+
+      // The bottom of the legend aligns with the top of the fieldset's
+      // scrollable area.
+      const fieldset = document.getElementById('fieldset');
+      const legend = document.getElementById('legend');
+      const fieldsetContentTop =
+          legend.getBoundingClientRect().bottom;
+
+      // The bottom of the scroll container aligns with the bottom of the
+      // fieldset's content box.
+      const fieldsetContentBottom =
+          fieldset.getBoundingClientRect().bottom -
+          parseFloat(getComputedStyle(fieldset).borderBottom);
+
+      // Validate the start and end offsets for each view timeline.
+      anims.forEach(async (anim) => {
+        assert_equals(anim.timeline.source.id, 'fieldset');
+        assert_equals(anim.timeline.subject.tagName, 'INPUT');
+        const bounds = anim.effect.target.getBoundingClientRect();
+
+        const expectedStartOffset = bounds.top - fieldsetContentBottom;
+        const expectedEndOffset = bounds.bottom - fieldsetContentTop;
+        assert_approx_equals(
+            parseFloat(anim.timeline.startOffset),
+            expectedStartOffset, 0.1,
+            `Unexpected start offset for ${anim.effect.target.id}`);
+        assert_approx_equals(
+            parseFloat(anim.timeline.endOffset),
+            expectedEndOffset, 0.1,
+            `Unexpected end offset for ${anim.effect.target.id}`);
+      });
+    }, 'Fieldset is a valid source for a view timeline');
+  }
+
+  window.onload = runTest();
+</script>
+</html>
diff --git a/tests/wpt/tests/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html b/tests/wpt/tests/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html
new file mode 100644
index 00000000000..9f9dfbc9384
--- /dev/null
+++ b/tests/wpt/tests/selection/crashtests/selectall-and-find-svg-text-on-selectstart.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<html class="reftest-wait">
+<head>
+<meta charset="utf-8">
+<script>
+addEventListener("DOMContentLoaded", () => {
+  let i = 5;
+  document.addEventListener("selectstart", () => {
+    window.find("AAA");
+    document.querySelector("li").before(document.querySelector("text"));
+    if (!(--i)) {
+      document.documentElement.removeAttribute("class");
+    }
+  });
+  document.execCommand("selectAll");
+}, {once: true});
+</script>
+<body>
+<svg>
+<text>AAA</text>
+<li>
+</li></svg></body>
+</html>
diff --git a/tests/wpt/tests/selection/crashtests/selection-modify-line-next-to-textarea.html b/tests/wpt/tests/selection/crashtests/selection-modify-line-next-to-textarea.html
new file mode 100644
index 00000000000..b685add01c0
--- /dev/null
+++ b/tests/wpt/tests/selection/crashtests/selection-modify-line-next-to-textarea.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html>
+<head>
+<meta charset="utf-8">
+<script>
+addEventListener("load", () => {
+  getSelection().collapse(document.querySelector("header"), 1);
+  getSelection().modify("move", "backward", "line");
+  const ruby = document.querySelector("ruby");
+  ruby.parentElement.replaceChild(document.createElement("h3"), ruby);
+  getSelection().modify("extend", "backward", "character");
+});
+</script>
+</head>
+<body>
+<textarea>
+</textarea>
+<abbr>
+<header>
+<select autofocus='false'>
+<input/>
+<sup>
+<ruby id='a'>
+</body>
+</html>
diff --git a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/direct.html b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/direct.html
new file mode 100644
index 00000000000..e98d70207af
--- /dev/null
+++ b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/direct.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<title>Direct</title>
+<body>
+  Here's a direct html from network.
+</body>
diff --git a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/router-rules.js b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/router-rules.js
index f8fe4032986..3ecd2025b39 100644
--- a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/router-rules.js
+++ b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/router-rules.js
@@ -12,11 +12,13 @@ const routerRules = {
   'condition-urlpattern-string-source-network': [
     {condition: {urlPattern: '/**/direct.txt'}, source: 'network'},
   ],
+  'condition-urlpattern-string-source-cache': [
+    {condition: {urlPattern: '/**/cache.txt'}, source: 'cache'},
+  ],
   'condition-urlpattern-constructed-ignore-case-source-network': [{
     condition: {
-      urlPattern: new URLPattern(
-          {pathname: '/**/DiReCT.TxT'},
-          {ignoreCase: true})
+      urlPattern:
+          new URLPattern({pathname: '/**/DiReCT.TxT'}, {ignoreCase: true})
     },
     source: 'network'
   }],
@@ -37,6 +39,15 @@ const routerRules = {
     },
     source: 'network'
   }],
+  'multiple-router-rules': [
+    {
+      condition: {
+        urlPattern: '/**/direct.txt',
+      },
+      source: 'network'
+    },
+    {condition: {urlPattern: '/**/direct.html'}, source: 'network'}
+  ]
 };
 
 export {routerRules};
diff --git a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/static-router-sw.js b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/static-router-sw.js
index 1e02dbb56de..055c07113c5 100644
--- a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/static-router-sw.js
+++ b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/resources/static-router-sw.js
@@ -5,6 +5,9 @@ import {routerRules} from './router-rules.js';
 var requests = [];
 
 self.addEventListener('install', async e => {
+  e.waitUntil(caches.open('v1').then(
+      cache => {cache.put('cache.txt', new Response('From cache'))}));
+
   const params = new URLSearchParams(location.search);
   const key = params.get('key');
   await e.addRoutes(routerRules[key]);
diff --git a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-main-resource.https.html b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-main-resource.https.html
index 1673b97ca7b..30bbf60e83f 100644
--- a/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-main-resource.https.html
+++ b/tests/wpt/tests/service-workers/service-worker/tentative/static-router/static-router-main-resource.https.html
@@ -15,59 +15,74 @@ const ROUTER_RULE_KEY_IGNORE_CASE =
   'condition-urlpattern-constructed-ignore-case-source-network';
 const ROUTER_RULE_KEY_RESPECT_CASE =
   'condition-urlpattern-constructed-respect-case-source-network';
+const ROUTER_RULE_KEY_MULTIPLE_RULES = 'multiple-router-rules';
+const ROUTER_RULE_KEY_URLPATTERN_CACHE =
+  'condition-urlpattern-string-source-cache';
 const SCOPE = 'resources/';
 const REGISTERED_ROUTE = 'resources/direct.txt';
+const ADDITIONAL_REGISTERED_ROUTE = 'resources/direct.html';
+const CACHED_ROUTE = 'resources/cache.txt';
 const NON_REGISTERED_ROUTE = 'resources/simple.html';
 const host_info = get_host_info();
 const path = new URL(".", window.location).pathname;
 
+const registerAndActivate = async (t, ruleKey) => {
+  const swURL = `${SCRIPT}?key=${ruleKey}`;
+  const reg = await service_worker_unregister_and_register(
+    t, swURL, SCOPE, { type: 'module' });
+  add_completion_callback(() => reg.unregister());
+  const worker = reg.installing;
+  await wait_for_state(t, worker, 'activated');
+
+  return worker;
+};
+
+const createIframe = async (t, url) => {
+  const iframe = await with_iframe(url);
+  t.add_cleanup(() => iframe.remove());
+
+  return iframe;
+};
+
 // Register a service worker, then create an iframe at url.
 function iframeTest(url, ruleKey, callback, name) {
   return promise_test(async t => {
-    const swURL = `${SCRIPT}?key=${ruleKey}`;
-    const reg = await service_worker_unregister_and_register(
-      t, swURL, SCOPE, {type: 'module'});
-    add_completion_callback(() => reg.unregister());
-    const worker = reg.installing;
-    await wait_for_state(t, worker, 'activated');
-    const iframe = await with_iframe(url);
-    const iwin = iframe.contentWindow;
-    t.add_cleanup(() => iframe.remove());
-    await callback(t, iwin, worker);
+    const worker = await registerAndActivate(t, ruleKey);
+    const iframe = await createIframe(t, url);
+    await callback(t, iframe.contentWindow, worker);
   }, name);
 }
 
-function get_fetched_urls(worker) {
-  return new Promise(function(resolve) {
+const get_fetched_urls = async worker => {
+  const promise = new Promise(function(resolve) {
       var channel = new MessageChannel();
       channel.port1.onmessage = function(msg) { resolve(msg); };
       worker.postMessage({port: channel.port2}, [channel.port2]);
     });
+  const message = await promise;
+
+  return message.data;
 }
 
 iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin, worker) => {
-  const fetched_urls = await get_fetched_urls(worker);
-  const {requests} = fetched_urls.data;
+  const {requests} = await get_fetched_urls(worker);
   assert_equals(requests.length, 0);
   assert_equals(iwin.document.body.innerText, "Network\n");
 }, 'Main resource load matched with the condition');
 
 iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY_IGNORE_CASE, async (t, iwin, worker) => {
-  const fetched_urls = await get_fetched_urls(worker);
-  const {requests} = fetched_urls.data;
+  const {requests} = await get_fetched_urls(worker);
   assert_equals(requests.length, 0);
   assert_equals(iwin.document.body.innerText, "Network\n");
 }, 'Main resource load matched with the ignore case condition');
 
 iframeTest(REGISTERED_ROUTE, ROUTER_RULE_KEY_RESPECT_CASE, async (t, iwin, worker) => {
-  const fetched_urls = await get_fetched_urls(worker);
-  const {requests} = fetched_urls.data;
+  const {requests} = await get_fetched_urls(worker);
   assert_equals(requests.length, 1);
 }, 'Main resource load matched without the ignore case condition');
 
 iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin, worker) => {
-  const fetched_urls = await get_fetched_urls(worker);
-  const {requests} = fetched_urls.data;
+  const {requests} = await get_fetched_urls(worker);
   assert_equals(requests.length, 1);
   assert_equals(
     requests[0].url,
@@ -75,5 +90,26 @@ iframeTest(NON_REGISTERED_ROUTE, ROUTER_RULE_KEY, async (t, iwin, worker) => {
   assert_equals(requests[0].mode, 'navigate');
 }, 'Main resource load not matched with the condition');
 
+promise_test(async t => {
+  const worker = await registerAndActivate(t, ROUTER_RULE_KEY_MULTIPLE_RULES);
+
+  // Matched with the first rule.
+  const iframe = await createIframe(t, REGISTERED_ROUTE);
+  assert_equals(iframe.contentWindow.document.body.innerText, "Network\n");
+
+  // Matched with the second rule.
+  const second_iframe = await createIframe(t, ADDITIONAL_REGISTERED_ROUTE);
+  assert_equals(second_iframe.contentWindow.document.body.innerText, "Here's a direct html from network.");
+
+  const {requests} = await get_fetched_urls(worker);
+  assert_equals(requests.length, 0);
+}, 'Main reosurce load matched with the service worker having multiple rules');
+
+iframeTest(CACHED_ROUTE, ROUTER_RULE_KEY_URLPATTERN_CACHE, async (t, iwin, worker) => {
+  const {requests} = await get_fetched_urls(worker);
+  assert_equals(requests.length, 0);
+  assert_equals(iwin.document.body.innerText, "From cache");
+}, 'Main resource load matched with the cache source');
+
 </script>
 </body>
diff --git a/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-attachment.html b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-attachment.html
index dcee6cf8a10..aec9a276f93 100644
--- a/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-attachment.html
+++ b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-attachment.html
@@ -42,9 +42,13 @@ function testElementType(allowed, nochildren, elementType, mode, delegatesFocus)
         originalShadowRoot = element.shadowRoot;
       }
 
-      // Now, call attachShadow() and make sure we get back the same (original) shadowRoot, but empty.
       const oppositeMode = (mode === 'open') ? 'closed' : 'open';
-      const newShadow = element.attachShadow({mode: oppositeMode}); // Should be no exception here
+      assert_throws_dom('NotSupportedError', () => {
+        element.attachShadow({mode: oppositeMode});
+      }, 'Calling attachShadow with a declarative shadow fails if the mode doesn\'t match');
+
+      // Now, call attachShadow() and make sure we get back the same (original) shadowRoot, but empty.
+      const newShadow = element.attachShadow({mode: mode, delegatesFocus: delegatesFocus});
       if (mode === 'open') {
         assert_equals(element.shadowRoot, originalShadowRoot, 'The same shadow root should be returned');
         assert_equals(element.shadowRoot.innerHTML, '', 'Empty shadow content');
@@ -60,7 +64,7 @@ function testElementType(allowed, nochildren, elementType, mode, delegatesFocus)
       }, 'Calling attachShadow a second time on an element with a declarative shadow fails (opposite mode)');
     } else {
       if (!nochildren) {
-        // Invalid elements should retain a <template> element child with a shadowroot attribute.
+        // Invalid elements should retain a <template> element child with a shadowrootmode attribute.
         const template = nodes.wrapper.querySelector('template[shadowrootmode]');
         assert_true(!!template);
         assert_equals(template.getAttribute('shadowrootmode'), mode, `Template with shadowrootmode=${mode} should be left over`);
diff --git a/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html
index 20ca34f6f3e..8799978804a 100644
--- a/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html
+++ b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-basic.html
@@ -154,10 +154,14 @@ test(() => {
 <script>
 test(() => {
   const host = document.querySelector('#multi-host');
-  assert_equals(host.querySelector('template'), null, "No leftover template nodes from either root");
+  const leftover = host.querySelector('template');
+  assert_true(!!leftover, "The second (duplicate) template should be left in the DOM");
+  assert_true(leftover instanceof HTMLTemplateElement);
+  assert_equals(leftover.getAttribute('shadowrootmode'),"closed");
+  assert_equals(leftover.shadowRootMode,"closed");
   assert_true(!!host.shadowRoot,"No open shadow root found - first root should remain");
   const innerSpan = host.shadowRoot.querySelector('span');
-  assert_equals(innerSpan.textContent, 'root 2', "Content should come from last declarative shadow root");
+  assert_equals(innerSpan.textContent, 'root 1', "Content should come from first declarative shadow root");
 }, 'Declarative Shadow DOM: Multiple roots');
 
 </script>
diff --git a/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-repeats.html b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-repeats.html
new file mode 100644
index 00000000000..3da9cff360c
--- /dev/null
+++ b/tests/wpt/tests/shadow-dom/declarative/declarative-shadow-dom-repeats.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<title>Declarative Shadow DOM Element Attachment</title>
+<link rel='author' href='mailto:masonf@chromium.org'>
+<link rel='help' href='https://github.com/whatwg/dom/issues/1235'>
+<link rel='help' href='https://github.com/whatwg/html/pull/10069'>
+<link rel='help' href='https://github.com/whatwg/dom/pull/1246'>
+
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script src='../../html/resources/common.js'></script>
+<script src="support/helpers.js"></script>
+
+<div id=multiple1>
+  <template shadowrootmode=open>Open</template>
+  <template shadowrootmode=closed>Closed</template>
+</div>
+
+<div id=multiple2>
+  <template shadowrootmode=closed>Closed</template>
+  <template shadowrootmode=open>Open</template>
+</div>
+
+<script>
+test((t) => {
+  let shadow = multiple1.shadowRoot;
+  assert_true(!!shadow,'Remaining shadow root should be open');
+  assert_equals(shadow.textContent,"Open");
+  shadow = multiple2.shadowRoot;
+  assert_false(!!shadow,'Remaining shadow root should be closed');
+  multiple1.remove(); // Cleanup
+  multiple2.remove();
+},'Repeated declarative shadow roots keep only the first');
+</script>
+
+<div id=open1>
+  <template shadowrootmode=open>Open</template>
+</div>
+
+<script>
+test((t) => {
+  assert_throws_dom("NotSupportedError",() => {
+    open1.attachShadow({mode: "closed"});
+  },'Mismatched shadow root type should throw');
+  const initialShadow = open1.shadowRoot;
+  const shadow = open1.attachShadow({mode: "open"}); // Shouldn't throw
+  assert_equals(shadow,initialShadow,'Same shadow should be returned');
+  assert_equals(shadow.textContent,'','Shadow should be empty');
+},'Calling attachShadow() on declarative shadow root must match type');
+</script>
+
+<div id=open2>
+  <template shadowrootmode=open shadowrootdelegatesfocus>
+    Open, delegates focus (not the default), named slot assignment (the default)
+  </template>
+</div>
+
+<script>
+test((t) => {
+  assert_throws_dom("NotSupportedError",() => {
+    open2.attachShadow({mode: "closed", delegatesFocus: true, slotAssignment: "named"});
+  },'Mismatched shadow root type should throw');
+  assert_throws_dom("NotSupportedError",() => {
+    open2.attachShadow({mode: "open", delegatesFocus: false, slotAssignment: "named"});
+  },'Mismatched shadow root delegatesFocus should throw');
+  assert_throws_dom("NotSupportedError",() => {
+    open2.attachShadow({mode: "open", delegatesFocus: true, slotAssignment: "manual"});
+  },'Mismatched shadow root slotAssignment should throw');
+  const initialShadow = open2.shadowRoot;
+  const shadow = open2.attachShadow({mode: "open", delegatesFocus: true, slotAssignment: "named"}); // Shouldn't throw
+  assert_equals(shadow,initialShadow,'Same shadow should be returned');
+  assert_equals(shadow.textContent,'','Shadow should be empty');
+},'Calling attachShadow() on declarative shadow root must match all parameters');
+</script>
diff --git a/tests/wpt/tests/shadow-dom/declarative/innerhtml-before-closing-tag.html b/tests/wpt/tests/shadow-dom/declarative/innerhtml-before-closing-tag.html
index e87c4258600..f038d3ecb2e 100644
--- a/tests/wpt/tests/shadow-dom/declarative/innerhtml-before-closing-tag.html
+++ b/tests/wpt/tests/shadow-dom/declarative/innerhtml-before-closing-tag.html
@@ -46,6 +46,6 @@ test(t => {
   assert_true(!!shadowroot, 'Shadow root should be present');
   assert_true(!!shadowroot.querySelector('#newcontent'),'The innerHTML replacement content should be present');
   assert_true(!shadowroot.querySelector('#oldcontent'),'The old replaced content should not be present');
-}, 'Declarative Shadow DOM: innerHTML should work while parsing STREAMING declarative shadow root <template>');
+}, 'Declarative Shadow DOM: innerHTML should work while parsing streaming declarative shadow root <template>');
 </script>
 </body>
diff --git a/tests/wpt/tests/shape-detection/detection-ImageDataUint16StorageFormat.https.window.js b/tests/wpt/tests/shape-detection/detection-ImageDataUint16StorageFormat.https.window.js
index 24dd3e597c9..1afe087abf0 100644
--- a/tests/wpt/tests/shape-detection/detection-ImageDataUint16StorageFormat.https.window.js
+++ b/tests/wpt/tests/shape-detection/detection-ImageDataUint16StorageFormat.https.window.js
@@ -1,5 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
 // META: script=/shape-detection/resources/shapedetection-helpers.js
 
 const imgUint16 = new ImageData(1024, 1024, {storageFormat: 'uint16'});
diff --git a/tests/wpt/tests/soft-navigation-heuristics/click-event-bubbles.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/click-event-bubbles.tentative.html
new file mode 100644
index 00000000000..ee9d1e12335
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/click-event-bubbles.tentative.html
@@ -0,0 +1,28 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+</head>
+<body>
+  <main id=main>
+  <a id=link>Click me!</a>
+  </main>
+  <script>
+    const link = document.getElementById("link");
+    // Adding a noop event that the "click" would bubble to.
+    document.getElementById("main").addEventListener("click", () => {});
+
+    testSoftNavigation({
+      addContent: () => {
+        addTextParagraphToMain("Lorem Ipsum");
+      },
+      link: link,
+      test: "Ensure event bubbling works well with soft navigations."});
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection-second-softnav.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection-second-softnav.tentative.html
new file mode 100644
index 00000000000..4d26bb92695
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection-second-softnav.tentative.html
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+</head>
+<body>
+  <main id=main>
+    <div>
+      <a id=link><img src="/images/lcp-256x256.png" id="img"></a>
+    </div>
+  </main>
+  <script>
+    const link = document.getElementById("link");
+    let first_lcp_painted;
+    let second_lcp_painted;
+    (async () => {
+      await new Promise(r => { first_lcp_painted = r; });
+      addImageToMain("lcp-133x106.png", "no_lcp");
+      (new PerformanceObserver(second_lcp_painted)).observe({type: "element"});
+    })();
+    testSoftNavigation({
+      pushState: null,
+      clicks: 2,
+      addContent: async () => {
+        // Add an LCP element.
+        await new Promise(resolve => {
+          addImageToMain("lcp-100x50.png", "first_lcp" + counter);
+          (new PerformanceObserver(resolve)).observe({type: "element"});
+        });
+        if(counter) {
+          first_lcp_painted();
+          // Wait for the unrelated LCP to be painted.
+          await new Promise(r => { second_lcp_painted = r; });
+        }
+        const url = URL + "?" + counter;
+        history.pushState({}, '', url);
+      },
+      link: link,
+      validate: async () => {
+        const lcps = await getLcpEntries();
+        const ref_counter = counter-1;
+        assert_equals(lcps.length, 2 + ref_counter, "Got 2 LCP entries");
+        assert_equals(lcps[lcps.length - 1].id, "first_lcp" + ref_counter,
+                      "Got the first LCP");
+      },
+      test: "Second soft navigation image LCP discovered between user " +
+            "interaction and soft navigation detection are properly " +
+            "reported, while unrelated LCPs are ignored during that time. " +
+            "As a side effect, we also test element timing."});
+  </script>
+</body>
+</html>
+
+
+
diff --git a/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection.tentative.html
new file mode 100644
index 00000000000..0de675d372b
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/image-lcp-before-detection.tentative.html
@@ -0,0 +1,54 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+</head>
+<body>
+  <main id=main>
+    <div>
+      <a id=link><img src="/images/lcp-256x256.png" id="img"></a>
+    </div>
+  </main>
+  <script>
+    const link = document.getElementById("link");
+    let first_lcp_painted;
+    let second_lcp_painted;
+    (async () => {
+      await new Promise(r => { first_lcp_painted = r; });
+      addImageToMain("lcp-133x106.png", "no_lcp");
+      (new PerformanceObserver(second_lcp_painted)).observe({type: "element"});
+    })();
+    testSoftNavigation({
+      pushState: null,
+      addContent: async () => {
+        // Add an LCP element.
+        await new Promise(resolve => {
+          addImageToMain("lcp-100x50.png", "first_lcp");
+          (new PerformanceObserver(resolve)).observe({type: "element"});
+        });
+        first_lcp_painted();
+        // Wait for the unrelated LCP to be painted.
+        await new Promise(r => { second_lcp_painted = r; });
+        const url = URL + "?" + counter;
+        history.pushState({}, '', url);
+      },
+      link: link,
+      validate: async () => {
+        const lcps = await getLcpEntries();
+        assert_equals(lcps.length, 2, "Got 2 LCP entries");
+        assert_equals(lcps[lcps.length - 1].id, "first_lcp", "Got the first LCP");
+      },
+      test: "Image LCP discovered between user interaction and soft " +
+            "navigation detection are properly reported, while unrelated " +
+            "LCPs are ignored during that time. As a side effect, we also " +
+            "test element timing."});
+  </script>
+</body>
+</html>
+
+
diff --git a/tests/wpt/tests/soft-navigation-heuristics/interaction-with-paint-before-back.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/interaction-with-paint-before-back.tentative.html
new file mode 100644
index 00000000000..b5874119913
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/interaction-with-paint-before-back.tentative.html
@@ -0,0 +1,76 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+</head>
+<body>
+  <main id=main>
+    <div>
+      <a id=link><img src="/images/lcp-256x256.png" id="img"></a>
+      <a id=not_nav><img src="/images/lcp-16x16.png"></a>
+    </div>
+  </main>
+  <script>
+    // Push state a couple of times
+    history.pushState({}, "", "foobar.html");
+    history.pushState({}, "", "anotherOne.html");
+
+    (async () => {
+      const link = document.getElementById("link");
+      // Trigger a user interaction that doesn't result in a soft navigation, but
+      // does paint.
+      await (async () => {
+        const not_nav = document.getElementById("not_nav");
+        let non_soft_nav_click;
+        const non_soft_nav_click_promise =
+          new Promise(r => { non_soft_nav_click = r; });
+        not_nav.addEventListener("click", () => {
+          addImageToMain("lcp-133x106.png", "not_soft_nav_image");
+          (new PerformanceObserver(non_soft_nav_click)).observe({type: "element"});
+        });
+        if (test_driver) {
+          test_driver.click(not_nav);
+        }
+        await non_soft_nav_click_promise;
+      })();
+      const url = URL + "?" + counter;
+      link.addEventListener("click", () => {
+        // Add an LCP element.
+        const img = new Image();
+        img.src = '/images/lcp-100x500.png' + "?" + Math.random();
+        document.getElementById("main").appendChild(img);
+        history.back();
+      });
+      promise_test(async t => {
+        if (test_driver) {
+          test_driver.click(link);
+        }
+        await waitOnSoftNav();
+        assert_equals(
+            document.softNavigations, 1,
+            'Single Soft Navigation detected');
+        const [entries, options] = await new Promise(resolve => {
+          (new PerformanceObserver((list, obs, options) => resolve(
+            [list.getEntries(), options]))).observe(
+            {type: 'soft-navigation', buffered: true});
+          });
+
+        assert_equals(entries.length, 1,
+                      "Performance observer got an entry");
+      }, "Ensure that soft navigation entry emitted through a synchronous " +
+         "event that modified DOM and committed a same document navigation, " +
+         "and that was preceded by a user intreaction that resulted in a " +
+         "contentful paint is properly detected.");
+    })();
+  </script>
+</body>
+</html>
+
+
+
+
diff --git a/tests/wpt/tests/soft-navigation-heuristics/multiple_nested_events.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/multiple-nested-events.tentative.html
similarity index 94%
rename from tests/wpt/tests/soft-navigation-heuristics/multiple_nested_events.tentative.html
rename to tests/wpt/tests/soft-navigation-heuristics/multiple-nested-events.tentative.html
index 196cfa06868..e51841865d6 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/multiple_nested_events.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/multiple-nested-events.tentative.html
@@ -24,7 +24,6 @@
     });
     testSoftNavigation({
       eventPrepWork: url => {
-        timestamps[counter]["eventStart"] = performance.now();
         addTextToDivOnMain();
         history.pushState({}, '', 'foobar1.html');
         // Here we're bypassing the regular test's event logic, as this test is
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-after-transition-commit.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-after-transition-commit.tentative.html
index 5c7d8f4f7a4..ae17db7d59f 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-after-transition-commit.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-after-transition-commit.tentative.html
@@ -16,11 +16,11 @@
   <script>
     const link = document.getElementById("link");
     testNavigationApi("Test soft navigation when navigate event intecepts with { commit: 'after-transition' }", e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({commit: "after-transition", handler: async () => {
           await addImageToMain();
           e.commit();
         }});
+        timestamps[counter]["eventEnd"] = performance.now();
       }, link);
   </script>
 </body>
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-hash.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-hash.tentative.html
index a63b177a63f..e20578ea79e 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-hash.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-hash.tentative.html
@@ -16,11 +16,11 @@
   <script>
     const link = document.getElementById("link");
     testNavigationApi("Test soft navigation with the Navigation API", e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({handler: async () => {
           await addImageToMain();
           main.appendChild(img);
         }});
+        timestamps[counter]["eventEnd"] = performance.now();
       }, link);
   </script>
 </body>
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-preventDefault.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-preventDefault.tentative.html
index d6c61efb3cb..b7b2a24c942 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-preventDefault.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-preventDefault.tentative.html
@@ -19,12 +19,12 @@
     testSoftNavigationNotDetected({
       testName: "Aborted navigate event is not a soft navigation",
       eventHandler: e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({handler: async () => {
           await addImageToMain();
           main.appendChild(img);
         }});
         e.preventDefault();
+        timestamps[counter]["eventEnd"] = performance.now();
       },
       eventTarget: navigation,
       eventName: "navigate",
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-rejected.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-rejected.tentative.html
index bcc0451d5bd..693f876b6e1 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-rejected.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-rejected.tentative.html
@@ -16,11 +16,11 @@
   <script>
     const link = document.getElementById("link");
     testNavigationApi("Test intercepted and rejected navigate event", e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({handler: async () => {
           await addImageToMain();
           throw new Error("This navigation handler rejected");
         }});
+        timestamps[counter]["eventEnd"] = performance.now();
       }, link);
   </script>
 </body>
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-view-transition.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-view-transition.tentative.html
index 2755f9f9ac7..4d88f3d0b7d 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api-view-transition.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api-view-transition.tentative.html
@@ -23,7 +23,6 @@
       await new Promise(r => step_timeout(r, 0));
 
       const navigate_callback = e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({
           async handler() {
             const lcp_promise = new Promise(resolve => {
@@ -41,6 +40,7 @@
             await lcp_promise;
           }
         });
+        timestamps[counter]["eventEnd"] = performance.now();
       };
 
       const link = document.getElementById("link");
diff --git a/tests/wpt/tests/soft-navigation-heuristics/navigation-api.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/navigation-api.tentative.html
index ca11f684f49..2d61736a486 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/navigation-api.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/navigation-api.tentative.html
@@ -16,10 +16,10 @@
   <script>
     const link = document.getElementById("link");
     testNavigationApi("Test soft navigation with the Navigation API", e => {
-        timestamps[counter]["eventStart"] = performance.now();
         e.intercept({handler: async () => {
           await addImageToMain();
         }});
+        timestamps[counter]["eventEnd"] = performance.now();
       }, link);
   </script>
 </body>
diff --git a/tests/wpt/tests/soft-navigation-heuristics/popstate-multiple-backs.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/popstate-multiple-backs.tentative.html
index 2a12a352bff..fd87f5f03e7 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/popstate-multiple-backs.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/popstate-multiple-backs.tentative.html
@@ -39,7 +39,10 @@
       return t.popped == 2;
     }
     const link = document.getElementById("link");
-    link.addEventListener("click", () => history.back());
+    link.addEventListener("click", () => {
+      history.back();
+      timestamps[counter]["eventEnd"] = performance.now();
+    });
     testSoftNavigation({
       addContent: () => {
         // Add the content to the main element
diff --git a/tests/wpt/tests/soft-navigation-heuristics/popstate.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/popstate.tentative.html
index 60a5ff72292..f89991d76b0 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/popstate.tentative.html
+++ b/tests/wpt/tests/soft-navigation-heuristics/popstate.tentative.html
@@ -22,7 +22,10 @@
     history.pushState({}, "", "another_one.html");
 
     const link = document.getElementById("link");
-    link.addEventListener("click", () => history.back());
+    link.addEventListener("click", () => {
+      history.back();
+      timestamps[counter]["eventEnd"] = performance.now();
+    });
     testSoftNavigation({
       addContent: () => {
         // Add the content to the main element
diff --git a/tests/wpt/tests/soft-navigation-heuristics/resources/soft-navigation-helper.js b/tests/wpt/tests/soft-navigation-heuristics/resources/soft-navigation-helper.js
index 58ca9c22657..d405adb4e7e 100644
--- a/tests/wpt/tests/soft-navigation-heuristics/resources/soft-navigation-helper.js
+++ b/tests/wpt/tests/soft-navigation-heuristics/resources/soft-navigation-helper.js
@@ -6,7 +6,7 @@ const MAX_CLICKS = 50;
 const MAX_PAINT_ENTRIES = 51;
 const URL = "foobar.html";
 const readValue = (value, defaultValue) => {
-  return value != undefined ? value : defaultValue;
+  return value !== undefined ? value : defaultValue;
 }
 const testSoftNavigation =
     options => {
@@ -144,10 +144,17 @@ const setEvent = (t, button, pushState, addContent, pushUrl, eventType, prepWork
   const eventObject =
       (eventType == 'click' || eventType.startsWith("key")) ? button : window;
   eventObject.addEventListener(eventType, async e => {
+    let prepWorkFailed = false;
     if (prepWork &&!prepWork(t)) {
+      prepWorkFailed = true;
+    }
+    // This is the end of the event's sync processing.
+    if (!timestamps[counter]["eventEnd"]) {
+      timestamps[counter]["eventEnd"] = performance.now();
+    }
+    if (prepWorkFailed) {
       return;
     }
-    timestamps[counter]["eventStart"] = performance.now();
     // Jump through a task, to ensure task tracking is working properly.
     await new Promise(r => t.step_timeout(r, 0));
 
@@ -165,9 +172,9 @@ const setEvent = (t, button, pushState, addContent, pushUrl, eventType, prepWork
     await new Promise(r => t.step_timeout(r, 10));
 
     await addContent(url);
-    ++counter;
 
     interacted = true;
+    ++counter;
   });
 };
 
@@ -190,7 +197,7 @@ const validateSoftNavigationEntry = async (clicks, extraValidations,
     assert_less_than_equal(timestamps[i]["syncPostInteraction"], entryTimestamp,
                 "Entry timestamp is lower than the post interaction one");
     assert_greater_than_equal(
-        timestamps[i]['eventStart'], entryTimestamp,
+        entryTimestamp, timestamps[i]['eventEnd'],
         'Event start timestamp matches');
     assert_not_equals(entry.navigationId,
                       performance.getEntriesByType("navigation")[0].navigationId,
@@ -284,15 +291,16 @@ const getLcpEntriesWithoutSoftNavs = async () => {
   return entries;
 };
 
-const addImage = async (element, url="blue.png") => {
+const addImage = async (element, url="blue.png", id = "imagelcp") => {
   const img = new Image();
   img.src = '/images/'+ url + "?" + Math.random();
-  img.id="imagelcp";
+  img.id=id
+  img.setAttribute("elementtiming", id);
   await img.decode();
   element.appendChild(img);
 };
-const addImageToMain = async (url="blue.png") => {
-  await addImage(document.getElementById('main'), url);
+const addImageToMain = async (url="blue.png", id = "imagelcp") => {
+  await addImage(document.getElementById('main'), url, id);
 };
 
 const addTextParagraphToMain = (text, element_timing = "") => {
diff --git a/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection-second-softnav.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection-second-softnav.tentative.html
new file mode 100644
index 00000000000..bed27c35069
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection-second-softnav.tentative.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+</head>
+<body>
+  <main id=main>
+    <div>
+      <a id=link><img src="/images/lcp-256x256.png" id="img"></a>
+    </div>
+  </main>
+  <script>
+    const link = document.getElementById("link");
+    let first_lcp_painted;
+    let second_lcp_painted;
+    (async () => {
+      await new Promise(r => { first_lcp_painted = r; });
+      addTextParagraphToMain("LOREM IPSUMR", "no lcp");
+      (new PerformanceObserver(second_lcp_painted)).observe({type: "element"});
+    })();
+    testSoftNavigation({
+      pushState: null,
+      clicks: 2,
+      addContent: async () => {
+        // Add an LCP element.
+        await new Promise(resolve => {
+          const p = addTextParagraphToMain("Lorem Ipsum", /*element_timing=*/"first_lcp" + counter);
+          p.id = "first_lcp" + counter;
+          (new PerformanceObserver(resolve)).observe({type: "element"});
+        });
+        if(counter) {
+          first_lcp_painted();
+          // Wait for the unrelated LCP to be painted.
+          await new Promise(r => { second_lcp_painted = r; });
+        }
+        const url = URL + "?" + counter;
+        history.pushState({}, '', url);
+      },
+      link: link,
+      validate: async () => {
+        const lcps = await getLcpEntries();
+        const ref_counter = counter-1;
+        assert_equals(lcps.length, 2 + ref_counter, "Got 2 LCP entries");
+        assert_equals(lcps[lcps.length - 1].id, "first_lcp" + ref_counter, "Got the first LCP");
+      },
+      test: "Second soft navigation text LCP discovered between user " +
+            "interaction and soft navigation detection are properly " +
+            "reported, while unrelated LCPs are ignored during that time. " +
+            "As a side effect, we also test element timing."});
+  </script>
+</body>
+</html>
+
+
+
+
diff --git a/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection.tentative.html b/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection.tentative.html
new file mode 100644
index 00000000000..11e82e539ff
--- /dev/null
+++ b/tests/wpt/tests/soft-navigation-heuristics/text-lcp-before-detection.tentative.html
@@ -0,0 +1,55 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<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/soft-navigation-helper.js"></script>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+</head>
+<body>
+  <main id=main>
+    <div>
+      <a id=link><img src="/images/lcp-256x256.png" id="img"></a>
+    </div>
+  </main>
+  <script>
+    const link = document.getElementById("link");
+    let first_lcp_painted;
+    let second_lcp_painted;
+    (async () => {
+      await new Promise(r => { first_lcp_painted = r; });
+      addTextParagraphToMain("LOREM IPSUMR", "no lcp");
+      (new PerformanceObserver(second_lcp_painted)).observe({type: "element"});
+    })();
+    testSoftNavigation({
+      pushState: null,
+      addContent: async () => {
+        // Add an LCP element.
+        await new Promise(resolve => {
+          const p = addTextParagraphToMain("Lorem Ipsum", /*element_timing=*/"first_lcp");
+          p.id = "first_lcp";
+          (new PerformanceObserver(resolve)).observe({type: "element"});
+        });
+        first_lcp_painted();
+        // Wait for the unrelated LCP to be painted.
+        await new Promise(r => { second_lcp_painted = r; });
+        const url = URL + "?" + counter;
+        history.pushState({}, '', url);
+      },
+      link: link,
+      validate: async () => {
+        const lcps = await getLcpEntries();
+        assert_equals(lcps.length, 2, "Got 2 LCP entries");
+        assert_equals(lcps[lcps.length - 1].id, "first_lcp", "Got the first LCP");
+      },
+      test: "Text LCP discovered between user interaction and soft " +
+            "navigation detection are properly reported, while unrelated " +
+            "LCPs are ignored during that time. As a side effect, we also " +
+            "test element timing."});
+  </script>
+</body>
+</html>
+
diff --git a/tests/wpt/tests/speculation-rules/prerender/local-storage.html b/tests/wpt/tests/speculation-rules/prerender/local-storage.html
index 59ba3a6d79c..73f760cfb08 100644
--- a/tests/wpt/tests/speculation-rules/prerender/local-storage.html
+++ b/tests/wpt/tests/speculation-rules/prerender/local-storage.html
@@ -1,5 +1,7 @@
 <!DOCTYPE html>
 <title>Same-origin prerendering can access localStorage</title>
+<meta name="variant" content="?target_hint=_self">
+<meta name="variant" content="?target_hint=_blank">
 <meta name="timeout" content="long">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
@@ -28,8 +30,12 @@ promise_test(async t => {
     }, { once: true });
   });
 
+  const opt = {};
+  const init_opt = {};
+  const rule_extras = {'target_hint': getTargetHint()};
+
   window.localStorage.setItem('initial', uid1);
-  const {exec} = await create_prerendered_page(t);
+  const {exec} = await create_prerendered_page(t, opt, init_opt, rule_extras);
   const result = await exec(uid2 => {
     window.localStorage.setItem('prerender', uid2);
     return window.localStorage.getItem('initial');
diff --git a/tests/wpt/tests/speculation-rules/prerender/prerender-while-prerender.html b/tests/wpt/tests/speculation-rules/prerender/prerender-while-prerender.html
index e04fafbfa8d..8aa80baf525 100644
--- a/tests/wpt/tests/speculation-rules/prerender/prerender-while-prerender.html
+++ b/tests/wpt/tests/speculation-rules/prerender/prerender-while-prerender.html
@@ -12,47 +12,35 @@
 <script>
 setup(() => assertSpeculationRulesIsSupported());
 
+// We attempted to write this test using `RemoteContextHelper`. See
+// https://github.com/web-platform-tests/wpt/blob/23ed0c7015082f21dd29dd09a545e2979dc3e08c/speculation-rules/prerender/prerender-while-prerender.html.
+//
+// However, that ended up being flaky in Chromium. See
+// https://bugs.chromium.org/p/chromium/issues/detail?id=1517319.
+//
+// We're unsure yet if that flakiness was due to a test bug or an implementation
+// bug. In case it is due to a test bug, we are currently trying the following
+// uglier `PrerenderChannel` version. If it is still flaky, then probably it is
+// an implementation bug, and we can revert to the prettier
+// `RemoteContextHelper` version.
+
 promise_test(async t => {
-  const rcHelper = new RemoteContextHelper();
-  const referrerRC = await rcHelper.addWindow(undefined, { features: 'noopener' });
-  const outerPrerenderedRC = await addPrerenderRC(referrerRC);
+  const uid = token();
+  const channel = new PrerenderChannel("result", uid);
+  const result = new Promise(r => channel.addEventListener("message", e => r(e.data)));
 
-  // Double-check we're set up correctly.
-  assert_equals(await outerPrerenderedRC.executeScript(() => document.prerendering), true);
+  window.open(
+    `resources/prerender-while-prerender-initiator.html?uid=${uid}`,
+    "_blank",
+    "noopener"
+  );
 
-  const innerPrerenderRC = await addPrerenderRC(outerPrerenderedRC);
+  assert_equals(
+    await result,
+    false,
+    "document.prerendering in the inner page must be false"
+  );
 
-  // Do not `await`. Since (per spec) prerendering is not allowed inside
-  // a prerender, there is not actually a real `RemoteContextHelper`
-  // representing the inner prerender at this time, since there is no
-  // prerender running. Instead, the `RemoteContextHelper` it is waiting
-  // for something to appear at its URL, which will happen later. At
-  // that time, the script will run. But `await`ing the script now would
-  // just block, since it will not run until that later point.
-  const scriptResultInInner = innerPrerenderRC.executeScript(() => document.prerendering);
-
-  // When the outer prerender is activated, inside the `prerenderingchange`
-  // event, attempt to activate the inner prerender. In reality, this will just
-  // perform a normal navigation to `innerPrerenderRC.url`.
-  await outerPrerenderedRC.executeScript(innerPrerenderRCURL => {
-    document.addEventListener("prerenderingchange", () => {
-      // executeScriptToNavigate is normally an implementation detail of the
-      // RemoteContextHelper framework, used by, e.g., `rch.navigateTo()`.
-      // However, because we're setting up an event listener to navigate later,
-      // we can't call `rch.navigateTo()`, and so need to call it directly.
-      executeScriptToNavigate(innerPrerenderRCURL => {
-        location.href = innerPrerenderRCURL;
-      }, [innerPrerenderRCURL]);
-    });
-  }, [innerPrerenderRC.url]);
-
-  // Now that everything is set up, activate the outer prerender.
-  await activatePrerenderRC(referrerRC, outerPrerenderedRC);
-
-  // Testing that this is false means two things:
-  // - The inner prerender attempt did not happen; we did a normal navigation
-  //   instead.
-  // - Nothing crashed or got confused.
-  assert_equals(await scriptResultInInner, false);
+  channel.close();
 }, "Prerendering inside a prerender doesn't work, and navigating inside prerenderingchange is fine");
 </script>
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-initiator.html b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-initiator.html
new file mode 100644
index 00000000000..17642715818
--- /dev/null
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-initiator.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Prerender while prerendering test: referrer page, opened in a window</title>
+<script src="utils.js"></script>
+
+<script type="module">
+const params = new URLSearchParams(location.search);
+const uid = params.get("uid");
+const outerURL = `prerender-while-prerender-outer.html?uid=${uid}`;
+
+startPrerendering(outerURL);
+
+const channel = new PrerenderChannel("start-test", uid);
+await new Promise(r => channel.addEventListener("message", r));
+channel.close();
+
+location.href = outerURL;
+</script>
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-inner.html b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-inner.html
new file mode 100644
index 00000000000..60b6c64dedc
--- /dev/null
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-inner.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Prerender while prerendering test: inner maybe-prerendered page</title>
+
+<script>
+"use strict";
+window.onFirstScriptExecutedPrerendering = document.prerendering;
+</script>
+
+<script src="utils.js"></script>
+
+<script type="module">
+const params = new URLSearchParams(location.search);
+const uid = params.get("uid");
+
+const channel = new PrerenderChannel("result", uid);
+channel.postMessage(window.onFirstScriptExecutedPrerendering);
+channel.close();
+</script>
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-outer.html b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-outer.html
new file mode 100644
index 00000000000..313c34667f4
--- /dev/null
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/prerender-while-prerender-outer.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Prerender while prerendering test: outer prerendered page</title>
+<script src="utils.js"></script>
+
+<script type="module">
+const params = new URLSearchParams(location.search);
+const uid = params.get("uid");
+const innerURL = `prerender-while-prerender-inner.html?uid=${uid}`;
+
+startPrerendering(innerURL);
+// Wait 5 seconds for any potential prerender to start and get to the point
+// where it would send a message that would cause a failure.
+await new Promise(r => setTimeout(r, 5_000));
+
+document.addEventListener("prerenderingchange", () => {
+  location.href = innerURL;
+});
+
+const channel = new PrerenderChannel("start-test", uid);
+channel.postMessage("ready to start");
+channel.close();
+</script>
diff --git a/tests/wpt/tests/storage-access-api/helpers.js b/tests/wpt/tests/storage-access-api/helpers.js
index 1ca0e121c6a..0fd5d814dbb 100644
--- a/tests/wpt/tests/storage-access-api/helpers.js
+++ b/tests/wpt/tests/storage-access-api/helpers.js
@@ -264,6 +264,14 @@ function FetchFromFrame(frame, url) {
     { command: "cors fetch", url }, frame.contentWindow);
 }
 
+// Makes a subresource request to the provided host in the given frame with
+// the mode set to 'no-cors'
+function NoCorsSubresourceCookiesFromFrame(frame, host) {
+  const url = `${host}/storage-access-api/resources/echo-cookie-header.py`;
+  return PostMessageAndAwaitReply(
+    { command: "no-cors fetch", url }, frame.contentWindow);
+}
+
 // Tries to set storage access policy, ignoring any errors.
 //
 // Note: to discourage the writing of tests that assume unpartitioned cookie
@@ -295,4 +303,4 @@ function MessageWorker(frame, message = {}) {
 function ReadCookiesFromWebSocketConnection(frame, origin) {
   return PostMessageAndAwaitReply(
    { command: "get_cookie_via_websocket", origin}, frame.contentWindow);
-}
\ No newline at end of file
+}
diff --git a/tests/wpt/tests/storage-access-api/requestStorageAccess-cross-site-sibling-iframes.sub.https.window.js b/tests/wpt/tests/storage-access-api/requestStorageAccess-cross-site-sibling-iframes.sub.https.window.js
index 06ee80e5a08..528b1616368 100644
--- a/tests/wpt/tests/storage-access-api/requestStorageAccess-cross-site-sibling-iframes.sub.https.window.js
+++ b/tests/wpt/tests/storage-access-api/requestStorageAccess-cross-site-sibling-iframes.sub.https.window.js
@@ -75,6 +75,8 @@
     assert_true(cookieStringHasCookie("foo", "bar", await FetchSubresourceCookiesFromFrame(crossSiteFrame, wwwAlt)),"crossSiteFrame making same-origin subresource request can access cookies.");
 
     assert_false(cookieStringHasCookie("foo", "bar",  await FetchSubresourceCookiesFromFrame(crossOriginFrame, wwwAlt)), "crossOriginFrame making cross-site subresource request to sibling iframe's host should not include cookies.");
+
+    assert_false(cookieStringHasCookie("foo", "bar", await NoCorsSubresourceCookiesFromFrame(crossOriginFrame, www)), "crossSiteFrame making no-cors cross-site subresource request to sibling iframe's host should not include cookies.");
     assert_false(cookieStringHasCookie("cookie", "monster", await FetchSubresourceCookiesFromFrame(crossSiteFrame, www)),"crossSiteFrame making cross-site subresource request to sibling iframe's host should not include cookies.");
 
   }, "Cross-site sibling iframes should not be able to take advantage of the existing permission grant requested by others.");
diff --git a/tests/wpt/tests/storage-access-api/resources/embedded_responder.js b/tests/wpt/tests/storage-access-api/resources/embedded_responder.js
index 4a956c5f394..bc13c7e7e82 100644
--- a/tests/wpt/tests/storage-access-api/resources/embedded_responder.js
+++ b/tests/wpt/tests/storage-access-api/resources/embedded_responder.js
@@ -75,6 +75,9 @@ window.addEventListener("message", async (event) => {
     case "cors fetch":
       reply(await fetch(event.data.url, {mode: 'cors', credentials: 'include'}).then((resp) => resp.text()));
       break;
+    case "no-cors fetch":
+      reply(await fetch(event.data.url, {mode: 'no-cors', credentials: 'include'}).then((resp) => resp.text()));
+      break;
     case "start_dedicated_worker":
       worker = new Worker("embedded_worker.js");
       reply(undefined);
diff --git a/tests/wpt/tests/tools/ci/manifest_build.py b/tests/wpt/tests/tools/ci/manifest_build.py
index 6d93a352583..15b8679f009 100644
--- a/tests/wpt/tests/tools/ci/manifest_build.py
+++ b/tests/wpt/tests/tools/ci/manifest_build.py
@@ -9,6 +9,9 @@ import tempfile
 
 import requests
 
+from pathlib import Path
+
+
 here = os.path.abspath(os.path.dirname(__file__))
 wpt_root = os.path.abspath(os.path.join(here, os.pardir, os.pardir))
 
@@ -39,6 +42,10 @@ def create_manifest(path):
     run(["./wpt", "manifest", "-p", path])
 
 
+def create_web_feature_manifest(path):
+    run(["./wpt", "web-features-manifest", "-p", path])
+
+
 def compress_manifest(path):
     for args in [["gzip", "-k", "-f", "--best"],
                  ["bzip2", "-k", "-f", "--best"],
@@ -108,7 +115,20 @@ def get_pr(owner, repo, sha):
     return pr["number"]
 
 
-def create_release(manifest_path, owner, repo, sha, tag, body):
+def get_file_upload_details(manifest_path, sha):
+    """
+    For a given file, generate details used to upload to GitHub.
+    """
+    path = Path(manifest_path)
+    stem = path.stem
+    extension = path.suffix
+    upload_filename_prefix = f"{stem}-{sha}{extension}"
+    upload_label_prefix = path.name
+    upload_desc = f"{stem.title()} upload"
+    return upload_filename_prefix, upload_label_prefix, upload_desc
+
+
+def create_release(manifest_file_paths, owner, repo, sha, tag, body):
     logger.info(f"Creating a release for tag='{tag}', target_commitish='{sha}'")
     create_url = f"https://api.github.com/repos/{owner}/{repo}/releases"
     create_data = {"tag_name": tag,
@@ -124,20 +144,22 @@ def create_release(manifest_path, owner, repo, sha, tag, body):
     upload_url = create_resp["upload_url"].split("{", 1)[0]
 
     upload_exts = [".gz", ".bz2", ".zst"]
-    for upload_ext in upload_exts:
-        upload_filename = f"MANIFEST-{sha}.json{upload_ext}"
-        params = {"name": upload_filename,
-                  "label": "MANIFEST.json%s" % upload_ext}
+    for manifest_path in manifest_file_paths:
+        upload_filename_prefix, upload_label_prefix, upload_desc = get_file_upload_details(manifest_path, sha)
+        for upload_ext in upload_exts:
+            upload_filename = f"{upload_filename_prefix}{upload_ext}"
+            params = {"name": upload_filename,
+                    "label": f"{upload_label_prefix}{upload_ext}"}
 
-        with open(f"{manifest_path}{upload_ext}", "rb") as f:
-            upload_data = f.read()
+            with open(f"{manifest_path}{upload_ext}", "rb") as f:
+                upload_data = f.read()
 
-        logger.info("Uploading %s bytes" % len(upload_data))
+            logger.info("Uploading %s bytes" % len(upload_data))
 
-        upload_resp = request(upload_url, "Manifest upload", data=upload_data, params=params,
-                              headers={'Content-Type': 'application/octet-stream'})
-        if not upload_resp:
-            return False
+            upload_resp = request(upload_url, upload_desc, data=upload_data, params=params,
+                                headers={'Content-Type': 'application/octet-stream'})
+            if not upload_resp:
+                return False
 
     release_id = create_resp["id"]
     edit_url = f"https://api.github.com/repos/{owner}/{repo}/releases/{release_id}"
@@ -169,10 +191,13 @@ def main():
     dry_run = should_dry_run()
 
     manifest_path = os.path.join(tempfile.mkdtemp(), "MANIFEST.json")
+    web_features_manifest_path = os.path.join(tempfile.mkdtemp(), "WEB_FEATURES_MANIFEST.json")
 
     create_manifest(manifest_path)
+    create_web_feature_manifest(web_features_manifest_path)
 
     compress_manifest(manifest_path)
+    compress_manifest(web_features_manifest_path)
 
     owner, repo = os.environ["GITHUB_REPOSITORY"].split("/", 1)
 
@@ -188,7 +213,8 @@ def main():
         return Status.FAIL
     tag_name = "merge_pr_%s" % pr
 
-    if not create_release(manifest_path, owner, repo, head_rev, tag_name, body):
+    manifest_paths = [manifest_path, web_features_manifest_path]
+    if not create_release(manifest_paths, owner, repo, head_rev, tag_name, body):
         return Status.FAIL
 
     return Status.SUCCESS
diff --git a/tests/wpt/tests/tools/ci/requirements_build.txt b/tests/wpt/tests/tools/ci/requirements_build.txt
index 34baec00a5e..54f21efbd98 100644
--- a/tests/wpt/tests/tools/ci/requirements_build.txt
+++ b/tests/wpt/tests/tools/ci/requirements_build.txt
@@ -1,5 +1,5 @@
 cairocffi==1.6.1
 fonttools==4.47.2
 genshi==0.7.7
-jinja2==3.1.2
+jinja2==3.1.3
 pyyaml==6.0.1
diff --git a/tests/wpt/tests/tools/lint/lint.py b/tests/wpt/tests/tools/lint/lint.py
index cf164b6820f..e3a555413b8 100644
--- a/tests/wpt/tests/tools/lint/lint.py
+++ b/tests/wpt/tests/tools/lint/lint.py
@@ -603,7 +603,7 @@ def check_global_metadata(value: bytes) -> Iterable[Tuple[Type[rules.Rule], Tupl
 
 
 def check_script_metadata(repo_root: Text, path: Text, f: IO[bytes]) -> List[rules.Error]:
-    if path.endswith((".worker.js", ".any.js")):
+    if path.endswith((".window.js", ".worker.js", ".any.js")):
         meta_re = js_meta_re
         broken_metadata = broken_js_metadata
     elif path.endswith(".py"):
@@ -614,7 +614,7 @@ def check_script_metadata(repo_root: Text, path: Text, f: IO[bytes]) -> List[rul
 
     done = False
     errors = []
-    for idx, line in enumerate(f):
+    for line_no, line in enumerate(f, 1):
         assert isinstance(line, bytes), line
 
         m = meta_re.match(line)
@@ -622,29 +622,32 @@ def check_script_metadata(repo_root: Text, path: Text, f: IO[bytes]) -> List[rul
             key, value = m.groups()
             if key == b"global":
                 for rule_class, context in check_global_metadata(value):
-                    errors.append(rule_class.error(path, context, idx + 1))
+                    errors.append(rule_class.error(path, context, line_no))
             elif key == b"timeout":
                 if value != b"long":
                     errors.append(rules.UnknownTimeoutMetadata.error(path,
-                                                                     line_no=idx + 1))
+                                                                     line_no=line_no))
             elif key == b"variant":
                 if is_variant_malformed(value.decode()):
                     value = f"{path} `META: variant=...` value"
-                    errors.append(rules.MalformedVariant.error(path, (value,), idx + 1))
-            elif key not in (b"title", b"script", b"quic"):
-                errors.append(rules.UnknownMetadata.error(path,
-                                                          line_no=idx + 1))
+                    errors.append(rules.MalformedVariant.error(path, (value,), line_no))
+            elif key == b"script":
+                if value == b"/resources/testharness.js":
+                    errors.append(rules.MultipleTestharness.error(path, line_no=line_no))
+                elif value == b"/resources/testharnessreport.js":
+                    errors.append(rules.MultipleTestharnessReport.error(path, line_no=line_no))
+            elif key not in (b"title", b"quic"):
+                errors.append(rules.UnknownMetadata.error(path, line_no=line_no))
         else:
             done = True
 
         if done:
             if meta_re.match(line):
-                errors.append(rules.StrayMetadata.error(path, line_no=idx + 1))
+                errors.append(rules.StrayMetadata.error(path, line_no=line_no))
             elif meta_re.search(line):
-                errors.append(rules.IndentedMetadata.error(path,
-                                                           line_no=idx + 1))
+                errors.append(rules.IndentedMetadata.error(path, line_no=line_no))
             elif broken_metadata.search(line):
-                errors.append(rules.BrokenMetadata.error(path, line_no=idx + 1))
+                errors.append(rules.BrokenMetadata.error(path, line_no=line_no))
 
     return errors
 
diff --git a/tests/wpt/tests/tools/lint/rules.py b/tests/wpt/tests/tools/lint/rules.py
index 471ca06a49a..c7b3a59b19e 100644
--- a/tests/wpt/tests/tools/lint/rules.py
+++ b/tests/wpt/tests/tools/lint/rules.py
@@ -156,8 +156,10 @@ class MultipleTestharness(Rule):
     name = "MULTIPLE-TESTHARNESS"
     description = "More than one `<script src='/resources/testharness.js'>`"
     to_fix = """
-        ensure each test has only one `<script
-        src='/resources/testharnessreport.js'>` instance
+        Ensure each test has only one `<script
+        src='/resources/testharness.js'>` instance.
+        For `.js` tests, remove `// META: script=/resources/testharness.js`,
+        which wptserve already adds to the boilerplate markup.
     """
 
 
@@ -181,6 +183,12 @@ class MissingTestharnessReport(Rule):
 class MultipleTestharnessReport(Rule):
     name = "MULTIPLE-TESTHARNESSREPORT"
     description = "More than one `<script src='/resources/testharnessreport.js'>`"
+    to_fix = """
+        Ensure each test has only one `<script
+        src='/resources/testharnessreport.js'>` instance.
+        For `.js` tests, remove `// META: script=/resources/testharnessreport.js`,
+        which wptserve already adds to the boilerplate markup.
+    """
 
 
 class VariantMissing(Rule):
diff --git a/tests/wpt/tests/tools/lint/tests/test_file_lints.py b/tests/wpt/tests/tools/lint/tests/test_file_lints.py
index b48549c1313..f2ebcd9080a 100644
--- a/tests/wpt/tests/tools/lint/tests/test_file_lints.py
+++ b/tests/wpt/tests/tools/lint/tests/test_file_lints.py
@@ -975,6 +975,8 @@ def test_css_missing_file_tentative():
     (b"""// META: foobar\n""", (1, "BROKEN-METADATA")),
     (b"""// META: foo=bar\n""", (1, "UNKNOWN-METADATA")),
     (b"""// META: timeout=bar\n""", (1, "UNKNOWN-TIMEOUT-METADATA")),
+    (b"""// META: script=/resources/testharness.js""", (1, "MULTIPLE-TESTHARNESS")),
+    (b"""// META: script=/resources/testharnessreport.js""", (1, "MULTIPLE-TESTHARNESSREPORT")),
 ])
 def test_script_metadata(filename, input, error):
     errors = check_file_contents("", filename, io.BytesIO(input))
@@ -991,6 +993,10 @@ def test_script_metadata(filename, input, error):
             "MALFORMED-VARIANT": (
                 f"{filename} `META: variant=...` value must be a non empty "
                 "string and start with '?' or '#'"),
+            "MULTIPLE-TESTHARNESS": (
+                "More than one `<script src='/resources/testharness.js'>`"),
+            "MULTIPLE-TESTHARNESSREPORT": (
+                "More than one `<script src='/resources/testharnessreport.js'>`"),
         }
         assert errors == [
             (kind,
diff --git a/tests/wpt/tests/tools/manifest/sourcefile.py b/tests/wpt/tests/tools/manifest/sourcefile.py
index 832968e6323..23aa7f491fc 100644
--- a/tests/wpt/tests/tools/manifest/sourcefile.py
+++ b/tests/wpt/tests/tools/manifest/sourcefile.py
@@ -29,6 +29,10 @@ from .item import (ConformanceCheckerTest,
                    WebDriverSpecTest)
 from .utils import cached_property
 
+# Cannot do `from ..metadata.webfeatures.schema import WEB_FEATURES_YML_FILENAME`
+# because relative import beyond toplevel throws *ImportError*!
+from metadata.webfeatures.schema import WEB_FEATURES_YML_FILENAME  # type: ignore
+
 wd_pattern = "*.py"
 js_meta_re = re.compile(br"//\s*META:\s*(\w*)=(.*)$")
 python_meta_re = re.compile(br"#\s*META:\s*(\w*)=(.*)$")
@@ -302,6 +306,7 @@ class SourceFile:
         return (self.is_dir() or
                 self.name_prefix("MANIFEST") or
                 self.filename == "META.yml" or
+                self.filename == WEB_FEATURES_YML_FILENAME or
                 self.filename.startswith(".") or
                 self.filename.endswith(".headers") or
                 self.filename.endswith(".ini") or
diff --git a/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py b/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
index 298e480c142..8a9d8c36ee1 100644
--- a/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
+++ b/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
@@ -42,6 +42,8 @@ def items(s):
     "crashtests/foo.html.ini",
     "css/common/test.html",
     "css/CSS2/archive/test.html",
+    "css/WEB_FEATURES.yml",
+    "css/META.yml",
 ])
 def test_name_is_non_test(rel_path):
     s = create(rel_path)
diff --git a/tests/wpt/tests/tools/serve/serve.py b/tests/wpt/tests/tools/serve/serve.py
index 5ba20e04580..116a98c0fcd 100644
--- a/tests/wpt/tests/tools/serve/serve.py
+++ b/tests/wpt/tests/tools/serve/serve.py
@@ -424,6 +424,17 @@ class ShadowRealmHandler(HtmlWrapperHandler):
 (async function() {
   const r = new ShadowRealm();
   r.evaluate("globalThis.self = globalThis; undefined;");
+  r.evaluate(`func => {
+    globalThis.fetch_json = (resource) => {
+      const thenMethod = func(resource);
+      return new Promise((resolve, reject) => thenMethod((s) => resolve(JSON.parse(s)), reject));
+    };
+  }`)((resource) => function (resolve, reject) {
+    fetch(resource).then(res => res.text(), String).then(resolve, reject);
+  });
+  r.evaluate(`s => {
+    globalThis.location = { search: s };
+  }`)(location.search);
   await new Promise(r.evaluate(`
     (resolve, reject) => {
       (async () => {
diff --git a/tests/wpt/tests/tools/web_features/MANIFEST_SCHEMA.json b/tests/wpt/tests/tools/web_features/MANIFEST_SCHEMA.json
new file mode 100644
index 00000000000..9fe4b68eb45
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/MANIFEST_SCHEMA.json
@@ -0,0 +1,35 @@
+{
+  "$schema":"http://json-schema.org/draft-06/schema#",
+  "$ref":"#/definitions/File",
+  "definitions":{
+    "File":{
+      "type":"object",
+      "additionalProperties":false,
+      "properties":{
+        "version":{
+          "type":"integer",
+          "description":"Schema version of the file.",
+          "enum":[
+            1
+          ]
+        },
+        "data":{
+          "type":"object",
+          "description":"High level container for the data. Object key is the web-features identifier.",
+          "additionalProperties":{
+            "type":"array",
+            "items":{
+              "type":"string",
+              "description":"The url field in tools.manifest.item.URLManifestItem"
+            }
+          }
+        }
+      },
+      "required":[
+        "data",
+        "version"
+      ],
+      "title":"File"
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/wpt/tests/tools/web_features/__init__.py b/tests/wpt/tests/tools/web_features/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/tools/web_features/commands.json b/tests/wpt/tests/tools/web_features/commands.json
new file mode 100644
index 00000000000..9a54b1b00da
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/commands.json
@@ -0,0 +1,12 @@
+{
+  "web-features-manifest": {
+    "path": "manifest.py",
+    "script": "main",
+    "parser": "create_parser",
+    "help": "Create the WEB_FEATURES_MANIFEST.json",
+    "virtualenv": true,
+    "requirements": [
+      "../metadata/yaml/requirements.txt"
+    ]
+  }
+}
diff --git a/tests/wpt/tests/tools/web_features/manifest.py b/tests/wpt/tests/tools/web_features/manifest.py
new file mode 100644
index 00000000000..3a4ec1a6f27
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/manifest.py
@@ -0,0 +1,208 @@
+#!/usr/bin/env python3
+
+import argparse
+import json
+import logging
+import os
+
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Any, List, Optional
+
+from ..manifest.item import SupportFile
+from ..manifest.sourcefile import SourceFile
+from ..metadata.yaml.load import load_data_to_dict
+from ..web_features.web_feature_map import WebFeatureToTestsDirMapper, WebFeaturesMap
+from .. import localpaths
+from ..metadata.webfeatures.schema import WEB_FEATURES_YML_FILENAME, WebFeaturesFile
+
+"""
+This command generates a manifest file containing a mapping of web-feature
+identifiers to test paths.
+
+The web-feature identifiers are sourced from https://github.com/web-platform-dx/web-features.
+They are used in WEB_FEATURES.yml files located throughout the WPT source code.
+Each file defines which test files correspond to a specific identifier.
+Refer to RFC 163 (https://github.com/web-platform-tests/rfcs/pull/163) for more
+file details.
+
+This command processes all WEB_FEATURES.yml files, extracts the list of test
+paths from the test files, and writes them to a manifest file. The manifest
+file maps web-feature identifiers to their corresponding test paths.
+
+The file written is a JSON file. An example file looks like:
+
+{
+    "version": 1,
+    "data": {
+        "async-clipboard": [
+            "/clipboard-apis/async-custom-formats-write-fail.tentative.https.html",
+            "/clipboard-apis/async-custom-formats-write-read-web-prefix.tentative.https.html"
+        ],
+        "idle-detection": [
+            "/idle-detection/basics.tentative.https.window.html",
+            "/idle-detection/idle-detection-allowed-by-permissions-policy-attribute-redirect-on-load.https.sub.html"
+        ]
+    }
+}
+
+
+The JSON Schema for the file format can be found at MANIFEST_SCHEMA.json
+
+This file does not follow the same format as the original manifest file,
+MANIFEST.json.
+"""
+
+logger = logging.getLogger(__name__)
+
+MANIFEST_FILE_NAME = "WEB_FEATURES_MANIFEST.json"
+
+
+def abs_path(path: str) -> str:
+    return os.path.abspath(os.path.expanduser(path))
+
+def create_parser() -> argparse.ArgumentParser:
+    """
+    Creates an argument parser for the script.
+
+    Returns:
+        argparse.ArgumentParser: The configured argument parser.
+    """
+    parser = argparse.ArgumentParser(
+        description="Maps tests to web-features within a repo root."
+    )
+    parser.add_argument(
+        "-p", "--path", type=abs_path, help="Path to manifest file.")
+    return parser
+
+
+def find_all_test_files_in_dir(root_dir: str, rel_dir_path: str, url_base: str) -> List[SourceFile]:
+    """
+    Finds all test files within a given directory.
+
+    Ignores any SourceFiles that are marked as non_test or the type
+    is SupportFile.item_type
+
+    Args:
+        root_dir (str): The root directory of the repository.
+        rel_dir_path (str): The relative path of the directory to search.
+        url_base (str): Base url to use as the mount point for tests in this manifest.
+
+    Returns:
+        List[SourceFile]: A list of SourceFile objects representing the found test files.
+    """
+    rv: List[SourceFile] = []
+    full_dir_path = os.path.join(root_dir, rel_dir_path)
+    for file in os.listdir(full_dir_path):
+        full_path = os.path.join(full_dir_path, file)
+        rel_file_path = os.path.relpath(full_path, root_dir)
+        source_file = SourceFile(root_dir, rel_file_path, url_base)
+        if not source_file.name_is_non_test and source_file.type != SupportFile.item_type:
+            rv.append(source_file)
+    return rv
+
+@dataclass
+class CmdConfig():
+    """
+    Configuration for the command-line options.
+    """
+
+    repo_root: str  # The root directory of the WPT repository
+    url_base: str  # Base URL used when converting file paths to urls
+
+
+def map_tests_to_web_features(
+        cmd_cfg: CmdConfig,
+        rel_dir_path: str,
+        result: WebFeaturesMap,
+        prev_inherited_features: List[str] = []) -> None:
+    """
+    Recursively maps tests to web-features within a directory structure.
+
+    Args:
+        cmd_cfg (CmdConfig): The configuration for the command-line options.
+        rel_dir_path (str): The relative path of the directory to process.
+        result (WebFeaturesMap): The object to store the mapping results.
+        prev_inherited_features (List[str], optional): A list of inherited web-features from parent directories. Defaults to [].
+    """
+    # Sometimes it will add a . at the beginning. Let's resolve the absolute path to disambiguate.
+    # current_path = Path(os.path.join(cmd_cfg.repo_root, rel_dir_path)).resolve()
+    current_dir = str(Path(os.path.join(cmd_cfg.repo_root, rel_dir_path)).resolve())
+
+    # Create a copy that may be built upon or cleared during this iteration.
+    inherited_features = prev_inherited_features.copy()
+
+    rel_dir_path = os.path.relpath(current_dir, cmd_cfg.repo_root)
+
+    web_feature_yml_full_path = os.path.join(current_dir, WEB_FEATURES_YML_FILENAME)
+    web_feature_file: Optional[WebFeaturesFile] = None
+    if os.path.isfile(web_feature_yml_full_path):
+        try:
+            web_feature_file = WebFeaturesFile(load_data_to_dict(
+                open(web_feature_yml_full_path, "rb")))
+        except Exception as e:
+            raise e
+
+    WebFeatureToTestsDirMapper(
+        find_all_test_files_in_dir(cmd_cfg.repo_root, rel_dir_path, cmd_cfg.url_base),
+        web_feature_file
+    ).run(result, inherited_features)
+
+    sub_dirs = [f for f in os.listdir(current_dir) if os.path.isdir(os.path.join(current_dir, f))]
+    for sub_dir in sub_dirs:
+        map_tests_to_web_features(
+            cmd_cfg,
+            os.path.join(rel_dir_path, sub_dir),
+            result,
+            inherited_features
+        )
+
+class WebFeatureManifestEncoder(json.JSONEncoder):
+    """
+    Custom JSON encoder.
+
+    WebFeaturesMap contains a dictionary where the value is of type set.
+    Sets cannot serialize to JSON by default. This encoder handles that by
+    calling WebFeaturesMap's to_dict() method.
+    """
+    def default(self, obj: Any) -> Any:
+        if isinstance(obj, WebFeaturesMap):
+            return obj.to_dict()
+        return super().default(obj)
+
+
+def write_manifest_file(path: str, web_features_map: WebFeaturesMap) -> None:
+    """
+    Serializes the WebFeaturesMap to a JSON manifest file at the specified path.
+
+    The generated JSON file adheres to the schema defined in the "MANIFEST_SCHEMA.json" file. The
+    serialization process uses the custom `WebFeatureManifestEncoder` to ensure correct formatting.
+
+    Args:
+        path (str): The file path where the manifest file will be created or overwritten.
+        web_features_map (WebFeaturesMap): The object containing the mapping between
+                                           web-features and their corresponding test paths.
+    """
+    with open(path, "w") as outfile:
+        outfile.write(
+            json.dumps(
+                {
+                    "version": 1,
+                    "data": web_features_map
+                }, cls=WebFeatureManifestEncoder))
+
+
+def main(venv: Any = None, **kwargs: Any) -> int:
+
+    assert logger is not None
+
+    repo_root = localpaths.repo_root
+    url_base = "/"
+    path = kwargs.get("path") or os.path.join(repo_root, MANIFEST_FILE_NAME)
+
+    cmd_cfg = CmdConfig(repo_root, url_base)
+    feature_map = WebFeaturesMap()
+    map_tests_to_web_features(cmd_cfg, "", feature_map)
+    write_manifest_file(path, feature_map)
+
+    return 0
diff --git a/tests/wpt/tests/tools/web_features/tests/__init__.py b/tests/wpt/tests/tools/web_features/tests/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/tools/web_features/tests/test_manifest.py b/tests/wpt/tests/tools/web_features/tests/test_manifest.py
new file mode 100644
index 00000000000..8b656876ff3
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/tests/test_manifest.py
@@ -0,0 +1,260 @@
+# mypy: ignore-errors
+
+import json
+import os
+from jsonschema import validate
+from unittest.mock import ANY, Mock, call, mock_open, patch
+
+import pytest
+
+from ..manifest import create_parser, find_all_test_files_in_dir, main, map_tests_to_web_features, write_manifest_file, CmdConfig
+from ..web_feature_map import WebFeatureToTestsDirMapper, WebFeaturesMap
+from ...metadata.webfeatures.schema import WEB_FEATURES_YML_FILENAME
+from ...manifest.sourcefile import SourceFile
+from ...manifest.item import SupportFile, URLManifestItem
+from ... import localpaths
+
+
+@patch("os.listdir")
+@patch("tools.web_features.manifest.SourceFile")
+def test_find_all_test_files_in_dir(mock_source_file_class, mock_listdir):
+    mock_listdir.return_value = ["test1.html", "support.py", "test2.html", "test3.html"]
+
+    def create_source_file_mock(root_dir, rel_file_path, separator):
+        source_file = Mock(spec=SourceFile)
+        if rel_file_path.endswith("support.py"):
+            source_file.name_is_non_test = True
+            source_file.type = SupportFile.item_type
+        else:
+            source_file.name_is_non_test = False
+        return source_file
+
+    mock_source_file_class.side_effect = create_source_file_mock
+
+    test_files = find_all_test_files_in_dir("root_dir", "rel_dir_path", "/")
+
+    # Assert calls to the mocked constructor with expected arguments
+    mock_source_file_class.assert_has_calls([
+        call("root_dir", os.path.join("rel_dir_path", "test1.html"), "/"),
+        call("root_dir", os.path.join("rel_dir_path", "support.py"), "/"),
+        call("root_dir", os.path.join("rel_dir_path", "test2.html"), "/"),
+        call("root_dir", os.path.join("rel_dir_path", "test3.html"), "/"),
+    ])
+    assert mock_source_file_class.call_count == 4
+
+
+    # Assert attributes of the resulting test files
+    assert all(
+        not file.name_is_non_test and file.type != SupportFile.item_type
+        for file in test_files
+    )
+
+    # Should only have 3 items instead of the original 4
+    assert len(test_files) == 3
+
+@patch("builtins.open", new_callable=mock_open, read_data="data")
+@patch("os.listdir")
+@patch("os.path.isdir")
+@patch("os.path.isfile")
+@patch("tools.web_features.manifest.load_data_to_dict", return_value={})
+@patch("tools.web_features.manifest.find_all_test_files_in_dir")
+@patch("tools.web_features.manifest.WebFeaturesFile")
+@patch("tools.web_features.manifest.WebFeatureToTestsDirMapper", spec=WebFeatureToTestsDirMapper)
+def test_map_tests_to_web_features_recursive(
+    mock_mapper,
+    mock_web_features_file,
+    mock_find_all_test_files_in_dir,
+    mock_load_data_to_dict,
+    mock_isfile,
+    mock_isdir,
+    mock_listdir,
+    mock_file
+):
+    def fake_listdir(path):
+        if path.endswith("repo_root"):
+            return ["subdir1", "subdir2"]
+        elif path.endswith(os.path.join("repo_root", "subdir1")):
+            return ["subdir1_1", "subdir1_2", WEB_FEATURES_YML_FILENAME]
+        elif path.endswith(os.path.join("repo_root", "subdir1", "subdir1_1")):
+            return [WEB_FEATURES_YML_FILENAME]
+        elif path.endswith(os.path.join("repo_root", "subdir1", "subdir1_2")):
+            return []
+        elif path.endswith(os.path.join("repo_root", "subdir2")):
+            return [WEB_FEATURES_YML_FILENAME]
+        else:
+            []
+    mock_listdir.side_effect = fake_listdir
+
+    def fake_isdir(path):
+        if (path.endswith(os.path.join("repo_root", "subdir1")) or
+        path.endswith(os.path.join("repo_root", "subdir1", "subdir1_1")) or
+        path.endswith(os.path.join("repo_root", "subdir1", "subdir1_2")) or
+        path.endswith(os.path.join("repo_root", "subdir2"))):
+            return True
+        return False
+    mock_isdir.side_effect = fake_isdir
+
+    def fake_isfile(path):
+        if (path.endswith(os.path.join("repo_root", "subdir1", "WEB_FEATURES.yml")) or
+        path.endswith(os.path.join("repo_root", "subdir1", "subdir1_1", "WEB_FEATURES.yml")) or
+        path.endswith(os.path.join("repo_root", "subdir2", "WEB_FEATURES.yml"))):
+            return True
+        return False
+    mock_isfile.side_effect = fake_isfile
+
+
+    expected_root_files = [
+        Mock(name="root_test_1"),
+    ]
+
+    expected_subdir1_files = [
+        Mock(name="subdir1_test_1"),
+        Mock(name="subdir1_test_2"),
+    ]
+
+    expected_subdir2_files = [
+        Mock(name="subdir2_test_1"),
+    ]
+
+    expected_subdir1_1_files = [
+        Mock(name="subdir1_1_test_1"),
+        Mock(name="subdir1_1_test_2"),
+    ]
+
+    expected_subdir1_2_files = [
+        Mock(name="subdir1_2_test_1"),
+        Mock(name="subdir1_2_test_2"),
+    ]
+
+    expected_subdir1_web_feature_file = Mock()
+    expected_subdir1_1_web_feature_file = Mock()
+    expected_subdir2_web_feature_file = Mock()
+    mock_web_features_file.side_effect = [
+        expected_subdir1_web_feature_file,
+        expected_subdir1_1_web_feature_file,
+        expected_subdir2_web_feature_file,
+    ]
+
+    def fake_find_all_test_files_in_dir(root, rel_path, url_root):
+        # All cases should use url_root == "/"
+        if url_root != "/":
+            return None
+        elif (root == "repo_root" and rel_path == "."):
+            return expected_root_files
+        elif (root == "repo_root" and rel_path == "subdir1"):
+            return expected_subdir1_files
+        elif (root == "repo_root" and rel_path == os.path.join("subdir1", "subdir1_1")):
+            return expected_subdir1_1_files
+        elif (root == "repo_root" and rel_path == os.path.join("subdir1", "subdir1_2")):
+            return expected_subdir1_2_files
+        elif (root == "repo_root" and rel_path == "subdir2"):
+            return expected_subdir2_files
+    mock_find_all_test_files_in_dir.side_effect = fake_find_all_test_files_in_dir
+    cmd_cfg = CmdConfig("repo_root", "/")
+    result = WebFeaturesMap()
+
+    map_tests_to_web_features(cmd_cfg, "", result)
+
+    assert mock_isfile.call_count == 5
+    assert mock_mapper.call_count == 5
+
+    # Check for the constructor calls.
+    # In between also assert that the run() call is executed.
+    mock_mapper.assert_has_calls([
+        call(expected_root_files, None),
+        call().run(ANY, []),
+        call(expected_subdir1_files, expected_subdir1_web_feature_file),
+        call().run(ANY, []),
+        call(expected_subdir1_1_files, expected_subdir1_1_web_feature_file),
+        call().run(ANY, []),
+        call(expected_subdir1_2_files, None),
+        call().run(ANY, []),
+        call(expected_subdir2_files, expected_subdir2_web_feature_file),
+        call().run(ANY, []),
+    ])
+
+
+    # Only five times to the constructor
+    assert mock_mapper.call_count == 5
+
+
+def test_parser_with_path_provided_abs_path():
+    parser = create_parser()
+    args = parser.parse_args(["--path", f"{os.path.abspath(os.sep)}manifest-path"])
+    assert args.path == f"{os.path.abspath(os.sep)}manifest-path"
+
+def populate_test_web_features_map(web_features_map):
+    web_features_map.add("grid", [
+        Mock(spec=URLManifestItem, url="/grid_test1.js"),
+        Mock(spec=URLManifestItem, url="/grid_test2.js"),
+    ])
+    web_features_map.add("avif", [Mock(spec=URLManifestItem, url="/avif_test1.js")])
+
+
+def test_valid_schema():
+    with open(os.path.join(os.path.dirname(__file__), '..', 'MANIFEST_SCHEMA.json'), 'r') as schema_file:
+        schema_dict = json.load(schema_file)
+
+    web_features_map = WebFeaturesMap()
+    populate_test_web_features_map(web_features_map)
+
+    with patch('builtins.open', new_callable=mock_open) as mock_file:
+        write_manifest_file("test_file.json", web_features_map)
+        mock_file.assert_called_once_with("test_file.json", "w")
+        mock_file.return_value.write.assert_called_once_with(
+            ('{"version": 1,'
+            ' "data": {"grid": ["/grid_test1.js", "/grid_test2.js"], "avif": ["/avif_test1.js"]}}'))
+        args = mock_file.return_value.write.call_args
+        file_dict = json.loads(args[0][0])
+        # Should not throw an exception
+        try:
+            validate(file_dict, schema_dict)
+        except Exception as e:
+            assert False, f"'validate' raised an exception {e}"
+
+
+@pytest.mark.parametrize('main_kwargs,expected_repo_root,expected_path', [
+    # No flags. All default
+    (
+        {},
+        localpaths.repo_root,
+        os.path.join(localpaths.repo_root, "WEB_FEATURES_MANIFEST.json")
+    ),
+    # Provide the path flag
+    (
+        {
+            "path": os.path.join(os.sep, "test_path", "WEB_FEATURES_MANIFEST.json"),
+        },
+        localpaths.repo_root,
+        os.path.join(os.sep, "test_path", "WEB_FEATURES_MANIFEST.json")
+    ),
+])
+@patch("tools.web_features.manifest.map_tests_to_web_features")
+@patch("tools.web_features.manifest.write_manifest_file")
+def test_main(
+        mock_write_manifest_file,
+        mock_map_tests_to_web_features,
+        main_kwargs,
+        expected_repo_root,
+        expected_path):
+
+    def fake_map_tests_to_web_features(
+            cmd_cfg,
+            rel_dir_path,
+            result,
+            prev_inherited_features = []):
+        populate_test_web_features_map(result)
+
+    default_kwargs = {"url_base": "/"}
+    main_kwargs.update(default_kwargs)
+    mock_map_tests_to_web_features.side_effect = fake_map_tests_to_web_features
+    main(**main_kwargs)
+    mock_map_tests_to_web_features.assert_called_once_with(CmdConfig(repo_root=expected_repo_root, url_base="/"), "", ANY)
+    mock_write_manifest_file.assert_called_once()
+    args = mock_write_manifest_file.call_args
+    path = args[0][0]
+    file = args[0][1]
+    assert path == expected_path
+    assert file.to_dict() == {
+        'avif': ['/avif_test1.js'],
+        'grid': ['/grid_test1.js', '/grid_test2.js']}
diff --git a/tests/wpt/tests/tools/web_features/tests/test_web_feature_map.py b/tests/wpt/tests/tools/web_features/tests/test_web_feature_map.py
new file mode 100644
index 00000000000..06afa181fe5
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/tests/test_web_feature_map.py
@@ -0,0 +1,157 @@
+# mypy: allow-untyped-defs
+
+from unittest.mock import Mock, patch
+
+from ...manifest.item import URLManifestItem
+from ...metadata.webfeatures.schema import FeatureFile
+from ..web_feature_map import WebFeaturesMap, WebFeatureToTestsDirMapper
+
+
+TEST_FILES = [
+    Mock(
+        path="root/blob-range.any.js",
+        manifest_items=Mock(
+            return_value=(
+                None,
+                [
+                    Mock(spec=URLManifestItem, url="/root/blob-range.any.html"),
+                    Mock(spec=URLManifestItem, url="/root/blob-range.any.worker.html"),
+                ])
+        )
+    ),
+    Mock(
+        path="root/foo-range.any.js",
+        manifest_items=Mock(
+            return_value=(
+                None,
+                [
+                    Mock(spec=URLManifestItem, url="/root/foo-range.any.html"),
+                    Mock(spec=URLManifestItem, url="/root/foo-range.any.worker.html"),
+                ])
+        )
+    ),
+]
+
+def test_process_recursive_feature():
+    mapper = WebFeatureToTestsDirMapper(TEST_FILES, None)
+    result = WebFeaturesMap()
+    inherited_features = []
+
+    feature_entry = Mock()
+    feature_entry.name = "grid"
+    mapper._process_recursive_feature(inherited_features, feature_entry, result)
+
+    assert result.to_dict() == {
+        "grid": [
+            "/root/blob-range.any.html",
+            "/root/blob-range.any.worker.html",
+            "/root/foo-range.any.html",
+            "/root/foo-range.any.worker.html",
+        ],
+    }
+    assert inherited_features == ["grid"]
+
+
+def test_process_non_recursive_feature():
+    feature_name = "feature1"
+    feature_files = [
+        FeatureFile("blob-range.any.js"),  # Matches blob-range.any.js
+        FeatureFile("blob-range.html"),  # Doesn't match any test file
+    ]
+
+    mapper = WebFeatureToTestsDirMapper(TEST_FILES, None)
+    result = WebFeaturesMap()
+
+    mapper._process_non_recursive_feature(feature_name, feature_files, result)
+
+    assert result.to_dict() == {
+        "feature1": [
+            "/root/blob-range.any.html",
+            "/root/blob-range.any.worker.html",
+        ]
+    }
+
+
+def test_process_inherited_features():
+    mapper = WebFeatureToTestsDirMapper(TEST_FILES, None)
+    result = WebFeaturesMap()
+    result.add("avif", [
+        Mock(spec=URLManifestItem, path="root/bar-range.any.html", url="/root/bar-range.any.html"),
+        Mock(spec=URLManifestItem, path="root/bar-range.any.worker.html", url="/root/bar-range.any.worker.html"),
+    ])
+    inherited_features = ["avif", "grid"]
+
+    mapper._process_inherited_features(inherited_features, result)
+
+    assert result.to_dict() == {
+        "avif": [
+            "/root/bar-range.any.html",
+            "/root/bar-range.any.worker.html",
+            "/root/blob-range.any.html",
+            "/root/blob-range.any.worker.html",
+            "/root/foo-range.any.html",
+            "/root/foo-range.any.worker.html",
+        ],
+        "grid": [
+            "/root/blob-range.any.html",
+            "/root/blob-range.any.worker.html",
+            "/root/foo-range.any.html",
+            "/root/foo-range.any.worker.html",
+        ],
+    }
+    assert inherited_features == ["avif", "grid"]
+
+def create_feature_entry(name, recursive=False, files=None):
+    rv = Mock(does_feature_apply_recursively=Mock(return_value=recursive))
+    rv.name = name
+    rv.files = files
+    return rv
+
+
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_recursive_feature")
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_non_recursive_feature")
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_inherited_features")
+def test_run_with_web_feature_file(
+        _process_inherited_features,
+        _process_non_recursive_feature,
+        _process_recursive_feature):
+    feature_entry1 = create_feature_entry("feature1", True)
+    feature_entry2 = create_feature_entry("feature2", files=[FeatureFile("test_file1.py")])
+    mock_web_feature_file = Mock(
+        features=[
+            feature_entry1,
+            feature_entry2,
+        ])
+    mapper = WebFeatureToTestsDirMapper(TEST_FILES, mock_web_feature_file)
+
+
+    result = WebFeaturesMap()
+    mapper.run(result, ["foo", "bar"])
+
+    _process_recursive_feature.assert_called_once_with(
+        [], feature_entry1, result
+    )
+    _process_non_recursive_feature.assert_called_once_with(
+        "feature2", [FeatureFile("test_file1.py")], result
+    )
+
+    assert not _process_inherited_features.called
+
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_recursive_feature")
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_non_recursive_feature")
+@patch("tools.web_features.web_feature_map.WebFeatureToTestsDirMapper._process_inherited_features")
+def test_run_without_web_feature_file(
+        _process_inherited_features,
+        _process_non_recursive_feature,
+        _process_recursive_feature):
+    mapper = WebFeatureToTestsDirMapper(TEST_FILES, None)
+
+    result = WebFeaturesMap()
+    mapper.run(result, ["foo", "bar"])
+
+    assert not _process_recursive_feature.called
+    assert not _process_non_recursive_feature.called
+
+    _process_inherited_features.assert_called_once_with(
+        ["foo", "bar"], result
+    )
diff --git a/tests/wpt/tests/tools/web_features/web_feature_map.py b/tests/wpt/tests/tools/web_features/web_feature_map.py
new file mode 100644
index 00000000000..d66b07e1146
--- /dev/null
+++ b/tests/wpt/tests/tools/web_features/web_feature_map.py
@@ -0,0 +1,119 @@
+import itertools
+
+from collections import OrderedDict
+from os.path import basename
+from typing import Dict, List, Optional, Sequence, Set
+
+from ..manifest.item import ManifestItem, URLManifestItem
+from ..manifest.sourcefile import SourceFile
+from ..metadata.webfeatures.schema import FeatureEntry, FeatureFile, WebFeaturesFile
+
+
+class WebFeaturesMap:
+    """
+    Stores a mapping of web-features to their associated test paths.
+    """
+
+    def __init__(self) -> None:
+        """
+        Initializes the WebFeaturesMap with an OrderedDict to maintain feature order.
+        """
+        self._feature_tests_map_: OrderedDict[str, Set[str]] = OrderedDict()
+
+
+    def add(self, feature: str, manifest_items: List[ManifestItem]) -> None:
+        """
+        Adds a web feature and its associated test paths to the map.
+
+        Args:
+            feature: The web-features identifier.
+            manifest_items: The ManifestItem objects representing the test paths.
+        """
+        tests = self._feature_tests_map_.get(feature, set())
+        self._feature_tests_map_[feature] = tests.union([
+            manifest_item.url for manifest_item in manifest_items if isinstance(manifest_item, URLManifestItem)])
+
+
+    def to_dict(self) -> Dict[str, List[str]]:
+        """
+        Returns:
+            The plain dictionary representation of the map.
+        """
+        rv: Dict[str, List[str]] = {}
+        for feature, manifest_items in self._feature_tests_map_.items():
+            # Sort the list to keep output stable
+            rv[feature] = sorted(manifest_items)
+        return rv
+
+
+class WebFeatureToTestsDirMapper:
+    """
+    Maps web-features to tests within a specified directory.
+    """
+
+    def __init__(
+            self,
+            all_test_files_in_dir: List[SourceFile],
+            web_feature_file: Optional[WebFeaturesFile]):
+        """
+        Initializes the mapper with test paths and web feature information.
+        """
+
+        self.all_test_files_in_dir = all_test_files_in_dir
+        self.test_path_to_manifest_items_map = dict([(basename(f.path), f.manifest_items()[1]) for f in self.all_test_files_in_dir])
+        # Used to check if the current directory has a WEB_FEATURE_FILENAME
+        self.web_feature_file = web_feature_file
+        # Gets the manifest items for each test path and returns them into a single list.
+        self. get_all_manifest_items_for_dir = list(itertools.chain.from_iterable([
+            items for _, items in self.test_path_to_manifest_items_map.items()]))
+
+
+    def _process_inherited_features(
+            self,
+            inherited_features: List[str],
+            result: WebFeaturesMap) -> None:
+        # No WEB_FEATURE.yml in this directory. Simply add the current features to the inherited features
+        for inherited_feature in inherited_features:
+            result.add(inherited_feature, self.get_all_manifest_items_for_dir)
+
+    def _process_recursive_feature(
+            self,
+            inherited_features: List[str],
+            feature: FeatureEntry,
+            result: WebFeaturesMap) -> None:
+        inherited_features.append(feature.name)
+        result.add(feature.name, self.get_all_manifest_items_for_dir)
+
+    def _process_non_recursive_feature(
+            self,
+            feature_name: str,
+            files: Sequence[FeatureFile],
+            result: WebFeaturesMap) -> None:
+        # If the feature does not apply recursively, look at the individual
+        # files and match them against all_test_files_in_dir.
+        test_file_paths: List[ManifestItem] = []
+        base_test_file_names = [basename(f.path) for f in self.all_test_files_in_dir]
+        for test_file in files:
+            matched_base_file_names = test_file.match_files(base_test_file_names)
+            test_file_paths.extend(itertools.chain.from_iterable([
+                self.test_path_to_manifest_items_map[f] for f in matched_base_file_names]))
+
+        result.add(feature_name, test_file_paths)
+
+    def run(self, result: WebFeaturesMap, inherited_features: List[str]) -> None:
+        if self.web_feature_file:
+            # Do not copy the inherited features because the presence of a
+            # WEB_FEATURES.yml file indicates new instructions.
+            inherited_features.clear()
+
+            # Iterate over all the features in this new file
+            for feature in self.web_feature_file.features:
+                # Handle the "**" case
+                if feature.does_feature_apply_recursively():
+                    self._process_recursive_feature(inherited_features, feature, result)
+
+                # Handle the non recursive case.
+                elif isinstance(feature.files, List) and feature.files:
+                    self._process_non_recursive_feature(feature.name, feature.files, result)
+        else:
+            self._process_inherited_features(inherited_features, result)
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
index 8f891ffafd6..73bba55791b 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
@@ -94,6 +94,7 @@ class BidiSession:
         self.browsing_context = modules.BrowsingContext(self)
         self.input = modules.Input(self)
         self.network = modules.Network(self)
+        self.permissions = modules.Permissions(self)
         self.script = modules.Script(self)
         self.session = modules.Session(self)
         self.storage = modules.Storage(self)
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
index 7e411d3b83b..b0cecce09f7 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
@@ -87,6 +87,10 @@ class UnableToCaptureScreenException(BidiException):
     error_code = "unable to capture screen"
 
 
+class UnableToSetCookieException(BidiException):
+    error_code = "unable to set cookie"
+
+
 class UnknownCommandException(BidiException):
     error_code = "unknown command"
 
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/__init__.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/__init__.py
index 6f63e85bcd0..0a2ef500c42 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/__init__.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/__init__.py
@@ -4,6 +4,7 @@ from .browser import Browser
 from .browsing_context import BrowsingContext
 from .input import Input
 from .network import Network
+from .permissions import Permissions
 from .script import Script
 from .session import Session
 from .storage import Storage
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/permissions.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/permissions.py
new file mode 100644
index 00000000000..3062260b348
--- /dev/null
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/permissions.py
@@ -0,0 +1,18 @@
+from typing import Any, Optional, Mapping, MutableMapping, Union
+from webdriver.bidi.undefined import UNDEFINED, Undefined
+
+from ._module import BidiModule, command
+
+
+class Permissions(BidiModule):
+    @command
+    def set_permission(self,
+                    descriptor: Union[Optional[Mapping[str, Any]], Undefined] = UNDEFINED,
+                    state: Union[Optional[str], Undefined] = UNDEFINED,
+                    origin: Union[Optional[str], Undefined] = UNDEFINED) -> Mapping[str, Any]:
+        params: MutableMapping[str, Any] = {
+            "descriptor": descriptor,
+            "state": state,
+            "origin": origin
+        }
+        return params
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/storage.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/storage.py
index c13b196d26a..c6c51cd9bce 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/storage.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/storage.py
@@ -1,7 +1,5 @@
 from typing import Any, Dict, Mapping, MutableMapping, Optional, Union
-
 from ._module import BidiModule, command
-
 from webdriver.bidi.modules.network import NetworkBytesValue
 
 
@@ -11,7 +9,8 @@ class BrowsingContextPartitionDescriptor(Dict[str, Any]):
 
 
 class StorageKeyPartitionDescriptor(Dict[str, Any]):
-    def __init__(self, user_context: Optional[str] = None, source_origin: Optional[str] = None):
+    def __init__(self, user_context: Optional[str] = None,
+                 source_origin: Optional[str] = None):
         dict.__init__(self, type="storageKey")
         if user_context is not None:
             self["userContext"] = user_context
@@ -52,16 +51,19 @@ class Storage(BidiModule):
     # TODO: extend with `filter`.
     @command
     def get_cookies(self, partition: Optional[PartitionDescriptor] = None) -> Mapping[str, Any]:
-        params = {}
+        params: MutableMapping[str, Any] = {}
         if partition is not None:
             params["partition"] = partition
         return params
 
     @command
-    def set_cookie(self, cookie: PartialCookie, partition: Optional[PartitionDescriptor] = None) -> \
-            Mapping[str, Any]:
+    def set_cookie(
+            self,
+            cookie: PartialCookie,
+            partition: Optional[PartitionDescriptor] = None
+    ) -> Mapping[str, Any]:
         params: MutableMapping[str, Any] = {
-            'cookie': cookie,
+            "cookie": cookie
         }
         if partition is not None:
             params["partition"] = partition
diff --git a/tests/wpt/tests/tools/wpt/android.py b/tests/wpt/tests/tools/wpt/android.py
index 3def5cede44..89dc9fad25c 100644
--- a/tests/wpt/tests/tools/wpt/android.py
+++ b/tests/wpt/tests/tools/wpt/android.py
@@ -288,8 +288,8 @@ def install(logger, dest=None, reinstall=False, prompt=True):
 
         if new_install:
             packages = ["platform-tools",
-                        "build-tools;33.0.1",
-                        "platforms;android-33",
+                        "build-tools;34.0.0",
+                        "platforms;android-34",
                         "emulator"]
 
             install_android_packages(logger, paths, packages, prompt=prompt)
diff --git a/tests/wpt/tests/tools/wpt/paths b/tests/wpt/tests/tools/wpt/paths
index 7e9ae837ecf..5a1303362b3 100644
--- a/tests/wpt/tests/tools/wpt/paths
+++ b/tests/wpt/tests/tools/wpt/paths
@@ -5,3 +5,4 @@ tools/lint/
 tools/manifest/
 tools/serve/
 tools/wpt/
+tools/web_features/
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
index 0cb5ff5d104..87b75d8c06b 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox.py
@@ -726,6 +726,9 @@ class ProfileCreator:
         if self.test_type == "print-reftest":
             profile.set_preferences({"print.always_print_silent": True})
 
+        if self.test_type == "wdspec":
+            profile.set_preferences({"remote.prefs.recommended": True})
+
         # Bug 1262954: winxp + e10s, disable hwaccel
         if (self.e10s and platform.system() in ("Windows", "Microsoft") and
             "5.1" in platform.version()):
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 6ebe4a69054..16ec605b726 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
@@ -176,6 +176,9 @@ class ProfileCreator(FirefoxProfileCreator):
                 "layout.testing.overlay-scrollbars.always-visible": True,
             })
 
+        if self.test_type == "wdspec":
+            profile.set_preferences({"remote.prefs.recommended": True})
+
         profile.set_preferences({"fission.autostart": True})
         if self.disable_fission:
             profile.set_preferences({"fission.autostart": False})
diff --git a/tests/wpt/tests/web-animations/animation-model/animation-types/property-list.js b/tests/wpt/tests/web-animations/animation-model/animation-types/property-list.js
index 39a92c7498d..692ff013287 100644
--- a/tests/wpt/tests/web-animations/animation-model/animation-types/property-list.js
+++ b/tests/wpt/tests/web-animations/animation-model/animation-types/property-list.js
@@ -1286,7 +1286,7 @@ const gCSSProperties2 = {
     ]
   },
   'text-autospace': {
-    // https://drafts.csswg.org/css-text-4/#text-spacing-property
+    // https://drafts.csswg.org/css-text-4/#text-autospace-property
     types: [
       { type: 'discrete', options: [ [ 'normal', 'no-autospace' ] ] }
     ]
@@ -1356,9 +1356,9 @@ const gCSSProperties2 = {
     }
   },
   'text-spacing-trim': {
-    // https://svgwg.org/svg2-draft/painting.html#TextRenderingProperty
+    // https://drafts.csswg.org/css-text-4/#text-spacing-trim-property
     types: [
-      { type: 'discrete', options: [ [ 'auto', 'space-all' ] ] }
+      { type: 'discrete', options: [ [ 'normal', 'space-all' ] ] }
     ]
   },
   'text-transform': {
diff --git a/tests/wpt/tests/web-animations/animation-model/resources/side-effects-common.js b/tests/wpt/tests/web-animations/animation-model/resources/side-effects-common.js
new file mode 100644
index 00000000000..2f6531d4fc4
--- /dev/null
+++ b/tests/wpt/tests/web-animations/animation-model/resources/side-effects-common.js
@@ -0,0 +1,81 @@
+'use strict';
+
+const PROPERTY_OPACITY = 0;
+const PROPERTY_TRANSFORM = 1;
+const PROPERTY_BGCOLOR = 2;
+
+const PHASE_BEFORE = 10;
+const PHASE_ACTIVE = 11;
+const PHASE_AFTER = 12;
+
+const STATE_CURRENT = 100;
+const STATE_IN_EFFECT = 101;
+const STATE_NONE = 102;
+
+// Creates an animation in the given state/page used to test side-effects. See:
+// https://drafts.csswg.org/web-animations-1/#animation-effect-phases-and-states
+//
+// testcase - A query string for the test case root. Must have a descendant
+//            with the 'target' class that will be animated.
+// state - One of the STATE_ constants above. Configures the animation to be
+//         either "current", "in effect" or neither.
+// property - One of the PROPERTY_ constants above, the property the animation
+//            will target.
+// phase - One of the PHASE_ constants above. Configures the animation to be in
+//         the before/active/after phase.
+function setupAnimation(testcase, state, property, phase) {
+  const root = document.querySelector(testcase);
+  const effect_target = root.querySelector('.target');
+
+  let keyframe;
+  if (property == PROPERTY_OPACITY)
+    keyframe = { opacity: 1};
+  else if (property == PROPERTY_TRANSFORM)
+    keyframe = { transform: 'translateX(0px)' };
+  else if (property == PROPERTY_BGCOLOR)
+    keyframe = { backgroundColor: 'red' };
+  else
+    throw new Error('Unexpected property');
+
+  const kPhaseDuration = 1000000;
+  const kBeforePhaseTime = kPhaseDuration / 2;
+  const kActivePhaseTime = kPhaseDuration + kPhaseDuration / 2;
+  const kAfterPhaseTime = 2 * kPhaseDuration + kPhaseDuration / 2;
+
+  const options = {
+    duration: kPhaseDuration,
+    delay: kPhaseDuration,
+    endDelay: kPhaseDuration,
+
+    easing: 'steps(1, jump-both)',
+
+    fill: (state == STATE_IN_EFFECT ? 'both' : 'none'),
+  };
+
+  const animation = effect_target.animate(
+    [ keyframe, keyframe ], options);
+
+  switch(phase) {
+    case PHASE_BEFORE:
+      animation.currentTime = kBeforePhaseTime;
+      if (state == STATE_IN_EFFECT || state == STATE_NONE)
+        animation.playbackRate = -1;
+      break;
+
+    case PHASE_ACTIVE:
+      if (state == STATE_NONE)
+        throw new Error("Cannot have state[NONE] in the active phase");
+
+      animation.currentTime = kActivePhaseTime;
+      break;
+
+    case PHASE_AFTER:
+      animation.currentTime = kAfterPhaseTime;
+      if (state == STATE_CURRENT)
+        animation.playbackRate = -1;
+      break;
+
+    default:
+      throw new Error('Unexpected phase');
+  }
+}
diff --git a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-current.html b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-current.html
index b0de72bdbf9..18b13be9fa6 100644
--- a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-current.html
+++ b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-current.html
@@ -8,6 +8,8 @@
 <link rel="author" href="mailto:bokan@chromium.org">
 <link rel="match" href="side-effects-of-animations-current-ref.html">
 <script src="/common/reftest-wait.js"></script>
+<script src="../testcommon.js"></script>
+<script src="resources/side-effects-common.js"></script>
 <style>
   .testcase {
     position: relative;
@@ -48,49 +50,7 @@
 </style>
 
 <script>
-const PROPERTY_OPACITY = 0;
-const PROPERTY_TRANSFORM = 1;
-const PROPERTY_BGCOLOR = 2;
-
-const PHASE_BEFORE = 10;
-const PHASE_ACTIVE = 11;
-const PHASE_AFTER = 12;
-
-// Setup an animation and put it in a state where it is current but, if outside
-// the active phase, not in effect.
-function setupAnimation(testcase, property, phase) {
-  const root = document.querySelector(testcase);
-  const effect_target = root.querySelector('.target');
-  let keyframe;
-  if (property == PROPERTY_OPACITY)
-    keyframe = { opacity: 1};
-  else if (property == PROPERTY_TRANSFORM)
-    keyframe = { transform: 'translateX(0px)' };
-  else if (property == PROPERTY_BGCOLOR)
-    keyframe = { backgroundColor: 'red' };
-  else
-    throw new Error('Unexpected property');
-
-  const options = { duration: 1000, delay: 1000, endDelay: 1000 };
-
-  const animation = effect_target.animate(
-    [ keyframe, keyframe ], options);
-
-  if (phase == PHASE_BEFORE) {
-    animation.currentTime = 500;
-  } else if (phase == PHASE_ACTIVE) {
-    animation.currentTime = 1500;
-  } else if (phase == PHASE_AFTER) {
-    animation.currentTime = 2500;
-    animation.playbackRate = -1;
-  } else {
-    throw new Error('Unexpected phase');
-  }
-
-  animation.pause();
-}
-
-onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+onload = takeScreenshotOnAnimationsReady;
 </script>
 
 <!-- OPACITY -->
@@ -104,7 +64,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-before', PROPERTY_OPACITY, PHASE_BEFORE);
+  setupAnimation('#opacity-before', STATE_CURRENT, PROPERTY_OPACITY, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -116,7 +76,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-active', PROPERTY_OPACITY, PHASE_ACTIVE);
+  setupAnimation('#opacity-active', STATE_CURRENT, PROPERTY_OPACITY, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -128,7 +88,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-after', PROPERTY_OPACITY, PHASE_AFTER);
+  setupAnimation('#opacity-after', STATE_CURRENT, PROPERTY_OPACITY, PHASE_AFTER);
 </script>
 
 <!-- TRANSFORM -->
@@ -142,7 +102,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-before', PROPERTY_TRANSFORM, PHASE_BEFORE);
+  setupAnimation('#transform-before', STATE_CURRENT, PROPERTY_TRANSFORM, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -154,7 +114,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-active', PROPERTY_TRANSFORM, PHASE_ACTIVE);
+  setupAnimation('#transform-active', STATE_CURRENT, PROPERTY_TRANSFORM, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -166,7 +126,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-after', PROPERTY_TRANSFORM, PHASE_AFTER);
+  setupAnimation('#transform-after', STATE_CURRENT, PROPERTY_TRANSFORM, PHASE_AFTER);
 </script>
 
 <!-- BACKGROUND COLOR -->
@@ -184,7 +144,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-before', PROPERTY_BGCOLOR, PHASE_BEFORE);
+  setupAnimation('#bgcolor-before', STATE_CURRENT, PROPERTY_BGCOLOR, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -196,7 +156,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-active', PROPERTY_BGCOLOR, PHASE_ACTIVE);
+  setupAnimation('#bgcolor-active', STATE_CURRENT, PROPERTY_BGCOLOR, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -208,7 +168,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-after', PROPERTY_BGCOLOR, PHASE_AFTER);
+  setupAnimation('#bgcolor-after', STATE_CURRENT, PROPERTY_BGCOLOR, PHASE_AFTER);
 </script>
 
 </html>
diff --git a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-in-effect.html b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-in-effect.html
index ff53c98d793..90ee0550827 100644
--- a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-in-effect.html
+++ b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-in-effect.html
@@ -8,6 +8,8 @@
 <link rel="author" href="mailto:bokan@chromium.org">
 <link rel="match" href="side-effects-of-animations-in-effect-ref.html">
 <script src="/common/reftest-wait.js"></script>
+<script src="../testcommon.js"></script>
+<script src="resources/side-effects-common.js"></script>
 <style>
   .testcase {
     position: relative;
@@ -48,49 +50,7 @@
 </style>
 
 <script>
-const PROPERTY_OPACITY = 0;
-const PROPERTY_TRANSFORM = 1;
-const PROPERTY_BGCOLOR = 2;
-
-const PHASE_BEFORE = 10;
-const PHASE_ACTIVE = 11;
-const PHASE_AFTER = 12;
-
-// Setup an animation and put it in a state where it is in effect but, if
-// outside the active phase, not current.
-function setupAnimation(testcase, property, phase) {
-  const root = document.querySelector(testcase);
-  const effect_target = root.querySelector('.target');
-  let keyframe;
-  if (property == PROPERTY_OPACITY)
-    keyframe = { opacity: 1};
-  else if (property == PROPERTY_TRANSFORM)
-    keyframe = { transform: 'translateX(0px)' };
-  else if (property == PROPERTY_BGCOLOR)
-    keyframe = { backgroundColor: 'red' };
-  else
-    throw new Error('Unexpected property');
-
-  const options = { duration: 1000, delay: 1000, endDelay: 1000, fill: 'both' };
-
-  const animation = effect_target.animate(
-    [ keyframe, keyframe ], options);
-
-  if (phase == PHASE_BEFORE) {
-    animation.currentTime = 500;
-    animation.playbackRate = -1;
-  } else if (phase == PHASE_ACTIVE) {
-    animation.currentTime = 1500;
-  } else if (phase == PHASE_AFTER) {
-    animation.currentTime = 2500;
-  } else {
-    throw new Error('Unexpected phase');
-  }
-
-  animation.pause();
-}
-
-onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+onload = takeScreenshotOnAnimationsReady;
 </script>
 
 <!-- OPACITY -->
@@ -104,7 +64,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-before', PROPERTY_OPACITY, PHASE_BEFORE);
+  setupAnimation('#opacity-before', STATE_IN_EFFECT, PROPERTY_OPACITY, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -116,7 +76,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-active', PROPERTY_OPACITY, PHASE_ACTIVE);
+  setupAnimation('#opacity-active', STATE_IN_EFFECT, PROPERTY_OPACITY, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -128,7 +88,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#opacity-after', PROPERTY_OPACITY, PHASE_AFTER);
+  setupAnimation('#opacity-after', STATE_IN_EFFECT, PROPERTY_OPACITY, PHASE_AFTER);
 </script>
 
 <!-- TRANSFORM -->
@@ -142,7 +102,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-before', PROPERTY_TRANSFORM, PHASE_BEFORE);
+  setupAnimation('#transform-before', STATE_IN_EFFECT, PROPERTY_TRANSFORM, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -154,7 +114,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-active', PROPERTY_TRANSFORM, PHASE_ACTIVE);
+  setupAnimation('#transform-active', STATE_IN_EFFECT, PROPERTY_TRANSFORM, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -166,7 +126,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#transform-after', PROPERTY_TRANSFORM, PHASE_AFTER);
+  setupAnimation('#transform-after', STATE_IN_EFFECT, PROPERTY_TRANSFORM, PHASE_AFTER);
 </script>
 
 <!-- BACKGROUND COLOR -->
@@ -184,7 +144,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-before', PROPERTY_BGCOLOR, PHASE_BEFORE);
+  setupAnimation('#bgcolor-before', STATE_IN_EFFECT, PROPERTY_BGCOLOR, PHASE_BEFORE);
 </script>
 
 <!-- Is current - in play-->
@@ -196,7 +156,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-active', PROPERTY_BGCOLOR, PHASE_ACTIVE);
+  setupAnimation('#bgcolor-active', STATE_IN_EFFECT, PROPERTY_BGCOLOR, PHASE_ACTIVE);
 </script>
 
 <!-- Is current - after phase playing backwards-->
@@ -208,7 +168,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#bgcolor-after', PROPERTY_BGCOLOR, PHASE_AFTER);
+  setupAnimation('#bgcolor-after', STATE_IN_EFFECT, PROPERTY_BGCOLOR, PHASE_AFTER);
 </script>
 
 </html>
diff --git a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-none.html b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-none.html
index b460ecc27fd..d200409e647 100644
--- a/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-none.html
+++ b/tests/wpt/tests/web-animations/animation-model/side-effects-of-animations-none.html
@@ -7,6 +7,8 @@
 <link rel="author" href="mailto:bokan@chromium.org">
 <link rel="match" href="side-effects-of-animations-none-ref.html">
 <script src="/common/reftest-wait.js"></script>
+<script src="../testcommon.js"></script>
+<script src="resources/side-effects-common.js"></script>
 <style>
   .testcase {
     position: relative;
@@ -47,33 +49,7 @@
 </style>
 
 <script>
-const PHASE_BEFORE = 10;
-const PHASE_AFTER = 12;
-
-// Start an animation and put it into a state that's neither current nor in
-// effect.
-function setupAnimation(testcase, phase) {
-  const root = document.querySelector(testcase);
-  const effect_target = root.querySelector('.target');
-  const keyframe = { opacity: 1};
-  const options = { duration: 1000, delay: 1000, endDelay: 1000 };
-
-  const animation = effect_target.animate(
-    [ keyframe, keyframe ], options);
-
-  if (phase == PHASE_BEFORE) {
-    animation.currentTime = 500;
-    animation.playbackRate = -1;
-  } else if (phase == PHASE_AFTER) {
-    animation.currentTime = 2500;
-  } else {
-    throw new Error('Unexpected phase');
-  }
-
-  animation.pause();
-}
-
-onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+onload = takeScreenshotOnAnimationsReady;
 </script>
 
 <!-- before phase playing backwards -->
@@ -85,7 +61,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#before', PHASE_BEFORE);
+  setupAnimation('#before', STATE_NONE, PROPERTY_OPACITY, PHASE_BEFORE);
 </script>
 
 <!-- after phase playing forwards-->
@@ -97,7 +73,7 @@ onload = requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
   </div>
 </div>
 <script>
-  setupAnimation('#after', PHASE_AFTER);
+  setupAnimation('#after', STATE_NONE, PROPERTY_OPACITY, PHASE_AFTER);
 </script>
 
 </html>
diff --git a/tests/wpt/tests/web-animations/crashtests/color-mix-crashtest.html b/tests/wpt/tests/web-animations/crashtests/color-mix-crashtest.html
new file mode 100644
index 00000000000..91d29464f50
--- /dev/null
+++ b/tests/wpt/tests/web-animations/crashtests/color-mix-crashtest.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html class="test-wait">
+<title>Interpolation of a color-mix function with currentcolor should not crash</title>
+<!-- crbug.com/1493430 -->
+<style type="text/css">
+  @keyframes colorize {
+     from { color: forestgreen; }
+     to { color: plum; }
+  }
+  #target {
+    animation: colorize 1s Infinite alternate;
+    border: 1px solid transparent;
+    transition: border-color 1s ease-in-out;
+  }
+  #target.update {
+    border-color:
+        color-mix(in hsl longer hue, hsl(120 100% 50%) 20%,
+                  currentcolor);
+  }
+</style>
+<body>
+  <div id="target">Hello world</div>
+</body>
+<script src="../testcommon.js"></script>
+<script>
+  window.onload = async () => {
+    await waitForNextFrame();
+    target.classList.add('update');
+    await Promise.all(document.getAnimations().map(a => a.resolve));
+    await waitForNextFrame();
+    await waitForNextFrame();
+    document.documentElement.classList.remove('test-wait');
+  };
+</script>
+</html>
diff --git a/tests/wpt/tests/web-animations/testcommon.js b/tests/wpt/tests/web-animations/testcommon.js
index a106cd9ac67..5b22c658d5c 100644
--- a/tests/wpt/tests/web-animations/testcommon.js
+++ b/tests/wpt/tests/web-animations/testcommon.js
@@ -329,9 +329,14 @@ function assert_phase(animation, phase) {
 // Use with reftest-wait to wait until compositor commits are no longer deferred
 // before taking the screenshot.
 // crbug.com/1378671
-async function waitForCompositorReady(target) {
+async function waitForCompositorReady() {
   const animation =
       document.body.animate({ opacity: [ 1, 1 ] }, {duration: 1 });
   return animation.finished;
 }
 
+async function takeScreenshotOnAnimationsReady() {
+  await Promise.all(document.getAnimations().map(a => a.ready));
+  requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+}
+
diff --git a/tests/wpt/tests/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-state-change-after-close.http.window.js b/tests/wpt/tests/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-state-change-after-close.http.window.js
index c2e84536507..eccb0d172d0 100644
--- a/tests/wpt/tests/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-state-change-after-close.http.window.js
+++ b/tests/wpt/tests/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-state-change-after-close.http.window.js
@@ -1,6 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
-
 'use strict';
 
 promise_test(async t => {
diff --git a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-default-value.window.js b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-default-value.window.js
index 359df111846..ae55f217f4c 100644
--- a/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-default-value.window.js
+++ b/tests/wpt/tests/webaudio/the-audio-api/the-audioparam-interface/audioparam-default-value.window.js
@@ -1,6 +1,3 @@
-// META: script=/resources/testharness.js
-// META: script=/resources/testharnessreport.js
-
 'use strict';
 
 test(() => {
diff --git a/tests/wpt/tests/webauthn/createcredential-cross-origin-iframe.https.sub.html b/tests/wpt/tests/webauthn/createcredential-cross-origin-iframe.https.sub.html
new file mode 100644
index 00000000000..ecf99f68a2b
--- /dev/null
+++ b/tests/wpt/tests/webauthn/createcredential-cross-origin-iframe.https.sub.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>WebAuthn credential.create() in a cross-origin iframe tests</title>
+<meta name="timeout" content="long">
+<link rel="help" href="https://w3c.github.io/webauthn/#publickey-credentials-create-feature">
+<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=helpers.js></script>
+<body></body>
+<script>
+standardSetup(function() {
+    "use strict";
+
+    const targetOrigin = "https://{{hosts[alt][www]}}:{{ports[https][0]}}";
+
+    // Returns a |Promise| that gets resolved with |event.data| when |window|
+    // receives a "message" event whose |event.data.type| matches the string
+    // |message_data_type|.
+    function getMessageData(message_data_type) {
+        return new Promise(resolve => {
+            function waitAndRemove(e) {
+                if (!e.data || e.data.type != message_data_type)
+                    return;
+                window.removeEventListener("message", waitAndRemove);
+                resolve(e.data);
+            }
+            window.addEventListener("message", waitAndRemove);
+        });
+    }
+
+    // Creates an iframe with the given `src` and (optional) allow attribute.
+    // Waits for the iframe to load, based on receiving a "subframe-loaded"
+    // message from the iframe.
+    async function createIframe(test, src, allow) {
+        const iframeElement = document.createElement("iframe");
+        document.body.appendChild(iframeElement);
+        test.add_cleanup(() => {
+            iframeElement.remove();
+        });
+
+        if (allow !== undefined) {
+          iframeElement.allow = allow;
+        }
+
+        const loadedPromise = getMessageData("subframe-loaded");
+        iframeElement.src = src;
+        await loadedPromise;
+
+        return iframeElement;
+    }
+
+    promise_test(async (test) => {
+        const src = `${targetOrigin}/webauthn/resources/webauthn-subframe.sub.html`;
+        const iframe = await createIframe(test, src);
+
+        const resultPromise = getMessageData("result");
+        iframe.contentWindow.postMessage({type: "create-credential"}, {targetOrigin: targetOrigin});
+        const data = await resultPromise;
+
+        assert_equals(data.result, "failure");
+        assert_equals(data.error.name, "NotAllowedError");
+    }, "create() in cross-origin iframe fails without permissions policy");
+
+    promise_test(async (test) => {
+        const src = `${targetOrigin}/webauthn/resources/webauthn-subframe.sub.html`;
+        const iframe = await createIframe(test, src, "publickey-credentials-create");
+
+        const resultPromise = getMessageData("result");
+        iframe.contentWindow.postMessage({type: "create-credential", addUserActivation: false}, {targetOrigin: targetOrigin});
+        const data = await resultPromise;
+
+        assert_equals(data.result, "failure");
+        assert_equals(data.error.name, "NotAllowedError");
+    }, "create() in cross-origin iframe fails with permissions policy but no user activation");
+
+    promise_test(async (test) => {
+        const src = `${targetOrigin}/webauthn/resources/webauthn-subframe.sub.html`;
+        const iframe = await createIframe(test, src, "publickey-credentials-create");
+
+        const resultPromise = getMessageData("result");
+        iframe.contentWindow.postMessage({type: "create-credential", addUserActivation: true}, {targetOrigin: targetOrigin});
+        const data = await resultPromise;
+
+        assert_equals(data.result, "success", `Expected success but got error: "${data.errorMessage}"`);
+    }, "create() in cross-origin iframe succeeds with permissions policy and user activation");
+
+    promise_test(async (test) => {
+        const src = `${targetOrigin}/webauthn/resources/webauthn-subframe.sub.html`;
+        const iframe = await createIframe(test, src, "publickey-credentials-create");
+
+        // For this call, we have a user activation in this main frame, but not
+        // in the iframe. That shouldn't be sufficient - the user activation has
+        // to be on the iframe itself.
+        await test_driver.bless("create credential, main frame activation");
+        const resultPromise = getMessageData("result");
+        iframe.contentWindow.postMessage({type: "create-credential", addUserActivation: false}, {targetOrigin: targetOrigin});
+        const data = await resultPromise;
+
+        assert_equals(data.result, "failure");
+        assert_equals(data.error.name, "NotAllowedError");
+    }, "create() in cross-origin iframe requires user activation on the iframe, not the main frame");
+});
+</script>
+
diff --git a/tests/wpt/tests/webauthn/resources/webauthn-subframe.sub.html b/tests/wpt/tests/webauthn/resources/webauthn-subframe.sub.html
new file mode 100644
index 00000000000..c97255924e1
--- /dev/null
+++ b/tests/wpt/tests/webauthn/resources/webauthn-subframe.sub.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>WebAuthn test subframe</title>
+<script src=../helpers.js></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+
+<script>
+    "use strict";
+
+    function reportResult(outcome, errorObj) {
+        window.top.postMessage({"type": "result", "result": outcome, "error": errorObj}, "*");
+    }
+
+    async function createCredentialAndReportResult(addUserActivation) {
+        if (addUserActivation) {
+            await test_driver.bless("create credential");
+        }
+
+        try {
+            await createCredential();
+            reportResult("success");
+        } catch (e) {
+            reportResult("failure", e);
+        }
+    }
+
+    window.addEventListener("message", e => {
+        if (e.data.type == "create-credential") {
+            createCredentialAndReportResult(e.data.addUserActivation);
+            return;
+        }
+        throw new Error(`Unrecognized message, e.data.type: ${e.data.type}`);
+    });
+
+    test_driver.set_test_context(window.top);
+    window.top.postMessage({"type": "subframe-loaded"}, "*");
+</script>
diff --git a/tests/wpt/tests/webdriver/tests/bidi/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/__init__.py
index cae2e2576d6..98b670f89f1 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/__init__.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/__init__.py
@@ -1,5 +1,4 @@
-from typing import Any, Callable, Dict, Mapping
-
+from typing import Any, Callable, Dict, List, Mapping
 from webdriver.bidi.modules.script import ContextTarget
 
 
@@ -11,15 +10,14 @@ def recursive_compare(expected: Any, actual: Any) -> None:
         expected(actual)
         return
 
-    assert type(expected) is type(actual)
-    if type(expected) is list:
+    if isinstance(actual, List) and isinstance(expected, List):
         assert len(expected) == len(actual)
         for index, _ in enumerate(expected):
             recursive_compare(expected[index], actual[index])
         return
 
-    if type(expected) is dict:
-        # Actual dict can have more keys as part of the forwards-compat design.
+    if isinstance(actual, Dict) and isinstance(expected, Dict):
+        # Actual Mapping can have more keys as part of the forwards-compat design.
         assert (
             expected.keys() <= actual.keys()
         ), f"Key set should be present: {set(expected.keys()) - set(actual.keys())}"
diff --git a/tests/wpt/tests/webdriver/tests/bidi/external/permissions/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/__init__.py
new file mode 100644
index 00000000000..b8f6358d617
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/__init__.py
@@ -0,0 +1,23 @@
+from typing import Any, Mapping
+
+from webdriver.bidi.modules.script import ContextTarget
+
+async def get_permission_state(bidi_session, context: Mapping[str, Any], name: str) -> str:
+    result = await bidi_session.script.call_function(
+        function_declaration="""() => {
+          return navigator.permissions.query({ name: '%s' })
+            .then(val => val.state, err => err.message)
+        }""" % name,
+        target=ContextTarget(context["context"]),
+        await_promise=True)
+    return result["value"]
+
+
+async def get_context_origin(bidi_session, context: Mapping[str, Any]) -> str:
+    result = await bidi_session.script.call_function(
+        function_declaration="""() => {
+          return window.location.origin;
+        }""",
+        target=ContextTarget(context["context"]),
+        await_promise=False)
+    return result["value"]
diff --git a/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/invalid.py
new file mode 100644
index 00000000000..0ef8c57f415
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/invalid.py
@@ -0,0 +1,54 @@
+import pytest
+import webdriver.bidi.error as error
+from webdriver.bidi.undefined import UNDEFINED
+
+pytestmark = pytest.mark.asyncio
+
+@pytest.mark.parametrize("descriptor", [False, "SOME_STRING", 42, {}, [], {"name": 23}, None, UNDEFINED])
+async def test_params_descriptor_invalid_type(bidi_session, descriptor):
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+         descriptor=descriptor,
+         state="granted",
+         origin="https://example.com",
+      )
+
+
+@pytest.mark.parametrize("descriptor", [{"name": "unknown"}])
+async def test_params_descriptor_invalid_value(bidi_session, descriptor):
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+         descriptor=descriptor,
+         state="granted",
+         origin="https://example.com",
+      )
+
+
+@pytest.mark.parametrize("state", [False, 42, {}, [], None, UNDEFINED])
+async def test_params_state_invalid_type(bidi_session, state):
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+         descriptor={"name": "geolocation"},
+         state=state,
+         origin="https://example.com",
+      )
+
+
+@pytest.mark.parametrize("state", ["UNKOWN", "Granted"])
+async def test_params_state_invalid_value(bidi_session, state):
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+         descriptor={"name": "geolocation"},
+         state=state,
+         origin="https://example.com",
+      )
+
+
+@pytest.mark.parametrize("origin", [False, 42, {}, [], None, UNDEFINED])
+async def test_params_origin_invalid_type(bidi_session, origin):
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+         descriptor={"name": "geolocation"},
+         state="granted",
+         origin=origin,
+      )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/set_permission.py b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/set_permission.py
new file mode 100644
index 00000000000..dc6ca14a8d5
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/external/permissions/set_permission/set_permission.py
@@ -0,0 +1,105 @@
+import pytest
+import webdriver.bidi.error as error
+
+from . import get_context_origin, get_permission_state
+
+pytestmark = pytest.mark.asyncio
+
+@pytest.mark.asyncio
+async def test_set_permission(bidi_session, new_tab, url):
+    test_url = url("/common/blank.html", protocol="https")
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"],
+        url=test_url,
+        wait="complete",
+    )
+
+    origin = await get_context_origin(bidi_session, new_tab)
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "prompt"
+
+    await bidi_session.permissions.set_permission(
+        descriptor={"name": "geolocation"},
+        state="granted",
+        origin=origin,
+    )
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "granted"
+
+    await bidi_session.permissions.set_permission(
+        descriptor={"name": "geolocation"},
+        state="denied",
+        origin=origin,
+    )
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "denied"
+
+    await bidi_session.permissions.set_permission(
+        descriptor={"name": "geolocation"},
+        state="prompt",
+        origin=origin,
+    )
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "prompt"
+
+
+@pytest.mark.asyncio
+async def test_set_permission_insecure_context(bidi_session, new_tab, url):
+    test_url = url("/common/blank.html", protocol="http")
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"],
+        url=test_url,
+        wait="complete",
+    )
+
+    origin = await get_context_origin(bidi_session, new_tab)
+
+    with pytest.raises(error.InvalidArgumentException):
+      await bidi_session.permissions.set_permission(
+          descriptor={"name": "push"},
+          state="granted",
+          origin=origin,
+      )
+
+@pytest.mark.asyncio
+async def test_set_permission_new_context(bidi_session, new_tab, url):
+    test_url = url("/common/blank.html", protocol="https")
+
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"],
+        url=test_url,
+        wait="complete",
+    )
+
+    origin = await get_context_origin(bidi_session, new_tab)
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "prompt"
+
+    await bidi_session.permissions.set_permission(
+        descriptor={"name": "geolocation"},
+        state="granted",
+        origin=origin,
+    )
+
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "granted"
+
+    new_context = await bidi_session.browsing_context.create(type_hint="tab")
+    assert new_tab["context"] != new_context["context"]
+    await bidi_session.browsing_context.navigate(
+        context=new_context["context"],
+        url=test_url,
+        wait="complete",
+    )
+
+    # See https://github.com/w3c/permissions/issues/437.
+    assert await get_permission_state(bidi_session, new_context,  "geolocation") == "granted"
+
+
+@pytest.mark.parametrize("origin", ['UNKNOWN', ''])
+async def test_set_permission_origin_unknown(bidi_session, new_tab, origin):
+    await bidi_session.permissions.set_permission(
+        descriptor={"name": "geolocation"},
+        state="granted",
+        origin=origin,
+    )
+    assert await get_permission_state(bidi_session, new_tab,  "geolocation") == "prompt"
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/fail_request/request.py b/tests/wpt/tests/webdriver/tests/bidi/network/fail_request/request.py
new file mode 100644
index 00000000000..368e46ebe50
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/fail_request/request.py
@@ -0,0 +1,29 @@
+import pytest
+
+from .. import (
+    assert_fetch_error_event,
+    PAGE_EMPTY_TEXT,
+    FETCH_ERROR_EVENT,
+)
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("phase", ["beforeRequestSent", "responseStarted"])
+async def test_phases(
+    setup_blocked_request, subscribe_events, wait_for_event, bidi_session, url, phase
+):
+    request = await setup_blocked_request(phase)
+    await subscribe_events(events=[FETCH_ERROR_EVENT])
+
+    on_fetch_error = wait_for_event(FETCH_ERROR_EVENT)
+    await bidi_session.network.fail_request(request=request)
+    await on_fetch_error
+
+    fetch_error_event = await on_fetch_error
+    expected_request = {"method": "GET", "url": url(PAGE_EMPTY_TEXT)}
+    assert_fetch_error_event(
+        fetch_error_event,
+        expected_request=expected_request,
+        redirect_count=0,
+    )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/storage/__init__.py
index e69de29bb2d..763e0054f1d 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/storage/__init__.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/__init__.py
@@ -0,0 +1,75 @@
+from typing import Optional
+from webdriver.bidi.modules.network import NetworkBytesValue, NetworkStringValue
+from webdriver.bidi.modules.storage import PartialCookie, PartitionDescriptor
+from .. import any_int, recursive_compare
+
+COOKIE_NAME = 'SOME_COOKIE_NAME'
+COOKIE_VALUE = NetworkStringValue('SOME_COOKIE_VALUE')
+
+
+async def assert_cookie_is_not_set(bidi_session, name: str = COOKIE_NAME):
+    """
+    Asserts the cookie is not set.
+    """
+    all_cookies = await bidi_session.storage.get_cookies()
+    assert 'cookies' in all_cookies
+    assert not any(c for c in all_cookies['cookies'] if c['name'] == name)
+
+
+async def assert_cookie_is_set(
+        bidi_session,
+        domain: str,
+        name: str = COOKIE_NAME,
+        value: str = COOKIE_VALUE,
+        path: str = "/",
+        http_only: bool = False,
+        secure: bool = True,
+        same_site: str = 'none',
+        expiry: Optional[int] = None,
+        partition: Optional[PartitionDescriptor] = None,
+):
+    """
+    Asserts the cookie is set.
+    """
+    all_cookies = await bidi_session.storage.get_cookies(partition=partition)
+    assert 'cookies' in all_cookies
+    actual_cookie = next(c for c in all_cookies['cookies'] if c['name'] == name)
+    expected_cookie = {
+        'domain': domain,
+        'httpOnly': http_only,
+        'name': name,
+        'path': path,
+        'sameSite': same_site,
+        'secure': secure,
+        # Varies depending on the cookie name and value.
+        'size': any_int,
+        'value': value,
+    }
+    if expiry is not None:
+        expected_cookie['expiry'] = expiry
+
+    recursive_compare(expected_cookie, actual_cookie)
+
+
+def create_cookie(
+        domain: str,
+        name: str = COOKIE_NAME,
+        value: NetworkBytesValue = COOKIE_VALUE,
+        secure: Optional[bool] = True,
+        path: Optional[str] = None,
+        http_only: Optional[bool] = None,
+        same_site: Optional[str] = None,
+        expiry: Optional[int] = None,
+) -> PartialCookie:
+    """
+    Creates a cookie with the given or default options.
+    """
+    return PartialCookie(
+        domain=domain,
+        name=name,
+        value=value,
+        path=path,
+        http_only=http_only,
+        secure=secure,
+        same_site=same_site,
+        expiry=expiry)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_domain.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_domain.py
new file mode 100644
index 00000000000..ef09fb3f7b2
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_domain.py
@@ -0,0 +1,19 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "domain_key, subdomain_key",
+    [
+        ("", ""),
+        ("", "www"),
+        ("alt", ""),
+        ("alt", "www"),
+    ])
+async def test_cookie_domain(bidi_session, test_page, domain_value, domain_key, subdomain_key):
+    domain = domain_value(domain_key, subdomain_key)
+
+    await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain))
+    await assert_cookie_is_set(bidi_session, domain=domain)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_expiry.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_expiry.py
new file mode 100644
index 00000000000..79f02d31060
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_expiry.py
@@ -0,0 +1,51 @@
+import pytest
+from .. import assert_cookie_is_not_set, assert_cookie_is_set, create_cookie
+from datetime import datetime, timedelta
+import time
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_cookie_expiry_unset(bidi_session, test_page, domain_value):
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(
+            domain=domain_value(),
+            expiry=None))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    await assert_cookie_is_set(bidi_session, expiry=None, domain=domain_value())
+
+
+async def test_cookie_expiry_future(bidi_session, test_page, domain_value):
+    tomorrow = datetime.now() + timedelta(1)
+    tomorrow_timestamp = time.mktime(tomorrow.timetuple())
+
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(
+            domain=domain_value(),
+            expiry=tomorrow_timestamp))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    await assert_cookie_is_set(bidi_session, expiry=tomorrow_timestamp, domain=domain_value())
+
+
+async def test_cookie_expiry_past(bidi_session, test_page, domain_value):
+    yesterday = datetime.now() - timedelta(1)
+    yesterday_timestamp = time.mktime(yesterday.timetuple())
+
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(
+            domain=domain_value(),
+            expiry=yesterday_timestamp))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    await assert_cookie_is_not_set(bidi_session)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_http_only.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_http_only.py
new file mode 100644
index 00000000000..f5e1bf9a3d1
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_http_only.py
@@ -0,0 +1,29 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "http_only",
+    [
+        True,
+        False,
+        None
+    ])
+async def test_cookie_http_only(bidi_session, test_page, domain_value, http_only):
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value(), http_only=http_only))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    # `httpOnly` defaults to `false`.
+    expected_http_only = http_only if http_only is not None else False
+
+    await assert_cookie_is_set(
+        bidi_session,
+        domain=domain_value(),
+        http_only=expected_http_only,
+    )
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_name.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_name.py
new file mode 100644
index 00000000000..f2d967534a2
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_name.py
@@ -0,0 +1,16 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "name",
+    [
+        "",
+        "cookie name with special symbols !@#$%&*()_+-{}[]|\\:\"'<>,.?/`~",
+        "123cookie",
+    ])
+async def test_cookie_name(bidi_session, test_page, domain_value, name):
+    await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), name=name))
+    await assert_cookie_is_set(bidi_session, name=name, domain=domain_value())
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_path.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_path.py
new file mode 100644
index 00000000000..2395b032a69
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_path.py
@@ -0,0 +1,25 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "path",
+    [
+        "/",
+        "/some_path",
+        "/some/nested/path",
+        None
+    ]
+)
+async def test_cookie_path(bidi_session, test_page, domain_value, path):
+    set_cookie_result = await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), path=path))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    # `path` defaults to "/".
+    expected_path = path if path is not None else "/"
+    await assert_cookie_is_set(bidi_session, path=expected_path, domain=domain_value())
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_same_site.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_same_site.py
new file mode 100644
index 00000000000..05f4790a80e
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_same_site.py
@@ -0,0 +1,26 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "same_site",
+    [
+        "strict",
+        "lax",
+        "none",
+        None
+    ]
+)
+async def test_cookie_secure(bidi_session, test_page, domain_value, same_site):
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value(), same_site=same_site))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    # `same_site` defaults to "none".
+    expected_same_site = same_site if same_site is not None else 'none'
+    await assert_cookie_is_set(bidi_session, domain=domain_value(), same_site=expected_same_site)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_secure.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_secure.py
new file mode 100644
index 00000000000..6da5991c11d
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_secure.py
@@ -0,0 +1,25 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "secure",
+    [
+        True,
+        False,
+        None
+    ]
+)
+async def test_cookie_secure(bidi_session, test_page, domain_value, secure):
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value(), secure=secure))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    # `secure` defaults to `false`.
+    expected_secure = secure if secure is not None else False
+    await assert_cookie_is_set(bidi_session, domain=domain_value(), secure=expected_secure)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_value.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_value.py
new file mode 100644
index 00000000000..5ecd8354573
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/cookie_value.py
@@ -0,0 +1,20 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+from webdriver.bidi.modules.network import NetworkStringValue
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "str_value",
+    [
+        "simple_value",
+        "special_symbols =!@#$%^&*()_+-{}[]|\\:\"'<>,.?/`~"
+    ])
+async def test_cookie_value_string(bidi_session, test_page, domain_value, str_value):
+    value = NetworkStringValue(str_value)
+
+    await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), value=value))
+    await assert_cookie_is_set(bidi_session, value=value, domain=domain_value())
+
+# TODO: test `test_cookie_value_base64`.
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/invalid.py
new file mode 100644
index 00000000000..9c3e5cbe1dd
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/invalid.py
@@ -0,0 +1,159 @@
+import pytest
+from .. import create_cookie
+import webdriver.bidi.error as error
+from webdriver.bidi.modules.network import NetworkStringValue
+from webdriver.bidi.modules.storage import BrowsingContextPartitionDescriptor, StorageKeyPartitionDescriptor
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("domain", [None, False, 42, {}, []])
+async def test_cookie_domain_invalid_type(bidi_session, test_page, domain):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain))
+
+
+@pytest.mark.parametrize("expiry", [False, "SOME_STRING_VALUE", {}, []])
+async def test_cookie_expiry_invalid_type(bidi_session, test_page, domain_value, expiry):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), expiry=expiry))
+
+
+@pytest.mark.parametrize("http_only", [42, "SOME_STRING_VALUE", {}, []])
+async def test_cookie_http_only_invalid_type(bidi_session, test_page, domain_value, http_only):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), http_only=http_only))
+
+
+@pytest.mark.parametrize(
+    "name",
+    [
+        " cookieName",
+        "cookie=name",
+        "cookie\tname",
+        "cookie\nname",
+        "cookie\x01name",
+        "cookie\x0Fname",
+        "cookie;name",
+    ])
+async def test_cookie_name_invalid_value(bidi_session, test_page, domain_value, name):
+    with pytest.raises(error.UnableToSetCookieException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), name=name))
+
+
+@pytest.mark.parametrize("name", [None, False, 42, {}, []])
+async def test_cookie_name_invalid_type(bidi_session, test_page, domain_value, name):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), name=name))
+
+
+@pytest.mark.parametrize(
+    "path",
+    [
+        ""
+        "no_leading_forward_slash"
+    ]
+)
+async def test_cookie_path_invalid_value(bidi_session, test_page, domain_value, path):
+    with pytest.raises(error.UnableToSetCookieException):
+        await bidi_session.storage.set_cookie(
+            cookie=create_cookie(domain=domain_value(), path=path))
+
+
+@pytest.mark.parametrize("path", [False, 42, {}, []])
+async def test_cookie_path_invalid_type(bidi_session, test_page, domain_value, path):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(
+            cookie=create_cookie(domain=domain_value(), path=path))
+
+
+@pytest.mark.parametrize("same_site", ["", "INVALID_SAME_SITE_STATE"])
+async def test_cookie_same_site_invalid_value(bidi_session, test_page, domain_value, same_site):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), same_site=same_site))
+
+
+@pytest.mark.parametrize("same_site", [42, False, {}, []])
+async def test_cookie_same_site_invalid_type(bidi_session, test_page, domain_value, same_site):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), same_site=same_site))
+
+
+@pytest.mark.parametrize("secure", [42, "SOME_STRING_VALUE", {}, []])
+async def test_cookie_secure_invalid_type(bidi_session, test_page, domain_value, secure):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), secure=secure))
+
+
+@pytest.mark.parametrize("value", [None, False, 42, "SOME_STRING_VALUE", {}, {"type": "SOME_INVALID_TYPE"}, []])
+async def test_cookie_value_invalid_type(bidi_session, test_page, domain_value, value):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), value=value))
+
+
+@pytest.mark.parametrize(
+    "str_value",
+    [
+        "value\twith\ttab",
+        "value\nwith\nnewline",
+        "value;with;semicolon",
+    ])
+async def test_cookie_value_string_invalid_value(bidi_session, test_page, domain_value, str_value):
+    value = NetworkStringValue(str_value)
+
+    with pytest.raises(error.UnableToSetCookieException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), value=value))
+
+
+@pytest.mark.parametrize("str_value", [None, False, 42, {}, []])
+async def test_cookie_value_string_invalid_type(bidi_session, test_page, domain_value, str_value):
+    value = NetworkStringValue(str_value)
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value(), value=value))
+
+
+@pytest.mark.parametrize("partition", [42, False, "SOME_STRING_VALUE", {}, {"type": "SOME_INVALID_TYPE"}, []])
+async def test_partition_invalid_type(bidi_session, test_page, domain_value, partition):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()), partition=partition)
+
+
+@pytest.mark.parametrize("browsing_context", [None, 42, False, {}, []])
+async def test_partition_context_invalid_type(bidi_session, test_page, origin, domain_value, browsing_context):
+    partition = BrowsingContextPartitionDescriptor(browsing_context)
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()), partition=partition)
+
+
+async def test_partition_context_unknown(bidi_session, test_page, origin, domain_value):
+    partition = BrowsingContextPartitionDescriptor("UNKNOWN_CONTEXT")
+
+    with pytest.raises(error.NoSuchFrameException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()), partition=partition)
+
+
+@pytest.mark.parametrize("source_origin", [42, False, {}, []])
+async def test_partition_storage_key_source_origin_invalid_type(bidi_session, test_page, origin, domain_value,
+                                                                source_origin):
+    partition = StorageKeyPartitionDescriptor(source_origin=source_origin)
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()), partition=partition)
+
+
+@pytest.mark.parametrize("user_context", [42, False, {}, []])
+async def test_partition_storage_key_user_context_invalid_type(bidi_session, test_page, origin, domain_value,
+                                                               user_context):
+    partition = StorageKeyPartitionDescriptor(user_context=user_context)
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()), partition=partition)
+
+# TODO: test `test_cookie_domain_invalid_value`.
+# TODO: test `test_partition_storage_key_user_context_unknown`.
+# TODO: test `test_partition_storage_key_user_context_invalid_type`.
+# TODO: test `test_cookie_value_missing`.
+# TODO: test `test_cookie_value_base64_invalid_type`.
+# TODO: test `test_cookie_value_base64_invalid_value`.
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/page_protocols.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/page_protocols.py
new file mode 100644
index 00000000000..c021c2fc26e
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/page_protocols.py
@@ -0,0 +1,22 @@
+import pytest
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "protocol",
+    [
+        "http",
+        "https",
+    ]
+)
+async def test_page_protocols(bidi_session, get_test_page, domain_value, protocol):
+    set_cookie_result = await bidi_session.storage.set_cookie(cookie=create_cookie(domain=domain_value()))
+
+    assert set_cookie_result == {
+        'partitionKey': {},
+    }
+
+    # Assert the cookie is actually set.
+    await assert_cookie_is_set(bidi_session, domain=domain_value())
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/partition.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/partition.py
new file mode 100644
index 00000000000..b7a4a052ca0
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/partition.py
@@ -0,0 +1,74 @@
+import pytest
+from webdriver.bidi.modules.storage import BrowsingContextPartitionDescriptor, StorageKeyPartitionDescriptor
+from .. import assert_cookie_is_set, create_cookie
+
+pytestmark = pytest.mark.asyncio
+
+
+async def test_partition_context(bidi_session, top_context, test_page, origin, domain_value):
+    await bidi_session.browsing_context.navigate(context=top_context["context"], url=test_page, wait="complete")
+
+    source_origin = origin()
+    partition = BrowsingContextPartitionDescriptor(top_context["context"])
+
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value()),
+        partition=partition)
+
+    assert set_cookie_result == {
+        'partitionKey': {
+            'sourceOrigin': source_origin
+        },
+    }
+
+    await assert_cookie_is_set(bidi_session, domain=domain_value(), partition=partition)
+
+
+async def test_partition_context_frame(bidi_session, top_context, test_page, origin, domain_value,
+                                       inline, test_page_cross_origin_frame):
+    frame_url = inline("<div>bar</div>", domain="alt")
+    frame_source_origin = origin(domain="alt")
+    root_page_url = inline(f"<iframe src='{frame_url}'></iframe>")
+
+    # Navigate to a page with a frame.
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"],
+        url=root_page_url,
+        wait="complete",
+    )
+
+    all_contexts = await bidi_session.browsing_context.get_tree(root=top_context["context"])
+    frame_context_id = all_contexts[0]["children"][0]["context"]
+
+    partition = BrowsingContextPartitionDescriptor(frame_context_id)
+
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value()),
+        partition=partition)
+
+    assert set_cookie_result == {
+        'partitionKey': {
+            'sourceOrigin': frame_source_origin
+        },
+    }
+
+    await assert_cookie_is_set(bidi_session, domain=domain_value(), partition=partition)
+
+
+async def test_partition_storage_key_source_origin(bidi_session, test_page, origin, domain_value):
+    source_origin = origin()
+    partition = StorageKeyPartitionDescriptor(source_origin=source_origin)
+
+    set_cookie_result = await bidi_session.storage.set_cookie(
+        cookie=create_cookie(domain=domain_value()),
+        partition=partition)
+
+    assert set_cookie_result == {
+        'partitionKey': {
+            'sourceOrigin': source_origin
+        },
+    }
+
+    await assert_cookie_is_set(bidi_session, domain=domain_value(), partition=partition)
+
+# TODO: test `test_partition_storage_key_user_context`.
diff --git a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/set_cookie.py b/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/set_cookie.py
deleted file mode 100644
index 7e4f3dbb9b0..00000000000
--- a/tests/wpt/tests/webdriver/tests/bidi/storage/set_cookie/set_cookie.py
+++ /dev/null
@@ -1,60 +0,0 @@
-import pytest
-from webdriver.bidi.modules.network import NetworkStringValue
-from webdriver.bidi.modules.storage import PartialCookie, BrowsingContextPartitionDescriptor
-
-pytestmark = pytest.mark.asyncio
-
-
-@pytest.mark.parametrize(
-    "protocol",
-    [
-        "http",
-        "https",
-    ],
-)
-async def test_set_cookie_protocol(bidi_session, top_context, inline, origin, domain_value, protocol):
-    # Navigate to a page with a required protocol.
-    await bidi_session.browsing_context.navigate(
-        context=top_context["context"], url=(inline("<div>foo</div>", protocol=protocol)), wait="complete"
-    )
-
-    source_origin = origin(protocol)
-    partition = BrowsingContextPartitionDescriptor(top_context["context"])
-
-    set_cookie_result = await bidi_session.storage.set_cookie(
-        cookie=PartialCookie(
-            name='foo',
-            value=NetworkStringValue('bar'),
-            domain=domain_value(),
-            secure=True
-        ),
-        partition=partition)
-
-    assert set_cookie_result == {
-        'partitionKey': {
-            'sourceOrigin': source_origin
-        },
-    }
-
-    # Assert the cookie is actually set.
-    actual_cookies = await bidi_session.storage.get_cookies(partition=partition)
-    assert actual_cookies == {
-        'cookies': [
-            {
-                'domain': domain_value(),
-                'httpOnly': False,
-                'name': 'foo',
-                'path': '/',
-                'sameSite': 'none',
-                'secure': True,
-                'size': 6,
-                'value': {
-                    'type': 'string',
-                    'value': 'bar',
-                },
-            },
-        ],
-        'partitionKey': {
-            'sourceOrigin': source_origin,
-        },
-    }
diff --git a/tests/wpt/tests/webidl/ecmascript-binding/global-mutable-prototype.any.js b/tests/wpt/tests/webidl/ecmascript-binding/global-mutable-prototype.any.js
new file mode 100644
index 00000000000..eba96e9adf4
--- /dev/null
+++ b/tests/wpt/tests/webidl/ecmascript-binding/global-mutable-prototype.any.js
@@ -0,0 +1,27 @@
+// META: global=shadowrealm
+// META: title=Mutability of the global prototype chain
+
+const objects = [];
+setup(() => {
+  for (let object = self; object; object = Object.getPrototypeOf(object)) {
+    objects.push(object);
+  }
+});
+
+test(() => {
+  for (const object of objects) {
+    const proto = Object.getPrototypeOf(object);
+    const plainObject = {};
+    Object.setPrototypeOf(object, plainObject);
+    assert_equals(Object.getPrototypeOf(object), plainObject);
+    Object.setPrototypeOf(object, proto);
+  }
+}, "Setting to a different prototype");
+
+test(() => {
+  for (const object of objects) {
+    const expected = Object.getPrototypeOf(object);
+    Object.setPrototypeOf(object, expected);
+    assert_equals(Object.getPrototypeOf(object), expected);
+  }
+}, "Setting to the same prototype");
diff --git a/tests/wpt/tests/webnn/squeeze.https.any.js b/tests/wpt/tests/webnn/gather.https.any.js
similarity index 60%
rename from tests/wpt/tests/webnn/squeeze.https.any.js
rename to tests/wpt/tests/webnn/gather.https.any.js
index 8b9310d65d4..52bcece8043 100644
--- a/tests/wpt/tests/webnn/squeeze.https.any.js
+++ b/tests/wpt/tests/webnn/gather.https.any.js
@@ -1,10 +1,10 @@
-// META: title=test WebNN API squeeze operation
+// META: title=test WebNN API gather operation
 // META: global=window,dedicatedworker
 // META: script=./resources/utils.js
 // META: timeout=long
 
 'use strict';
 
-// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-squeeze
+// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-gather
 
-testWebNNOperation('squeeze', buildOperationWithSingleInput);
\ No newline at end of file
+testWebNNOperation('gather', buildOperationWithTwoInputs);
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/gpu/squeeze.https.any.js b/tests/wpt/tests/webnn/gpu/gather.https.any.js
similarity index 58%
rename from tests/wpt/tests/webnn/gpu/squeeze.https.any.js
rename to tests/wpt/tests/webnn/gpu/gather.https.any.js
index 29ce3e4f91b..7c8a685c5cb 100644
--- a/tests/wpt/tests/webnn/gpu/squeeze.https.any.js
+++ b/tests/wpt/tests/webnn/gpu/gather.https.any.js
@@ -1,10 +1,10 @@
-// META: title=test WebNN API squeeze operation
+// META: title=test WebNN API gather operation
 // META: global=window,dedicatedworker
 // META: script=../resources/utils.js
 // META: timeout=long
 
 'use strict';
 
-// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-squeeze
+// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-gather
 
-testWebNNOperation('squeeze', buildOperationWithSingleInput, 'gpu');
\ No newline at end of file
+testWebNNOperation('gather', buildOperationWithTwoInputs, 'gpu');
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/gpu/layer_normalization.https.any.js b/tests/wpt/tests/webnn/gpu/layer_normalization.https.any.js
new file mode 100644
index 00000000000..1deb43bee5d
--- /dev/null
+++ b/tests/wpt/tests/webnn/gpu/layer_normalization.https.any.js
@@ -0,0 +1,10 @@
+// META: title=test WebNN API layerNormalization operation
+// META: global=window,dedicatedworker
+// META: script=../resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-layernorm
+
+testWebNNOperation('layerNormalization', buildLayerNorm, 'gpu');
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/layer_normalization.https.any.js b/tests/wpt/tests/webnn/layer_normalization.https.any.js
new file mode 100644
index 00000000000..380db4ea528
--- /dev/null
+++ b/tests/wpt/tests/webnn/layer_normalization.https.any.js
@@ -0,0 +1,10 @@
+// META: title=test WebNN API layerNormalization operation
+// META: global=window,dedicatedworker
+// META: script=./resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-layernorm
+
+testWebNNOperation('layerNormalization', buildLayerNorm);
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/test_data/abs.json b/tests/wpt/tests/webnn/resources/test_data/abs.json
index c59054c3e50..d665da6bb45 100644
--- a/tests/wpt/tests/webnn/resources/test_data/abs.json
+++ b/tests/wpt/tests/webnn/resources/test_data/abs.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "abs float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            49.8372426667043,
+            82.0929095991747,
+            3.1989055476550305,
+            85.20904780506325,
+            88.94609443980977,
+            -91.0352208007506,
+            31.448491185882546,
+            -29.311109216503752,
+            -92.44773429213686,
+            -15.520709757433963,
+            80.91279287806162,
+            -38.209706112466705,
+            53.064761629102065,
+            99.6537077669756,
+            -21.28504881273652,
+            90.019831849408,
+            18.324518254754622,
+            -33.06915295290382,
+            30.097660827399608,
+            -74.21503493794903,
+            95.60974816793694,
+            6.61428748549389,
+            31.283208179548808,
+            -53.20605974670913
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          49.837242126464844,
+          82.09291076660156,
+          3.1989054679870605,
+          85.20904541015625,
+          88.94609069824219,
+          91.03521728515625,
+          31.4484920501709,
+          29.31110954284668,
+          92.4477310180664,
+          15.520709991455078,
+          80.91279602050781,
+          38.2097053527832,
+          53.064762115478516,
+          99.6537094116211,
+          21.285049438476562,
+          90.01982879638672,
+          18.32451820373535,
+          33.06915283203125,
+          30.097660064697266,
+          74.21503448486328,
+          95.60974884033203,
+          6.614287376403809,
+          31.2832088470459,
+          53.206058502197266
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "abs float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/add.json b/tests/wpt/tests/webnn/resources/test_data/add.json
index 0a12871ceba..dba361228bd 100644
--- a/tests/wpt/tests/webnn/resources/test_data/add.json
+++ b/tests/wpt/tests/webnn/resources/test_data/add.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "add float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -43.33331702607182,
+            -67.89795492110251,
+            26.462739729601154,
+            36.74276245870831,
+            -65.1773897660934,
+            -87.70664817075895,
+            65.2788147914111,
+            -74.05226258410215,
+            -13.82780997496917,
+            6.9814867885681196,
+            99.8375201051771,
+            55.80233785150233,
+            -75.57196245651672,
+            11.499508337009786,
+            17.110109711325364,
+            95.81167418402984,
+            57.447496690075326,
+            -57.17587415294769,
+            27.71905326607728,
+            -18.21920899392113,
+            52.65309891626177,
+            -69.9945556346263,
+            39.82165678962866,
+            -29.986529326327684
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            -59.74972612329861,
+            -44.814940102501396,
+            -87.93879800134108,
+            1.884336371742009,
+            84.89464239219592,
+            47.55365421202336,
+            85.64292769131902,
+            43.02861451385175,
+            -60.25821191056049,
+            15.606167000302435,
+            70.60614780317951,
+            -7.454866177806224,
+            -30.206895875534997,
+            -97.69825508598404,
+            -0.009843301412843175,
+            -77.6796011606304,
+            30.19668513874859,
+            -59.19006932092632,
+            89.35886332586315,
+            28.679809244991418,
+            -29.72130634585804,
+            -90.63522901925083,
+            28.281854673339666,
+            27.66254066077893
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -103.08303833007812,
+          -112.71289825439453,
+          -61.47605895996094,
+          38.627098083496094,
+          19.717254638671875,
+          -40.15299606323242,
+          150.9217529296875,
+          -31.02364730834961,
+          -74.08602142333984,
+          22.58765411376953,
+          170.44366455078125,
+          48.34747314453125,
+          -105.77885437011719,
+          -86.19874572753906,
+          17.100265502929688,
+          18.13207244873047,
+          87.64418029785156,
+          -116.3659439086914,
+          117.07791900634766,
+          10.460599899291992,
+          22.931793212890625,
+          -160.62979125976562,
+          68.10350799560547,
+          -2.3239879608154297
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "add float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/arg_max.json b/tests/wpt/tests/webnn/resources/test_data/arg_max.json
index 9af47a95894..d2fe9e62caf 100644
--- a/tests/wpt/tests/webnn/resources/test_data/arg_max.json
+++ b/tests/wpt/tests/webnn/resources/test_data/arg_max.json
@@ -1,5 +1,49 @@
 {
   "tests": [
+    {
+      "name": "argMax float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            -51.0936194154457,
+            -6.5397018645619625,
+            73.81338015899149,
+            88.46114630531724,
+            -5.294266751122791,
+            -79.20668057325759,
+            -41.70176598864654,
+            73.81338015899149,
+            88.46114630531724,
+            -84.939998758247,
+            -61.488942502520906,
+            -98.33874402761955,
+            -51.0936194154457,
+            -6.5397018645619625,
+            73.81338015899149,
+            88.46114630531724,
+            -5.294266751122791,
+            -79.20668057325759,
+            -41.70176598864654,
+            73.81338015899149,
+            88.46114630531724,
+            -84.939998758247,
+            -61.488942502520906,
+            -98.33874402761955
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [],
+        "data": [
+          3
+        ],
+        "type": "int64"
+      }
+    },
     {
       "name": "argMax float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/arg_min.json b/tests/wpt/tests/webnn/resources/test_data/arg_min.json
index dc0b5cdfd1a..132a2dc3e8b 100644
--- a/tests/wpt/tests/webnn/resources/test_data/arg_min.json
+++ b/tests/wpt/tests/webnn/resources/test_data/arg_min.json
@@ -1,5 +1,49 @@
 {
   "tests": [
+    {
+      "name": "argMin float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            3.830124090690262,
+            -24.986487937638074,
+            5.299982630691289,
+            -48.5486590218902,
+            40.30886781808215,
+            60.184293919409726,
+            -82.78385618759043,
+            -96.50904103637833,
+            71.87028201591897,
+            38.866394268784035,
+            -39.143725517854435,
+            31.444366685561903,
+            -82.78385618759043,
+            -96.50904103637833,
+            -25.53388886326502,
+            -16.142265850469343,
+            66.63677406472371,
+            82.5119815304117,
+            -82.78385618759043,
+            -96.50904103637833,
+            39.7687246127592,
+            42.15040238450999,
+            82.66863662444459,
+            85.4526923278379
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [],
+        "data": [
+          7
+        ],
+        "type": "int64"
+      }
+    },
     {
       "name": "argMin float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/average_pool2d.json b/tests/wpt/tests/webnn/resources/test_data/average_pool2d.json
index 802e0d76462..5a9f4e28b10 100644
--- a/tests/wpt/tests/webnn/resources/test_data/average_pool2d.json
+++ b/tests/wpt/tests/webnn/resources/test_data/average_pool2d.json
@@ -1,5 +1,76 @@
 {
   "tests": [
+    {
+      "name": "averagePool2d float32 4D constant tensor all positive default options",
+      "inputs": {
+        "input": {
+          "shape": [1, 2, 5, 5],
+          "data": [
+            22.975555502750634,
+            78.15438048012338,
+            9.68611138116071,
+            51.29803808129347,
+            32.19308601456918,
+            87.65037289600019,
+            87.25082191311348,
+            39.49793996935087,
+            80.09963591169489,
+            10.220142557736978,
+            52.60270021646585,
+            1.4128639882603933,
+            11.954064466077474,
+            85.0007506374375,
+            64.7837446465813,
+            88.03128735720126,
+            11.333851214909307,
+            70.61659435728073,
+            84.90442561999888,
+            79.06688041781518,
+            7.328724951604215,
+            35.97796581186121,
+            10.17730631094398,
+            1.4140757517112412,
+            78.10038172113374,
+            91.59549689157087,
+            65.64701225681809,
+            55.14215004436653,
+            18.432438840756184,
+            49.34624267439973,
+            15.648024969290454,
+            68.02723372727797,
+            20.342549040418124,
+            26.72794900604616,
+            64.87446829774323,
+            46.56714896227794,
+            79.57832937136276,
+            4.338463748959498,
+            38.18383968382213,
+            45.253981324455175,
+            80.9717996657439,
+            67.58124910163149,
+            6.026499585657263,
+            29.77881349289366,
+            58.58993337807239,
+            2.2384984647495054,
+            14.505490166700486,
+            68.72449589246624,
+            76.45657404642184,
+            23.53263275794233
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 1, 1],
+        "data": [
+          47.26926803588867,
+          44.72445297241211
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "averagePool2d float32 4D tensor all positive default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/batch_normalization.json b/tests/wpt/tests/webnn/resources/test_data/batch_normalization.json
index 19f414bbfea..04ab0d0d6f1 100644
--- a/tests/wpt/tests/webnn/resources/test_data/batch_normalization.json
+++ b/tests/wpt/tests/webnn/resources/test_data/batch_normalization.json
@@ -89,6 +89,98 @@
         "type": "float32"
       }
     },
+    {
+      "name": "batchNormalization float32 2D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [4, 6],
+          "data": [
+            -41.30732967168238,
+            64.08864045143429,
+            -63.376671841233104,
+            -46.7903680211994,
+            83.0222726565018,
+            -80.08049213079853,
+            -62.144380499565784,
+            -0.10012771650340824,
+            -40.902161220312074,
+            56.963061967558474,
+            37.37249789808206,
+            57.04647733193906,
+            82.05679802728304,
+            -86.11642850667623,
+            76.88317547014259,
+            97.03362133579051,
+            -21.35103988063949,
+            -96.93823797160586,
+            -9.359310262561493,
+            80.2082435478892,
+            -85.36802529512583,
+            62.35185227095363,
+            -68.4724340974042,
+            -12.107167478351585
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "mean": {
+          "shape": [6],
+          "data": [
+            -7.814267643537363,
+            -95.6412954353084,
+            38.154405424391285,
+            -55.9520351570133,
+            -87.8650062484926,
+            -41.636455304505525
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "variance": {
+          "shape": [6],
+          "data": [
+            60.311864286118144,
+            26.432604504927436,
+            53.275636661772396,
+            40.146120500534074,
+            59.41098289103077,
+            35.99981828466932
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "shape": [4, 6],
+        "data": [
+          -4.312741756439209,
+          31.068212509155273,
+          -13.910240173339844,
+          1.4459478855133057,
+          22.170541763305664,
+          -6.407354354858398,
+          -6.995829105377197,
+          18.583200454711914,
+          -10.831125259399414,
+          17.820920944213867,
+          16.2480411529541,
+          16.447195053100586,
+          11.57226848602295,
+          1.8526301383972168,
+          5.306026458740234,
+          24.145092010498047,
+          8.629376411437988,
+          -9.216986656188965,
+          -0.1989477425813675,
+          34.203548431396484,
+          -16.923160552978516,
+          18.671411514282227,
+          2.5159497261047363,
+          4.921559810638428
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "batchNormalization float32 2D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/ceil.json b/tests/wpt/tests/webnn/resources/test_data/ceil.json
index 6fa623977fc..b9bccbc3a07 100644
--- a/tests/wpt/tests/webnn/resources/test_data/ceil.json
+++ b/tests/wpt/tests/webnn/resources/test_data/ceil.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "ceil float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            67.38941577648342,
+            36.78218646695805,
+            99.10649131558534,
+            -22.587103876323283,
+            32.70173557917525,
+            17.688807510873474,
+            5.631034848468943,
+            12.965238190762022,
+            83.1319330049133,
+            -29.29246123472926,
+            19.844631250887133,
+            65.27903232818329,
+            26.311109519759952,
+            24.2856723456172,
+            -48.3976724829041,
+            -5.617412380605998,
+            61.53380759105448,
+            -87.81197726868459,
+            69.71428621372127,
+            5.0031021954943355,
+            84.3683411023199,
+            -9.390542062321572,
+            -27.85661776414834,
+            -34.89593295662057
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          68,
+          37,
+          100,
+          -22,
+          33,
+          18,
+          6,
+          13,
+          84,
+          -29,
+          20,
+          66,
+          27,
+          25,
+          -48,
+          -5,
+          62,
+          -87,
+          70,
+          6,
+          85,
+          -9,
+          -27,
+          -34
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "ceil float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/clamp.json b/tests/wpt/tests/webnn/resources/test_data/clamp.json
index 93ab5ca0c1c..0e948f99319 100644
--- a/tests/wpt/tests/webnn/resources/test_data/clamp.json
+++ b/tests/wpt/tests/webnn/resources/test_data/clamp.json
@@ -1,6 +1,73 @@
 {
   "tests": [
     // default options
+    {
+      "name": "clamp float32 1D constant tensor default options",
+      "inputs": {
+        "x": { // use 'x' for input operand name
+          "shape": [24],
+          "data": [
+            -9.817828475355284,
+            -6.024063916325786,
+            -4.072562498632983,
+            -6.575078191902692,
+            -7.7556836912181915,
+            9.524681107378463,
+            3.7292487446449307,
+            6.4816868736447475,
+            -1.5374205904252634,
+            -7.343102426698445,
+            7.880751290929794,
+            -2.056408790509967,
+            6.34386375786449,
+            5.52573787183,
+            0.8433118207347725,
+            -8.19996033345526,
+            -7.786487326213716,
+            9.280223823954241,
+            -2.31305948485121,
+            9.549695091037119,
+            5.788925460130297,
+            5.549378312916486,
+            7.409400528051194,
+            -2.1236145770503745
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -9.817828178405762,
+          -6.024064064025879,
+          -4.0725626945495605,
+          -6.575078010559082,
+          -7.755683898925781,
+          9.524681091308594,
+          3.7292487621307373,
+          6.481687068939209,
+          -1.537420630455017,
+          -7.34310245513916,
+          7.880751132965088,
+          -2.0564088821411133,
+          6.3438639640808105,
+          5.525737762451172,
+          0.8433118462562561,
+          -8.199960708618164,
+          -7.786487102508545,
+          9.280223846435547,
+          -2.3130595684051514,
+          9.549695014953613,
+          5.788925647735596,
+          5.549378395080566,
+          7.409400463104248,
+          -2.123614549636841
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "clamp float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/concat.json b/tests/wpt/tests/webnn/resources/test_data/concat.json
index 4230744e86f..5e2285b75a0 100644
--- a/tests/wpt/tests/webnn/resources/test_data/concat.json
+++ b/tests/wpt/tests/webnn/resources/test_data/concat.json
@@ -1,6 +1,83 @@
 {
   "tests": [
     // concat 1D tensors
+    {
+      "name": "concat two float32 1D constant tensors of same shape along axis 0",
+      "inputs": [
+        {
+          "name": "input1",
+          "shape": [12],
+          "data": [
+            -0.39444134019222243,
+            0.8619825316530809,
+            0.3379962524218807,
+            -0.9906398615400507,
+            0.576785657225761,
+            0.3227640108329237,
+            -0.44735022799701873,
+            0.11028251232581932,
+            -0.5945112749179908,
+            -0.40284849555754754,
+            -0.9531654171044694,
+            -0.6731740531810844
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        {
+          "name": "input2",
+          "shape": [12],
+          "data": [
+            0.4918989118791477,
+            -0.15864110312378976,
+            -0.34188115459083157,
+            -0.9158143500894873,
+            -0.7206121708970712,
+            -0.7993468785008635,
+            0.6653799854931952,
+            0.03886038855553897,
+            0.5182055416768865,
+            -0.8742016938344297,
+            -0.479021891130635,
+            0.1211843166661235
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      ],
+      "axis": 0,
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.3944413363933563,
+          0.861982524394989,
+          0.337996244430542,
+          -0.990639865398407,
+          0.576785683631897,
+          0.32276400923728943,
+          -0.44735023379325867,
+          0.11028251051902771,
+          -0.5945112705230713,
+          -0.402848482131958,
+          -0.9531654119491577,
+          -0.6731740236282349,
+          0.49189892411231995,
+          -0.15864109992980957,
+          -0.3418811559677124,
+          -0.9158143401145935,
+          -0.7206121683120728,
+          -0.7993468642234802,
+          0.6653800010681152,
+          0.03886038810014725,
+          0.5182055234909058,
+          -0.8742017149925232,
+          -0.4790218770503998,
+          0.1211843192577362
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "concat two float32 1D tensors of same shape along axis 0",
       "inputs": [
diff --git a/tests/wpt/tests/webnn/resources/test_data/conv2d.json b/tests/wpt/tests/webnn/resources/test_data/conv2d.json
index 850897df4e1..5f8cd814a90 100644
--- a/tests/wpt/tests/webnn/resources/test_data/conv2d.json
+++ b/tests/wpt/tests/webnn/resources/test_data/conv2d.json
@@ -67,6 +67,75 @@
         "type": "float32"
       }
     },
+    {
+      "name": "conv2d float32 4D both input and filter constant tensors default options",
+      "inputs": {
+        "input": {
+          "shape": [1, 1, 5, 5],
+          "data": [
+            0.6124474607869732,
+            0.8857858599952035,
+            0.13667134799354397,
+            0.564529098909835,
+            0.8965171985225997,
+            0.36792828664768873,
+            0.6811466319147079,
+            0.04795110047019757,
+            0.33355462154327986,
+            0.19882695924603588,
+            0.4116714070095846,
+            0.07934240242135737,
+            0.42724633975875426,
+            0.5358005687699703,
+            0.5910805999797129,
+            0.2841543363273238,
+            0.414725865128835,
+            0.026906268886554896,
+            0.3621256577250671,
+            0.9945681862504354,
+            0.07184549434969778,
+            0.1220437231354885,
+            0.8422137325421886,
+            0.4537501021068471,
+            0.2152944303497728
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "filter": {
+          "shape": [1, 1, 3, 3],
+          "data": [
+            0.3804761331189006,
+            0.5280312082437455,
+            0.2194703660873738,
+            0.3668976886827289,
+            0.33974137307686836,
+            0.42000596251782674,
+            0.38050310131155185,
+            0.19443586243810795,
+            0.5686976617292392
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 1, 3, 3],
+         "data": [
+          1.5323282480239868,
+          1.3573521375656128,
+          1.3641656637191772,
+          1.071682333946228,
+          1.1259644031524658,
+          1.4713115692138672,
+          1.078782320022583,
+          1.155018925666809,
+          1.656954288482666
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "conv2d float32 4D input and filter tensors default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json b/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
index 980cc9f6629..42274e6fa37 100644
--- a/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
+++ b/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
@@ -40,6 +40,48 @@
         "type": "float32"
       }
     },
+    {
+      "name": "convTranspose2d float32 4D both input and filter constant tensors default options",
+      "inputs": {
+        "input": {
+          "shape": [1, 1, 2, 2],
+          "data": [
+            0.5872158177067033,
+            0.6077792328258038,
+            0.01728916618181975,
+            0.26146076483771563
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "filter": {
+          "shape": [1, 1, 2, 2],
+          "data": [
+            0.32927132527587477,
+            0.5866857173772775,
+            0.29701370673751004,
+            0.0033378428248385106
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "shape": [1, 1, 3, 3],
+        "data": [
+          0.1933533400297165,
+          0.5446354150772095,
+          0.3565753698348999,
+          0.18010397255420685,
+          0.2787136137485504,
+          0.15542395412921906,
+          0.0051351189613342285,
+          0.07771513611078262,
+          0.0008727149106562138
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "convTranspose2d float32 4D input and filter tensors default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/cos.json b/tests/wpt/tests/webnn/resources/test_data/cos.json
index 4d992325509..db7ade11e38 100644
--- a/tests/wpt/tests/webnn/resources/test_data/cos.json
+++ b/tests/wpt/tests/webnn/resources/test_data/cos.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "cos float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            85.56368722678593,
+            -45.09983640817779,
+            -94.6775036804249,
+            83.49029219662862,
+            -31.367904335227692,
+            70.1804254973957,
+            -90.36229826898601,
+            -83.00758001757269,
+            61.51649571682452,
+            -32.51877900985289,
+            -48.376587517032775,
+            -58.02735967650854,
+            89.79197789644661,
+            -84.53326629430444,
+            -58.23252607768894,
+            -76.14168597373077,
+            -59.05887786348942,
+            77.38546821194151,
+            -98.67289449592316,
+            -63.611559926077675,
+            26.857246203003186,
+            83.70417131490925,
+            76.56606838780263,
+            -47.83436545380422
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.7380040884017944,
+          0.43789437413215637,
+          0.9090799689292908,
+          -0.23584702610969543,
+          0.9988471865653992,
+          0.48416373133659363,
+          -0.7358400821685791,
+          0.24218930304050446,
+          0.25266921520233154,
+          0.4510514736175537,
+          -0.31276169419288635,
+          0.09197491407394409,
+          -0.2537800967693329,
+          -0.9583188891410828,
+          -0.11282006651163101,
+          0.736129879951477,
+          -0.80721116065979,
+          -0.4045141637325287,
+          -0.283336341381073,
+          0.7111190557479858,
+          -0.1531042903661728,
+          -0.43673399090766907,
+          0.39213326573371887,
+          -0.7580515146255493
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "cos float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/div.json b/tests/wpt/tests/webnn/resources/test_data/div.json
index d72544e8ec4..a60341181d1 100644
--- a/tests/wpt/tests/webnn/resources/test_data/div.json
+++ b/tests/wpt/tests/webnn/resources/test_data/div.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "div float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            60.42374184854583,
+            -86.92247771592565,
+            -19.496113538677307,
+            -15.150616021872224,
+            13.455190756956796,
+            45.4335994568701,
+            61.08286131089616,
+            70.71882919883615,
+            -31.27858011424047,
+            56.083543107783214,
+            38.99276571709217,
+            -3.275369300234928,
+            32.289323532099786,
+            -3.676541725498467,
+            88.4349140505588,
+            14.369060854798647,
+            13.94319409117783,
+            16.861190475721344,
+            4.816806540352701,
+            44.15916607007162,
+            -13.083211898368276,
+            44.565997906464105,
+            -34.892785072690245,
+            -74.09375203216162
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            -95.02903333542001,
+            62.804865007594174,
+            -85.32865597192423,
+            -68.20919717822437,
+            79.45568261298038,
+            -68.69049322917093,
+            -94.46466465496823,
+            -10.000411029009541,
+            18.318865013229242,
+            -3.623280011603569,
+            -5.957828048196006,
+            89.49882849628409,
+            94.95791079054848,
+            -79.00059056550418,
+            -79.87597038424425,
+            74.997874802068,
+            25.86537368134097,
+            91.54433121797925,
+            81.65287344691947,
+            48.214831959279195,
+            63.37012091471408,
+            10.62638472655793,
+            46.12662564540156,
+            77.2232730204774
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.6358450651168823,
+          -1.3840086460113525,
+          0.22848258912563324,
+          0.22211983799934387,
+          0.16934208571910858,
+          -0.6614248752593994,
+          -0.6466212868690491,
+          -7.071591854095459,
+          -1.7074518203735352,
+          -15.478666305541992,
+          -6.544795513153076,
+          -0.036596786230802536,
+          0.3400382697582245,
+          0.046538159251213074,
+          -1.1071529388427734,
+          0.19159291684627533,
+          0.5390679836273193,
+          0.18418607115745544,
+          0.058991268277168274,
+          0.9158834218978882,
+          -0.20645710825920105,
+          4.193900108337402,
+          -0.7564564943313599,
+          -0.9594743251800537
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "div float32 1D tensors",
       "inputs": {
@@ -65,7 +163,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           -0.6358450651168823,
@@ -161,7 +259,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           -0.6358450651168823,
@@ -257,7 +355,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 3, 4],
         "data": [
           -0.6358450651168823,
@@ -353,7 +451,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -0.6358450651168823,
@@ -449,7 +547,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 1, 2, 3],
         "data": [
           -0.6358450651168823,
@@ -522,7 +620,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -0.6922348141670227,
@@ -600,7 +698,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           0.6208509802818298,
@@ -676,7 +774,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           0.8047597408294678,
@@ -749,7 +847,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -0.6922348141670227,
diff --git a/tests/wpt/tests/webnn/resources/test_data/elu.json b/tests/wpt/tests/webnn/resources/test_data/elu.json
index 68c0c80c59b..b1c443282e4 100644
--- a/tests/wpt/tests/webnn/resources/test_data/elu.json
+++ b/tests/wpt/tests/webnn/resources/test_data/elu.json
@@ -1,5 +1,72 @@
 { // elu: The calculation follows the expression max(0, x) + alpha * (exp(min(0, x)) - 1).
   "tests": [
+    {
+      "name": "elu float32 1D constant tensor default options", // default options: {alpha: 1}
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            4.721739616402454,
+            0.37687805459885837,
+            1.4189998297338988,
+            -3.866366516102673,
+            1.3590080831697868,
+            -3.8641844556612392,
+            7.839725573639406,
+            -6.690801377003339,
+            0.545640671378024,
+            5.776711453839759,
+            7.263273186498619,
+            -7.419948093040434,
+            5.665064356187175,
+            -6.712906923265587,
+            -3.3348948531721945,
+            -1.2103675328053143,
+            7.255546982014842,
+            8.903468527480992,
+            -4.019860311974934,
+            7.114678383091487,
+            -0.11212847159184136,
+            -3.688840965850466,
+            6.135151096361078,
+            -9.895182558358613
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          4.721739768981934,
+          0.3768780529499054,
+          1.4189997911453247,
+          -0.9790657162666321,
+          1.3590080738067627,
+          -0.9790199995040894,
+          7.839725494384766,
+          -0.9987577199935913,
+          0.5456406474113464,
+          5.776711463928223,
+          7.263273239135742,
+          -0.999400794506073,
+          5.665064334869385,
+          -0.9987848997116089,
+          -0.9643816947937012,
+          -0.7019122838973999,
+          7.255547046661377,
+          8.903468132019043,
+          -0.982044517993927,
+          7.114678382873535,
+          -0.10607059299945831,
+          -0.9749990105628967,
+          6.135150909423828,
+          -0.99994957447052
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "elu float32 1D tensor default options", // default options: {alpha: 1}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/equal.json b/tests/wpt/tests/webnn/resources/test_data/equal.json
index 8350a25d594..bbd9143a032 100644
--- a/tests/wpt/tests/webnn/resources/test_data/equal.json
+++ b/tests/wpt/tests/webnn/resources/test_data/equal.json
@@ -27,6 +27,104 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "equal float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            2.8057064434130865,
+            5.588105051769192,
+            2.8552264057573318,
+            4.996258886261531,
+            0.9727277518275201,
+            -4.7425998673234115,
+            2.8057064434130865,
+            5.588105051769192,
+            -5.107602083264831,
+            6.62414218944782,
+            -2.320724650141428,
+            -7.053896009779472,
+            2.8057064434130865,
+            5.588105051769192,
+            4.980423911313675,
+            -5.440841218751173,
+            1.1459590058073985,
+            7.774532655736756,
+            2.8057064434130865,
+            5.588105051769192,
+            -6.245251018074902,
+            -2.849073058101119,
+            -2.6951117252164236,
+            5.8175630540970715
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            2.8057064434130865,
+            5.588105051769192,
+            -4.839719707803649,
+            4.996258886261531,
+            0.9727277518275201,
+            -6.173707599765419,
+            2.8057064434130865,
+            5.588105051769192,
+            7.767369675510874,
+            -4.308908126069415,
+            -5.895479626582176,
+            -8.532091541161986,
+            2.8057064434130865,
+            5.588105051769192,
+            0.17833953390240076,
+            -4.479541639848148,
+            0.6819732148052395,
+            -6.687512654244134,
+            2.8057064434130865,
+            5.588105051769192,
+            -9.041799605912026,
+            -1.972828107164485,
+            -3.011512276155144,
+            3.6268343183100704
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          1,
+          1,
+          0,
+          1,
+          1,
+          0,
+          1,
+          1,
+          0,
+          0,
+          0,
+          0,
+          1,
+          1,
+          0,
+          0,
+          0,
+          0,
+          1,
+          1,
+          0,
+          0,
+          0,
+          0
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "equal float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/erf.json b/tests/wpt/tests/webnn/resources/test_data/erf.json
index 8a9ae6e68c1..6f0b550cf79 100644
--- a/tests/wpt/tests/webnn/resources/test_data/erf.json
+++ b/tests/wpt/tests/webnn/resources/test_data/erf.json
@@ -20,6 +20,73 @@
         "type": "float32"
       }
     },
+    {
+      "name": "erf float32 1D constant tensor",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            -0.5883062462825124,
+            -0.5323766618091814,
+            0.127987056070479,
+            0.5772181473181615,
+            0.9045778906827358,
+            -0.49856746753516346,
+            0.9843886624146143,
+            0.21642259286228738,
+            0.25235170684373465,
+            -0.14916697974435467,
+            0.9136939573458718,
+            -0.5736439986742754,
+            0.740446832641029,
+            0.5202203195176929,
+            -0.16549504687505712,
+            0.8005731834523444,
+            0.4001320000966242,
+            -0.7489422658248586,
+            -0.8946002438575227,
+            -0.392025619231934,
+            0.6854220843685903,
+            -0.674490045974586,
+            -0.4398081957860396,
+            0.2709762572248531
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.5945858955383301,
+          -0.5484867095947266,
+          0.14363321661949158,
+          0.5856771469116211,
+          0.7991966009140015,
+          -0.5192402005195618,
+          0.8361185789108276,
+          0.2404468059539795,
+          0.27881762385368347,
+          -0.16707675158977509,
+          0.8036975860595703,
+          -0.5827808976173401,
+          0.7049695253372192,
+          0.5380884408950806,
+          -0.1850501298904419,
+          0.742441713809967,
+          0.4285193383693695,
+          -0.710474967956543,
+          -0.7941843867301941,
+          -0.4207003712654114,
+          0.6676210165023804,
+          -0.6598520874977112,
+          -0.46604686975479126,
+          0.29844197630882263
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "erf float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/exp.json b/tests/wpt/tests/webnn/resources/test_data/exp.json
index 8a86edec3b8..2de52d951e9 100644
--- a/tests/wpt/tests/webnn/resources/test_data/exp.json
+++ b/tests/wpt/tests/webnn/resources/test_data/exp.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "exp float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            0.342143655338516,
+            -3.3109650690636583,
+            -3.696757542725746,
+            -5.105378072825206,
+            5.471040383543361,
+            -0.06790750193598072,
+            2.7373435551676373,
+            -3.547075850060808,
+            5.3392248393586215,
+            -1.2636781380561768,
+            -0.9162953518691133,
+            -9.088432637604779,
+            -4.016050813135332,
+            4.670352907446356,
+            7.326991954708756,
+            8.294342869341662,
+            -7.3454139558670795,
+            -0.9275799995316945,
+            -1.7085379363808997,
+            -9.737379277450184,
+            -1.9747875652397973,
+            8.203150154065185,
+            -7.267597492286808,
+            -3.5890684093944714
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          1.4079625606536865,
+          0.03648095205426216,
+          0.024803820997476578,
+          0.006064045242965221,
+          237.70733642578125,
+          0.9343469142913818,
+          15.44589900970459,
+          0.02880876138806343,
+          208.35113525390625,
+          0.2826126217842102,
+          0.39999815821647644,
+          0.00011296502634650096,
+          0.018024004995822906,
+          106.73540496826172,
+          1520.8004150390625,
+          4001.173583984375,
+          0.0006455459515564144,
+          0.3955096900463104,
+          0.18113042414188385,
+          0.0000590350573475007,
+          0.1387907862663269,
+          3652.4365234375,
+          0.0006977862794883549,
+          0.02762405201792717
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "exp float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/expand.json b/tests/wpt/tests/webnn/resources/test_data/expand.json
index be56ca14890..00bf4a37b4e 100644
--- a/tests/wpt/tests/webnn/resources/test_data/expand.json
+++ b/tests/wpt/tests/webnn/resources/test_data/expand.json
@@ -220,6 +220,51 @@
         "type": "float32"
       }
     },
+    {
+      "name": "expand float32 1D constant tensor to 1D",
+      "inputs": {
+        "input": {
+          "shape": [1],
+          "data": [
+            -6.461850643157959
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "newShape": [24],
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -6.461850643157959,
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diff --git a/tests/wpt/tests/webnn/resources/test_data/floor.json b/tests/wpt/tests/webnn/resources/test_data/floor.json
index f2fa797d416..3b5dba15762 100644
--- a/tests/wpt/tests/webnn/resources/test_data/floor.json
+++ b/tests/wpt/tests/webnn/resources/test_data/floor.json
@@ -1,5 +1,72 @@
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diff --git a/tests/wpt/tests/webnn/resources/test_data/gather.json b/tests/wpt/tests/webnn/resources/test_data/gather.json
new file mode 100644
index 00000000000..a01654637f1
--- /dev/null
+++ b/tests/wpt/tests/webnn/resources/test_data/gather.json
@@ -0,0 +1,1268 @@
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+      "name": "gather float32 2D tensor and 4D indices default options",
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+          "type": "int64"
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+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 2, 3, 2],
+        "data": [
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+    },
+    {
+      "name": "gather float32 3D tensor and 2D indices default options",
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+      },
+      "expected": {
+        "name": "output",
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+        "data": [
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+          44.92119598388672,
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+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 4D tensor and 2D indices default options",
+      "inputs": {
+        "input": {
+          "shape": [8, 1, 1, 3],
+          "data": [
+            -66.05901336669922,
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+          "data": [
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+          ],
+          "type": "int64"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [2, 2, 1, 1, 3],
+        "data": [
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+          55.620765686035156,
+          44.92119598388672
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 5D tensor and 1D indices default options",
+      "inputs": {
+        "input": {
+          "shape": [4, 2, 1, 1, 3],
+          "data": [
+            -66.05901336669922,
+            -68.9197006225586,
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+            43.11057662963867,
+            0.9129875898361206,
+            -7.699817180633545,
+            25.76774024963379,
+            73.60064697265625
+          ],
+          "type": "float32"
+        },
+        "indices": {
+          "shape": [3],
+          "data": [
+            3,
+            2,
+            2
+          ],
+          "type": "int64"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [3, 2, 1, 1, 3],
+        "data": [
+          -37.696800231933594,
+          43.11057662963867,
+          0.9129875898361206,
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+          56.828636169433594,
+          10.829925537109375,
+          -19.693084716796875
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 3D tensor and 1D indices options.axis=1",
+      "inputs": {
+        "input": {
+          "shape": [3, 4, 2],
+          "data": [
+            -66.05901336669922,
+            -68.9197006225586,
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+            25.76774024963379,
+            73.60064697265625
+          ],
+          "type": "float32"
+        },
+        "indices": {
+          "shape": [3],
+          "data": [
+            1,
+            1,
+            2
+          ],
+          "type": "int64"
+        }
+      },
+      "options": {
+        "axis": 1
+      },
+      "expected": {
+        "name": "output",
+        "shape": [3, 3, 2],
+        "data": [
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+          -26.158037185668945,
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+          43.11057662963867,
+          0.9129875898361206,
+          -7.699817180633545
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 3D tensor and 2D indices options.axis=2",
+      "inputs": {
+        "input": {
+          "shape": [3, 4, 2],
+          "data": [
+            -66.05901336669922,
+            -68.9197006225586,
+            -77.02045440673828,
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+            0.9129875898361206,
+            -7.699817180633545,
+            25.76774024963379,
+            73.60064697265625
+          ],
+          "type": "float32"
+        },
+        "indices": {
+          "shape": [2, 2],
+          "data": [
+            0,
+            0,
+            0,
+            1
+          ],
+          "type": "int64"
+        }
+      },
+      "options": {
+        "axis": 2
+      },
+      "expected": {
+        "name": "output",
+        "shape": [3, 4, 2, 2],
+        "data": [
+          -66.05901336669922,
+          -66.05901336669922,
+          -66.05901336669922,
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+          -1.1303654909133911,
+          -1.1303654909133911,
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+          90.2870101928711,
+          90.2870101928711,
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+          44.92119598388672,
+          44.92119598388672,
+          44.92119598388672,
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+          10.829925537109375,
+          10.829925537109375,
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+          0.9129875898361206,
+          0.9129875898361206,
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+          25.76774024963379,
+          25.76774024963379,
+          25.76774024963379,
+          73.60064697265625
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 4D tensor and 2D indices explict options.axis=0",
+      "inputs": {
+        "input": {
+          "shape": [8, 1, 1, 3],
+          "data": [
+            -66.05901336669922,
+            -68.9197006225586,
+            -77.02045440673828,
+            -26.158037185668945,
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+            10.829925537109375,
+            -19.693084716796875,
+            -37.696800231933594,
+            43.11057662963867,
+            0.9129875898361206,
+            -7.699817180633545,
+            25.76774024963379,
+            73.60064697265625
+          ],
+          "type": "float32"
+        },
+        "indices": {
+          "shape": [2, 2],
+          "data": [
+            0,
+            0,
+            7,
+            4
+          ],
+          "type": "int64"
+        }
+      },
+      "options": {
+        "axis": 0
+      },
+      "expected": {
+        "name": "output",
+        "shape": [2, 2, 1, 1, 3],
+        "data": [
+          -66.05901336669922,
+          -68.9197006225586,
+          -77.02045440673828,
+          -66.05901336669922,
+          -68.9197006225586,
+          -77.02045440673828,
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+          73.60064697265625,
+          90.2870101928711,
+          55.620765686035156,
+          44.92119598388672
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "gather float32 5D tensor and 0D scalar indices options.axis=4",
+      "inputs": {
+        "input": {
+          "shape": [4, 2, 1, 1, 3],
+          "data": [
+            -66.05901336669922,
+            -68.9197006225586,
+            -77.02045440673828,
+            -26.158037185668945,
+            89.0337142944336,
+            -45.89653396606445,
+            43.84803771972656,
+            48.81806945800781,
+            51.79948425292969,
+            41.94132614135742,
+            -1.1303654909133911,
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+            55.620765686035156,
+            44.92119598388672,
+            56.828636169433594,
+            10.829925537109375,
+            -19.693084716796875,
+            -37.696800231933594,
+            43.11057662963867,
+            0.9129875898361206,
+            -7.699817180633545,
+            25.76774024963379,
+            73.60064697265625
+          ],
+          "type": "float32"
+        },
+        "indices": {
+          "shape": [],
+          "data": [
+            1
+          ],
+          "type": "int64"
+        }
+      },
+      "options": {
+        "axis": 4
+      },
+      "expected": {
+        "name": "output",
+        "shape": [4, 2, 1, 1],
+        "data": [
+          -68.9197006225586,
+          89.0337142944336,
+          48.81806945800781,
+          -1.1303654909133911,
+          55.620765686035156,
+          10.829925537109375,
+          43.11057662963867,
+          25.76774024963379
+        ],
+        "type": "float32"
+      }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/test_data/gemm.json b/tests/wpt/tests/webnn/resources/test_data/gemm.json
index 3738e19f7c6..23a18b316ca 100644
--- a/tests/wpt/tests/webnn/resources/test_data/gemm.json
+++ b/tests/wpt/tests/webnn/resources/test_data/gemm.json
@@ -144,6 +144,103 @@
       }
     },
     // options.c
+    {
+      "name": "gemm two float32 2D constant tensors options.c",
+      "inputs": {
+        "a": {
+          "shape": [3, 4],
+          "data": [
+            82.98884511142329,
+            90.51641254722982,
+            59.6385201162642,
+            36.27187180381433,
+            18.96485038946509,
+            43.89479290862091,
+            98.89487912764056,
+            91.46013741088626,
+            50.51683887619669,
+            40.45679629199866,
+            50.76741460760452,
+            9.336554329198155
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [4, 5],
+          "data": [
+            25.14739246484985,
+            66.69238549579231,
+            63.29909902139696,
+            10.629964783998469,
+            61.32737573972831,
+            0.003725653326558387,
+            16.499146388625483,
+            3.0366680571384252,
+            93.14021782678614,
+            70.08265680040718,
+            75.74880854000601,
+            96.6068806977233,
+            99.10042039275365,
+            23.243775283337477,
+            86.1185682132947,
+            42.90679144336773,
+            34.08055187293266,
+            87.37654561544477,
+            92.34209530787089,
+            60.32208994273669
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "options": {
+        "c": {
+          "shape": [3, 5],
+          "data": [
+            82.77202028708963,
+            91.38520749770859,
+            12.651897708721549,
+            20.12200327935334,
+            68.51224585053419,
+            35.2024171023056,
+            13.33466578964102,
+            50.785469741049205,
+            88.61195160882922,
+            30.577471042677097,
+            69.47062151883239,
+            7.166217909076766,
+            28.337108113083744,
+            90.69412588106762,
+            71.23025762837965
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [3, 5],
+        "data": [
+          8243.9189453125,
+          14117.208984375,
+          14620.15234375,
+          14068.654296875,
+          18825.609375,
+          11927.712890625,
+          14673.310546875,
+          19176.533203125,
+          15122.8896484375,
+          18303.658203125,
+          5586.16064453125,
+          9266.43359375,
+          9195.7294921875,
+          6438.0244140625,
+          10939.8330078125
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "gemm two float32 2D tensors options.c",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/greater.json b/tests/wpt/tests/webnn/resources/test_data/greater.json
index 12e32d90728..d7dc34d18bb 100644
--- a/tests/wpt/tests/webnn/resources/test_data/greater.json
+++ b/tests/wpt/tests/webnn/resources/test_data/greater.json
@@ -27,6 +27,104 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "greater float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -5.394711458674926,
+            -7.189248660357093,
+            -3.108176577372168,
+            4.977657240654292,
+            5.111654167277017,
+            -1.538657969029952,
+            1.4143663572463936,
+            -0.9362112515011844,
+            -6.029961511382025,
+            -3.0134198095493225,
+            0.17085531331013115,
+            7.395327146335315,
+            7.178691694492247,
+            -4.826237489933036,
+            -2.0204401018636275,
+            -3.267887959306748,
+            8.944384478538513,
+            -5.9321008596864555,
+            0.7069857360876597,
+            2.7764204012258844,
+            0.9788337909419198,
+            -6.254901877789392,
+            4.40903450389083,
+            -6.775286805113776
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            -6.155234276085855,
+            -4.023341341511664,
+            5.9525983178014386,
+            2.3066237309537883,
+            -2.7692292888690817,
+            -0.9711201246625745,
+            1.2222066588909755,
+            4.590261643319389,
+            9.101232896619365,
+            -4.997007709812857,
+            -4.807293508200368,
+            8.919360491720344,
+            0.900502762346548,
+            -2.8414556193065543,
+            -2.8280412040974845,
+            8.479845345966147,
+            -7.840679465875833,
+            9.213960197279938,
+            4.982364937519449,
+            -2.5073192467116145,
+            -4.518013838492472,
+            8.351094603114355,
+            -6.161073167579363,
+            0.7364829132932815
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          1,
+          0,
+          0,
+          1,
+          1,
+          0,
+          1,
+          0,
+          0,
+          1,
+          1,
+          0,
+          1,
+          0,
+          1,
+          0,
+          1,
+          0,
+          0,
+          1,
+          1,
+          0,
+          1,
+          0
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "greater float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/greater_or_equal.json b/tests/wpt/tests/webnn/resources/test_data/greater_or_equal.json
index 93ae0b3a4bc..e47ac4350ab 100644
--- a/tests/wpt/tests/webnn/resources/test_data/greater_or_equal.json
+++ b/tests/wpt/tests/webnn/resources/test_data/greater_or_equal.json
@@ -26,6 +26,103 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "greaterOrEqual float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -8.049108184315305,
+            -5.522611295148119,
+            -2.097508268712267,
+            -7.455326346855671,
+            -5.4503762765457475,
+            9.802918209039795,
+            -3.6045179646016123,
+            4.088084930154503,
+            -5.068354954162224,
+            1.5821936652025705,
+            5.675583814922739,
+            -4.34159498166756,
+            1.6946222397391875,
+            2.926734617639429,
+            -7.000074175864097,
+            -2.5270822950013105,
+            1.4437268276959525,
+            7.862768559473771,
+            5.782288879751384,
+            1.8712013338616238,
+            -0.5233999645803635,
+            0.43433289218891247,
+            8.938365119196128,
+            1.65683957584843
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            -7.028095113692983,
+            1.9109992244501228,
+            3.576529209692282,
+            1.7167964605289043,
+            2.846137548919838,
+            -2.311762981138341,
+            -6.086130252861408,
+            -3.437926736129744,
+            -3.4764428213302656,
+            -2.194656398262036,
+            2.9962267558939892,
+            -5.540947945499273,
+            5.098470133217425,
+            6.775498827056623,
+            2.4505413384295913,
+            5.210598812779001,
+            -9.710094050019439,
+            -2.413028179599279,
+            8.678308853275162,
+            -9.449530756013411,
+            0.7702168987269076,
+            -1.518607415508292,
+            -9.15394321549195,
+            -4.9917360557925194
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "shape": [24],
+        "data": [
+          0,
+          0,
+          0,
+          0,
+          0,
+          1,
+          1,
+          1,
+          0,
+          1,
+          1,
+          1,
+          0,
+          0,
+          0,
+          0,
+          1,
+          1,
+          0,
+          1,
+          0,
+          1,
+          1,
+          1
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "greaterOrEqual float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/hard_sigmoid.json b/tests/wpt/tests/webnn/resources/test_data/hard_sigmoid.json
index 22fe7c6da0c..5d8c0c5daf1 100644
--- a/tests/wpt/tests/webnn/resources/test_data/hard_sigmoid.json
+++ b/tests/wpt/tests/webnn/resources/test_data/hard_sigmoid.json
@@ -1,5 +1,72 @@
 { // hardSigmoid: Calculate the non-smooth function used in place of a sigmoid function on the input tensor.
   "tests": [
+    {
+      "name": "hardSigmoid float32 positive 1D constant tensor default options", // default options: {alpha: 0.2, beta: 0.5}
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            0.05907066981577147,
+            0.7076089198897,
+            0.5228405296259637,
+            0.42310158753617455,
+            0.6643692569867639,
+            0.9502940424761401,
+            0.10918906453593258,
+            0.012977113903015258,
+            0.4755297159390164,
+            0.5322551665299613,
+            0.684307857800798,
+            0.4662107602754757,
+            0.3048996433987061,
+            0.8025872652109942,
+            0.2485963985673023,
+            0.6636898942337357,
+            0.554761182646025,
+            0.5542584257213008,
+            0.7311381962152534,
+            0.48809603333206986,
+            0.7766845231174959,
+            0.8455570201933926,
+            0.5553020911955322,
+            0.5603444395469193
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          0.5118141174316406,
+          0.6415218114852905,
+          0.6045681238174438,
+          0.5846202969551086,
+          0.6328738331794739,
+          0.6900588274002075,
+          0.5218378305435181,
+          0.5025954246520996,
+          0.5951059460639954,
+          0.6064510345458984,
+          0.6368615627288818,
+          0.5932421684265137,
+          0.5609799027442932,
+          0.6605174541473389,
+          0.5497192740440369,
+          0.6327379941940308,
+          0.6109522581100464,
+          0.6108517050743103,
+          0.6462276577949524,
+          0.5976191759109497,
+          0.6553369164466858,
+          0.669111430644989,
+          0.6110604405403137,
+          0.6120688915252686
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "hardSigmoid float32 positive 1D tensor default options", // default options: {alpha: 0.2, beta: 0.5}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/hard_swish.json b/tests/wpt/tests/webnn/resources/test_data/hard_swish.json
index 8d7812d21e2..e43f62ede0e 100644
--- a/tests/wpt/tests/webnn/resources/test_data/hard_swish.json
+++ b/tests/wpt/tests/webnn/resources/test_data/hard_swish.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "hardSwish float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            0.7341583533045579,
+            9.118859151005996,
+            3.545238531520827,
+            2.621943879280181,
+            -6.445507690595167,
+            -1.6835596550754381,
+            5.523179785756591,
+            -5.958856051028132,
+            -9.169189933081544,
+            6.420943542920213,
+            -3.293031330275471,
+            1.0410166785810624,
+            -7.246322671816956,
+            -0.9472730969847909,
+            -5.778352255817807,
+            3.185229125228698,
+            -7.261818072290236,
+            4.174602615173795,
+            3.7802628241590686,
+            -6.07124038718255,
+            -9.909919471919547,
+            -7.744259390113584,
+            -8.286120816748381,
+            8.083491160956697
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          0.4569105803966522,
+          9.11885929107666,
+          3.545238494873047,
+          2.4567370414733887,
+          0,
+          -0.3693843185901642,
+          5.52318000793457,
+          0,
+          0,
+          6.420943737030029,
+          0,
+          0.7011276483535767,
+          0,
+          -0.3240821659564972,
+          0,
+          3.1852290630340576,
+          0,
+          4.174602508544922,
+          3.7802627086639404,
+          0,
+          0,
+          0,
+          0,
+          8.083491325378418
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "hardSwish float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/identity.json b/tests/wpt/tests/webnn/resources/test_data/identity.json
index 444b39dc06c..6024e8786fb 100644
--- a/tests/wpt/tests/webnn/resources/test_data/identity.json
+++ b/tests/wpt/tests/webnn/resources/test_data/identity.json
@@ -20,6 +20,74 @@
         "type": "float32"
       }
     },
+    {
+      "name": "identity float32 1D constant tensor",
+      "inputs": {
+        "input": {
+          "shape":[24],
+          "data": [
+            0.3775514170243319,
+            -0.8890897684684553,
+            9.965806154214683,
+            7.964576323402355,
+            -4.207889285235442,
+            -3.748703004469509,
+            -2.5114005246358584,
+            5.777673182705456,
+            -4.472823584733945,
+            -8.405767426137253,
+            -3.857972358579822,
+            6.0361876313443865,
+            9.076417609486516,
+            7.101912233390028,
+            1.4166420410053604,
+            -5.644308337756456,
+            -2.598648114422626,
+            -7.264847061642685,
+            -9.782458548766716,
+            5.4966995825042275,
+            -9.967339588615012,
+            -6.901016518448189,
+            -2.850190435789366,
+            3.279616439989832
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          0.377551406621933,
+          -0.8890897631645203,
+          9.965806007385254,
+          7.964576244354248,
+          -4.207889080047607,
+          -3.7487030029296875,
+          -2.5114004611968994,
+          5.777673244476318,
+          -4.472823619842529,
+          -8.405767440795898,
+          -3.8579723834991455,
+          6.036187648773193,
+          9.076417922973633,
+          7.101912021636963,
+          1.4166420698165894,
+          -5.644308567047119,
+          -2.5986480712890625,
+          -7.264847278594971,
+          -9.782458305358887,
+          5.496699810028076,
+          -9.967339515686035,
+          -6.901016712188721,
+          -2.8501904010772705,
+          3.279616355895996
+        ],
+        "type": "float32",
+        "constant": true
+      }
+    },
     {
       "name": "identity float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/layer_normalization.json b/tests/wpt/tests/webnn/resources/test_data/layer_normalization.json
new file mode 100644
index 00000000000..6005776de5e
--- /dev/null
+++ b/tests/wpt/tests/webnn/resources/test_data/layer_normalization.json
@@ -0,0 +1,842 @@
+{
+  "tests": [
+    {
+      "name": "layerNormalization float32 2D tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [4, 6],
+          "data": [
+            -35.51446620394829,
+            54.735407789317094,
+            19.65901979009459,
+            -15.882677905820188,
+            65.48657727565143,
+            25.818493353057278,
+            97.5530279802174,
+            -8.057161374785466,
+            62.941297318740425,
+            -48.91555566709158,
+            91.90643767958213,
+            46.67098666459884,
+            -74.85331462850246,
+            30.12636276060539,
+            26.130894553011203,
+            59.302706651602165,
+            -60.36199702412532,
+            18.556152152037427,
+            -88.0373081005649,
+            -26.566773146168643,
+            70.81292942844541,
+            9.1056120562301,
+            56.66746139054709,
+            21.78444497295007
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [4, 6],
+        "data": [
+          -1.5257738828659058,
+          0.997844934463501,
+          0.017018765211105347,
+          -0.9768186211585999,
+          1.2984753847122192,
+          0.18925349414348602,
+          1.0812907218933105,
+          -0.915019690990448,
+          0.4270379841327667,
+          -1.6873507499694824,
+          0.9745554327964783,
+          0.11948632448911667,
+          -1.5086692571640015,
+          0.6123882532119751,
+          0.5316619873046875,
+          1.2018805742263794,
+          -1.215880036354065,
+          0.378618448972702,
+          -1.795186161994934,
+          -0.6376377940177917,
+          1.1961140632629395,
+          0.034106940031051636,
+          0.9297415614128113,
+          0.2728613615036011
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "layerNormalization float32 3D tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [2, 3, 4],
+          "data": [
+            -35.51446620394829,
+            54.735407789317094,
+            19.65901979009459,
+            -15.882677905820188,
+            65.48657727565143,
+            25.818493353057278,
+            97.5530279802174,
+            -8.057161374785466,
+            62.941297318740425,
+            -48.91555566709158,
+            91.90643767958213,
+            46.67098666459884,
+            -74.85331462850246,
+            30.12636276060539,
+            26.130894553011203,
+            59.302706651602165,
+            -60.36199702412532,
+            18.556152152037427,
+            -88.0373081005649,
+            -26.566773146168643,
+            70.81292942844541,
+            9.1056120562301,
+            56.66746139054709,
+            21.78444497295007
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [2, 3, 4],
+        "data": [
+          -1.4057259559631348,
+          0.5396455526351929,
+          -0.21643976867198944,
+          -0.9825550317764282,
+          0.7713912725448608,
+          -0.08366990834474564,
+          1.46259605884552,
+          -0.8138729333877563,
+          0.7165266871452332,
+          -1.6945916414260864,
+          1.3408818244934082,
+          0.3658137917518616,
+          -1.5234858989715576,
+          0.5162702202796936,
+          0.43863821029663086,
+          1.0831668376922607,
+          -1.2419193983078003,
+          0.29146093130111694,
+          -1.7796510457992554,
+          -0.5852779150009155,
+          1.3068104982376099,
+          0.10783683508634567,
+          1.0319640636444092,
+          0.35418668389320374
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "layerNormalization float32 4D tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [2, 1, 4, 3],
+          "data": [
+            -35.51446620394829,
+            54.735407789317094,
+            19.65901979009459,
+            -15.882677905820188,
+            65.48657727565143,
+            25.818493353057278,
+            97.5530279802174,
+            -8.057161374785466,
+            62.941297318740425,
+            -48.91555566709158,
+            91.90643767958213,
+            46.67098666459884,
+            -74.85331462850246,
+            30.12636276060539,
+            26.130894553011203,
+            59.302706651602165,
+            -60.36199702412532,
+            18.556152152037427,
+            -88.0373081005649,
+            -26.566773146168643,
+            70.81292942844541,
+            9.1056120562301,
+            56.66746139054709,
+            21.78444497295007
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [2, 1, 4, 3],
+        "data": [
+          -1.4057259559631348,
+          0.5396455526351929,
+          -0.21643976867198944,
+          -0.9825550317764282,
+          0.7713912725448608,
+          -0.08366990834474564,
+          1.46259605884552,
+          -0.8138729333877563,
+          0.7165266871452332,
+          -1.6945916414260864,
+          1.3408818244934082,
+          0.3658137917518616,
+          -1.5234858989715576,
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+}
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/test_data/leaky_relu.json b/tests/wpt/tests/webnn/resources/test_data/leaky_relu.json
index a95a9a0cfce..be810a90cea 100644
--- a/tests/wpt/tests/webnn/resources/test_data/leaky_relu.json
+++ b/tests/wpt/tests/webnn/resources/test_data/leaky_relu.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "leakyRelu float32 1D constant tensor default options", // default options.alpha=0.01
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -19.053641157857015,
+            50.77590443347373,
+            -69.54966768567536,
+            -80.57432185346957,
+            -90.40109641580112,
+            76.02884674163622,
+            66.33873525494391,
+            -84.10186452043264,
+            -17.19101282693427,
+            -87.47624329964907,
+            -3.4164664941905585,
+            -22.7723589638245,
+            -2.509489125727569,
+            18.933284857582677,
+            98.61402761165104,
+            55.33923216295767,
+            -33.178605382176,
+            -46.03901297809681,
+            -61.47925538549912,
+            64.26514742116822,
+            21.46934200700099,
+            -31.51468946013378,
+            -41.27694294131783,
+            -65.59528852425132
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.19053640961647034,
+          50.77590560913086,
+          -0.695496678352356,
+          -0.8057432770729065,
+          -0.9040110111236572,
+          76.02884674072266,
+          66.33873748779297,
+          -0.8410186767578125,
+          -0.1719101369380951,
+          -0.8747624158859253,
+          -0.0341646634042263,
+          -0.2277235984802246,
+          -0.02509489096701145,
+          18.933284759521484,
+          98.61402893066406,
+          55.3392333984375,
+          -0.33178603649139404,
+          -0.4603901207447052,
+          -0.6147925853729248,
+          64.26514434814453,
+          21.469341278076172,
+          -0.31514689326286316,
+          -0.4127694368362427,
+          -0.6559529304504395
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "leakyRelu float32 1D tensor default options", // default options.alpha=0.01
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/lesser.json b/tests/wpt/tests/webnn/resources/test_data/lesser.json
index 64774d1621c..7527ea5c53a 100644
--- a/tests/wpt/tests/webnn/resources/test_data/lesser.json
+++ b/tests/wpt/tests/webnn/resources/test_data/lesser.json
@@ -26,6 +26,103 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "lesser float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -1.1472189199107738,
+            -8.409373914977403,
+            -2.2753309465448535,
+            -0.5770801181952088,
+            8.171789524073006,
+            -0.907120961653046,
+            5.290845327676683,
+            -3.9134646002455975,
+            9.825094822582592,
+            -8.931730412646708,
+            -3.4574016573266553,
+            -7.331231867596579,
+            1.2320041500405665,
+            4.312076818806343,
+            1.2715546106634825,
+            4.184540686856884,
+            -6.710920186561022,
+            3.0768423616317655,
+            1.0030865825397903,
+            -9.076244529342748,
+            8.907161848861044,
+            4.232614785327211,
+            2.1005889661509425,
+            -6.201345656840638
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            2.9453755897484726,
+            3.7304716829497266,
+            4.025375190729793,
+            -4.718355239722074,
+            6.773274305103257,
+            -2.042813441289626,
+            -6.526761957285996,
+            6.826299715878466,
+            -9.267172939567224,
+            6.118424090729771,
+            -2.0017322775193014,
+            1.779831042224643,
+            9.660093887317394,
+            -2.7473158972960476,
+            -3.4345008109025033,
+            -4.7510974486127955,
+            -6.092621934151237,
+            -0.43348063367342426,
+            -1.4069053013420518,
+            -0.23742098855005445,
+            -9.105970612932852,
+            6.811780042167808,
+            -6.768326860738436,
+            -8.952353121501568
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "shape": [24],
+        "data": [
+          1,
+          1,
+          1,
+          0,
+          0,
+          0,
+          0,
+          1,
+          0,
+          1,
+          1,
+          1,
+          1,
+          0,
+          0,
+          0,
+          1,
+          0,
+          0,
+          1,
+          0,
+          1,
+          0,
+          0
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "lesser float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/lesser_or_equal.json b/tests/wpt/tests/webnn/resources/test_data/lesser_or_equal.json
index 8daea5e1368..f47bd3b9d9c 100644
--- a/tests/wpt/tests/webnn/resources/test_data/lesser_or_equal.json
+++ b/tests/wpt/tests/webnn/resources/test_data/lesser_or_equal.json
@@ -26,6 +26,103 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "lesserOrEqual float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -8.28400872674051,
+            -3.2192645259702735,
+            -6.543179908675301,
+            -0.5402850743134735,
+            -5.413843546081334,
+            5.5837429023307585,
+            1.5017805895450707,
+            6.592243911021967,
+            -9.925486373960158,
+            -7.134800104191736,
+            -4.915772925181514,
+            -9.137166899591985,
+            9.403683415346574,
+            -9.831502572671727,
+            -2.01231810920369,
+            -6.5976898409038665,
+            -8.269321065543842,
+            8.281030248217476,
+            1.645282309888799,
+            -1.486272662516086,
+            -4.998753723234106,
+            -0.9209934547883556,
+            -9.434256078100471,
+            9.81323851825412
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            5.498841374763742,
+            1.7662660534986596,
+            -2.815573112568557,
+            -6.048312187382399,
+            9.49753657859197,
+            -2.1015747067374635,
+            -4.079037092104509,
+            5.314039986892048,
+            0.0387145550620982,
+            -0.30728287605858995,
+            4.975426828050438,
+            3.4626017503711424,
+            8.605685214066689,
+            1.5140481393702743,
+            2.009095893644295,
+            -0.3105867764637402,
+            -4.244836158037981,
+            -3.5506834915660024,
+            -2.5953286338985615,
+            -4.999806170449843,
+            3.1189506609780526,
+            9.70514084988082,
+            9.546739178733759,
+            -6.189505543544822
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "shape": [24],
+        "data": [
+          1,
+          1,
+          1,
+          0,
+          1,
+          0,
+          0,
+          0,
+          1,
+          1,
+          1,
+          1,
+          0,
+          1,
+          1,
+          1,
+          1,
+          0,
+          0,
+          0,
+          1,
+          1,
+          1,
+          0
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "lesserOrEqual float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/linear.json b/tests/wpt/tests/webnn/resources/test_data/linear.json
index ded1d2d7e35..6cbb84e9cb0 100644
--- a/tests/wpt/tests/webnn/resources/test_data/linear.json
+++ b/tests/wpt/tests/webnn/resources/test_data/linear.json
@@ -1,5 +1,72 @@
 { // linear: Calculate a linear function y = alpha * x + beta on the input tensor.
   "tests": [
+    {
+      "name": "linear float32 1D constant tensor default options", // default options: {alpha: 1, beta: 0}
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -1.1225161816883542,
+            -6.605223195131225,
+            -1.9555539248683687,
+            -4.598548331438281,
+            4.234208072658522,
+            3.097542121236385,
+            3.7465923873418348,
+            -4.487029772637743,
+            6.407402114982858,
+            -4.354544013606705,
+            -5.8190925441357955,
+            3.7214346452179328,
+            -6.330114110872294,
+            8.580595073862398,
+            -6.764922344398516,
+            6.433565829855674,
+            -9.708685944356201,
+            2.6431380232113746,
+            5.214088864824586,
+            9.658617012096975,
+            -8.72174939837989,
+            -0.4533396492565025,
+            9.992619953447026,
+            -6.469674921617137
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -1.12251615524292,
+          -6.605223178863525,
+          -1.9555538892745972,
+          -4.598548412322998,
+          4.234208106994629,
+          3.0975420475006104,
+          3.7465922832489014,
+          -4.487029552459717,
+          6.407402038574219,
+          -4.354544162750244,
+          -5.819092750549316,
+          3.7214345932006836,
+          -6.330113887786865,
+          8.580595016479492,
+          -6.764922142028809,
+          6.433565616607666,
+          -9.708685874938965,
+          2.6431379318237305,
+          5.2140889167785645,
+          9.65861701965332,
+          -8.721749305725098,
+          -0.4533396363258362,
+          9.992619514465332,
+          -6.469675064086914
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "linear float32 1D tensor default options", // default options: {alpha: 1, beta: 0}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/log.json b/tests/wpt/tests/webnn/resources/test_data/log.json
index c48406e7075..0481061272d 100644
--- a/tests/wpt/tests/webnn/resources/test_data/log.json
+++ b/tests/wpt/tests/webnn/resources/test_data/log.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "log float32 positive 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data":[
+            63.82541897073002,
+            25.31772341801677,
+            96.44790987312221,
+            40.9185632583299,
+            36.57906966041302,
+            57.81629837118902,
+            10.057244454482062,
+            17.836828533595984,
+            50.79246415149721,
+            83.86059370830392,
+            12.065509440949572,
+            22.702478725761654,
+            47.55981402665108,
+            17.543881349985526,
+            32.65243800095941,
+            20.35301082726726,
+            52.54472350026202,
+            45.60880392588138,
+            30.38581309524917,
+            13.70955827062823,
+            10.39676015729949,
+            50.840946828645464,
+            5.682034333775321,
+            94.02275663421658
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          4.15615177154541,
+          3.2315046787261963,
+          4.569003105163574,
+          3.7115838527679443,
+          3.5994763374328613,
+          4.057270526885986,
+          2.308293104171753,
+          2.88126540184021,
+          3.927747964859009,
+          4.4291558265686035,
+          2.4903509616851807,
+          3.122474193572998,
+          3.861988067626953,
+          2.8647050857543945,
+          3.48591947555542,
+          3.0132288932800293,
+          3.9616646766662598,
+          3.820100784301758,
+          3.413975715637207,
+          2.618093252182007,
+          2.34149432182312,
+          3.9287021160125732,
+          1.7373093366622925,
+          4.54353666305542
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "log float32 positive 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/logical_not.json b/tests/wpt/tests/webnn/resources/test_data/logical_not.json
index 5cb3208c786..3a37652a134 100644
--- a/tests/wpt/tests/webnn/resources/test_data/logical_not.json
+++ b/tests/wpt/tests/webnn/resources/test_data/logical_not.json
@@ -20,6 +20,73 @@
         "type": "uint8"
       }
     },
+    {
+      "name": "logicalNot uint8 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            204,
+            130,
+            90,
+            0,
+            147,
+            42,
+            10,
+            18,
+            13,
+            235,
+            0,
+            233,
+            53,
+            83,
+            9,
+            254,
+            69,
+            56,
+            219,
+            109,
+            171,
+            0,
+            228,
+            135
+          ],
+          "type": "uint8",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          0,
+          0,
+          0,
+          1,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          1,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          1,
+          0,
+          0
+        ],
+        "type": "uint8"
+      }
+    },
     {
       "name": "logicalNot uint8 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/matmul.json b/tests/wpt/tests/webnn/resources/test_data/matmul.json
index 6e0423a68d3..2477b78add4 100644
--- a/tests/wpt/tests/webnn/resources/test_data/matmul.json
+++ b/tests/wpt/tests/webnn/resources/test_data/matmul.json
@@ -1,5 +1,37 @@
 {
   "tests": [
+    {
+      "name": "matmul float32 constant 1D and 1D tensors all positive produces a scalar",
+      "inputs": {
+        "a": {
+          "shape": [4],
+          "data": [
+            50.10142534731317,
+            22.2193058046253,
+            34.65448469299386,
+            36.35148095671881
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [4],
+          "data": [
+            27.829805134194842,
+            83.14548502311283,
+            34.4128942110155,
+            83.20379675185079
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 7458.89013671875,
+        "type": "float32"
+      }
+    },
     {
       "name": "matmul float32 1D and 1D tensors all positive produces a scalar",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/max.json b/tests/wpt/tests/webnn/resources/test_data/max.json
index 27a258248fc..26285042d04 100644
--- a/tests/wpt/tests/webnn/resources/test_data/max.json
+++ b/tests/wpt/tests/webnn/resources/test_data/max.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "max float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            17.729091355190548,
+            88.14807331138127,
+            -12.79482748560001,
+            11.817361453415515,
+            19.513022179766494,
+            -62.87843656259127,
+            50.77191512294212,
+            -56.91352259821851,
+            50.572543533605796,
+            -96.00484496901664,
+            50.21433885008736,
+            20.59501102482639,
+            -60.69954854047626,
+            -96.84203452345174,
+            57.258868129331574,
+            -56.29146148481858,
+            73.7165958518618,
+            21.347652653042374,
+            79.85667318536576,
+            -22.91845979108436,
+            1.2300019204149066,
+            65.67965067534072,
+            99.89971317042682,
+            -62.321684141101045
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
+            -34.504351374665106,
+            85.7347144113418,
+            25.81801706847253,
+            -91.37040900746763,
+            87.01370408789617,
+            0.17744044937266779,
+            74.88266681438157,
+            -4.169913633773888,
+            -73.76497938350255,
+            55.38879910920386,
+            -58.69169647961585,
+            -67.62333258102981,
+            -89.83530842960631,
+            -8.275739745367574,
+            97.5957755490123,
+            -48.96886862489005,
+            95.34497928951401,
+            -97.36359789785926,
+            -59.90717913787087,
+            97.15334887926792,
+            -40.226924090258805,
+            -61.51427015643396,
+            33.36324314194775,
+            12.693191672027254
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          17.72909164428711,
+          88.1480712890625,
+          25.818017959594727,
+          11.817361831665039,
+          87.01370239257812,
+          0.17744044959545135,
+          74.8826675415039,
+          -4.1699137687683105,
+          50.57254409790039,
+          55.388797760009766,
+          50.21434020996094,
+          20.59501075744629,
+          -60.699546813964844,
+          -8.275739669799805,
+          97.59577178955078,
+          -48.968868255615234,
+          95.34497833251953,
+          21.347652435302734,
+          79.85667419433594,
+          97.15335083007812,
+          1.2300019264221191,
+          65.67964935302734,
+          99.89971160888672,
+          12.693191528320312
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "max float32 1D tensors",
       "inputs": {
@@ -65,7 +163,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           17.72909164428711,
@@ -161,7 +259,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           17.72909164428711,
@@ -257,7 +355,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 3, 4],
         "data": [
           17.72909164428711,
@@ -353,7 +451,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           17.72909164428711,
@@ -449,7 +547,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 1, 2, 3],
         "data": [
           17.72909164428711,
@@ -522,7 +620,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           48.26115417480469,
@@ -600,7 +698,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           49.523128509521484,
@@ -676,7 +774,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           39.32178497314453,
@@ -749,7 +847,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           48.26115417480469,
diff --git a/tests/wpt/tests/webnn/resources/test_data/max_pool2d.json b/tests/wpt/tests/webnn/resources/test_data/max_pool2d.json
index cf426620e56..4532843d2b5 100644
--- a/tests/wpt/tests/webnn/resources/test_data/max_pool2d.json
+++ b/tests/wpt/tests/webnn/resources/test_data/max_pool2d.json
@@ -1,5 +1,76 @@
 {
   "tests": [
+    {
+      "name": "maxPool2d float32 4D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [1, 2, 5, 5],
+          "data": [
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+            15.93575469730375,
+            -78.77953474824318,
+            72.33577555559427
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 1, 1],
+        "data": [
+          99.28312683105469,
+          81.73119354248047
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "maxPool2d float32 4D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/min.json b/tests/wpt/tests/webnn/resources/test_data/min.json
index f5ea4779f40..a08e6514286 100644
--- a/tests/wpt/tests/webnn/resources/test_data/min.json
+++ b/tests/wpt/tests/webnn/resources/test_data/min.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "min float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
+            -36.069532266228244,
+            -38.22545078196744,
+            62.07444236586957,
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+            -33.7456195461658,
+            -21.701524895337613,
+            4.945605121041879
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
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+            20.14988118692149,
+            41.950685196569594,
+            23.482911517986963
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+          -38.2254524230957,
+          51.280174255371094,
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+        "type": "float32"
+      }
+    },
     {
       "name": "min float32 1D tensors",
       "inputs": {
@@ -65,7 +163,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           -40.10139083862305,
@@ -161,7 +259,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           -40.10139083862305,
@@ -257,7 +355,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 3, 4],
         "data": [
           -40.10139083862305,
@@ -353,7 +451,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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         "data": [
           -40.10139083862305,
@@ -449,7 +547,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 1, 2, 3],
         "data": [
           -40.10139083862305,
@@ -522,7 +620,7 @@
         }
       },
       "expected": {
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+        "name": "output",
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         "data": [
           -36.06953048706055,
@@ -600,7 +698,7 @@
         }
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       "expected": {
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+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -36.06953048706055,
@@ -676,7 +774,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -36.06953048706055,
@@ -749,7 +847,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -36.06953048706055,
diff --git a/tests/wpt/tests/webnn/resources/test_data/mul.json b/tests/wpt/tests/webnn/resources/test_data/mul.json
index e6487cfc591..3de90184273 100644
--- a/tests/wpt/tests/webnn/resources/test_data/mul.json
+++ b/tests/wpt/tests/webnn/resources/test_data/mul.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "mul float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
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+            11.907459336794048,
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+            3.3092826784791214,
+            9.88400353323415
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
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+            -11.11965362061676,
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+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+        "type": "float32"
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+    },
     {
       "name": "mul float32 1D tensors",
       "inputs": {
@@ -65,7 +163,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           3681.4443359375,
@@ -161,7 +259,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           3681.4443359375,
@@ -257,7 +355,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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         "data": [
           3681.4443359375,
@@ -353,7 +451,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           3681.4443359375,
@@ -449,7 +547,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 1, 2, 3],
         "data": [
           3681.4443359375,
@@ -522,7 +620,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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         "data": [
           3315.18994140625,
@@ -600,7 +698,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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         "data": [
           -4778.197265625,
@@ -676,7 +774,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           427.1091003417969,
@@ -749,7 +847,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           3315.18994140625,
diff --git a/tests/wpt/tests/webnn/resources/test_data/neg.json b/tests/wpt/tests/webnn/resources/test_data/neg.json
index 8a1eea34f95..34dee53df16 100644
--- a/tests/wpt/tests/webnn/resources/test_data/neg.json
+++ b/tests/wpt/tests/webnn/resources/test_data/neg.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "neg float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -58.334503020192145,
+            94.230451435346,
+            -67.69306915096101,
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+            -25.024961990153656,
+            22.26478329228287,
+            35.29130058751991,
+            -86.18817022134313
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+        "type": "float32"
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     {
       "name": "neg float32 1D tensor",
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diff --git a/tests/wpt/tests/webnn/resources/test_data/pad.json b/tests/wpt/tests/webnn/resources/test_data/pad.json
index ac4834d7f09..53e8ed8f597 100644
--- a/tests/wpt/tests/webnn/resources/test_data/pad.json
+++ b/tests/wpt/tests/webnn/resources/test_data/pad.json
@@ -1,5 +1,45 @@
 {
   "tests": [
+    {
+      "name": "pad float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [9],
+          "data": [
+            22.763617617214834,
+            -21.16852940391331,
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+            -47.88219132680065,
+            68.7255776612235
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "beginningPadding": [1],
+      "endingPadding": [1],
+      "expected": {
+        "shape": [11],
+        "data": [
+          0,
+          22.76361846923828,
+          -21.168529510498047,
+          -91.66168975830078,
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+          60.51472091674805,
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+          -60.643272399902344,
+          -47.8821907043457,
+          68.72557830810547,
+          0
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "pad float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/pow.json b/tests/wpt/tests/webnn/resources/test_data/pow.json
index a097c21d9ef..1738722b10b 100644
--- a/tests/wpt/tests/webnn/resources/test_data/pow.json
+++ b/tests/wpt/tests/webnn/resources/test_data/pow.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "pow float32 constant 1D base tensor and 1D integer exponent tensor",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
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+            -0.06310698009783522,
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+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "b": {
+          "shape": [24],
+          "data": [
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+            4,
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+            -5,
+            -5,
+            7,
+            -6
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+          6.316321332633379e-8,
+          -1.0973203501407625e-7,
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+          -1667.201416015625,
+          -0.16149713099002838,
+          -0.00015812950732652098,
+          485079424,
+          3.584487018315485e-8
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "pow float32 1D base tensor and 1D integer exponent tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/prelu.json b/tests/wpt/tests/webnn/resources/test_data/prelu.json
index e45e12cd4b6..cf79bee7a9d 100644
--- a/tests/wpt/tests/webnn/resources/test_data/prelu.json
+++ b/tests/wpt/tests/webnn/resources/test_data/prelu.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "prelu float32 1D constant tensors",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -2.5491681672317235,
+            -4.794857500523286,
+            8.413617520687886,
+            6.108623511441287,
+            -8.492292847462334,
+            3.3143364551069876,
+            1.1687212422078108,
+            -0.1417628422981423,
+            -6.714651930677875,
+            5.787421746282195,
+            -3.7556274239369847,
+            -4.898286418001732,
+            7.329515995865023,
+            -3.9542297833176665,
+            7.067297201348715,
+            9.439736453375971,
+            -2.5581801134299775,
+            -8.658834185932482,
+            8.475073893236225,
+            4.551425642121982,
+            -9.267870491380243,
+            -0.26217744010265776,
+            1.325895534951659,
+            -7.418311114031475
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "slope": {
+          "shape": [24],
+          "data": [
+            9.343093097130314,
+            0.2800687126385206,
+            -4.617085001507579,
+            1.1202747481570352,
+            -1.4334710772165593,
+            -3.157594908065091,
+            -6.289953987035659,
+            -5.010787777546328,
+            -6.899077379471157,
+            3.572534824190212,
+            6.861966530502535,
+            -1.9615313732548287,
+            4.583203900668886,
+            2.664350255679274,
+            9.19295531798543,
+            -9.554700087649,
+            -5.505102187715796,
+            -2.3927369956553557,
+            3.5821293765315954,
+            -2.32240037283157,
+            -1.9816573593209075,
+            4.155890213640276,
+            -1.7995220850663962,
+            9.29585020267449
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -23.817113876342773,
+          -1.342889666557312,
+          8.413617134094238,
+          6.108623504638672,
+          12.173455238342285,
+          3.3143365383148193,
+          1.1687211990356445,
+          0.7103435397148132,
+          46.32490539550781,
+          5.787421703338623,
+          -25.7709903717041,
+          9.608142852783203,
+          7.3295159339904785,
+          -10.535453796386719,
+          7.067296981811523,
+          9.439736366271973,
+          14.083043098449707,
+          20.718313217163086,
+          8.47507381439209,
+          4.551425457000732,
+          18.365745544433594,
+          -1.0895805358886719,
+          1.3258955478668213,
+          -68.95950317382812
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "prelu float32 1D tensors",
       "inputs": {
@@ -66,7 +164,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           -23.817113876342773,
@@ -163,7 +261,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           -23.817113876342773,
@@ -260,7 +358,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 3, 4],
         "data": [
           -23.817113876342773,
@@ -357,7 +455,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -23.817113876342773,
@@ -454,7 +552,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 1, 2, 3],
         "data": [
           -23.817113876342773,
@@ -530,7 +628,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -12.934283256530762,
@@ -604,7 +702,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -12.775040626525879,
@@ -683,7 +781,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -12.425349235534668,
@@ -759,7 +857,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -12.934283256530762,
@@ -833,7 +931,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
           -12.775040626525879,
diff --git a/tests/wpt/tests/webnn/resources/test_data/reciprocal.json b/tests/wpt/tests/webnn/resources/test_data/reciprocal.json
index dce56e5f57d..c71ac280050 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reciprocal.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reciprocal.json
@@ -20,6 +20,73 @@
         "type": "float32"
       }
     },
+    {
+      "name": "reciprocal float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -1.011086269320547,
+            4.6215385203163315,
+            2.4173768502126727,
+            -8.934871773645101,
+            -3.348558485147799,
+            -8.803302423903414,
+            8.82632175955639,
+            6.572828698368518,
+            6.639494748363678,
+            2.6842704650429496,
+            -4.627160556770815,
+            -6.873653395070409,
+            -1.185412145486616,
+            0.9572811852263605,
+            0.021320551999082227,
+            0.35645850544829827,
+            4.827780063442164,
+            1.312808185701284,
+            8.246278209083616,
+            -0.20391698798075097,
+            -9.039937028172055,
+            9.94280947774324,
+            -9.540112102987099,
+            -0.08022661906399975
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.9890353083610535,
+          0.21637815237045288,
+          0.4136715531349182,
+          -0.111921027302742,
+          -0.29863595962524414,
+          -0.11359372735023499,
+          0.1132974773645401,
+          0.1521414965391159,
+          0.15061387419700623,
+          0.3725407123565674,
+          -0.21611526608467102,
+          -0.14548304677009583,
+          -0.8435884118080139,
+          1.044625163078308,
+          46.90310287475586,
+          2.805375576019287,
+          0.20713452994823456,
+          0.761725902557373,
+          0.12126683443784714,
+          -4.903956413269043,
+          -0.11062023788690567,
+          0.10057520121335983,
+          -0.10482056438922882,
+          -12.464690208435059
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "reciprocal float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_l1.json b/tests/wpt/tests/webnn/resources/test_data/reduce_l1.json
index aa169299c7c..7cbc4425118 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_l1.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_l1.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceL1 float32 1D constant tensor all positive default options", // default options: {axes: null, keepDimensions: false}
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            5.508826448139126,
+            50.61575563515446,
+            1.6773050539454992,
+            84.21352292914005,
+            15.664374631289203,
+            52.89714899357876,
+            9.12515782683123,
+            28.93762412170997,
+            12.567061064158146,
+            11.399989904078245,
+            86.91246376729916,
+            64.51329469980782,
+            71.28342153263038,
+            76.34410635436484,
+            41.53409150301335,
+            97.56533284219819,
+            31.803831597266385,
+            6.0897547388209405,
+            61.70843555684953,
+            69.76119433406723,
+            38.91940474525253,
+            52.28833355637117,
+            22.31783714884341,
+            99.0719229634137
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 1092.72021484375,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceL1 float32 1D tensor all positive default options", // default options: {axes: null, keepDimensions: false}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_l2.json b/tests/wpt/tests/webnn/resources/test_data/reduce_l2.json
index 73397cbb7a8..7e59a45d5e2 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_l2.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_l2.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceL2 float32 1D constant tensor all positive default options", // default options: {axes: null, keepDimensions: false}
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            4.860227954324237,
+            88.23184532015614,
+            54.489688892595865,
+            64.75027573238448,
+            6.855991445231058,
+            91.3987084155092,
+            41.888577644260664,
+            73.65445188651776,
+            35.31573479319383,
+            48.345430062443896,
+            82.3919051922353,
+            77.86200561022456,
+            93.31141688733462,
+            62.486883544675194,
+            60.292898644959706,
+            13.23059966965019,
+            20.535988317971942,
+            53.451616950541414,
+            11.32008585820996,
+            64.75763553379184,
+            43.65894603418228,
+            0.8374307376408652,
+            0.6848266407317727,
+            33.504704671527506
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 272.0996398925781,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceL2 float32 1D tensor all positive default options", // default options: {axes: null, keepDimensions: false}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum.json b/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum.json
index 2e1fee804fd..250398d227e 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceLogSum float32 1D constant tensor all non-negative default options", // default options: {axes: null, keepDimensions: false}
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            64.54826901463852,
+            97.87423374006126,
+            26.529027351852186,
+            79.79046651888517,
+            50.394988743199434,
+            14.578406888832252,
+            20.86681803845336,
+            32.43873432263156,
+            64.91234005889837,
+            71.54029915166349,
+            11.13706890220647,
+            55.07930697185586,
+            43.791352286892106,
+            13.831947671728972,
+            97.39019470916091,
+            35.50775651228035,
+            52.275862097336166,
+            82.838655037009,
+            8.568099335705881,
+            0.8337112078307563,
+            69.23145833259072,
+            3.8541642374881446,
+            70.55673656397397,
+            71.99264788951747
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 7.039101600646973,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceLogSum float32 1D tensor all non-negative default options", // default options: {axes: null, keepDimensions: false}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum_exp.json b/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum_exp.json
index e5ebb2aba39..b7f39abd522 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum_exp.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_log_sum_exp.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceLogSumExp float32 1D constant tensor all positive default options", // default options: {axes: null, keepDimensions: false}
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            0.7974132976078829,
+            5.046889970229296,
+            8.520371090961714,
+            1.4063042363728728,
+            0.11882661415275164,
+            0.285854490277071,
+            1.9325640291685864,
+            3.7939957856803797,
+            2.6040233063490925,
+            4.937509735746763,
+            4.571482286709769,
+            0.7865120436262685,
+            0.21018670996660216,
+            9.063042370844672,
+            4.099809553408898,
+            4.596248815627706,
+            0.2549232349678032,
+            1.1594801326588255,
+            6.802876838759606,
+            5.23432518570901,
+            8.914905562420849,
+            9.166799240859705,
+            5.71750713886038,
+            0.3255050658627967
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 10.39477825164795,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceLogSumExp float32 1D tensor all positive default options", // default options: {axes: null, keepDimensions: false}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_max.json b/tests/wpt/tests/webnn/resources/test_data/reduce_max.json
index 4dd7098d03f..967aea8bf4d 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_max.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_max.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceMax float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            32.166585683408215,
+            90.42288038051404,
+            -26.341795469529572,
+            -7.147959324354275,
+            75.90379209491468,
+            -48.204211355965356,
+            -53.094252997077795,
+            66.66099234322033,
+            -96.16854360851454,
+            -88.30545253131574,
+            94.99645116994563,
+            37.28493087456198,
+            -42.209860696518845,
+            96.55397216250705,
+            0.8807230095547567,
+            62.504641219832195,
+            36.650633791794576,
+            99.77313292829271,
+            -72.86485546227293,
+            -46.03200926418318,
+            20.253753500247612,
+            -21.55738542170144,
+            -51.287275192229046,
+            -42.588327517032454
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 99.77313232421875,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceMax float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_mean.json b/tests/wpt/tests/webnn/resources/test_data/reduce_mean.json
index db20b17a835..5a48952c060 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_mean.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_mean.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceMean float32 1D constant tensor all positive default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            95.84498772347054,
+            75.69370054099012,
+            1.5417720846181426,
+            8.787033906673592,
+            70.08280339173061,
+            13.784331379836544,
+            20.006068194857885,
+            94.80963809344851,
+            25.829190184293417,
+            94.13260521032214,
+            67.72958187044576,
+            16.099351117563778,
+            92.19433555001908,
+            11.567352371276595,
+            52.705496151946285,
+            22.471793133903972,
+            3.6623324286590764,
+            20.2102781903039,
+            58.56523137489753,
+            28.673493080608758,
+            42.134198143189195,
+            21.637750690378144,
+            14.160698325191756,
+            15.127351396412191
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 40.31047439575195,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceMean float32 1D tensor all positive default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_min.json b/tests/wpt/tests/webnn/resources/test_data/reduce_min.json
index db6c0e22695..92de75e92ab 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_min.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_min.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceMin float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            -58.76195671214997,
+            -87.962299829198,
+            -70.13690195964651,
+            -53.61766646981643,
+            -39.50931280469092,
+            76.48815138549966,
+            -18.705087479309455,
+            44.78261924634546,
+            30.70233967738929,
+            61.463613873181146,
+            77.84043646028437,
+            -53.747413472322414,
+            -31.713543832764827,
+            -9.735438243016588,
+            77.93652481771113,
+            99.01705821629525,
+            73.39929943432298,
+            92.08459468237234,
+            -59.40851905900759,
+            -84.40769111096932,
+            75.88834177123843,
+            96.02651672898816,
+            -55.976554418350545,
+            -1.791101785391234
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": -87.9623031616211,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceMin float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_product.json b/tests/wpt/tests/webnn/resources/test_data/reduce_product.json
index 60484300bca..691bf4da9b3 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_product.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_product.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceProduct float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            -68.75911760233478,
+            99.4496130391401,
+            24.860555622046746,
+            -44.23515424391753,
+            -22.69974404385384,
+            79.97555172142995,
+            14.46502415218545,
+            49.231095225588376,
+            30.058706923717068,
+            69.45106401985521,
+            -20.15709647137976,
+            -58.02551401530734,
+            51.89660954258355,
+            -2.020799112914105,
+            39.392973241316554,
+            26.780734701055266,
+            -97.97651593223856,
+            48.66154478867011,
+            -85.19523905815305,
+            -18.169861657911653,
+            64.83759066937682,
+            -14.958838503675935,
+            -74.50931980014732,
+            -11.319679210869765
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 1.5855958784642327e+37,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceProduct float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_sum.json b/tests/wpt/tests/webnn/resources/test_data/reduce_sum.json
index 6da78ae804a..df47a1a2b26 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_sum.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_sum.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceSum float32 1D constant tensor all positive default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            69.6038605453285,
+            99.1748548274599,
+            32.782341359545676,
+            8.881362932730319,
+            16.094296257493014,
+            11.806894918510213,
+            32.64223805640243,
+            43.998363476438975,
+            77.01777099153088,
+            79.79425759062173,
+            45.007949804090174,
+            24.39779644056914,
+            57.50268541631618,
+            57.60172895173401,
+            80.26985885745457,
+            43.65110628848945,
+            87.50368667545843,
+            94.50203768533922,
+            35.54289690580114,
+            42.856416416096344,
+            88.58631651618441,
+            98.85772999308332,
+            25.62685451963782,
+            60.17613590317996
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 1313.87939453125,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceSum float32 1D tensor all positive default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reduce_sum_square.json b/tests/wpt/tests/webnn/resources/test_data/reduce_sum_square.json
index cf6bbb65d41..8ac373e4b36 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reduce_sum_square.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reduce_sum_square.json
@@ -1,5 +1,46 @@
 {
   "tests": [
+    {
+      "name": "reduceSumSquare float32 1D constant tensor all positive default options", // default options: {axes: null, keepDimensions: false}
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            52.5615351837915,
+            2.6261063680439234,
+            82.04877759500097,
+            14.401411284784604,
+            33.96051675758925,
+            83.93837980977771,
+            47.44504659398938,
+            19.177289239472593,
+            13.493006439137023,
+            44.15238362662202,
+            86.53118079678906,
+            70.20919468463771,
+            25.67262870756528,
+            79.73770192548034,
+            66.42284577584445,
+            70.40363336301188,
+            13.503327808732468,
+            41.22539754662389,
+            6.654552839238637,
+            85.79743668166222,
+            89.91348950671976,
+            53.55647451130674,
+            39.48537158474081,
+            3.9460408540454184
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "data": 73275.859375,
+        "type": "float32"
+      }
+    },
     {
       "name": "reduceSumSquare float32 1D tensor all positive default options", // default options: {axes: null, keepDimensions: false}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/relu.json b/tests/wpt/tests/webnn/resources/test_data/relu.json
index b4597891472..248902c6658 100644
--- a/tests/wpt/tests/webnn/resources/test_data/relu.json
+++ b/tests/wpt/tests/webnn/resources/test_data/relu.json
@@ -1,5 +1,72 @@
 {
   "tests": [ // relu input tensor of 1D to 5D with same data values
+  {
+    "name": "relu float32 1D constant tensor",
+    "inputs": {
+      "x": {
+        "shape": [24],
+        "data": [
+          79.04725231657116,
+          2.2503608756501166,
+          80.73939090529203,
+          63.90392076789547,
+          77.67340745512104,
+          -71.09157819044825,
+          -82.74703468427575,
+          -26.814426600801028,
+          -99.16788836397058,
+          -35.71083406288831,
+          18.36165830990626,
+          -37.36091648205435,
+          -52.8386119809162,
+          -10.408374773008958,
+          60.60291560236189,
+          -13.644198913810342,
+          -76.54250291031946,
+          -8.132338049258351,
+          51.51447452437017,
+          -51.63370281825297,
+          -64.567999424324,
+          -5.093302411117136,
+          15.354103550744384,
+          90.03858807393516
+        ],
+        "type": "float32",
+        "constant": true
+      }
+    },
+    "expected": {
+      "name": "output",
+      "shape": [24],
+      "data": [
+        79.04724884033203,
+        2.2503609657287598,
+        80.73938751220703,
+        63.9039192199707,
+        77.67340850830078,
+        0,
+        0,
+        0,
+        0,
+        0,
+        18.361658096313477,
+        0,
+        0,
+        0,
+        60.6029167175293,
+        0,
+        0,
+        0,
+        51.51447296142578,
+        0,
+        0,
+        0,
+        15.354103088378906,
+        90.03858947753906
+      ],
+      "type": "float32"
+    }
+  },
     {
       "name": "relu float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/reshape.json b/tests/wpt/tests/webnn/resources/test_data/reshape.json
index fbb93a8e03c..ada3daa4e2d 100644
--- a/tests/wpt/tests/webnn/resources/test_data/reshape.json
+++ b/tests/wpt/tests/webnn/resources/test_data/reshape.json
@@ -6,30 +6,30 @@
         "input": {
           "shape": [2, 3, 4],
           "data": [
-            -30.056147250771076,
-            99.5694232746736,
-            88.04620115823073,
-            -91.87507576772606,
-            -23.797235323955633,
-            -91.28665022600151,
-            -63.15204449663816,
-            12.066952464893262,
-            -96.1172904235943,
-            -44.77365489782947,
-            -80.08650883940432,
-            -64.4375694650447,
-            27.641954235862485,
-            -96.86306613475395,
-            83.68347403572196,
-            50.599484132010815,
-            -20.187656772788642,
-            -1.3904608012750117,
-            -96.9360325497362,
-            65.34144119048645,
-            34.835993949837274,
-            62.01485845563673,
-            -2.8698414892852355,
-            27.903749097190158
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
           ],
           "type": "float32"
         }
@@ -73,30 +73,30 @@
         "input": {
           "shape": [4, 1, 1, 1, 6],
           "data": [
-            -30.056147250771076,
-            99.5694232746736,
-            88.04620115823073,
-            -91.87507576772606,
-            -23.797235323955633,
-            -91.28665022600151,
-            -63.15204449663816,
-            12.066952464893262,
-            -96.1172904235943,
-            -44.77365489782947,
-            -80.08650883940432,
-            -64.4375694650447,
-            27.641954235862485,
-            -96.86306613475395,
-            83.68347403572196,
-            50.599484132010815,
-            -20.187656772788642,
-            -1.3904608012750117,
-            -96.9360325497362,
-            65.34144119048645,
-            34.835993949837274,
-            62.01485845563673,
-            -2.8698414892852355,
-            27.903749097190158
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
           ],
           "type": "float32"
         }
@@ -140,30 +140,30 @@
         "input": {
           "shape": [2, 2, 2, 3],
           "data": [
-            -30.056147250771076,
-            99.5694232746736,
-            88.04620115823073,
-            -91.87507576772606,
-            -23.797235323955633,
-            -91.28665022600151,
-            -63.15204449663816,
-            12.066952464893262,
-            -96.1172904235943,
-            -44.77365489782947,
-            -80.08650883940432,
-            -64.4375694650447,
-            27.641954235862485,
-            -96.86306613475395,
-            83.68347403572196,
-            50.599484132010815,
-            -20.187656772788642,
-            -1.3904608012750117,
-            -96.9360325497362,
-            65.34144119048645,
-            34.835993949837274,
-            62.01485845563673,
-            -2.8698414892852355,
-            27.903749097190158
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
           ],
           "type": "float32"
         }
@@ -207,30 +207,30 @@
         "input": {
           "shape": [3, 2, 2, 2],
           "data": [
-            -30.056147250771076,
-            99.5694232746736,
-            88.04620115823073,
-            -91.87507576772606,
-            -23.797235323955633,
-            -91.28665022600151,
-            -63.15204449663816,
-            12.066952464893262,
-            -96.1172904235943,
-            -44.77365489782947,
-            -80.08650883940432,
-            -64.4375694650447,
-            27.641954235862485,
-            -96.86306613475395,
-            83.68347403572196,
-            50.599484132010815,
-            -20.187656772788642,
-            -1.3904608012750117,
-            -96.9360325497362,
-            65.34144119048645,
-            34.835993949837274,
-            62.01485845563673,
-            -2.8698414892852355,
-            27.903749097190158
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
           ],
           "type": "float32"
         }
@@ -274,30 +274,30 @@
         "input": {
           "shape": [3, 2, 2, 2],
           "data": [
-            -30.056147250771076,
-            99.5694232746736,
-            88.04620115823073,
-            -91.87507576772606,
-            -23.797235323955633,
-            -91.28665022600151,
-            -63.15204449663816,
-            12.066952464893262,
-            -96.1172904235943,
-            -44.77365489782947,
-            -80.08650883940432,
-            -64.4375694650447,
-            27.641954235862485,
-            -96.86306613475395,
-            83.68347403572196,
-            50.599484132010815,
-            -20.187656772788642,
-            -1.3904608012750117,
-            -96.9360325497362,
-            65.34144119048645,
-            34.835993949837274,
-            62.01485845563673,
-            -2.8698414892852355,
-            27.903749097190158
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
           ],
           "type": "float32"
         }
@@ -334,6 +334,1723 @@
         ],
         "type": "float32"
       }
+    },
+    {
+      "name": "reshape (squeeze) float32 2D tensor by eliminating one dimension",
+      "inputs": {
+        "input": {
+          "shape": [1, 24],
+          "data": [
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [24],
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
+          -23.7972354888916,
+          -91.28665161132812,
+          -63.15204620361328,
+          12.0669527053833,
+          -96.1172866821289,
+          -44.77365493774414,
+          -80.08650970458984,
+          -64.43756866455078,
+          27.64195442199707,
+          -96.86306762695312,
+          83.6834716796875,
+          50.599483489990234,
+          -20.18765640258789,
+          -1.3904608488082886,
+          -96.93603515625,
+          65.34143829345703,
+          34.835994720458984,
+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "reshape (squeeze) float32 3D tensor by eliminating one dimension",
+      "inputs": {
+        "input": {
+          "shape": [4, 1, 6],
+          "data": [
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
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+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [4, 6],
+      "expected": {
+        "name": "output",
+        "shape": [4, 6],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
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+          -96.86306762695312,
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+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "reshape (squeeze) float32 3D tensor by eliminating two dimensions",
+      "inputs": {
+        "input": {
+          "shape": [1, 24, 1],
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+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [2, 12],
+      "expected": {
+        "name": "output",
+        "shape": [2, 12],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
+          -23.7972354888916,
+          -91.28665161132812,
+          -63.15204620361328,
+          12.0669527053833,
+          -96.1172866821289,
+          -44.77365493774414,
+          -80.08650970458984,
+          -64.43756866455078,
+          27.64195442199707,
+          -96.86306762695312,
+          83.6834716796875,
+          50.599483489990234,
+          -20.18765640258789,
+          -1.3904608488082886,
+          -96.93603515625,
+          65.34143829345703,
+          34.835994720458984,
+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "reshape (flatten) float32 4D to 2D",
+      "inputs": {
+        "input": {
+          "shape": [2, 2, 2, 3],
+          "data": [
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [4, 6],
+      "expected": {
+        "name": "output",
+        "shape": [4, 6],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
+          -23.7972354888916,
+          -91.28665161132812,
+          -63.15204620361328,
+          12.0669527053833,
+          -96.1172866821289,
+          -44.77365493774414,
+          -80.08650970458984,
+          -64.43756866455078,
+          27.64195442199707,
+          -96.86306762695312,
+          83.6834716796875,
+          50.599483489990234,
+          -20.18765640258789,
+          -1.3904608488082886,
+          -96.93603515625,
+          65.34143829345703,
+          34.835994720458984,
+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "reshape (flatten) float32 4D to 2D exclusive 1st dimension",
+      "inputs": {
+        "input": {
+          "shape": [2, 2, 2, 3],
+          "data": [
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
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+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [1, 24],
+      "expected": {
+        "name": "output",
+        "shape": [1, 24],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
+          -23.7972354888916,
+          -91.28665161132812,
+          -63.15204620361328,
+          12.0669527053833,
+          -96.1172866821289,
+          -44.77365493774414,
+          -80.08650970458984,
+          -64.43756866455078,
+          27.64195442199707,
+          -96.86306762695312,
+          83.6834716796875,
+          50.599483489990234,
+          -20.18765640258789,
+          -1.3904608488082886,
+          -96.93603515625,
+          65.34143829345703,
+          34.835994720458984,
+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "reshape (flatten) float32 4D to 2D exclusive 4th dimension",
+      "inputs": {
+        "input": {
+          "shape": [2, 2, 2, 3],
+          "data": [
+            -30.0561466217041,
+            99.56941986083984,
+            88.04620361328125,
+            -91.87507629394531,
+            -23.7972354888916,
+            -91.28665161132812,
+            -63.15204620361328,
+            12.0669527053833,
+            -96.1172866821289,
+            -44.77365493774414,
+            -80.08650970458984,
+            -64.43756866455078,
+            27.64195442199707,
+            -96.86306762695312,
+            83.6834716796875,
+            50.599483489990234,
+            -20.18765640258789,
+            -1.3904608488082886,
+            -96.93603515625,
+            65.34143829345703,
+            34.835994720458984,
+            62.01485824584961,
+            -2.8698415756225586,
+            27.903749465942383
+          ],
+          "type": "float32"
+        }
+      },
+      "newShape": [24, 1],
+      "expected": {
+        "name": "output",
+        "shape": [24, 1],
+        "data": [
+          -30.0561466217041,
+          99.56941986083984,
+          88.04620361328125,
+          -91.87507629394531,
+          -23.7972354888916,
+          -91.28665161132812,
+          -63.15204620361328,
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+          -96.1172866821289,
+          -44.77365493774414,
+          -80.08650970458984,
+          -64.43756866455078,
+          27.64195442199707,
+          -96.86306762695312,
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+          50.599483489990234,
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+          -1.3904608488082886,
+          -96.93603515625,
+          65.34143829345703,
+          34.835994720458984,
+          62.01485824584961,
+          -2.8698415756225586,
+          27.903749465942383
+        ],
+        "type": "float32"
+      }
     }
   ]
 }
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/test_data/sigmoid.json b/tests/wpt/tests/webnn/resources/test_data/sigmoid.json
index c2333363217..69756fbb9c2 100644
--- a/tests/wpt/tests/webnn/resources/test_data/sigmoid.json
+++ b/tests/wpt/tests/webnn/resources/test_data/sigmoid.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "sigmoid float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            -0.3769951326450487,
+            -0.6848450678710742,
+            -5.98887201399973,
+            4.431885748123033,
+            -0.9386848809986663,
+            4.591195578857441,
+            -2.5067027776293456,
+            1.5669522849917055,
+            -2.596473257404651,
+            -3.647293770068697,
+            2.6785236795981433,
+            -3.105160168372808,
+            2.258501824714781,
+            -0.2865157795154527,
+            4.640436413897461,
+            1.0606156163391969,
+            -3.536252613252593,
+            0.44104409560934066,
+            4.79146007344656,
+            2.0745488579530846,
+            0.8354471082395971,
+            -5.433595857448718,
+            -4.184835816765236,
+            -2.484982429169702
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          0.4068518280982971,
+          0.33518078923225403,
+          0.0025002227630466223,
+          0.9882476925849915,
+          0.28116607666015625,
+          0.9899610877037048,
+          0.07538963109254837,
+          0.8273487091064453,
+          0.0693657398223877,
+          0.02539960853755474,
+          0.9357474446296692,
+          0.04289489984512329,
+          0.9053813815116882,
+          0.42885708808898926,
+          0.9904388189315796,
+          0.7428081631660461,
+          0.0282981526106596,
+          0.6085078120231628,
+          0.9917680025100708,
+          0.8884047269821167,
+          0.6975054740905762,
+          0.004348373040556908,
+          0.014996387995779514,
+          0.07691769301891327
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "sigmoid float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/sin.json b/tests/wpt/tests/webnn/resources/test_data/sin.json
index 3cc4771a336..1fe76df45fb 100644
--- a/tests/wpt/tests/webnn/resources/test_data/sin.json
+++ b/tests/wpt/tests/webnn/resources/test_data/sin.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "sin float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            79.78058345331559,
+            55.00573351892254,
+            -28.052533009972393,
+            -31.644301395318934,
+            56.28375442556609,
+            -96.18512135074778,
+            -72.99826309079677,
+            -3.4241827262925852,
+            84.02549499853444,
+            5.030371842664394,
+            -9.512612392430725,
+            9.540593026227612,
+            -25.267252298101056,
+            -20.831639431837345,
+            -32.024754770208745,
+            -55.69102662814118,
+            15.92748126354438,
+            -57.8835344652012,
+            31.0160642695962,
+            -94.88304659350737,
+            -84.58417183546084,
+            44.848744233535655,
+            -19.000272686086987,
+            -48.03827737658466
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          -0.946033775806427,
+          -0.9996118545532227,
+          -0.21998752653598785,
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+          0.6754903197288513,
+          0.27884384989738464,
+          0.7156150341033936,
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+          0.08772148936986923,
+          -0.11555644869804382,
+          -0.13410548865795135,
+          -0.9166066646575928,
+          -0.5719056725502014,
+          0.7563026547431946,
+          -0.21775959432125092,
+          -0.9722972512245178,
+          -0.38929200172424316,
+          -0.59339439868927,
+          -0.23656263947486877,
+          0.7620325684547424,
+          -0.15014687180519104,
+          0.7921885848045349
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "sin float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/slice.json b/tests/wpt/tests/webnn/resources/test_data/slice.json
index ed193dd6563..28cfd2c0e26 100644
--- a/tests/wpt/tests/webnn/resources/test_data/slice.json
+++ b/tests/wpt/tests/webnn/resources/test_data/slice.json
@@ -1,5 +1,62 @@
 {
   "tests": [
+    {
+      "name": "slice float32 1D constant tensor",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            28.846251144212147,
+            97.9541470229301,
+            -68.15961736262523,
+            14.978987588557175,
+            90.23090084798065,
+            76.59095547712559,
+            -24.556316258204532,
+            79.58749302462488,
+            65.21375982234204,
+            57.43970862960305,
+            74.41775256222849,
+            -4.513182026141791,
+            0.5424534704526991,
+            80.44634130202977,
+            28.327650022124686,
+            74.0261938866893,
+            -74.54558964005362,
+            -27.30604081001799,
+            -70.4277433212161,
+            59.82631931755259,
+            -58.46095416849133,
+            79.80571087632629,
+            -9.857854207596304,
+            42.66519880465225
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "starts": [12],
+      "sizes": [12],
+      "expected": {
+        "name": "output",
+        "shape": [12],
+        "data": [
+          0.5424534678459167,
+          80.44634246826172,
+          28.32765007019043,
+          74.02619171142578,
+          -74.54559326171875,
+          -27.306041717529297,
+          -70.42774200439453,
+          59.82632064819336,
+          -58.46095275878906,
+          79.80570983886719,
+          -9.857853889465332,
+          42.665199279785156
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "slice float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/softmax.json b/tests/wpt/tests/webnn/resources/test_data/softmax.json
index 52ea57c7632..ebb12114fc6 100644
--- a/tests/wpt/tests/webnn/resources/test_data/softmax.json
+++ b/tests/wpt/tests/webnn/resources/test_data/softmax.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "softmax float32 2D constant tensor all positive",
+      "inputs": {
+        "x": {
+          "shape": [4, 6],
+          "data": [
+            7.903734730203054,
+            6.358251623091922,
+            4.833756774572475,
+            9.579165187926348,
+            0.21071856783621445,
+            4.554958961778823,
+            7.150174113718282,
+            8.330297576341172,
+            1.535985791562966,
+            6.633619497318013,
+            1.45393689965033,
+            0.21341864769940821,
+            5.257819475802503,
+            8.1921378632378,
+            8.161730206898543,
+            2.8744343334015565,
+            8.950733525100087,
+            6.111632812590415,
+            1.6371468489476149,
+            0.2762612074523485,
+            5.028227187056009,
+            3.898326029997037,
+            2.8967114227178836,
+            6.8894703393234575
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [4, 6],
+        "data": [
+          0.15068615972995758,
+          0.03212761878967285,
+          0.006995180621743202,
+          0.8048291206359863,
+          0.00006871300138300285,
+          0.005293202120810747,
+          0.2057899534702301,
+          0.6698001027107239,
+          0.0007502624066546559,
+          0.1227685883641243,
+          0.0006911618984304368,
+          0.00019990770670119673,
+          0.012398251332342625,
+          0.23319464921951294,
+          0.22621041536331177,
+          0.0011435872875154018,
+          0.4979347288608551,
+          0.029118351638317108,
+          0.004253828432410955,
+          0.001090824487619102,
+          0.12633030116558075,
+          0.040812913328409195,
+          0.014990009367465973,
+          0.8125221133232117
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "softmax float32 2D tensor all positive",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/softplus.json b/tests/wpt/tests/webnn/resources/test_data/softplus.json
index 2b26e1439e3..eb05b7b2811 100644
--- a/tests/wpt/tests/webnn/resources/test_data/softplus.json
+++ b/tests/wpt/tests/webnn/resources/test_data/softplus.json
@@ -1,5 +1,72 @@
 { // softplus: The calculation follows the expression ln(1 + exp(steepness * x)) / steepness.
   "tests": [
+    {
+      "name": "softplus float32 1D constant tensor default options", // default options: {steepness: 1}
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
     {
       "name": "softplus float32 1D tensor default options", // default options: {steepness: 1}
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/softsign.json b/tests/wpt/tests/webnn/resources/test_data/softsign.json
index e3208b18ad4..290f6711d09 100644
--- a/tests/wpt/tests/webnn/resources/test_data/softsign.json
+++ b/tests/wpt/tests/webnn/resources/test_data/softsign.json
@@ -1,5 +1,72 @@
 { // softsign: The calculation follows the expression x / (1 + |x|).
   "tests": [
+    {
+      "name": "softsign positive float32 1D constant tensor",
+      "inputs": {
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+          "type": "float32",
+          "constant": true
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+      "expected": {
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     {
       "name": "softsign positive float32 1D tensor",
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diff --git a/tests/wpt/tests/webnn/resources/test_data/split.json b/tests/wpt/tests/webnn/resources/test_data/split.json
index e4216003c02..6432044ea20 100644
--- a/tests/wpt/tests/webnn/resources/test_data/split.json
+++ b/tests/wpt/tests/webnn/resources/test_data/split.json
@@ -1,5 +1,89 @@
 {
   "tests": [
+    {
+      "name": "split float32 1D constant tensor number splits default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
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+          "type": "float32",
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+      "splits": 3,
+      "expected": [
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     {
       "name": "split float32 1D tensor number splits default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/sqrt.json b/tests/wpt/tests/webnn/resources/test_data/sqrt.json
index be9666590bd..fa59308d45b 100644
--- a/tests/wpt/tests/webnn/resources/test_data/sqrt.json
+++ b/tests/wpt/tests/webnn/resources/test_data/sqrt.json
@@ -20,6 +20,73 @@
         "type": "float32"
       }
     },
+    {
+      "name": "sqrt float32 1D constant tensor",
+      "inputs": {
+        "x": {
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diff --git a/tests/wpt/tests/webnn/resources/test_data/squeeze.json b/tests/wpt/tests/webnn/resources/test_data/squeeze.json
deleted file mode 100644
index 88890fe8702..00000000000
--- a/tests/wpt/tests/webnn/resources/test_data/squeeze.json
+++ /dev/null
@@ -1,696 +0,0 @@
-{
-  "tests": [
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-        "data": [
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\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/test_data/sub.json b/tests/wpt/tests/webnn/resources/test_data/sub.json
index 4a3096313e1..207d9106b42 100644
--- a/tests/wpt/tests/webnn/resources/test_data/sub.json
+++ b/tests/wpt/tests/webnn/resources/test_data/sub.json
@@ -1,5 +1,103 @@
 {
   "tests": [
+    {
+      "name": "sub float32 1D constant tensors",
+      "inputs": {
+        "a": {
+          "shape": [24],
+          "data": [
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+            14.484682970108636,
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+            -20.503417738603375,
+            99.48707602133317
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+          "type": "float32",
+          "constant": true
+        },
+        "b": {
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+            31.998020251913943
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+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
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+    },
     {
       "name": "sub float32 1D tensors",
       "inputs": {
@@ -65,7 +163,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [24],
         "data": [
           122.72087097167969,
@@ -161,7 +259,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [4, 6],
         "data": [
           122.72087097167969,
@@ -257,7 +355,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 3, 4],
         "data": [
           122.72087097167969,
@@ -353,7 +451,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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         "data": [
           122.72087097167969,
@@ -449,7 +547,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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           122.72087097167969,
@@ -522,7 +620,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
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@@ -600,7 +698,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
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@@ -676,7 +774,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
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@@ -749,7 +847,7 @@
         }
       },
       "expected": {
-        "name": "ouput",
+        "name": "output",
         "shape": [2, 2, 2, 3],
         "data": [
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diff --git a/tests/wpt/tests/webnn/resources/test_data/tan.json b/tests/wpt/tests/webnn/resources/test_data/tan.json
index 857e2b65059..63c7056d905 100644
--- a/tests/wpt/tests/webnn/resources/test_data/tan.json
+++ b/tests/wpt/tests/webnn/resources/test_data/tan.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "tan float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            52.697813799029234,
+            70.06912795961244,
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+            0.15926108746810996
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+          "type": "float32",
+          "constant": true
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+      "expected": {
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+          0.16062140464782715
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+    },
     {
       "name": "tan float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/tanh.json b/tests/wpt/tests/webnn/resources/test_data/tanh.json
index 9e13b62472a..063c10623d8 100644
--- a/tests/wpt/tests/webnn/resources/test_data/tanh.json
+++ b/tests/wpt/tests/webnn/resources/test_data/tanh.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "tanh float32 1D constant tensor",
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            5.47352732138576,
+            -1.1535596038683664,
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+            -0.7563357776241926
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+          -0.8189298510551453,
+          0.38630160689353943,
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+          -0.6389135718345642
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+        "type": "float32"
+      }
+    },
     {
       "name": "tanh float32 1D tensor",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/transpose.json b/tests/wpt/tests/webnn/resources/test_data/transpose.json
index 03092031d9c..f7e6a7d2dd2 100644
--- a/tests/wpt/tests/webnn/resources/test_data/transpose.json
+++ b/tests/wpt/tests/webnn/resources/test_data/transpose.json
@@ -1,5 +1,72 @@
 {
   "tests": [
+    {
+      "name": "transpose float32 1D constant tensor default options",
+      "inputs": {
+        "input": {
+          "shape": [24],
+          "data": [
+            -45.67443169971317,
+            53.45924798828125,
+            -60.118491676622114,
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+            38.46682821671709,
+            2.1999381880991393
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+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
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+          5.62217378616333,
+          -25.66281509399414,
+          99.46284484863281,
+          -87.58920288085938,
+          -65.3779067993164,
+          -66.00990295410156,
+          38.466827392578125,
+          2.1999382972717285
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "transpose float32 1D tensor default options",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/where.json b/tests/wpt/tests/webnn/resources/test_data/where.json
index ce3cda4bad3..7c55b3171ae 100644
--- a/tests/wpt/tests/webnn/resources/test_data/where.json
+++ b/tests/wpt/tests/webnn/resources/test_data/where.json
@@ -34,6 +34,135 @@
         "type": "float32"
       }
     },
+    {
+      "name": "where float32 1D constant tensors",
+      "inputs": {
+        "condition": {
+          "shape": [24],
+          "data": [
+            241,
+            0,
+            85,
+            0,
+            227,
+            51,
+            202,
+            0,
+            104,
+            227,
+            129,
+            129,
+            175,
+            134,
+            130,
+            140,
+            103,
+            46,
+            158,
+            17,
+            0,
+            41,
+            94,
+            0
+          ],
+          "type": "uint8",
+          "constant": true
+        },
+        "trueValues": {
+          "shape": [24],
+          "data": [
+            70.27151489257812,
+            89.99047088623047,
+            -1.5351932048797607,
+            -83.77035522460938,
+            29.59670639038086,
+            -37.10446548461914,
+            -6.663239002227783,
+            -83.15333557128906,
+            -90.47624206542969,
+            -45.470706939697266,
+            50.38861083984375,
+            46.510799407958984,
+            47.503013610839844,
+            -21.95842933654785,
+            42.89878463745117,
+            -76.8262710571289,
+            67.0030746459961,
+            40.09717559814453,
+            -29.081029891967773,
+            -12.19106674194336,
+            -10.8577880859375,
+            -23.302522659301758,
+            30.851404190063477,
+            -58.82704544067383
+          ],
+          "type": "float32",
+          "constant": true
+        },
+        "falseValues": {
+          "shape": [24],
+          "data": [
+            90.44255065917969,
+            66.7642593383789,
+            -39.82423782348633,
+            -21.683168411254883,
+            -67.3449478149414,
+            -46.46003341674805,
+            -55.907073974609375,
+            65.5730209350586,
+            35.14354705810547,
+            11.960981369018555,
+            76.65287780761719,
+            60.741416931152344,
+            -93.93305206298828,
+            -30.397233963012695,
+            34.315250396728516,
+            7.7088470458984375,
+            -82.2353286743164,
+            91.12223052978516,
+            22.937334060668945,
+            74.97810363769531,
+            18.877336502075195,
+            62.31299591064453,
+            48.867103576660156,
+            -75.41789245605469
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          70.27151489257812,
+          66.7642593383789,
+          -1.5351932048797607,
+          -21.683168411254883,
+          29.59670639038086,
+          -37.10446548461914,
+          -6.663239002227783,
+          65.5730209350586,
+          -90.47624206542969,
+          -45.470706939697266,
+          50.38861083984375,
+          46.510799407958984,
+          47.503013610839844,
+          -21.95842933654785,
+          42.89878463745117,
+          -76.8262710571289,
+          67.0030746459961,
+          40.09717559814453,
+          -29.081029891967773,
+          -12.19106674194336,
+          18.877336502075195,
+          -23.302522659301758,
+          30.851404190063477,
+          -75.41789245605469
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "where float32 1D tensors",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/utils.js b/tests/wpt/tests/webnn/resources/utils.js
index 0e2687ec22b..955e01fb949 100644
--- a/tests/wpt/tests/webnn/resources/utils.js
+++ b/tests/wpt/tests/webnn/resources/utils.js
@@ -327,9 +327,11 @@ const PrecisionMetrics = {
   // End Element-wise unary operations
   elu: {ULP: {float32: 18, float16: 18}},
   expand: {ULP: {float32: 0, float16: 0}},
+  gather: {ULP: {float32: 0, float16: 0}},
   gemm: {ULP: {float32: getGemmPrecisionTolerance, float16: getGemmPrecisionTolerance}},
   hardSigmoid: {ULP: {float32: 2, float16: 2}},
   hardSwish: {ULP: {float32: 4, float16: 4}},
+  layerNormalization: {ATOL: {float32: 1/1024, float16: 1/512}},
   leakyRelu: {ULP: {float32: 1, float16: 1}},
   linear: {ULP: {float32: 2, float16: 2}},
   matmul: {ULP: {float32: getMatmulPrecisionTolerance, float16: getMatmulPrecisionTolerance}},
@@ -359,7 +361,6 @@ const PrecisionMetrics = {
   softplus: {ULP: {float32: 18, float16: 18}},
   softsign: {ULP: {float32: 3, float16: 3}},
   split: {ULP: {float32: 0, float16: 0}},
-  squeeze: {ULP: {float32: 0, float16: 0}},
   tanh: {ATOL: {float32: 1/1024, float16: 1/512}},
   transpose: {ULP: {float32: 0, float16: 0}},
   where: {ULP: {float32: 0, float16: 0}},
@@ -526,7 +527,13 @@ const createConstantOperand = (builder, resources) => {
 const createSingleInputOperand = (builder, resources, inputOperandName) => {
   inputOperandName = inputOperandName ? inputOperandName : Object.keys(resources.inputs)[0];
   const inputResources = resources.inputs[inputOperandName];
-  return builder.input(inputOperandName, {dataType: inputResources.type, type: inputResources.type, dimensions: inputResources.shape});
+  let operand;
+  if (resources.inputs[inputOperandName].hasOwnProperty('constant') && resources.inputs[inputOperandName]['constant']) {
+    operand = createConstantOperand(builder, resources.inputs[inputOperandName]);
+  } else {
+    operand = builder.input(inputOperandName, {dataType: inputResources.type, type: inputResources.type, dimensions: inputResources.shape});
+  }
+  return operand;
 };
 
 /**
@@ -539,12 +546,7 @@ const createMultiInputOperands = (builder, resources) => {
   let inputOperands = [];
   const inputOperandNameArray = Object.keys(resources.inputs);
   inputOperandNameArray.forEach(inputOperandName => {
-    let operand;
-    if (resources.inputs[inputOperandName].hasOwnProperty('constant') && resources.inputs[inputOperandName]['constant']) {
-      operand = createConstantOperand(builder, resources.inputs[inputOperandName]);
-    } else {
-      operand = createSingleInputOperand(builder, resources, inputOperandName);
-    }
+    const operand = createSingleInputOperand(builder, resources, inputOperandName);
     inputOperands.push(operand);
   });
   return inputOperands;
@@ -608,8 +610,14 @@ const buildConcat = (operationName, builder, resources) => {
   // MLOperand concat(sequence<MLOperand> inputs, unsigned long axis);
   const namedOutputOperand = {};
   const inputOperands = [];
+  let operand;
   for (let input of resources.inputs) {
-    inputOperands.push(builder.input(input.name, {dataType: input.type, type: input.type, dimensions: input.shape}));
+    if (input.hasOwnProperty('constant') && input['constant']) {
+      operand = createConstantOperand(builder, input);
+    } else {
+      operand = builder.input(input.name, {dataType: input.type, type: input.type, dimensions: input.shape});
+    }
+    inputOperands.push(operand);
   }
   // invoke builder.concat()
   namedOutputOperand[resources.expected.name] = builder[operationName](inputOperands, resources.axis);
@@ -664,6 +672,22 @@ const buildGemm = (operationName, builder, resources) => {
   return namedOutputOperand;
 };
 
+const buildLayerNorm = (operationName, builder, resources) => {
+  // MLOperand layerNormalization(MLOperand input, optional MLLayerNormalizationOptions options = {});
+  const namedOutputOperand = {};
+  const inputOperand = createSingleInputOperand(builder, resources);
+  const layerNormOptions = {...resources.options};
+  if (layerNormOptions.scale) {
+    layerNormOptions.scale = createConstantOperand(builder, layerNormOptions.scale);
+  }
+  if (layerNormOptions.bias) {
+    layerNormOptions.bias = createConstantOperand(builder, layerNormOptions.bias);
+  }
+  // invoke builder.layerNormalization()
+  namedOutputOperand[resources.expected.name] = builder[operationName](inputOperand, layerNormOptions);
+  return namedOutputOperand;
+};
+
 const buildPad = (operationName, builder, resources) => {
   // MLOperand pad(MLOperand input, sequence<unsigned long> beginningPadding, sequence<unsigned long> endingPadding, optional MLPadOptions options = {});
   const namedOutputOperand = {};
diff --git a/tests/wpt/tests/webrtc-encoded-transform/META.yml b/tests/wpt/tests/webrtc-encoded-transform/META.yml
index 6365c8d16af..8947732b6fb 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/META.yml
+++ b/tests/wpt/tests/webrtc-encoded-transform/META.yml
@@ -1 +1,6 @@
 spec: https://w3c.github.io/webrtc-encoded-transform/
+suggested_reviewers:
+  - alvestrand
+  - guidou
+  - youennf
+  - jan-ivar
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-clone.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-clone.https.html
similarity index 89%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-clone.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-clone.https.html
index 83cf642d77f..9f07713d443 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-clone.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-clone.https.html
@@ -5,9 +5,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-receive-cloned.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-receive-cloned.https.html
similarity index 90%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-receive-cloned.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-receive-cloned.https.html
index 66ce0bbcefb..3077632a3b4 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-receive-cloned.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-receive-cloned.https.html
@@ -5,9 +5,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-send-incoming.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-send-incoming.https.html
similarity index 91%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-send-incoming.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-send-incoming.https.html
index 1e2bbc95bd1..02f3b17e0c2 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-send-incoming.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-send-incoming.https.html
@@ -5,9 +5,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-serviceworker-failure.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-serviceworker-failure.https.html
similarity index 90%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-serviceworker-failure.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-serviceworker-failure.https.html
index d6d8578dbdf..b2f5f5e94c8 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedAudioFrame-serviceworker-failure.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-serviceworker-failure.https.html
@@ -6,9 +6,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-clone.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-clone.https.html
similarity index 90%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-clone.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-clone.https.html
index 0c51df25bbb..324c44f1934 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-clone.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-clone.https.html
@@ -5,9 +5,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-serviceworker-failure.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-serviceworker-failure.https.html
similarity index 91%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-serviceworker-failure.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-serviceworker-failure.https.html
index b95c673f41e..e725e5ce12c 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCEncodedVideoFrame-serviceworker-failure.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCEncodedVideoFrame-serviceworker-failure.https.html
@@ -6,9 +6,9 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
 
 <script>
 "use strict";
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-audio.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-audio.https.html
similarity index 98%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-audio.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-audio.https.html
index 23af1c2b636..83d284146a0 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-audio.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-audio.https.html
@@ -6,8 +6,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
 <script src="./RTCPeerConnection-insertable-streams.js"></script>
 </head>
 <body>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-errors.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-errors.https.html
similarity index 91%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-errors.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-errors.https.html
index d36df8227bf..a0c68c400a2 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-errors.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-errors.https.html
@@ -6,8 +6,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
 <script src="./RTCPeerConnection-insertable-streams.js"></script>
 </head>
 <body>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-simulcast.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-simulcast.https.html
similarity index 92%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-simulcast.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-simulcast.https.html
index cb33e458d18..834644674e8 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-simulcast.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-simulcast.https.html
@@ -5,10 +5,10 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
-<script src="../webrtc/third_party/sdp/sdp.js"></script>
-<script src="../webrtc/simulcast/simulcast.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
+<script src="../../webrtc/third_party/sdp/sdp.js"></script>
+<script src="../../webrtc/simulcast/simulcast.js"></script>
 <script>
 // Test based on wpt/webrtc/simulcast/basic.https.html
 promise_test(async t => {
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video-frames.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video-frames.https.html
similarity index 94%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video-frames.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video-frames.https.html
index d7fb0888468..d3db116ff60 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video-frames.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video-frames.https.html
@@ -6,8 +6,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
 <script src="./RTCPeerConnection-insertable-streams.js"></script>
 </head>
 <body>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video.https.html
similarity index 97%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video.https.html
index aa0ff474e97..5334b8d1f94 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-video.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-video.https.html
@@ -6,8 +6,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
 <script src="./RTCPeerConnection-insertable-streams.js"></script>
 </head>
 <body>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-worker.https.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-worker.https.html
similarity index 98%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-worker.https.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-worker.https.html
index cb31057cac9..94943f8b696 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams-worker.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-worker.https.html
@@ -6,8 +6,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src=/resources/testdriver.js></script>
 <script src=/resources/testdriver-vendor.js></script>
-<script src='../mediacapture-streams/permission-helper.js'></script>
-<script src="../webrtc/RTCPeerConnection-helper.js"></script>
+<script src='../../mediacapture-streams/permission-helper.js'></script>
+<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
 <script src="./RTCPeerConnection-insertable-streams.js"></script>
 </head>
 <body>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams.js b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams.js
similarity index 100%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-insertable-streams.js
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams.js
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-sender-worker-single-frame.js b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-sender-worker-single-frame.js
similarity index 100%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-sender-worker-single-frame.js
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-sender-worker-single-frame.js
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-worker-transform.js b/tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-worker-transform.js
similarity index 100%
rename from tests/wpt/tests/webrtc-encoded-transform/RTCPeerConnection-worker-transform.js
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/RTCPeerConnection-worker-transform.js
diff --git a/tests/wpt/tests/webrtc-encoded-transform/resources/blank.html b/tests/wpt/tests/webrtc-encoded-transform/tentative/resources/blank.html
similarity index 100%
rename from tests/wpt/tests/webrtc-encoded-transform/resources/blank.html
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/resources/blank.html
diff --git a/tests/wpt/tests/webrtc-encoded-transform/resources/serviceworker-failure.js b/tests/wpt/tests/webrtc-encoded-transform/tentative/resources/serviceworker-failure.js
similarity index 100%
rename from tests/wpt/tests/webrtc-encoded-transform/resources/serviceworker-failure.js
rename to tests/wpt/tests/webrtc-encoded-transform/tentative/resources/serviceworker-failure.js
diff --git a/tests/wpt/tests/webrtc/RTCRtpSender-setParameters-keyFrame.html b/tests/wpt/tests/webrtc/RTCRtpSender-setParameters-keyFrame.html
new file mode 100644
index 00000000000..c78dfa141c1
--- /dev/null
+++ b/tests/wpt/tests/webrtc/RTCRtpSender-setParameters-keyFrame.html
@@ -0,0 +1,94 @@
+<!doctype html>
+<meta charset=utf-8>
+<meta name="timeout" content="long">
+<title>RTCRtpSender.prototype.setParameters for generating keyFrames</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="RTCPeerConnection-helper.js"></script>
+<script>
+'use strict';
+
+// https://w3c.github.io/webrtc-extensions/#rtcrtpsender-setparameters-keyframe
+
+async function waitForKeyFrameCount(t, pc, spatialLayer, minimumKeyFrames) {
+  // return after 5 seconds.
+  const startTime = performance.now();
+  while (true) {
+    const report = await pc.getStats();
+    const stats = [...report.values()].find(({type, rid}) => type === 'outbound-rtp' && rid === spatialLayer);
+    if (stats && stats.keyFramesEncoded >= minimumKeyFrames) {
+      return stats;
+    }
+    await new Promise(r => t.step_timeout(r, 100));
+    if (performance.now() > startTime + 5000) {
+      break;
+    }
+  }
+}
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  // Video must be small enough to reach a key frame of the right size immediately.
+  const stream = await getNoiseStream({video: {width: 320, height: 160}});
+  t.add_cleanup(() => stream.getTracks().forEach(t => t.stop()));
+
+  const sender = pc1.addTrack(stream.getTracks()[0], stream);
+  exchangeIceCandidates(pc1, pc2);
+  await exchangeOfferAnswer(pc1, pc2);
+
+  const rid = undefined;
+  const first_stats = await waitForKeyFrameCount(t, pc1, rid, 1);
+  assert_true(!!first_stats);
+  sender.setParameters(sender.getParameters(), {
+    encodingOptions: [{keyFrame: true}],
+  });
+  const second_stats = await waitForKeyFrameCount(t, pc1, rid, first_stats.keyFramesEncoded + 1);
+  assert_true(!!second_stats);
+  assert_greater_than(second_stats.keyFramesEncoded, first_stats.keyFramesEncoded);
+}, `setParameters() second argument can be used to trigger keyFrame generation`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  // Video must be small enough to reach a key frame of the right size immediately.
+  const stream = await getNoiseStream({video: {width: 640, height: 360}});
+  t.add_cleanup(() => stream.getTracks().forEach(t => t.stop()));
+
+  const {sender} = pc1.addTransceiver(stream.getTracks()[0], {
+    streams: [stream],
+    sendEncodings: [{rid: 0}, {rid: 1}],
+  });
+  exchangeIceCandidates(pc1, pc2);
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription({type: 'answer', sdp: pc2.localDescription.sdp +
+    'a=rid:0 recv\r\n' +
+    'a=rid:1 recv\r\n' +
+    'a=simulcast:recv 0;1\r\n'
+  });
+
+  const first_stats_l0 = await waitForKeyFrameCount(t, pc1, "0", 1);
+  assert_true(!!first_stats_l0);
+  const first_stats_l1 = await waitForKeyFrameCount(t, pc1, "1", 1);
+  assert_true(!!first_stats_l1);
+
+  // Generate a keyframe on the second layer. This may, depending on the encoder, force
+  // a key frame on the first layer as well.
+  sender.setParameters(sender.getParameters(), {
+    encodingOptions: [{keyFrame: false}, {keyFrame: true}],
+  });
+  const second_stats_l1 = await waitForKeyFrameCount(t, pc1, "1", first_stats_l1.keyFramesEncoded + 1);
+  assert_true(!!second_stats_l1);
+  assert_greater_than(second_stats_l1.keyFramesEncoded, first_stats_l1.keyFramesEncoded);
+
+  const second_stats_l0 = await waitForKeyFrameCount(t, pc1, "0", first_stats_l0.keyFramesEncoded);
+  assert_true(!!second_stats_l0);
+  assert_greater_than_equal(second_stats_l0.keyFramesEncoded, first_stats_l0.keyFramesEncoded);
+}, `setParameters() second argument can be used to trigger keyFrame generation (simulcast)`);
+</script>
diff --git a/tests/wpt/tests/webrtc/legacy/munge-dont.html b/tests/wpt/tests/webrtc/legacy/munge-dont.html
new file mode 100644
index 00000000000..b5f0a4cb63b
--- /dev/null
+++ b/tests/wpt/tests/webrtc/legacy/munge-dont.html
@@ -0,0 +1,88 @@
+<!doctype html>
+<meta charset=utf-8>
+<meta name="timeout" content="long">
+<title>SDP munging is a bad idea</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+'use strict';
+
+const sdp = `v=0
+o=- 0 3 IN IP4 127.0.0.1
+s=-
+t=0 0
+m=video 9 UDP/TLS/RTP/SAVPF 100
+c=IN IP4 0.0.0.0
+a=rtcp-mux
+a=sendonly
+a=mid:video
+a=rtpmap:100 VP8/90000
+a=fmtp:100 max-fr=30;max-fs=3600
+a=fingerprint:sha-256 A7:24:72:CA:6E:02:55:39:BA:66:DF:6E:CC:4C:D8:B0:1A:BF:1A:56:65:7D:F4:03:AD:7E:77:43:2A:29:EC:93
+a=ice-ufrag:ETEn
+a=ice-pwd:OtSK0WpNtpUjkY4+86js7Z/l
+`;
+const candidateString = 'candidate:1905690388 1 udp 2113937151 192.168.0.1 58041 typ host generation 0 ufrag thC8';
+
+// See https://bugs.chromium.org/p/chromium/issues/detail?id=662898
+// and https://bugs.chromium.org/p/chromium/issues/detail?id=823036
+// for why neither of these is feasible to enforce.
+
+// Note that this does not restrict creating a
+// new RTCSessionDescription with a modified copy.
+test(() => {
+  const desc = new RTCSessionDescription({
+    type: 'offer',
+    sdp,
+  });
+  assert_throws_js(TypeError, () => {
+    desc.type = 'answer';
+  });
+}, 'RTCSessionDescription.type is read-only');
+
+test(() => {
+  const desc = new RTCSessionDescription({
+    type: 'offer',
+    sdp,
+  });
+  assert_throws_js(TypeError, () => {
+    desc.sdp += 'a=dont-modify-me\r\n';
+  });
+}, 'RTCSessionDescription.sdp is read-only');
+
+test(() => {
+  const candidate = new RTCIceCandidate({
+    sdpMid: '0',
+    candidate: candidateString,
+  });
+  assert_throws_js(TypeError, () => {
+    candidate.candidate += ' myattribute value';
+  });
+}, 'RTCIceCandidate.candidate is read-only');
+
+// https://w3c.github.io/webrtc-pc/#dom-peerconnection-setlocaldescription
+// If type is "offer", and sdp is not the empty string and not equal to
+// connection.[[LastCreatedOffer]], then return a promise rejected with a
+// newly created InvalidModificationError and abort these steps.
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+  pc.addTransceiver('audio');
+  const offer = await pc.createOffer();
+  return promise_rejects_dom(t, 'InvalidModificationError',
+      pc.setLocalDescription({type: 'offer', sdp: offer.sdp + 'a=munging-is-not-good\r\n'}));
+}, 'Rejects SDP munging between createOffer and setLocalDescription');
+
+// If type is "answer" or "pranswer", and sdp is not the empty string and not equal to
+// connection.[[LastCreatedAnswer]], then return a promise rejected with a
+// newly created InvalidModificationError and abort these steps.
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+  await pc.setRemoteDescription({type: 'offer', sdp});
+
+  const answer = await pc.createAnswer();
+  return promise_rejects_dom(t, 'InvalidModificationError',
+      pc.setLocalDescription({type: 'answer', sdp: answer.sdp + 'a=munging-is-not-good\r\n'}));
+}, 'Rejects SDP munging between createAnswer and setLocalDescription');
+</script>
diff --git a/tests/wpt/tests/webrtc/protocol/sdes-dont-dont-dont.html b/tests/wpt/tests/webrtc/protocol/sdes-dont-dont-dont.html
index e938c84c8bf..dcf7ad1b546 100644
--- a/tests/wpt/tests/webrtc/protocol/sdes-dont-dont-dont.html
+++ b/tests/wpt/tests/webrtc/protocol/sdes-dont-dont-dont.html
@@ -37,19 +37,13 @@ promise_test(async t => {
   pc.addTransceiver('audio');
   const offer = await pc.createOffer();
   assert_false(offer.sdp.includes('\na=crypto:'));
-}, 'does not create offers with SDES');
+}, 'Does not create offers with SDES');
 
-promise_test(async t => {
+promise_test(t => {
   const pc = new RTCPeerConnection();
   t.add_cleanup(() => pc.close());
 
-  try {
-    await pc.setRemoteDescription({type: 'offer', sdp});
-    assert_unreached("Must not accept SDP without fingerprint");
-  } catch (e) {
-    // TODO: which error is correct? See
-    // https://github.com/w3c/webrtc-pc/issues/2672
-    assert_true(['OperationError', 'InvalidAccessError'].includes(e.name));
-  }
+  return promise_rejects_dom(t, 'InvalidAccessError',
+      pc.setRemoteDescription({type: 'offer', sdp}));
 }, 'rejects a remote offer that only includes SDES and no DTLS fingerprint');
 </script>