Bug 287987 – [ macOS WK2 ] media/media-source/media-source-minimumupcomingpresentationtime.html is a flaky text failure

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: Media

[Robert Jenner]

media/media-source/media-source-minimumupcomingpresentationtime.html

is a flaky text failure on MacOS WK2. As of this writing it is flaky on macOS Ventura and higher. 

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=media%2Fmedia-source%2Fmedia-source-minimumupcomingpresentationtime.html

DIFF:
https://build.webkit.org/results/Apple-Sequoia-Release-AppleSilicon-WK2-Tests/290607@main%20(1695)/media/media-source/media-source-minimumupcomingpresentationtime-pretty-diff.html

 RUN(internals.setMaximumQueueDepthForTrackID(sourceBuffer, 1, 3))
 RUN(sourceBuffer.appendBuffer(samples))
 EVENT(updateend)
-EXPECTED (internals.minimumUpcomingPresentationTimeForTrackID(sourceBuffer, 1) == '1') OK
+EXPECTED (internals.minimumUpcomingPresentationTimeForTrackID(sourceBuffer, 1) == '1'), OBSERVED '0' FAIL
 RUN(video.currentTime = 4)
 EVENT(seeked)
 EXPECTED (internals.minimumUpcomingPresentationTimeForTrackID(sourceBuffer, 1) == '8') OK
 RUN(sourceBuffer.appendBuffer(samples))
 EVENT(updateend)
-EXPECTED (internals.minimumUpcomingPresentationTimeForTrackID(sourceBuffer, 1) == '7') OK
+EXPECTED (internals.minimumUpcomingPresentationTimeForTrackID(sourceBuffer, 1) == '7'), OBSERVED '8' FAIL
 END OF TEST

[Robert Jenner]

It should be noted that this test ONLY runs in WK2, not WK1.

[Robert Jenner]

I was able to reproduce the failure at macOS Sequoia Production ToT running the test as follows:

run-webkit-tests media/media-source/media-source-minimumupcomingpresentationtime.html --iterations 1000

Of 1000 iterations it reproduces approximately 13 times.

[Radar WebKit Bug Importer]

<rdar://problem/145156323>

[EWS]

Test gardening commit 290630@main (c446f3429528): <https://commits.webkit.org/290630@main>

Reviewed commits have been landed. Closing PR #40882 and removing active labels.

[Jer Noble]

> result-analysis confidence-check media/media-source/media-source-minimumupcomingpresentationtime.html      
Results for media/media-source/media-source-minimumupcomingpresentationtime.html
	PASS	100.00%

This test no longer flakes.

[Jer Noble]

*** This bug has been marked as a duplicate of bug 313712 ***