Bug 179643 - [mac-wk1] Layout Test media/W3C/audio/networkState/networkState_during_loadstart.html is flaky
Summary: [mac-wk1] Layout Test media/W3C/audio/networkState/networkState_during_loadst...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-11-13 16:31 PST by Matt Lewis
Modified: 2018-01-18 20:56 PST (History)
3 users (show)

See Also:


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Description Matt Lewis 2017-11-13 16:31:35 PST
media/W3C/audio/networkState/networkState_during_loadstart.html is a flaky failure on macOS WK1 testers according to the flakiness dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2FW3C%2Faudio%2FnetworkState%2FnetworkState_during_loadstart.html

build:
https://build.webkit.org/results/Apple%20Sierra%20Release%20WK1%20(Tests)/r224776%20(6083)/results.html
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK1%20(Tests)/builds/6083

I was able to reproduce the flake with run-webkit-test --no-retry-failures --verbose media/W3C/audio/networkState/networkState_during_loadstart.html --iterations=100 --debug -f -g -1

diff:
--- /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/media/W3C/audio/networkState/networkState_during_loadstart-expected.txt
+++ /Volumes/Data/slave/sierra-release-tests-wk1/build/layout-test-results/media/W3C/audio/networkState/networkState_during_loadstart-actual.txt
@@ -3,7 +3,7 @@
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS "2" is "2"
+FAIL "1" should be 2. Was 1.
 
 TEST COMPLETE
 spec reference
Comment 1 Matt Lewis 2017-11-13 16:41:57 PST
I was able to reproduce the flaky failure as far back as
Comment 2 Matt Lewis 2017-11-13 16:43:53 PST
(In reply to Matt Lewis from comment #1)
> I was able to reproduce the flaky failure as far back as
revision https://trac.webkit.org/changeset/224340/webkit but I believe it would go back further.

the test became much more flaky after the revisions:

https://trac.webkit.org/changeset/224348/webkit
https://trac.webkit.org/changeset/224347/webkit

there is no archive of r224347 so I'm unable to determine between the two.
Comment 3 Ryan Haddad 2017-11-13 16:48:38 PST
This is also seen with media/W3C/video/networkState/networkState_during_loadstart.html
https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=media%2FW3C%2Fvideo%2FnetworkState%2FnetworkState_during_loadstart.html
Comment 4 Ryan Haddad 2018-01-18 20:56:00 PST
Marked test as flaky in https://trac.webkit.org/changeset/227183/webkit