1098200 - race conditions in SourceBuffer-abort*.html tests lead to intermittent unexpected InvalidStateError when both webm and mp4 are enabled

Status: RESOLVED FIXED

(Core :: Audio/Video, defect)

Description

[Karl Tomlinson (:karlt)]

SourceBuffer-abort.html SourceBuffer-abort-readState.html
SourceBuffer-abort-removed.html, and SourceBuffer-abort-updating.html run two subtests concurrently.  If both webm and
mp4 are supported, each test modifies the same video.src.  When the
value of overwritten before the test completes the MediaSource is no longer
open and mediaSource.addSourceBuffer(mime) fails with
JavaScript error: http://web-platform.test:8000/media-source/SourceBuffer-abort-updating.html, line 51: InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable
which leads to one subtest TIMEOUT and ERROR for the parent test.

I need to see that this is fixed upstream, but for now we need to disable one subtest in each test to avoid the race conditions.

Comment 1

[:Ms2ger (he/him; ⌚ UTC+1/+2)]

https://github.com/w3c/web-platform-tests/pull/1385