Bug 227998 – [Mac OS & iOS] imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html is a flaky failure

• Component: New Bugs
• Status: RESOLVED FIXED

imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html 

Is flaky failing on Mac OS and iOS 14 E Simulator wk2
 
History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fthe-embed-element%2Fembed-network-error.sub.html

I was able to reproduce the failure on my local machine using run-webkit-tests imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html --iterations 500 --exit-after-n-failures 2 -f

I was not able to reproduce the failure on iOS using:

run-webkit-tests imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html --iterations 500 --exit-after-n-failures 2 -f --ios-simulator

run-webkit-tests imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html --iterations 50 --exit-after-n-failures 2 -f --ios-simulator --child-process=4

Diff: 

--- /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub-expected.txt
+++ /Volumes/Data/worker/bigsur-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub-actual.txt
@@ -1,6 +1,6 @@
+Blocked access to external URL http://nonexistent.localhost/
 Blocked access to external URL http://nonexistent.localhost/
 CONSOLE MESSAGE: Refused to display 'http://localhost:8800/html/semantics/embedded-content/resources/not-embeddable.html' in a frame because it set 'X-Frame-Options' to 'deny'.
-Blocked access to external URL http://nonexistent.localhost/
 CONSOLE MESSAGE: Refused to display 'http://localhost:8800/html/semantics/embedded-content/resources/not-embeddable.html' in a frame because it set 'X-Frame-Options' to 'deny'.

[Radar WebKit Bug Importer]

<rdar://problem/80643579>

It appears that the test has been failing since it was introduced at r269957

Created attachment 433621 [details]
Update Test Expectations

[Truitt Savell]

Comment on attachment 433621 [details]
Update Test Expectations

Clearing flags on attachment: 433621

Committed r279959 (239702@main): <https://commits.webkit.org/239702@main>

[Chris Dumez]

Pull request: https://github.com/WebKit/WebKit/pull/50337

[EWS]

Committed 299613@main (c527f0b02e5f): <https://commits.webkit.org/299613@main>

Reviewed commits have been landed. Closing PR #50337 and removing active labels.