File: track-remove-insert-ready-state.html

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<!DOCTYPE html>
<title>Attaching a media element again to the document, having a child track that failed loading doesn't block video from playing</title>
<script src="/common/media.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
    <track src="resources/no-webvtt.vtt" kind="captions" default>
    <script>
    async_test(function(t) {
        var video = document.querySelector('video');
        video.src = getVideoURI('/media/test');
        video.oncanplaythrough = t.step_func(canplaythrough);

        function canplaythrough() {
            video.oncanplaythrough = null;
            var track = document.querySelector('track');

            // Track should have error as ready state.
            assert_equals(track.readyState, HTMLTrackElement.ERROR);

            // Remove the video element from body.
            document.body.removeChild(video);

            // Reset the video src attribute to re-trigger resource selection for tracks.
            video.src = getVideoURI('/media/test');

            // Append the video element back to the body.
            document.body.appendChild(video);

            assert_equals(track.readyState, HTMLTrackElement.ERROR);

            video.onplaying = t.step_func_done();
            video.play();
            // The video should start playing.
        }
    });
    </script>
</video>