Layout Test security/contentSecurityPolicy/plugins-types-allows-youtube-plugin-replacement.html is flaky

• Component: New Bugs
• Status: NEW ---

[Matt Lewis]

security/contentSecurityPolicy/plugins-types-allows-youtube-plugin-replacement.html is a flaky failure.

According to the flakiness dashboard, the test has been failing intermittently on Sierra WK2 Release but has recently failed once on El Capitan WK2 Debug.
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=security%2FcontentSecurityPolicy%2Fplugins-types-allows-youtube-plugin-replacement.html

This does not appear to be a recent regression.

This does not appear to be a recent regression. First failure on the board for Sierra was on 6/8/2017: https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20(Tests)/builds/2086
The first El Capitan Failure was on 6/17/2017: https://build.webkit.org/builders/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/builds/1795

https://build.webkit.org/results/Apple%20Sierra%20Release%20WK2%20(Tests)/r218714%20(2468)/results.html
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20(Tests)/builds/2468

Diff:
--- /Volumes/Data/slave/sierra-release-tests-wk2/build/layout-test-results/security/contentSecurityPolicy/plugins-types-allows-youtube-plugin-replacement-expected.txt
+++ /Volumes/Data/slave/sierra-release-tests-wk2/build/layout-test-results/security/contentSecurityPolicy/plugins-types-allows-youtube-plugin-replacement-actual.txt
@@ -1,2 +1 @@
-Blocked access to external URL https://www.youtube.com/embed/UF8uR6Z6KLc
-
+

[Matt Lewis]

I was able to reproduce this locally on Sierra with:
run-webkit-tests security/contentSecurityPolicy/plugins-types-allows-youtube-plugin-replacement.html --no-retry-failure --iterations=500 -f -g

[Matt Lewis]

Marked test as flaky:
https://trac.webkit.org/changeset/225886/webkit

[Radar WebKit Bug Importer]

<rdar://problem/42793011>