Bug 187857

Summary: [ MacOS ] Layout Test imported/w3c/web-platform-tests/notifications/event-onshow.html is flaky
Product: WebKit Reporter: Truitt Savell <tsavell>
Component: Tools / TestsAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: lforschler, realdawei, ryanhaddad
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Truitt Savell 2018-07-20 08:53:32 PDT
The following layout test is flaky on MacOS

imported/w3c/web-platform-tests/notifications/event-onshow.html

Probable cause:

The failure is Highly intermittent. Happening maybe every 20 to 50 runs. Test is timing out from the test harness. If the test doesn't finish immediately it will timeout in around 27-30 seconds. I have not reproduced issue yet. 

--- /Volumes/Data/slave/highsierra-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/notifications/event-onshow-expected.txt
+++ /Volumes/Data/slave/highsierra-release-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/notifications/event-onshow-actual.txt
@@ -1,4 +1,6 @@
+
+Harness Error (TIMEOUT), message = null
 
 PASS Checked test prerequisites. 
-PASS Invoked the onshow event handler. 
+NOTRUN Invoked the onshow event handler. 
 

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fnotifications%2Fevent-onshow.html