Bug 219366

Summary:	REGRESSION: imported/w3c/web-platform-tests/streams/transform-streams/terminate.any.html is a flaky failure
Product:	WebKit	Reporter:	Truitt Savell <tsavell>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	cdumez, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Truitt Savell 2020-11-30 13:11:57 PST

imported/w3c/web-platform-tests/streams/transform-streams/terminate.any.html

This test began flaking recently. I am able to reproduce the error with command:
run-webkit-tests --iterations 2000 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --debug-rwt-logging --no-retry --force --no-build -f imported/w3c/web-platform-tests/streams/transform-streams/terminate.any.html

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fstreams%2Ftransform-streams%2Fterminate.any.html

Diff:
--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/streams/transform-streams/terminate.any-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/streams/transform-streams/terminate.any-actual.txt
@@ -1,4 +1,3 @@
-CONSOLE MESSAGE: Unhandled Promise Rejection: TypeError: the stream has been terminated
 CONSOLE MESSAGE: Unhandled Promise Rejection: TypeError: the stream has been terminated
 
 Harness Error (FAIL), message = Unhandled rejection: the stream has been terminated

Comment 1 Radar WebKit Bug Importer 2020-11-30 13:13:05 PST

<rdar://problem/71819641>

Comment 2 Truitt Savell 2020-11-30 13:49:38 PST

Marked this test as flaky in https://trac.webkit.org/changeset/270263/webkit

Comment 3 Chris Dumez 2020-12-01 12:34:06 PST

Committed r270324: <https://trac.webkit.org/changeset/270324>