Bug 260103 – REGRESSION(266850@main): imported/w3c/web-platform-tests/cookie-store/change_eventhandler_for_document_cookie.https.window.html is a consistent failure.

• Status: RESOLVED
• Resolution: FIXED
• Component: WebKit API

imported/w3c/web-platform-tests/cookie-store/change_eventhandler_for_document_cookie.https.window.html is flaky

[Radar WebKit Bug Importer]

<rdar://problem/114112210>

[Ben Schwartz]

imported/w3c/web-platform-tests/cookie-store/change_eventhandler_for_document_cookie.https.window.html

This test is a consistent text failure on wk2.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcookie-store%2Fchange_eventhandler_for_document_cookie.https.window.html

TEXT DIFF:

 PASS document.cookie set/overwrite/delete observed by CookieStore
 PASS CookieStore set/overwrite/delete observed by document.cookie
 FAIL CookieStore agrees with document.cookie on encoding non-ASCII cookies assert_equals: Cookie we wrote using document.cookie in cookie jar expected (string) "DOCUMENT-ðŸª=🔵" but got (undefined) undefined
-PASS document.cookie agrees with CookieStore on encoding non-ASCII cookies
+FAIL document.cookie agrees with CookieStore on encoding non-ASCII cookies assert_equals: Empty cookie jar after CookieStore delete expected (undefined) undefined but got (string) "DOCUMENT-ðŸª=🔵"
 
DIFF URL:

https://build.webkit.org/results/Apple-Sonoma-Release-AppleSilicon-WK2-Tests/269423@main%20(319)/imported/w3c/web-platform-tests/cookie-store/change_eventhandler_for_document_cookie.https.window-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this issue on macOS Ventura (13.6, 22G120/arm64) ToT using the following command:

run-webkit-tests -v --iterations 10 --exit-after-n-failures 1 imported/w3c/web-platform-tests/cookie-store/change_eventhandler_for_document_cookie.https.window.html

REGRESSION:

The flakiness dashboard indicates a potential regression point at 266850@main. Changes at this point appear to be directly related to this issue and are likely what caused the failure.

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/19235

[EWS]

Committed 269503@main (8572ca9d273c): <https://commits.webkit.org/269503@main>

Reviewed commits have been landed. Closing PR #19235 and removing active labels.