<!DOCTYPE html>
<html>
<title>Test MSE teardown on media element error before HAVE_METADATA</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mediasource-util.js"></script>
<body>
<script>
// This is a Chromium-specific scenario test for https://crbug.com/1204656.
// It causes a pipeline error before reaching HAVE_MEDATA with media element
// having some media tracks.
// The cleanup may involve both the media element and the MSE SourceBuffers
// attempting removal of the same media tracks from the element's track lists.
// To cause this kind of pipeline error reliably, attempts at using crafted
// media didn't succeed in obtaining issue repro because once preroll has
// started, the media element has already been notified of HAVE_METADATA, or
// races at best. So instead, endOfStream() before ChunkDemuxer has finished
// initialization, but after it has processed an initialization segment for
// one of multiple SourceBuffers, should cause the pipeline error.
mediasource_testafterdataloaded(
function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer,
mediaData)
{
test.failOnEvent(mediaElement, 'loadedmetadata');
// Obtain a second SourceBuffer on mediaSource that will never be
// appended to, preventing ChunkDemuxer from completing initialization.
var spareSourceBuffer = mediaSource.addSourceBuffer(segmentInfo.type);
var initSegment =
MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
assert_false(sourceBuffer.updating, "sourceBuffer not updating");
sourceBuffer.appendBuffer(initSegment);
assert_true(sourceBuffer.updating, "sourceBuffer updating");
test.expectEvent(sourceBuffer, "updateend");
test.waitForExpectedEvents(function()
{
assert_false(sourceBuffer.updating, "sourceBuffer not updating");
assert_less_than(mediaElement.readyState, HTMLMediaElement.HAVE_METADATA,
"mediaElement not yet at HAVE_METADATA");
test.expectEvent(mediaElement, "error");
mediaSource.endOfStream();
});
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.error != null, "mediaElement has error");
assert_equals(mediaSource.readyState, "closed", "mediaSource is closed");
test.done();
});
}, "Test MSE teardown on media element error before HAVE_METADATA",
{ allow_media_element_error: true } );
</script>
</body>
</html>
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