Bug 308494 – [macOS] media/remote-control-command-is-user-gesture.html is a flaky timeout

• Component: New Bugs
• Status: NEW

[Diego De La Toba]

media/remote-control-command-is-user-gesture.html is a flaky timeout on macOS release and debug. Failure does not show on bots.


HISTORY:
https://results.webkit.org/?suite=layout-tests&test=media%2Fremote-control-command-is-user-gesture.html


DIFF:
--- /Volumes/Data/Builds/Mac/Production/TestBuild308046@main/layout-test-results/media/remote-control-command-is-user-gesture-expected.txt
+++ /Volumes/Data/Builds/Mac/Production/TestBuild308046@main/layout-test-results/media/remote-control-command-is-user-gesture-actual.txt
@@ -1,3 +1,5 @@
+FAIL: Timed out waiting for notifyDone to be called
+
 Test that a remote control command is treated as a user gesture.
 
 
@@ -12,6 +14,4 @@
 * Send a play command, it should succeed.
 RUN(internals.postRemoteControlCommand('play'))
 
-EVENT(timeupdate)
-END OF TEST
 

REPRODUCTION:
I was able to reproduce this on macOS 26.2 release and debug with the following:

run-webkit-tests --no-retry --no-show-results --iterations=2000 --force -f media/remote-control-command-is-user-gesture.html

I will mark expectations as pass timeout while this pends investigation

[Radar WebKit Bug Importer]

<rdar://problem/171016280>

[Diego De La Toba]

Pull request: https://github.com/WebKit/WebKit/pull/59265

[EWS]

Test gardening commit 308075@main (caf764bd989d): <https://commits.webkit.org/308075@main>

Reviewed commits have been landed. Closing PR #59265 and removing active labels.

[Diego De La Toba]

The test is timing out intermittently because it uses timeupdate (line 19) to detect when video playback starts.

Per the HTML5 spec, timeupdate events fire periodically in ~250ms intervals during playback, not immediately when playback starts. Under system load or with --run-singly it appears that timeupdate doesn't fire within the expected window.

A potential solution for this is to change waitForEventAndEnd('timeupdate') to waitForEventAndEnd('playing') since the playing event fires immediately when playback begins per spec. 

Spec: https://html.spec.whatwg.org/multipage/media.html

[Diego De La Toba]

Pull request: https://github.com/WebKit/WebKit/pull/59273