Bug 223966 – [ macOS ] imported/w3c/web-platform-tests/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html is a flakey text failure

• Status: RESOLVED
• Resolution: FIXED
• Component: Web Audio

[Robert Jenner]

imported/w3c/web-platform-tests/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html

is a flakey text failure in macOS.

HISTORY URL:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fwebaudio%2Fthe-audio-api%2Fthe-analysernode-interface%2Frealtimeanalyser-fft-scaling.html&platform=mac

TEXT DIFF:
 PASS   128-point FFT peak value in dBFS is greater than or equal to -13.56.
 PASS   256-point FFT peak position is equal to 8.
 PASS   256-point FFT peak value in dBFS is greater than or equal to -13.56.
+PASS   1024-point FFT peak position is equal to 32.
+PASS   1024-point FFT peak value in dBFS is greater than or equal to -13.56.
 PASS   512-point FFT peak position is equal to 16.
 PASS   512-point FFT peak value in dBFS is greater than or equal to -13.56.
-PASS   1024-point FFT peak position is equal to 32.
-PASS   1024-point FFT peak value in dBFS is greater than or equal to -13.56.
 PASS   2048-point FFT peak position is equal to 64.
 PASS   2048-point FFT peak value in dBFS is greater than or equal to -13.56.
 PASS   4096-point FFT peak position is equal to 128.

[Robert Jenner]

Reproduced the failure at BigSur Debug ToT x86_64 using the following test:

run-webkit-test imported/w3c/web-platform-tests/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html  --iterations 1000 -f

Failures happen most commonly on Apple Silicon Macs in Debug, but it has a fairly long history of occurring in Intel Catalina and BigSur in release and debug.

[Radar WebKit Bug Importer]

<rdar://problem/76028345>

[Robert Jenner]

Updated test expectations to Pass Failure while test is being reviewed:
https://trac.webkit.org/changeset/275249/webkit

[Chris Dumez]

Created attachment 425646 [details]
Patch

[EWS Watchlist]

This patch modifies the imported WPT tests. Please ensure that any changes on the tests (not coming from a WPT import) are exported to WPT. Please see https://trac.webkit.org/wiki/WPTExportProcess

[EWS]

Tools/Scripts/svn-apply failed to apply attachment 425646 [details] to trunk.
Please resolve the conflicts and upload a new patch.

[Chris Dumez]

Committed r275803 (236374@main): <https://commits.webkit.org/236374@main>