Bug 223969

Summary: [ macOS wk2 ] imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiocontext-interface/processing-after-resume.https.html is a flakey text failure
Product: WebKit Reporter: Robert Jenner <Jenner>
Component: Web AudioAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: cdumez, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Robert Jenner 2021-03-30 17:27:54 PDT
imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiocontext-interface/processing-after-resume.https.html

is a flakey failure on macOS BigSur wk2. 

The very first failure occurred at r274555. Since then, it has failed mostly on BigSur wk2 on Apple Silicon, but it has failed one time on Intel. 

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebaudio%2Fthe-audio-api%2Fthe-audiocontext-interface%2Fprocessing-after-resume.https.html&platform=mac

TEXT DIFF:
-PASS Test consistency of processing after resume()
+FAIL Test consistency of processing after resume() assert_equals: node1 processed frame count expected 256 but got 0

Was able to reproduce the failure on BigSur wk2 Debug ToT on Intel using the following test:
run-webkit-test imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiocontext-interface/processing-after-resume.https.html  --iterations 1000 -f
Comment 1 Robert Jenner 2021-03-30 17:32:09 PDT
Updated test expectations to Pass Failure here:
https://trac.webkit.org/changeset/275250/webkit
Comment 2 Radar WebKit Bug Importer 2021-03-30 17:32:26 PDT
<rdar://problem/76030104>