Bug 215281

Summary:	[GStreamer] imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiobuffer-interface/ctor-audiobuffer.html is flaky
Product:	WebKit	Reporter:	Lauro Moura <lmoura>
Component:	Web Audio	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bugs-noreply
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Lauro Moura 2020-08-07 11:02:57 PDT

imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiobuffer-interface/ctor-audiobuffer.html

Since r265233 (bug215096), this test is flaky failing due to occasionally the c2 context finishing to render before the c1 context, leading to an unexpected message order when compared to the baseline.

--- /home/buildbot/worker/gtk-linux-64-release-tests/build/layout-test-results/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiobuffer-interface/ctor-audiobuffer-expected.txt
+++ /home/buildbot/worker/gtk-linux-64-release-tests/build/layout-test-results/imported/w3c/web-platform-tests/webaudio/the-audio-api/the-audiobuffer-interface/ctor-audiobuffer-actual.txt
@@ -52,8 +52,8 @@
 PASS   buffer.getChannelData(3) threw IndexSizeError: "Index must be less than number of channels.". 
 PASS < [valid constructor] All assertions passed. (total 11 assertions) 
 PASS > [multiple contexts]  
+PASS   c2 result is identical to the array [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16...]. 
 PASS   c1 result is identical to the array [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16...]. 
-PASS   c2 result is identical to the array [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16...]. 
 PASS   AudioBuffer shared between two different contexts correctly 
 PASS < [multiple contexts] All assertions passed. (total 3 assertions) 
 FAIL # AUDIT TASK RUNNER FINISHED: 1 out of 7 tasks were failed. assert_true: expected true got false