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<!DOCTYPE html>
<title>HTMLTrackElement 'src' attribute mutations</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
<track src="resources/settings.vtt" default>
<script>
async_test(function(t) {
var cues = null;
var testTrack = document.querySelector("track");
var stage = 0;
function step_onLoad() {
switch (stage) {
case 0:
cues = testTrack.track.cues;
assert_equals(testTrack.readyState, HTMLTrackElement.LOADED, "readyState after first loading of the track");
assert_equals(cues.length, 4, "Number of cues after first loading of the track");
assert_equals(cues[cues.length-1].text, 'I said Bear is coming now!!!! Tab separators.', "Last cue content check");
++stage;
testTrack.src = "resources/entities.vtt";
// CuesList will be cleared in a microtask. Spec claims that this should happen immediately,
// but all known implementations are doing this asynchronously.
assert_equals(cues.length, 4, "Number of cues immediately after 'src' mutation with the new URL");
break;
case 1:
assert_equals(testTrack.readyState, HTMLTrackElement.LOADED), "readyState after loading of the second track";
assert_equals(cues, testTrack.track.cues, ".cues object are the same after 'src' attr mutation");
assert_equals(cues.length, 7, "Number of cues after loading of the second track");
assert_equals(cues[cues.length-1].text, 'This & is parsed to the same as &.', "Last cue content check");
++stage;
testTrack.src = "resources/settings.vtt";
break;
case 2:
assert_equals(testTrack.readyState, HTMLTrackElement.LOADED, "readyState after after loading of the first track again");
assert_equals(cues[cues.length-1].text, 'I said Bear is coming now!!!! Tab separators.', "Last cue content check");
assert_equals(cues, testTrack.track.cues, ".cues object are the same after 'src' attr mutation");
assert_equals(cues.length, 4, "Number of cues after loading of the first track");
++stage;
testTrack.src = "resources/settings.vtt";
// This should not raise onLoad or onError event, so we'll wait for it for some time
t.step_timeout(t.step_func_done(function() {
assert_equals(testTrack.readyState, HTMLTrackElement.LOADED, "readyState after changing 'src' to the same value");
assert_equals(cues, testTrack.track.cues, ".cues object are the same after 'src' attr mutation");
assert_equals(cues.length, 4, "Number of cues after changing 'src' to the same value");
}, 100));
break;
case 3:
assert_unreached("'load' event should not fire, stage = " + stage);
break;
}
}
testTrack.onload = t.step_func(step_onLoad);
testTrack.onerror = t.unreached_func("'error' event should not fire");
});
</script>
</video>
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