Bug 239308

media/media-source/media-source-webm-vorbis-partial.html

This test is constantly failing on Monterey wk2. 

The diff is the exact same and we fixed this for Monterey back with https://bugs.webkit.org/show_bug.cgi?id=227559 This test started showing up in history on 3/17

history:
https://results.webkit.org/?suite=layout-tests&test=media%2Fmedia-source%2Fmedia-source-webm-vorbis-partial.html&version_name=Monterey

Diff:
--- /Volumes/Data/worker/monterey-debug-applesilicon-tests-wk2/build/layout-test-results/media/media-source/media-source-webm-vorbis-partial-expected.txt
+++ /Volumes/Data/worker/monterey-debug-applesilicon-tests-wk2/build/layout-test-results/media/media-source/media-source-webm-vorbis-partial-actual.txt
@@ -3,18 +3,9 @@
 EVENT(sourceopen)
 RUN(source.duration = loader.duration())
 RUN(sourceBuffer = source.addSourceBuffer(loader.type()))
+NotSupportedError: The operation is not supported.
 RUN(sourceBuffer.appendBuffer(loader.initSegment()))
-EVENT(update)
-Divide the first media segment in two.
-RUN(partial1 = loader.mediaSegment(0).slice(0, 280))
-RUN(partial2 = loader.mediaSegment(0).slice(280))
-Append a partial media segment.
-RUN(sourceBuffer.appendBuffer(partial1))
-EVENT(update)
-Complete the partial media segment.
-RUN(sourceBuffer.appendBuffer(partial2))
-EVENT(update)
-EXPECTED (sourceBuffer.buffered.length == '1') OK
-EXPECTED (sourceBuffer.buffered.end(0) > '1') OK
+TypeError: undefined is not an object (evaluating 'sourceBuffer.appendBuffer')
+Caught exception: "TypeError: undefined is not an object (evaluating 'element.addEventListener')" FAIL
 END OF TEST