media/modern-media-controls/overflow-support/chapters.html Is a flaky failure and timeout on both BigSur Debug and Catalina Debug. History: https://results.webkit.org/?suite=layout-tests&test=media%2Fmodern-media-controls%2Foverflow-support%2Fchapters.html Text Diff: --- /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/overflow-support/chapters-expected.txt +++ /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/overflow-support/chapters-actual.txt @@ -1,15 +1,5 @@ -Testing the OverflowSupport behavior for Playback Speed. - -On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". - - -PASS shadowRoot.querySelector('button.overflow') became different from null -PASS shadowRoot.querySelector('button.overflow').getBoundingClientRect().width became different from 0 -PASS media.textTracks[0].mode became different from 'disabled' -Tapping overflow button... -Selecting first chapter cue... -PASS media.currentTime >= 5 became true -PASS successfullyParsed is true +CONSOLE MESSAGE: SyntaxError: Unexpected token '<<' +FAIL successfullyParsed should be true (of type boolean). Was undefined (of type undefined). TEST COMPLETE
<rdar://problem/79370477>
This test was initially timing out consistently when introduced. Then around r278674 appeared to only become flaky timing out and failing on Big Sur and Catalina Debug
This is an unusual failure mode. Where is this '<<' even coming from?