Bug 289542 – REGRESSION(285951@main?): [wk2] imported/w3c/web-platform-tests/navigation-api/navigate-event/intercept-handler-throws.html is a flaky failure.

• Component: New Bugs
• Status: NEW

[Yasmin Karimi]

imported/w3c/web-platform-tests/navigation-api/navigate-event/intercept-handler-throws.html 

This test is a flaky failure on wk2 (near constant on wk2 Debug). 

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fnavigation-api%2Fnavigate-event%2Fintercept-handler-throws.html

TEXT DIFF:

@@ -1,6 +1,3 @@
-CONSOLE MESSAGE: Unhandled Promise Rejection: TypeError: a message
-
-Harness Error (FAIL), message = Unhandled rejection: a message
 
 PASS event.intercept() should abort if the handler throws

DIFF URL:

https://build.webkit.org/results/Apple-Sonoma-Debug-AppleSilicon-WK2-Tests/291947@main%20(5721)/imported/w3c/web-platform-tests/navigation-api/navigate-event/intercept-handler-throws-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this failure on MacOS Sequoia 15.3.1 (24D70 / arm64) at ToT with the following command:

run-webkit-tests imported/w3c/web-platform-tests/navigation-api/navigate-event/intercept-handler-throws.html --debug --iterations 20

REGRESSION:

The regression appears to be in the range:  285947@main - 285951@main.

According to the results dashboard and contextual information, the probable regression point is 285951@main. The code paths changed in this commit appear to be directly related to the observed regression test failures.

This shows the regression more clearly:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fnavigation-api%2Fnavigate-event%2Fintercept-handler-throws.html&recent=false&version_name=Sequoia&version_name=Sonoma&version_name=iOS%2018

[Radar WebKit Bug Importer]

<rdar://problem/146770462>

[EWS]

Test gardening commit 291956@main (232a4f01f34f): <https://commits.webkit.org/291956@main>

Reviewed commits have been landed. Closing PR #42263 and removing active labels.