[Webkit-unassigned] [Bug 221422] New: REGRESSION (r271341): [DEBUG MACOS WK2] media/modern-media-controls/volume-down-support/volume-down-support.html is a flakey text failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=221422

            Bug ID: 221422
           Summary: REGRESSION (r271341): [DEBUG MACOS WK2]
                    media/modern-media-controls/volume-down-support/volume
                    -down-support.html is a flakey text failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Jenner at apple.com

media/modern-media-controls/volume-down-support/volume-down-support.html

Is a flakey text failure in Debug MacOS WK2. 

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=media%2Fmodern-media-controls%2Fvolume-down-support%2Fvolume-down-support.html

DIFF URLs: 
r272369: https://build.webkit.org/results/Apple-BigSur-Debug-WK2-Tests/r272369%20(1073)/media/modern-media-controls/volume-down-support/volume-down-support-pretty-diff.html

r271342: https://build.webkit.org/results/Apple-BigSur-Debug-WK2-Tests/r271342%20(651)/media/modern-media-controls/volume-down-support/volume-down-support-pretty-diff.html

DIFF TEXT:
--- /Volumes/Data/slave/bigsur-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/volume-down-support/volume-down-support-expected.txt
+++ /Volumes/Data/slave/bigsur-debug-tests-wk2/build/layout-test-results/media/modern-media-controls/volume-down-support/volume-down-support-actual.txt
@@ -3,15 +3,8 @@
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


-PASS !!internals.shadowRoot(media).querySelector("button.volume-down") became true
-PASS media.webkitDisplayingFullscreen is true
-PASS media.volume is 0.5
-PASS volumeSlider.getBoundingClientRect().left became 196
-
-Pressing on the volume down button
-PASS media.volume is 0
-
+Toggling fullscreen failed
 PASS successfullyParsed is true

 TEST COMPLETE
-
+Enter fullscreen


Most recent failure reported on r272369. 

History indicates flakey failures started at r271342

Compared reported failures, and confirmed that they are the same failures in the history.

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