Bug 210486

Summary:	[MSE] LayoutTests/imported/w3c/web-platform-tests/media-source/mediasource-correct-frames-after-reappend.html is flaky
Product:	WebKit	Reporter:	Diego Pino <dpino>
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Diego Pino 2020-04-14 04:37:01 PDT

The test has been very flaky since many builds ago. On a flaky failure the diff looks like:

Source: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r260030%20(13319)/imported/w3c/web-platform-tests/media-source/mediasource-correct-frames-after-reappend-diff.txt

--- /home/slave/webkitgtk/gtk-linux-64-release-tests/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-correct-frames-after-reappend-expected.txt
+++ /home/slave/webkitgtk/gtk-linux-64-release-tests/build/layout-test-results/imported/w3c/web-platform-tests/media-source/mediasource-correct-frames-after-reappend-actual.txt
@@ -1,3 +1,7 @@
+CONSOLE MESSAGE: Error: assert_true: The note being played matches the expected one (boxes lit: 1, 466.2 Hz), found ~441.4 Hz expected true got false
+CONSOLE MESSAGE: Error: assert_true: The note being played matches the expected one (boxes lit: 2, 493.9 Hz), found ~441.4 Hz expected true got false
+
+Harness Error (FAIL), message = Error: assert_true: The note being played matches the expected one (boxes lit: 2, 493.9 Hz), found ~441.4 Hz expected true got false
 
 PASS Test the expected frames are played at the expected times, even in presence of reappends 

If the error is not relevant the error message can be skipped with DumpJSConsoleLogInStdErr.