[Webkit-unassigned] [Bug 206958] New: [ macOS wk2 ] http/tests/media/media-stream/get-display-media-prompt.html is flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206958

            Bug ID: 206958
           Summary: [ macOS wk2 ]
                    http/tests/media/media-stream/get-display-media-prompt
                    .html is flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jacob_uphoff at apple.com

http/tests/media/media-stream/get-display-media-prompt.html 

this test is a flaky failure on MacOS 

test is also flaky timing out 

I was able to reproduce the failure by running the test in iterations

History:
https://results.webkit.org/?suite=layout-tests&test=http%2Ftests%2Fmedia%2Fmedia-stream%2Fget-display-media-prompt.html
Diff:
--- /Volumes/Data/slave/catalina-release-tests-wk2/build/layout-test-results/http/tests/media/media-stream/get-display-media-prompt-expected.txt
+++ /Volumes/Data/slave/catalina-release-tests-wk2/build/layout-test-results/http/tests/media/media-stream/get-display-media-prompt-actual.txt
@@ -40,12 +40,12 @@
 PASS err.name is "TypeError"

 ** Request a stream with valid constraints, the user should be prompted **
-PASS numberOfTimesGetUserMediaPromptHasBeenCalled() is 3
-PASS stream.getAudioTracks().length is 0
-PASS stream.getVideoTracks().length is 1
+FAIL numberOfTimesGetUserMediaPromptHasBeenCalled() should be 3. Was 2.
+FAIL stream.getAudioTracks().length should be 0. Threw exception TypeError: undefined is not an object (evaluating 'stream.getAudioTracks')
+FAIL stream.getVideoTracks().length should be 1. Threw exception TypeError: undefined is not an object (evaluating 'stream.getVideoTracks')

 ** Request a stream with an exact audio constraint, it should be ignored **
-PASS numberOfTimesGetUserMediaPromptHasBeenCalled() is 4
+FAIL numberOfTimesGetUserMediaPromptHasBeenCalled() should be 4. Was 3.
 PASS stream.getAudioTracks().length is 0
 PASS stream.getVideoTracks().length is 1

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