fonts: Create resource timing entries when loading web fonts (#41660) by lumi-me-not · Pull Request #41784 · servo/servo

lumi-me-not · 2026-01-08T21:38:39Z

Add a callback on WebFontDocumentContext to create resource timing entries, this callback is then used to call submit_timing, using a shim listener, as this function requires a listener.

Testing: Using ./mach test-wpt tests/wpt/tests/preload/preload-resource-match.https.html
Fixes: #41660

…1660) Add a callback on `WebFontDocumentContext` to create resource timing entries, this callback is then used to call `submit_timing`, using a shim listener, as this function requires a listener. Fixes servo#41660 Signed-off-by: lumi <[email protected]>

jdm · 2026-01-08T21:44:33Z

Oh, I understand what you mean about FetchResponseListener now! What happens if you remove that requirement from the generic type for submit_timing?

lumi-me-not · 2026-01-08T22:11:05Z

Oh, I understand what you mean about FetchResponseListener now! What happens if you remove that requirement from the generic type for submit_timing?

Looks like the FetchResponseListener bound is not strictly necessary as the only methods used come from ResourceTimingListener. The code compiles without this bound.

I changed the initiator type to InitiatorType::Other as a last minute change to be more in line with the CSP code and I noticed it broke tests again. Which initiator type should be used here?

jdm · 2026-01-08T23:38:37Z

I haven't yet found the actual spec text for this, but I assume it expects a "css" initiator type. You can add that to https://doc.servo.org/script/dom/performance/performanceresourcetiming/enum.InitiatorType.html based on https://fetch.spec.whatwg.org/#request-initiator-type

jdm · 2026-01-08T23:40:36Z

https://drafts.csswg.org/css-fonts-4/#font-fetching-requirements is where I would expect to find it, but it's not there.

lumi-me-not · 2026-01-09T00:11:36Z

Looking around a bit, https://www.w3.org/TR/resource-timing/#dom-performanceresourcetiming-initiatortype specifically says that it should be "css" for @font-face.

I've added "css" to the InitiatorType enum and removed the unnecessary FetchResponseListener bound.

Should I squash these commits?

jdm · 2026-01-09T00:45:59Z

Looking around a bit, https://www.w3.org/TR/resource-timing/#dom-performanceresourcetiming-initiatortype specifically says that it should be "css" for @font-face.

Good find! Also, this is a really bizarre way for that behaviour to be specified. One more thing about the performance/resource timing specifications to add to my list of grumbles.

Should I squash these commits?

It will be squashed automatically when merging. I don't mind reviewing individual commits like how they're currently structured!

Signed-off-by: lumi <[email protected]>

…tchListener` Signed-off-by: lumi <[email protected]>

github-actions · 2026-01-09T01:01:50Z

🔨 Triggering try run (#20837499413) for Linux (WPT)

jdm · 2026-01-09T01:02:01Z

The changes look great! Let's see what the tests say now.

github-actions · 2026-01-09T01:33:23Z

Test results for linux-wpt from try job (#20837499413):

Flaky unexpected result (42)

OK /FileAPI/file/send-file-form-utf-8.html

FAIL [expected PASS] subtest: Upload file-for-upload-in-form-.txt (x-user-defined) in UTF-8 form

assert_greater_than: file-for-upload-in-form-.txt: multipart form data must have at least 3 lines: "" expected a number greater than 2 but got 0

OK /_mozilla/css/offset_properties_inline.html (#40543)

FAIL [expected PASS] subtest: offsetTop

assert_equals: offsetTop of #inline-1 should be 0. expected 0 but got -1

FAIL [expected PASS] subtest: offsetLeft

assert_equals: offsetLeft of #inline-2 should be 40. expected 40 but got 25

OK /_mozilla/mozilla/getBoundingClientRect.html (#39668)
- FAIL [expected PASS] subtest: getBoundingClientRect 1
```
assert_equals: expected 62 but got 60.35
```
CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
OK /_mozilla/webxr/create_session.https.html
- FAIL [expected PASS] subtest: create_session
```
can't access property "simulateDeviceConnection", navigator.xr.test is undefined
```

OK /_mozilla/webxr/obtain_frame.https.html

FAIL [expected PASS] subtest: obtain_frame

promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"

ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html

OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)

FAIL [expected PASS] subtest: WebGL test #77

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #79

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

FAIL [expected PASS] subtest: WebGL test #81

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #83

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

PASS [expected FAIL] subtest: WebGL test #85
PASS [expected FAIL] subtest: WebGL test #87
PASS [expected FAIL] subtest: WebGL test #89
PASS [expected FAIL] subtest: WebGL test #91

FAIL [expected PASS] subtest: WebGL test #93

assert_true: Texture was smaller than the expected size 2x2 expected true got false

FAIL [expected PASS] subtest: WebGL test #95

assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false

And 2 more unexpected results...

CRASH [expected ERROR] /_webgl/conformance2/textures/misc/tex-input-validation.html (#38890)
TIMEOUT [expected PASS] /css/CSS2/positioning/right-113.xht
FAIL [expected PASS] /css/css-backgrounds/background-size-042.html
OK /css/css-fonts/generic-family-keywords-001.html (#37467)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(kai)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(nastaliq)
OK /css/css-fonts/generic-family-keywords-002.html (#40929)
- FAIL [expected PASS] subtest: font-family: -webkit-serif treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-sans-serif treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-cursive treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-fantasy treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-monospace treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-system-ui treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-math treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- PASS [expected FAIL] subtest: font-family: -webkit-generic(fangsong) treated as <font-family>, not <generic-name>
- PASS [expected FAIL] subtest: font-family: -webkit-generic(kai) treated as <font-family>, not <generic-name>
- PASS [expected FAIL] subtest: font-family: -webkit-generic(khmer-mul) treated as <font-family>, not <generic-name>
- And 12 more unexpected results...
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Null value should submit nothing
- PASS [expected FAIL] subtest: setFormValue with an empty FormData should submit nothing
- PASS [expected FAIL] subtest: Newline normalization - \r\n in value (formdata)
OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/sandboxed-iframe.https.window.html (#41704)

OK /html/browsers/browsing-the-web/navigating-across-documents/refresh/same-document-refresh.html (#34597)

FAIL [expected PASS] subtest: Same-Document Referrer from Refresh

assert_equals: original page loads expected "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section#section"

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
CRASH [expected OK] /html/browsers/browsing-the-web/unloading-documents/unload/002.html
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
Test timed out
```
TIMEOUT [expected OK] /html/semantics/embedded-content/media-elements/audio_loop_base.html (#41122)
- NOTRUN [expected PASS] subtest: Check if audio.loop is set to true that expecting the seeking event is fired more than once
TIMEOUT /html/semantics/embedded-content/media-elements/autoplay-default-feature-policy.https.sub.html (#41193)
- PASS [expected TIMEOUT] subtest: Default "autoplay" feature policy ["self"] allows same-origin iframes.
TIMEOUT /html/semantics/embedded-content/media-elements/autoplay-disabled-by-feature-policy.https.sub.html (#41221)
- FAIL [expected TIMEOUT] subtest: Feature-Policy header: autoplay "none" disallows same-origin iframes.
```
assert_false: autoplay expected false got true
```

OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-nav-form-submit.html (#32607)

FAIL [expected PASS] subtest: Navigating iframe loading='lazy' before it is loaded: form submit

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

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/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- FAIL [expected PASS] subtest: text/plain: Basic File test (normal form)
```
assert_equals: expected "basic=file-test.txt\r\n" but got ""
```
- PASS [expected FAIL] subtest: text/plain: 0x00 in value (formdata event)
- PASS [expected FAIL] subtest: text/plain: single quote in name (normal form)
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic File test (normal form)
```
assert_equals: expected "basic=file-test.txt" but got ""
```
- PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in value (formdata event)
- PASS [expected FAIL] subtest: application/x-www-form-urlencoded: single quote in filename (normal form)
OK [expected ERROR] /html/user-activation/no-activation-thru-escape-key.html (#40343)
OK /html/webappapis/user-prompts/print-during-unload.html (#35944)
- PASS [expected FAIL] subtest: print() during unload
CRASH [expected OK] /intersection-observer/observer-attributes.html
FAIL [expected PASS] /png/apng/fcTL-dispose-background-final.html (#41581)
OK /resource-timing/buffer-full-add-then-clear.html (#40819)
- PASS [expected FAIL] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
OK /service-workers/service-worker/fetch-event.https.html (#36234)
- PASS [expected FAIL] subtest: Service Worker falls back to network in fetch event with POST form
CRASH [expected OK] /trusted-types/should-trusted-type-policy-creation-be-blocked-by-csp-001.html
TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- TIMEOUT [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
TIMEOUT /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- TIMEOUT [expected PASS] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected TIMEOUT] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
CRASH [expected OK] /webaudio/the-audio-api/the-audiobuffersourcenode-interface/ctor-audiobuffersource.html

OK /webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html (#22849)

FAIL [expected PASS] subtest: buffer-stitching-2

assert_approx_equals: Stitched sine‑wave buffers at sample rate 43800 sample[24044] |5.93719358751724e-15 - -0.6139758825302124| = 0.6139758825302183 &gt; 0.0038986 expected -0.6139758825302124 +/- 0.0038986 but got 5.93719358751724e-15

CRASH [expected OK] /webaudio/the-audio-api/the-audioparam-interface/audioparam-setValueCurve-exceptions.html
OK /webdriver/tests/classic/dismiss_alert/dismiss.py (#39098)
- FAIL [expected PASS] subtest: test_dismiss_in_popup_window
```
AssertionError: no such alert (404): No user prompt is currently active.
```
CRASH [expected OK] /websockets/idlharness.any.html
CRASH [expected OK] /webxr/xrDevice_requestSession_no_mode.https.html

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

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.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/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/idbobjectstore_getAll.any.worker.html (#39400)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/idbrequest-onupgradeneeded.any.html (#38895)
- PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess
OK /IndexedDB/idbrequest-onupgradeneeded.any.worker.html (#38971)
- PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess

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"

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

assert_throws_exactly: throwing getter should rethrow during clone function "() =&gt; {
      cursor.update(value);
    }" threw object "TypeError: cursor.update 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] subtest: IDBCursor update() method with throwing/invalid keys

assert_throws_exactly: throwing getter should rethrow during clone function "() =&gt; {
      cursor.update(value);
    }" threw object "TypeError: cursor.update is not a function" but we expected it to throw object "getter: throwing from getter"

OK /IndexedDB/transaction-deactivation-timing.any.html (#38772)
- PASS [expected FAIL] subtest: New transactions are deactivated before next task
- PASS [expected FAIL] subtest: New transactions from microtask are deactivated before next task
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"
```
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 [expected OK] /focus/focus-event-after-switching-iframes.sub.html (#40368)
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/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted

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]
}"

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/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
- FAIL [expected TIMEOUT] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
```
assert_array_equals: animationFrame lengths differ, expected array ["autofocus", "scroll", "animationFrame"] length 3, got ["animationFrame"] length 1
```
OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
- FAIL [expected PASS] subtest: multipart/form-data: Basic test (formdata event)
```
assert_equals: expected "\r\nContent-Disposition: form-data; name=\"basic\"\r\n\r\ntest\r\n--\r\n" but got ""
```
- PASS [expected FAIL] subtest: multipart/form-data: Basic File test (formdata event)
- PASS [expected FAIL] subtest: multipart/form-data: 0x00 in name (normal form)
- PASS [expected FAIL] subtest: multipart/form-data: 0x00 in value (formdata event)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
- PASS [expected FAIL] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
FAIL [expected PASS] /png/apng/acTL-plays-one.html (#41218)
OK /preload/prefetch-document.html (#37210)
- PASS [expected FAIL] subtest: different-site document prefetch with 'as=document' should not be consumed
OK /preload/preload-error.sub.html (#37177)
- PASS [expected FAIL] subtest: 404 (image): main
- FAIL [expected PASS] subtest: 404 (style): main
```
assert_unreached: Should have rejected: undefined Reached unreachable code
```
- FAIL [expected PASS] subtest: 404 (script): main
```
assert_unreached: Should have rejected: undefined Reached unreachable code
```
- PASS [expected FAIL] subtest: CORS (fetch): main
OK /preload/preload-resource-match.https.html (#38088)
- PASS [expected FAIL] subtest: Loading font (anonymous) with link (no-cors) should discard the preloaded response
- PASS [expected FAIL] subtest: Loading font (anonymous) with link (use-credentials) should discard the preloaded response
CRASH [expected OK] /resource-timing/render-blocking-status-link.html (#41664)
TIMEOUT /resource-timing/test_resource_timing.html (#25720)
- PASS [expected FAIL] subtest: window.performance.getEntriesByName() and window.performance.getEntriesByNameType() return same data (xmlhttprequest)
TIMEOUT /resource-timing/test_resource_timing.https.html (#25216)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
- PASS [expected FAIL] subtest: window.performance.getEntriesByName() and window.performance.getEntriesByNameType() return same data (xmlhttprequest)
TIMEOUT [expected OK] /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- TIMEOUT [expected PASS] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Navigate a window via anchor with javascript:-urls w/ default policy in report-only mode.
- NOTRUN [expected PASS] subtest: Navigate a frame via anchor with javascript:-urls in enforcing mode.
TIMEOUT /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected TIMEOUT] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
- TIMEOUT [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.
```
Test timed out
```

Stable unexpected results (9)

OK /css/css-fonts/font-display/font-display-failure-fallback.html
- PASS [expected FAIL] subtest: Fallback for font failure period
OK /preload/preload-font-crossorigin.html
- PASS [expected FAIL] subtest: Same origin font preload without crossorigin attribute
- PASS [expected FAIL] subtest: Cross origin font preload without crossorigin attribute
OK /preload/subresource-integrity-font.html
- PASS [expected FAIL] subtest: Cross-origin, not CORS request, with empty integrity.
TIMEOUT /resource-timing/TAO-match.html
- FAIL [expected TIMEOUT] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value list contains a wildcard. (font)
```
assert_greater_than_equal: domainLookupStart should be greater than fetchStart expected a number greater than or equal to 237.13 but got 0
```
- PASS [expected NOTRUN] subtest: The timing allow check algorithm will fail when the Timing-Allow-Origin header value list contains a null origin. (font)
- FAIL [expected NOTRUN] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value list contains multiple wildcards. (font)
```
assert_greater_than_equal: domainLookupStart should be greater than fetchStart expected a number greater than or equal to 330.87 but got 0
```
- PASS [expected NOTRUN] subtest: The timing allow check algorithm will fail when the Timing-Allow-Origin header value contains only the uppercased origin. (font)
- PASS [expected NOTRUN] subtest: The timing allow check algorithm will fail when the Timing-Allow-Origin header value contains the origin, a space, then a wildcard. (font)
- PASS [expected NOTRUN] subtest: The timing allow check algorithm will fail when the Timing-Allow-Origin header is not present. (font)
- FAIL [expected NOTRUN] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value contains only the origin. (iframe)
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before entry fired"
```
- FAIL [expected NOTRUN] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value contains only a wildcard. (iframe)
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before entry fired"
```
- FAIL [expected NOTRUN] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value list contains a case-sensitive match. (iframe)
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before entry fired"
```
- FAIL [expected NOTRUN] subtest: The timing allow check algorithm will pass when the Timing-Allow-Origin header value list contains the origin and a wildcard. (iframe)
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before entry fired"
```
- And 1 more unexpected results...
OK /resource-timing/initiator-type/dynamic-insertion.html
- PASS [expected FAIL] subtest: A font should have the 'css' initiator type.
OK /resource-timing/initiator-type/link.html
- PASS [expected FAIL] subtest: The initiator type for font resources embedded in css must be 'css'
OK /resource-timing/initiator-type/style.html
- PASS [expected FAIL] subtest: The initiator type for '@font-face' resources must be 'css'
OK [expected TIMEOUT] /resource-timing/nextHopProtocol-is-tao-protected.https.html
- PASS [expected FAIL] subtest: Fetch TAO-less font from remote origin. Make sure nextHopProtocol is the empty string.
- FAIL [expected TIMEOUT] subtest: Fetch TAO-less object from remote origin. Make sure nextHopProtocol is the empty string.
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"
```
- FAIL [expected NOTRUN] subtest: Fetch TAO'd object from remote origin. Make sure nextHopProtocol is not the empty string.
```
promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"
```
- PASS [expected NOTRUN] subtest: Fetch TAO-less script from remote origin. Make sure nextHopProtocol is the empty string.
- FAIL [expected NOTRUN] subtest: Fetch TAO'd script from remote origin. Make sure nextHopProtocol is not the empty string.
```
assert_not_equals: nextHopProtocol should not be the empty string. got disallowed value ""
```
- PASS [expected NOTRUN] subtest: Fetch TAO-less stylesheet from remote origin. Make sure nextHopProtocol is the empty string.
- FAIL [expected NOTRUN] subtest: Fetch TAO'd stylesheet from remote origin. Make sure nextHopProtocol is not the empty string.
```
assert_not_equals: nextHopProtocol should not be the empty string. got disallowed value ""
```
- PASS [expected NOTRUN] subtest: Fetch TAO-less synchronous xhr from remote origin. Make sure nextHopProtocol is the empty string.
- FAIL [expected NOTRUN] subtest: Fetch TAO'd synchronous xhr from remote origin. Make sure nextHopProtocol is not the empty string.
```
assert_not_equals: nextHopProtocol should not be the empty string. got disallowed value ""
```
- PASS [expected NOTRUN] subtest: Fetch TAO-less asynchronous xhr from remote origin. Make sure nextHopProtocol is the empty string.
- And 1 more unexpected results...

TIMEOUT /resource-timing/response-status-code.html

FAIL [expected TIMEOUT] subtest: This test validates the response status of resources. 79

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 80

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 81

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 82

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 83

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 84

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 85

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 86

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 87

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

FAIL [expected NOTRUN] subtest: This test validates the response status of resources. 88

promise_test: Unhandled rejection with value: object "TimeoutError: Timeout was reached before load or error events fired"

And 1 more unexpected results...

github-actions · 2026-01-09T01:34:31Z

⚠️ Try run (#20837499413) failed!

jdm · 2026-01-09T01:36:14Z

Love those results! You can update the expected results with ./mach update-wpt https://github.com/servo/servo/actions/runs/20837499413 and commit the changes.

Signed-off-by: lumi <[email protected]>

lumi-me-not · 2026-01-09T01:51:42Z

I've committed the results. Some of these configuration changes are in areas that seem unrelated to the changes or add expected: FAIL, should these be removed?

jdm · 2026-01-09T01:57:37Z

I've committed the results. Some of these configuration changes are in areas that seem unrelated to the changes or add expected: FAIL, should these be removed?

Nope—there's a lot of tests that previously didn't get a chance to run, and now they do and they fail. This happens when a test involving a font face timed out because no resource timing information was ever recorded.

lumi-me-not · 2026-01-09T02:13:48Z

Ah, got it! Thanks for the help! :)

lumi-me-not mentioned this pull request Jan 8, 2026

Web fonts do not create resource timing entries #41660

Closed

lumi-me-not added 4 commits January 9, 2026 01:57

Add "css" initiator type in performance resource timing

fe70ddf

Signed-off-by: lumi <[email protected]>

Use "css" initiator type for fetching fonts

4f3ae56

Signed-off-by: lumi <[email protected]>

Remove unnecessary FetchResponseListener bound on submit_timing

bb6620b

Signed-off-by: lumi <[email protected]>

Remove unnecessary FetchResponseListener implementation for `FontFe…

1c56971

…tchListener` Signed-off-by: lumi <[email protected]>

lumi-me-not force-pushed the issue-41660 branch from b5d6544 to 1c56971 Compare January 9, 2026 00:58

lumi-me-not marked this pull request as ready for review January 9, 2026 00:59

lumi-me-not requested review from gterzian and nicoburns as code owners January 9, 2026 00:59

servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Jan 9, 2026

jdm added the T-linux-wpt Do a try run of the WPT label Jan 9, 2026

github-actions bot removed the T-linux-wpt Do a try run of the WPT label Jan 9, 2026

Update WPT test configuration with ./mach update-wpt

aea5d51

Signed-off-by: lumi <[email protected]>

jdm approved these changes Jan 9, 2026

View reviewed changes

servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Jan 9, 2026

jdm added this pull request to the merge queue Jan 9, 2026

servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jan 9, 2026

Merged via the queue into servo:main with commit 76b2b5a Jan 9, 2026
29 checks passed

servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jan 9, 2026

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