Bug 242043 – [ macOS Release ] TestWebKitAPI.VideoControlsManager.VideoControlsManagerMultipleVideosScrollPlayingMutedVideoOutOfView is a flaky timeout

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

[Karl Rackler]

Description:
TestWebKitAPI.VideoControlsManager.VideoControlsManagerMultipleVideosScrollPlayingMutedVideoOutOfView

The first failure that I saw on the dashboard was at 248582@main.  The test appears to be resolved at 248616@main, and then it becomes a flaky timeout again at 248952@main.

I attempted to reproduce this locally but have been unsuccessful thus far.

History:
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.VideoControlsManager.VideoControlsManagerMultipleVideosScrollPlayingMutedVideoOutOfView&limit=50000&platform=mac&style=release

run-api-tests stdio:

Timeout
    TestWebKitAPI.VideoControlsManager.VideoControlsManagerMultipleVideosScrollPlayingMutedVideoOutOfView
        2022-06-27 14:25:14.591 com.apple.WebKit.WebContent.Development[14533:173559099] ApplePersistence=NO

[Radar WebKit Bug Importer]

<rdar://problem/96026645>

[Karl Rackler]

I have disabled this test while this issue is investigated.

[EWS]

Test gardening commit 251929@main (d64759548f1b): <https://commits.webkit.org/251929@main>

Reviewed commits have been landed. Closing PR #1857 and removing active labels.

[Cameron McCormack (:heycam)]

The problem is that the test runs some script, muteFirstVideoAndScrollToSecondVideo(), and then we immediately add a handler for a message that the page sends in response.  Depending on timing, the Web process can end up sending the message before the UI process has added the handler.

[Cameron McCormack (:heycam)]

Duping to bug 175909, which has the same underlying issue.

*** This bug has been marked as a duplicate of bug 175909 ***