Bug 193399 – REGRESSION: Layout Test media/media-fullscreen-return-to-inline.html is a flaky timeout

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: Tools / Tests

[Truitt Savell]

The following layout test is failing on MacOS

media/media-fullscreen-return-to-inline.html

Probable cause:

This test recently became a flakey failure. It is highly intermittent and has no clear regression point. First failure came from a run of r239860. 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2Fmedia-fullscreen-return-to-inline.html

Diff:
--- /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/media/media-fullscreen-return-to-inline-expected.txt
+++ /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/media/media-fullscreen-return-to-inline-actual.txt
@@ -12,6 +12,6 @@
 EVENT(webkitfullscreenchange)
 RUN(video.webkitExitFullscreen())
 EVENT(webkitfullscreenchange)
-EXPECTED (video.paused == 'false') OK
+EXPECTED (video.paused == 'false'), OBSERVED 'true' FAIL
 END OF TEST

[Truitt Savell]

the behavior of this test seems to have changed around 1/17 around r240124.

the test is not timing out with around the same frequency as the failures. the test is no longer failing.

[Truitt Savell]

This test timeout is reproducible with command:
run-webkit-tests --root testbuild-240924 media/media-fullscreen-return-to-inline.html --iterations 500 -f

[Radar WebKit Bug Importer]

<rdar://problem/48007955>

[Ryan Haddad]

This is still timing out quite frequently on the bots, so we should consider updating TestExpectations.

[Truitt Savell]

marked test flakey in https://trac.webkit.org/changeset/242744/webkit

[Peng Liu]

*** This bug has been marked as a duplicate of bug 211645 ***