[Webkit-unassigned] [Bug 229973] New: [Gstreamer] tests media/track/in-band/track-in-band-*-added-once.html are flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=229973

            Bug ID: 229973
           Summary: [Gstreamer] tests
                    media/track/in-band/track-in-band-*-added-once.html
                    are flaky
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: agoldmints at igalia.com

The flakiness has gotten substantially worse since r281741 but they were occasionally failing even before that, so I don't want to necessarily call this a regression.

When these tests fail, it looks like this:
--- /home/buildbot/worker/gtk-linux-64-release-tests/build/layout-test-results/media/track/in-band/track-in-band-kate-ogg-cues-added-once-expected.txt
+++ /home/buildbot/worker/gtk-linux-64-release-tests/build/layout-test-results/media/track/in-band/track-in-band-kate-ogg-cues-added-once-actual.txt
@@ -6,13 +6,13 @@
 ** Setting track 1 to showing
 RUN(inbandTrack1.mode = 'showing')
 RUN(video.play())
-EXPECTED (inbandTrack1.cues.length > '0') OK
+EXPECTED (inbandTrack1.cues.length > '0'), OBSERVED '0' FAIL
 RUN(video.pause())
 RUN(video.currentTime = 0)
 RUN(video.play())

 EVENT(seeked)
-EXPECTED (inbandTrack1.cues.length > '0') OK
+EXPECTED (inbandTrack1.cues.length > '0'), OBSERVED '0' FAIL
 RUN(video.pause())
 Test all cues are equal OK
 END OF TEST

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