Bug 289124 – [ macOS ] imported/w3c/web-platform-tests/html/cross-origin-opener-policy/tentative/noopener/coop-noopener-allow-popups.https.html is a flaky failure

• Status: NEW
• Component: New Bugs

[Dawn Morningstar]

imported/w3c/web-platform-tests/html/cross-origin-opener-policy/tentative/noopener/coop-noopener-allow-popups.https.html
Is a flaky failure on Debug MacOS queues, this has been failing since the test was introduced at 284866@main https://commits.webkit.org/284866@main

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fcross-origin-opener-policy%2Ftentative%2Fnoopener%2Fcoop-noopener-allow-popups.https.html&recent=false

TEST-RUN:
https://build.webkit.org/#/builders/934/builds/5646

DIFF-URL:
https://build.webkit.org/results/Apple-Sonoma-Debug-AppleSilicon-WK2-Tests/291583@main%20(5646)/imported/w3c/web-platform-tests/html/cross-origin-opener-policy/tentative/noopener/coop-noopener-allow-popups.https-diff.txt

DIFF:
--- /Volumes/Data/worker/Apple-Sonoma-Debug-AppleSilicon-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/cross-origin-opener-policy/tentative/noopener/coop-noopener-allow-popups.https-expected.txt
+++ /Volumes/Data/worker/Apple-Sonoma-Debug-AppleSilicon-WK2-Tests/build/layout-test-results/imported/w3c/web-platform-tests/html/cross-origin-opener-policy/tentative/noopener/coop-noopener-allow-popups.https-actual.txt
@@ -1,3 +1,5 @@
+
+Harness Error (TIMEOUT), message = null
 
 PASS
     Cross-Origin-Opener-Policy: noopener-allow-popups means that the opener
@@ -27,5 +29,5 @@
     Cross-Origin-Opener-Policy: noopener-allow-popups means that the opener
     has no access to the openee.
  6
-PASS noopener-allow-popups ensures that the opener cannot script the openee, even after a navigation: unsafe-none
+TIMEOUT noopener-allow-popups ensures that the opener cannot script the openee, even after a navigation: unsafe-none Test timed out

[Radar WebKit Bug Importer]

<rdar://problem/146161129>

[Karl Rackler]

On approximately 4/3/2025 at around 293155@main, the test started flaky, failing on release as well.

[EWS]

Test gardening commit 293724@main (6296d74c98f3): <https://commits.webkit.org/293724@main>

Reviewed commits have been landed. Closing PR #44109 and removing active labels.

[Yoav Weiss]

Belatedly looking into this. Apologies for the delay!

[Yoav Weiss]

Can we know the run times of the runs that are passing? I don't see any flakiness locally (with ~7s runtime for the test)

But given the fact that it's a timeout, it could be triggered by slower bots where the test hits its time limits.