Bug 261344

Summary: NEW TEST (267029@main): [ macOS wk2 ] requestidlecallback/requestidlecallback-does-not-block-timer.html is a flaky text failure.
Product: WebKit Reporter: Ben Schwartz <ben_schwartz>
Component: DOMAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: ap, rniwa, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=203840
https://bugs.webkit.org/show_bug.cgi?id=261341

Description Ben Schwartz 2023-09-08 11:05:57 PDT 
requestidlecallback/requestidlecallback-does-not-block-timer.html

This test is a flaky text failure on macOS wk2.

HISTORY:

https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=requestidlecallback%2Frequestidlecallback-in-page-cache.html&test=requestidlecallback%2Frequestidlecallback-does-not-block-timer.html

TEXT DIFF:

 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS didFireTimer is true
-PASS idleDeadline.timeRemaining() > 0 is true
-PASS idleDeadline.timeRemaining() is 0
-PASS didRunIdleCallback is true
+FAIL didRunIdleCallback should be true. Was false.
 PASS successfullyParsed is true
+Some tests failed.
 
 TEST COMPLETE
 
DIFF URL:

https://build.webkit.org/results/Apple-Ventura-Debug-WK2-GPUProcess-Tests/267753@main%20(3505)/requestidlecallback/requestidlecallback-does-not-block-timer-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this issue on macOS Ventura (13.5, 22G74/arm64) ToT using the following command:

run-webkit-tests --verbose --clobber-old-results --iterations 2000 --child-processes 10 -f --exit-after-n-failures 1 requestidlecallback/requestidlecallback-does-not-block-timer.html

REGRESSION:

This test has been flaky since its introduction at 267029@main.
Comment 1 Radar WebKit Bug Importer 2023-09-08 11:06:05 PDT 
<rdar://problem/115181506>
Comment 2 EWS 2023-09-08 11:13:27 PDT 
Test gardening commit 267802@main (ba7050225fec): <https://commits.webkit.org/267802@main>

Reviewed commits have been landed. Closing PR #17602 and removing active labels.