script: Prepare to run script and callback before invoking CE constructor by simonwuelker · Pull Request #39013 · servo/servo

simonwuelker · 2025-08-29T07:35:19Z

Additionally, this change adjusts the step numbers around the code because they were outdated.

Testing: ???
Fixes #39004
Probably fixes #32977

github-actions · 2025-08-29T07:37:48Z

🔨 Triggering try run (#17317787942) for Linux (WPT)

github-actions · 2025-08-29T08:02:37Z

Test results for linux-wpt from try job (#17317787942):

Flaky unexpected result (14)

OK /FileAPI/url/url-with-fetch.any.worker.html (#21517)
- FAIL [expected PASS] subtest: Revoke blob URL after calling fetch, fetch should succeed
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
CRASH [expected TIMEOUT] /IndexedDB/crashtests/create-index.any.html
OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
CRASH [expected OK] /IndexedDB/nested-cloning-basic.any.worker.html (#38842)
OK /css/css-cascade/layer-font-face-override.html (#35935)
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 1
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 2
TIMEOUT [expected OK] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- TIMEOUT [expected PASS] subtest: [keepalive][iframe][load] mixed content redirect; setting up
```
Test timed out
```

OK

/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html

(#29048)

FAIL [expected PASS] subtest: Navigating to a different document with form submission

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1=" but got "about:blank"

PASS [expected FAIL] /html/canvas/element/manual/text/canvas.2d.disconnected.html (#30063)
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html (#22667)
- FAIL [expected TIMEOUT] subtest: Check that popups from a sandboxed iframe escape the sandbox if allow-popups-to-escape-sandbox is used
```
assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"
```
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html (#22154)
OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
- PASS [expected FAIL] subtest: multipart/form-data: Basic test (normal form)
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- PASS [expected FAIL] subtest: application/x-www-form-urlencoded: Basic test (normal form)
OK [expected TIMEOUT] /webmessaging/with-ports/018.html (#24485)
- PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, javascript:
OK [expected ERROR] /workers/constructors/Worker/Worker-constructor.html (#22991)

Stable unexpected results that are known to be intermittent (30)

FAIL [expected PASS] /_mozilla/css/iframe/hide_and_show.html (#15265)
FAIL [expected PASS] /_mozilla/css/stacked_layers.html (#15988)
FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /css/compositing/canvas-composite-modes.html (#37283)
- PASS [expected FAIL] subtest: globalCompositeOperation source-out
- PASS [expected FAIL] subtest: globalCompositeOperation destination-out
- FAIL [expected PASS] subtest: globalCompositeOperation source-atop
```
assert_approx_equals: green: g=47 a=47 source-atop g=47 a=47 expected 46.11702127659574 +/- 6.212765957446809 but got 53
```
- FAIL [expected PASS] subtest: globalCompositeOperation destination-atop
```
assert_approx_equals: green: g=47 a=47 destination-atop g=47 a=47 expected 46.11702127659574 +/- 6.212765957446809 but got 53
```
PASS [expected FAIL] /css/css-fonts/downloadable-font-scoped-to-document.html (#38691)
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-monospace (drawing text in a canvas)
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Cross-site
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- PASS [expected FAIL] subtest: Link with onclick navigation and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- FAIL [expected PASS] subtest: Check execution order from nested timeout
```
assert_equals: Expected nested setTimeout to run second expected true but got false
```
- FAIL [expected PASS] subtest: Check execution order on load handler
```
assert_equals: Expected onload to run first expected false but got true
```
OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
- FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')
```
assert_unreached: load should not be fired Reached unreachable code
```
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted
```
assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])
```
OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)
- PASS [expected FAIL] subtest: opener of discarded auxiliary browsing context
TIMEOUT [expected OK] /html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.html (#30970)
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- FAIL [expected TIMEOUT] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
assert_not_equals: got disallowed value Element node &lt;body&gt;&lt;/body&gt;
```
TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- TIMEOUT [expected FAIL] subtest: Element with tabindex should support autofocus
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Non-HTMLElement should not support autofocus
OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html (#22647)
- FAIL [expected TIMEOUT] subtest: Check that popups from a sandboxed iframe escape the sandbox if allow-popups-to-escape-sandbox is used
```
assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"
```
OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730)
OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)
- PASS [expected FAIL] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler

TIMEOUT /html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-exception-vs-return-origin.sub.window.html (#21642)

FAIL [expected PASS] subtest:

document.open should throw an InvalidStateError when the throw-on-dynamic-markup-insertion counter is incremented even if the document is cross-origin

assert_throws_dom: opening a document when the throw-on-dynamic-markup-insertion counter is incremented should throw an InvalidStateError function "() =&gt; {
          iframe.contentDocument.open();
        }" threw object "SecurityError: The operation is insecure." that is not a DOMException InvalidStateError: property "code" is equal to 18, expected 11

OK /preload/preload-error.sub.html (#37177)

FAIL [expected PASS] subtest: 404 (style): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.css?pipe=status%28404%29&amp;label=style should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: CORS (style): main
PASS [expected FAIL] subtest: 404 (script): main

FAIL [expected PASS] subtest: CORS (script): main

assert_greater_than: http://not-web-platform.test:8000/preload/resources/dummy.js?pipe=header%28Access-Control-Allow-Origin%2C*%29&amp;label=script should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: success (xhr): main

FAIL [expected PASS] subtest: 404 (xhr): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?pipe=status%28404%29&amp;label=xhr should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: Decode-error (script): main

FAIL [expected PASS] subtest: MIME-error (script): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.css?pipe=header%28Content-Type%2Ctext%2Fnotjavascript%29&amp;label=script should be loaded expected a number greater than 0 but got 0

OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in enforcing mode.
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
TIMEOUT [expected CRASH] /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in enforcing mode.
- TIMEOUT [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
- NOTRUN [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in report-only mode.
OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in enforcing mode.
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.
TIMEOUT [expected CRASH] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.
OK [expected TIMEOUT] /webmessaging/without-ports/017.html (#24486)
- PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, about:blank
ERROR [expected OK] /webxr/render_state_update.https.html (#27535)

Stable unexpected results (3)

OK /custom-elements/microtasks-and-constructors.html
- FAIL [expected PASS] subtest: Microtasks evaluate immediately when the stack is empty inside the parser, causing the checks on no attributes to fail
```
assert_false: The attribute must not be present expected false got true
```
OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml

github-actions · 2025-08-29T08:02:46Z

⚠️ Try run (#17317787942) failed.

github-actions · 2025-08-29T11:39:20Z

🔨 Triggering try run (#17322804508) for Linux (WPT)

github-actions · 2025-08-29T12:02:02Z

Test results for linux-wpt from try job (#17322804508):

Flaky unexpected result (18)

CRASH [expected TIMEOUT] /IndexedDB/crashtests/create-index.any.html
OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
OK [expected ERROR] /_webgl/conformance/textures/misc/origin-clean-conformance-offscreencanvas.html
- PASS [expected NOTRUN] subtest: Overall test
- FAIL [expected PASS] subtest: WebGL test #0
```
assert_true: Image setup failed (timeout). expected true got false
```
OK /css/css-cascade/layer-cssom-order-reverse.html (#36094)
- PASS [expected FAIL] subtest: Delete layer invalidates @font-face
OK /css/css-cascade/layer-font-face-override.html (#35935)
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 1
- PASS [expected FAIL] subtest: @font-face override update with appended sheet 2
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-origin destination
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
OK /fetch/private-network-access/worker-blob-fetch.tentative.window.html (#30064)
- PASS [expected FAIL] subtest: local to local: success.
OK /html/browsers/browsing-the-web/navigating-across-documents/009.html (#24456)
- PASS [expected FAIL] subtest: Link with onclick form submit to javascript url with document.write and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- FAIL [expected PASS] subtest: Check execution order from nested timeout
```
assert_equals: Expected nested setTimeout to run second expected true but got false
```
- FAIL [expected PASS] subtest: Check execution order on load handler
```
assert_equals: Expected onload to run first expected false but got true
```
OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
PASS [expected FAIL] /html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected-font-size-math.html (#30063)
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- FAIL [expected TIMEOUT] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
assert_not_equals: got disallowed value null
```
TIMEOUT [expected OK] /html/semantics/forms/form-submission-0/reparent-form-during-planned-navigation-task.html (#29724)
- TIMEOUT [expected PASS] subtest: reparent-form-during-planned-navigation-task
```
Test timed out
```
OK /html/semantics/forms/historical.html (#28568)
- PASS [expected FAIL] subtest: <input name=isindex> should not be supported
OK /html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.worker.html (#33909)
- FAIL [expected PASS] subtest: Revoking a blob URL immediately after calling import will not fail
```
promise_test: Unhandled rejection with value: object "TypeError: Dynamic import failed"
```
TIMEOUT /resource-timing/test_resource_timing.html (#25720)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
FAIL [expected PASS] /shadow-dom/shadow-style-invalidation-vw-units.html (#38468)

Stable unexpected results that are known to be intermittent (26)

FAIL [expected PASS] /_mozilla/css/stacked_layers.html (#15988)
FAIL [expected PASS] /_mozilla/gfx-rs-gecko/descriptor-ranges.html (#23258)
FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /content-security-policy/frame-ancestors/frame-ancestors-path-ignored.window.html (#36468)
- FAIL [expected PASS] subtest: A 'frame-ancestors' CSP directive with a URL that includes a path should be ignored.
```
assert_unreached: The IFrame should have been blocked (or cross-origin). It wasn't. Reached unreachable code
```
OK /css/compositing/canvas-composite-modes.html (#37283)
- PASS [expected FAIL] subtest: globalCompositeOperation source-out
- PASS [expected FAIL] subtest: globalCompositeOperation destination-out
- FAIL [expected PASS] subtest: globalCompositeOperation source-atop
```
assert_approx_equals: green: g=47 a=47 source-atop g=47 a=47 expected 46.11702127659574 +/- 6.212765957446809 but got 53
```
- FAIL [expected PASS] subtest: globalCompositeOperation destination-atop
```
assert_approx_equals: green: g=47 a=47 destination-atop g=47 a=47 expected 46.11702127659574 +/- 6.212765957446809 but got 53
```
PASS [expected FAIL] /css/css-fonts/downloadable-font-scoped-to-document.html (#38691)
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)

OK

/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html

(#29048)

FAIL [expected PASS] subtest: Navigating to a different document with location.href

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1" but got "about:blank"

FAIL [expected PASS] subtest: Navigating to a different document with location.assign

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1" but got "about:blank"

FAIL [expected PASS] subtest: Navigating to a different document with form submission

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1=" but got "about:blank"

OK /html/browsers/browsing-the-web/navigating-across-documents/refresh/same-document-refresh.html (#34597)
- PASS [expected FAIL] subtest: Same-Document Referrer from Refresh

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)

FAIL [expected PASS] subtest: Non-HTMLElement should not support autofocus

promise_test: Unhandled rejection with value: object "TypeError: can't access property "tagName", w.document.activeElement is null"

FAIL [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus

assert_equals: expected Element node &lt;div autofocus=""&gt;&lt;/div&gt; but got Element node &lt;body&gt;&lt;div autofocus=""&gt;&lt;/div&gt;&lt;/body&gt;

FAIL [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped

assert_equals: expected Element node &lt;input autofocus=""&gt;&lt;/input&gt; but got Element node &lt;body&gt;&lt;/body&gt;

FAIL [expected NOTRUN] subtest: Area element should support autofocus

assert_equals: expected Element node &lt;area autofocus="" href="/common/blank.html"&gt;&lt;/area&gt; but got Element node &lt;body&gt;
&lt;img src="/media/poster.png" usemap="#map"&gt;
&lt;map n...

OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html (#32595)

FAIL [expected PASS] subtest: Reloading iframe loading='lazy' before it is loaded: location.reload

uncaught exception: Error: assert_equals: expected "http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/support/blank.htm?src" but got "about:blank"

OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html (#22647)
- FAIL [expected TIMEOUT] subtest: Check that popups from a sandboxed iframe escape the sandbox if allow-popups-to-escape-sandbox is used
```
assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"
```
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html (#22667)
- FAIL [expected TIMEOUT] subtest: Check that popups from a sandboxed iframe escape the sandbox if allow-popups-to-escape-sandbox is used
```
assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"
```
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html (#24066)
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html (#22154)
CRASH [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```

OK /preload/preload-error.sub.html (#37177)

PASS [expected FAIL] subtest: 404 (script): main

FAIL [expected PASS] subtest: CORS (script): main

assert_greater_than: http://not-web-platform.test:8000/preload/resources/dummy.js?pipe=header%28Access-Control-Allow-Origin%2C*%29&amp;label=script should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: Decode-error (script): main

OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
TIMEOUT [expected CRASH] /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in enforcing mode.
- TIMEOUT [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
```
Test timed out
```
- NOTRUN [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
- NOTRUN [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls w/ a default policy throwing an exception in report-only mode.
OK /trusted-types/trusted-types-navigation.html?21-25 (#38997)
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls in enforcing mode.
OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in enforcing mode.
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.
TIMEOUT [expected CRASH] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
ERROR [expected OK] /webxr/render_state_update.https.html (#27535)

Stable unexpected results (3)

OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
OK /fetch/api/response/response-body-read-task-handling.html
- FAIL [expected PASS] subtest: reading from a body stream should occur in a microtask scope
```
assert_false: shouldn't have run microtasks yet expected false got true
```

github-actions · 2025-08-29T12:02:09Z

⚠️ Try run (#17322804508) failed.

Signed-off-by: Simon Wülker <[email protected]>

github-actions · 2025-10-20T13:23:10Z

🔨 Triggering try run (#18653423428) for Linux (WPT)

github-actions · 2025-10-20T13:47:04Z

Test results for linux-wpt from try job (#18653423428):

Flaky unexpected result (19)

TIMEOUT /FileAPI/url/url-in-tags-revoke.window.html (#19978)
- TIMEOUT [expected PASS] subtest: Fetching a blob URL immediately before revoking it works in <script> tags.
```
Test timed out
```
OK /FileAPI/url/url-with-fetch.any.worker.html (#21517)
- FAIL [expected PASS] subtest: Revoke blob URL after calling fetch, fetch should succeed
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
OK /content-security-policy/frame-ancestors/frame-ancestors-path-ignored.window.html (#36468)
- PASS [expected FAIL] subtest: A 'frame-ancestors' CSP directive with a URL that includes a path should be ignored.
OK /css/css-animations/event-order.tentative.html (#39000)
- PASS [expected FAIL] subtest: Same events on pseudo-elements follow the prescribed order
OK /css/css-cascade/layer-cssom-order-reverse.html (#36094)
- FAIL [expected PASS] subtest: Insert layer invalidates @font-face
```
assert_equals: expected "220px" but got "122.8px"
```
- FAIL [expected PASS] subtest: Delete layer invalidates @font-face
```
assert_equals: expected "220px" but got "122.8px"
```
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - name is missing
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- PASS [expected FAIL] subtest: Link with onclick navigation and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/009.html (#24456)
- PASS [expected FAIL] subtest: Link with onclick form submit to javascript url with document.write and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
- PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored
OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
- PASS [expected FAIL] subtest: aElement.click() before the load event must NOT replace
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm (#37173)
- FAIL [expected PASS] subtest: default object size after src is removed
```
assert_equals: expected "300px" but got "320px"
```
OK /html/semantics/forms/historical.html (#28568)
- PASS [expected FAIL] subtest: <input name=isindex> should not be supported
OK /preload/link-header-preload-delay-onload.html (#39622)
- FAIL [expected PASS] subtest: Makes sure that Link headers preload resources and block window.onload after resource discovery
```
assert_true: expected true got false
```
OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
OK /wasm/webapi/abort.any.html (#39966)
- FAIL [expected PASS] subtest: instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError
```
assert_equals: expected "AbortError" but got "CompileError"
```
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
OK /workers/dedicated-worker-from-blob-url.window.html (#22286)
- PASS [expected FAIL] subtest: Creating a dedicated worker from a blob URL works immediately before revoking.

Stable unexpected results that are known to be intermittent (25)

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.worker.html (#39277)

FAIL [expected PASS] subtest: IDBCursor continuePrimaryKey() on object store cursor

assert_throws_dom: continuePrimaryKey() should throw if source is not an index function "function() {
        cursor.continuePrimaryKey(2, 2);
      }" threw object "TypeError: cursor.continuePrimaryKey is not a function" that is not a DOMException InvalidAccessError: property "code" is equal to undefined, expected 15

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()

OK /IndexedDB/key-conversion-exceptions.any.html (#39305)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

OK /IndexedDB/key-conversion-exceptions.any.worker.html (#39284)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /css/css-cascade/layer-font-face-override.html (#35935)
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "38.3166666666667px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "38.3166666666667px"
```
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-dest
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
- FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /html/browsers/browsing-the-web/navigating-across-documents/008.html (#24456)
- PASS [expected FAIL] subtest: Link with onclick form submit to javascript url and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- PASS [expected FAIL] subtest: Check execution order on load handler
- PASS [expected FAIL] subtest: Check execution order from nested timeout
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- FAIL [expected PASS] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
```
assert_equals: expected "" but got "#fragment"
```

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

FAIL [expected PASS] /html/canvas/element/manual/text/canvas.2d.disconnected.html (#30063)
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- FAIL [expected TIMEOUT] subtest: Element with tabindex should support autofocus
```
assert_equals: expected "SPAN" but got "BODY"
```
- PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
- FAIL [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus
```
assert_equals: expected Element node &lt;div autofocus=""&gt;&lt;/div&gt; but got Element node &lt;body&gt;&lt;div autofocus=""&gt;&lt;/div&gt;&lt;/body&gt;
```
- FAIL [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
```
assert_equals: expected Element node &lt;input autofocus=""&gt;&lt;/input&gt; but got Element node &lt;body&gt;&lt;/body&gt;
```
- FAIL [expected NOTRUN] subtest: Area element should support autofocus
```
promise_test: Unhandled rejection with value: object "TypeError: can't access property "appendChild", w.document.querySelector(...) is null"
```
TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- PASS [expected FAIL] subtest: text/plain: Basic test (normal form)
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic test (normal form)
```
assert_equals: expected "basic=test" but got ""
```
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
```
assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
```
assert_true: Reload domContentLoadedEventStart &gt; Original domContentLoadedEventStart expected true got false
```
- FAIL [expected PASS] subtest: Reload fetchStart > Original fetchStart
```
assert_true: Reload fetchStart &gt; Original fetchStart expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```

TIMEOUT [expected OK] /preload/preload-error.sub.html (#37177)

FAIL [expected PASS] subtest: 404 (fetch): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?pipe=status%28404%29&amp;label=fetch should be loaded expected a number greater than 0 but got 0

OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- FAIL [expected PASS] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```

Stable unexpected results (3)

OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
OK [expected CRASH] /custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
OK /fetch/api/response/response-body-read-task-handling.html
- FAIL [expected PASS] subtest: reading from a body stream should occur in a microtask scope
```
assert_false: shouldn't have run microtasks yet expected false got true
```

github-actions · 2025-10-20T13:47:14Z

⚠️ Try run (#18653423428) failed.

mrobinson

Looks reasonable to me. r+ with the test expectations updated.

Signed-off-by: Simon Wülker <[email protected]>

simonwuelker mentioned this pull request Aug 29, 2025

called Option::unwrap() on a None value (thread Script(1,1), at components/script/dom/bindings/settings_stack.rs:46) #39004

Closed

simonwuelker added the T-linux-wpt Do a try run of the WPT label Aug 29, 2025

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Aug 29, 2025

simonwuelker changed the title ~~Prepare to run script/callback before calling CE constructor~~ script: Prepare to run script and callback before calling CE constructor Aug 29, 2025

simonwuelker changed the title ~~script: Prepare to run script and callback before calling CE constructor~~ script: Prepare to run script and callback before invoking CE constructor Aug 29, 2025

simonwuelker force-pushed the compare-for-ce-constructor branch from 1655ae5 to 5d64d10 Compare August 29, 2025 08:19

simonwuelker added the T-linux-wpt Do a try run of the WPT label Aug 29, 2025

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Aug 29, 2025

simonwuelker mentioned this pull request Aug 29, 2025

AutoScriptEntry::drop occasionally misses microtask checkpoints #39029

Open

simonwuelker added 2 commits October 20, 2025 15:22

Prepare to run script/callback before running CE constructor

bc0dfd8

Signed-off-by: Simon Wülker <[email protected]>

Experiment with spec-compliant script cleanup steps

03fc173

Signed-off-by: Simon Wülker <[email protected]>

simonwuelker force-pushed the compare-for-ce-constructor branch from 9f83fa4 to 03fc173 Compare October 20, 2025 13:22

simonwuelker added the T-linux-wpt Do a try run of the WPT label Oct 20, 2025

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Oct 20, 2025

mrobinson approved these changes Oct 22, 2025

View reviewed changes

Update WPT expectations

0e90fee

Signed-off-by: Simon Wülker <[email protected]>

simonwuelker marked this pull request as ready for review October 23, 2025 02:26

simonwuelker requested a review from gterzian as a code owner October 23, 2025 02:26

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Oct 23, 2025

simonwuelker enabled auto-merge October 23, 2025 02:26

simonwuelker added this pull request to the merge queue Oct 23, 2025

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Oct 23, 2025

Merged via the queue into servo:main with commit 785e7e5 Oct 23, 2025
33 checks passed

simonwuelker deleted the compare-for-ce-constructor branch October 23, 2025 04:54

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Oct 23, 2025

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

script: Prepare to run script and callback before invoking CE constructor#39013

script: Prepare to run script and callback before invoking CE constructor#39013
simonwuelker merged 3 commits intoservo:mainfrom
simonwuelker:compare-for-ce-constructor

simonwuelker commented Aug 29, 2025 •

edited

Loading

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

mrobinson left a comment

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Uh oh!

Conversation

simonwuelker commented Aug 29, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Aug 29, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

github-actions bot commented Oct 20, 2025

Uh oh!

mrobinson left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

simonwuelker commented Aug 29, 2025 •

edited

Loading