Bug 260879

Summary:	[ macOS arm64 wk2 ] inspector/css/node-styles-refreshed.html is a flaky text failure.
Product:	WebKit	Reporter:	Ben Schwartz <ben_schwartz>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	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=224788

Description Ben Schwartz 2023-08-29 14:52:46 PDT

inspector/css/node-styles-refreshed.html

This test is a flaky failure on macOS wk2 running on arm64 machines.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=inspector%2Fcss%2Fnode-styles-refreshed.html

TEXT DIFF:

 Testing that WI.DOMNodeStyles.Event.Refreshed event dispatches with correct significantChange flag.
 
+ERROR: Received a command response without a corresponding callback or promise. [object Object]
+ERROR: Received a command response without a corresponding callback or promise. [object Object]
 
 == Running test suite: NodeStylesRefreshed
 -- Running test case: NodeStylesRefreshed.ClassAdded

DIFF URL:

https://build.webkit.org/results/Apple-Ventura-Release-AppleSilicon-WK2-Tests/267407%40main%20(4683)/inspector/css/node-styles-refreshed-pretty-diff.html

REPRODUCTION:

I was unable to reproduce this bug on macOS Ventura 13.5 (22G74/arm64).

REGRESSION:

I was unable to bisect a regression, as this bug has persisted since Big Sur at the earliest (see bug #224788).

Comment 1 Radar WebKit Bug Importer 2023-08-29 14:53:05 PDT

<rdar://problem/114661532>

Comment 2 Ben Schwartz 2023-08-29 15:44:54 PDT

REPRODUCIBILITY:

After setting a "Slow" test expectation, I was able to reproduce this bug on macOS Ventura 13.5 (22G74/arm64) at 267321@main:

run-webkit-tests --verbose --iterations 1000 --child-processes 25 -f --clobber-old-results inspector/css/node-styles-refreshed.html