[Webkit-unassigned] [Bug 168136] LayoutTest performance-api/performance-observer-periodic.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=168136

Shawn Roberts <sroberts at apple.com> changed:

           What    |Removed                     |Added
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                 CC|                            |sroberts at apple.com

--- Comment #4 from Shawn Roberts <sroberts at apple.com> ---
Test is now a flaky failure on iOS 12 Simulator as well.

Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=performance-api%2Fperformance-observer-periodic.html

First appearance was around r243337 but I was able to reproduce it with r242010 so it appears it's been flaky for as long as the other platforms. Gets about 1 failure in 1000 iterations, highly flaky. 

Reproducible with :

run-webkit-tests performance-api/performance-observer-periodic.html --ios-simulator --iterations 1000 -f

--- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/tests/cache-storage/cache-records-persistency.https-expected.txt
+++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/http/tests/cache-storage/cache-records-persistency.https-actual.txt
@@ -1,9 +1,7 @@

 PASS Cleaning existing caches 
-PASS Cache.put called twice with matching Requests - keys should remain the same - testing persistency 
+FAIL Cache.put called twice with matching Requests - keys should remain the same - testing persistency promise_test: Unhandled rejection with value: object "TypeError: undefined is not an object (evaluating 'result.text')"
 PASS Cleaning created caches 
-PASS Checking persistency of cache keys 
-PASS Checking persistency of response 
-PASS Checking persistency of response body 
-PASS Testing overriding of an existing cached record that is not in memory 
+FAIL Checking persistency of cache keys assert_equals: expected 1 but got 0
+FAIL Checking persistency of response assert_equals: Cache.put should store the response persistently expected "[object Response]" but got "[object Undefined]"

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