Bug 232184

Summary:	Regression (r284610?): [ iOS BigSur wk2 ]imported/w3c/web-platform-tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html is a flaky failure
Product:	WebKit	Reporter:	ayumi_kojima
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	bfulgham, cdumez, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description ayumi_kojima 2021-10-22 16:03:21 PDT

imported/w3c/web-platform-tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html

Is flaky failing on iOS 15 and Big Sur wk2 Debug.

History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fcross-origin-opener-policy%2Fcoop-csp-sandbox.https.html

Result page: https://build.webkit.org/results/Apple-iOS-15-Simulator-Release-WK2-Tests/r284693%20(274)/results.html

Diff:

--- /Volumes/Data/worker/ios-simulator-15-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/html/cross-origin-opener-policy/coop-csp-sandbox.https-expected.txt
+++ /Volumes/Data/worker/ios-simulator-15-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/html/cross-origin-opener-policy/coop-csp-sandbox.https-actual.txt
@@ -1,5 +1,3 @@
-CONSOLE MESSAGE: Navigation was blocked by Cross-Origin-Opener-Policy
-CONSOLE MESSAGE: Navigation was blocked by Cross-Origin-Opener-Policy
 
 PASS CSP: sandbox allow-popups allow-scripts allow-same-origin; CSP sandboxed Cross-Origin-Opener-Policy popup should result in a network error
 PASS CSP: sandbox allow-popups allow-scripts; CSP sandboxed Cross-Origin-Opener-Policy popup should result in a network error

Comment 1 Radar WebKit Bug Importer 2021-10-22 16:03:53 PDT

<rdar://problem/84567378>

Comment 2 ayumi_kojima 2021-10-22 16:13:37 PDT

I was not able to reproduce the failure locally on iOS 15 sim using run-webkit-tests --ios-simulator --iterations 50 --exit-after-n-failures 1 imported/w3c/web-platform-tests/html/cross-origin-opener-policy/coop-csp-sandbox.https.html7

According to the history, it looks like the test started being flaky somewhere between  r284607 and r284625.

The changes in https://trac.webkit.org/changeset/284610/webkit seems to be related.

Comment 3 Chris Dumez 2021-10-22 16:20:40 PDT

Committed r284724 (243436@main): <https://commits.webkit.org/243436@main>