Bug 315282 – [Tahoe Release x86_64] 3 timeline tests are flaky test failures

• Status: NEW
• Component: Animations

[Karl Rackler]

Description:
3 tests share a common regression range on mac Tahoe Release x86_64.

Affected tests:
imported/w3c/web-platform-tests/scroll-animations/css/deferred-timeline-composited.html
webanimations/document-timeline-current-time-updates-without-running-animations.html
webanimations/frame-rate/document-timeline-maximum-frame-rate.html

This test could not be reproduced because of lack of x86_64 reroduction mac.

History:
imported/w3c/web-platform-tests/scroll-animations/css/deferred-timeline-composited.html:
https://results.webkit.org/?version_name=Tahoe&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fscroll-animations%2Fcss%2Fdeferred-timeline-composited.html
webanimations/document-timeline-current-time-updates-without-running-animations.html:
https://results.webkit.org/?version_name=Tahoe&suite=layout-tests&test=webanimations%2Fdocument-timeline-current-time-updates-without-running-animations.html
webanimations/frame-rate/document-timeline-maximum-frame-rate.html:
https://results.webkit.org/?version_name=Tahoe&suite=layout-tests&test=webanimations%2Fframe-rate%2Fdocument-timeline-maximum-frame-rate.html

--- Test Output ---

--- imported/w3c/web-platform-tests/scroll-animations/css/deferred-timeline-composited.html ---
Diff:
[Image diff - see attachment]

--- End Test Output ---

[Karl Rackler]

Created attachment 479753 [details]
Image: deferred-timeline-composited-diff.png

[Karl Rackler]

Created attachment 479754 [details]
Image: deferred-timeline-composited-actual.png

[Radar WebKit Bug Importer]

<rdar://problem/177621686>

[Radar WebKit Bug Importer]

<rdar://problem/177621691>

[Karl Rackler]

Test Run: https://build.webkit.org/#/builders/1686/builds/2636
--- deferred-timeline-composited.html ---
07:21:20.627 97440 [71890/91362] imported/w3c/web-platform-tests/scroll-animations/css/deferred-timeline-composited.html failed unexpectedly (reference mismatch maxDifference=255; totalPixels=5000)
07:21:20.627 97440 worker/9 imported/w3c/web-platform-tests/scroll-animations/css/deferred-timeline-composited.html failed:

--- document-timeline-current-time-updates-without-running-animations.html ---
07:28:53.070 97440 [88868/91362] webanimations/document-timeline-current-time-updates-without-running-animations.html failed unexpectedly (text diff)
07:28:53.070 97440 worker/8 webanimations/document-timeline-current-time-updates-without-running-animations.html failed:

--- document-timeline-maximum-frame-rate.html ---
07:27:06.798 97440 [85540/91362] webanimations/frame-rate/document-timeline-maximum-frame-rate.html failed unexpectedly (text diff)
07:27:06.798 97440 worker/21 webanimations/frame-rate/document-timeline-maximum-frame-rate.html failed:

Diff (document-timeline-current-time-updates-without-running-animations):
--- /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Tests/build/layout-test-results/webanimations/document-timeline-current-time-updates-without-running-animations-expected.txt
+++ /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Tests/build/layout-test-results/webanimations/document-timeline-current-time-updates-without-running-animations-actual.txt
@@ -1,3 +1,3 @@
 
-PASS The document timeline's current time should increase when the page rendering does not update.
+FAIL The document timeline's current time should increase when the page rendering does not update. assert_greater_than: The timeline time should increase after waiting for over the typical duration between two page rendering updates expected a number greater than 50 but got 50
 

Diff (frame-rate/document-timeline-maximum-frame-rate):
--- /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Tests/build/layout-test-results/webanimations/frame-rate/document-timeline-maximum-frame-rate-expected.txt
+++ /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Tests/build/layout-test-results/webanimations/frame-rate/document-timeline-maximum-frame-rate-actual.txt
@@ -1,3 +1,3 @@
 
-PASS document.timeline.maximumFrameRate is defined and reports an expected frame rate
+FAIL document.timeline.maximumFrameRate is defined and reports an expected frame rate assert_greater_than_equal: expected a number greater than or equal to 60 but got 30

[EWS]

Test gardening commit 313664@main (ea7147aeea6f): <https://commits.webkit.org/313664@main>

Reviewed commits have been landed. Closing PR #65410 and removing active labels.