[Webkit-unassigned] [Bug 261356] New: [ macOS wk2 debug ] fast/mediastream/device-change-event-2.html is a flaky failure.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261356

            Bug ID: 261356
           Summary: [ macOS wk2 debug ]
                    fast/mediastream/device-change-event-2.html is a flaky
                    failure.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ben_schwartz at apple.com
                CC: webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com, youennf at gmail.com

fast/mediastream/device-change-event-2.html

This test is a flaky failure on debug builds of macOS wk2 (mostly on x86_64 with occasional failures on arm64).

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=fast%2Fmediastream%2Fdevice-change-event-2.html

TEXT DIFF (though the test seems to fail with different messages each time):

 CONSOLE MESSAGE: A MediaStreamTrack ended due to a capture failure
 CONSOLE MESSAGE: A MediaStreamTrack ended due to a capture failure
+CONSOLE MESSAGE: Error: assert_true: devicechange should only fire when the document is focused and active expected true got false
+
+Harness Error (FAIL), message = Error: assert_true: devicechange should only fire when the document is focused and active expected true got false

 PASS 'devicechange' event fired when device list changes
 PASS 'devicechange' events fired quickly are coalesced

DIFF URL:

https://build.webkit.org/results/Apple-Ventura-Debug-WK2-Tests/267790@main%20(2946)/fast/mediastream/device-change-event-2-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this issue constantly on macOS Ventura (13.5, 22G74/x86_64) WK2 debug at 267085 at main using the following command:

run-webkit-tests --clobber-old-results --debug --verbose --iterations 50 fast/mediastream/device-change-event-2.html

REGRESSION:

I was unable to locate a regression point; however, according to the related issue, this issue (or similar) has existed since 225536 at main.

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