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<!DOCTYPE html>
<title>Text track cue order</title>
<link rel="help" href="https://html.spec.whatwg.org/#text-track-cue-order">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function concat_cuetext(cues) {
return Array.prototype.reduce.call(cues, function(acc, value) {
return acc + value.text;
}, "");
}
setup(function() {
window.video = document.createElement('video');
});
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(8, 9, '1'));
track.addCue(new VTTCue(4, 5, '2'));
track.addCue(new VTTCue(2, 3, '3'));
assert_equals(concat_cuetext(track.cues), '321');
}, document.title + ', decreasing start times.');
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(2, 9, '1'));
track.addCue(new VTTCue(2, 3, '2'));
track.addCue(new VTTCue(2, 5, '3'));
assert_equals(concat_cuetext(track.cues), '132');
}, document.title + ', equal start times varying end times.');
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(2, 3, '1'));
track.addCue(new VTTCue(2, 3, '2'));
track.addCue(new VTTCue(2, 3, '3'));
assert_equals(concat_cuetext(track.cues), '123');
}, document.title + ', equal start and end times.');
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(2, 5, '1'));
track.addCue(new VTTCue(2, 5, '2'));
track.addCue(new VTTCue(2, 5, '3'));
assert_equals(concat_cuetext(track.cues), '123', 'initial order');
let cue = track.cues[0];
track.removeCue(cue);
assert_equals(concat_cuetext(track.cues), '23', '"1" removed');
track.addCue(cue);
assert_equals(concat_cuetext(track.cues), '231', '"1" reinserted');
}, document.title + ', after re-insertion.');
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(2, 5, '1'));
track.addCue(new VTTCue(2, 5, '2'));
track.addCue(new VTTCue(2, 5, '3'));
assert_equals(concat_cuetext(track.cues), '123', 'initial order');
track.cues[0].startTime = 4;
assert_equals(concat_cuetext(track.cues), '231', '"1" moved last');
track.cues[2].startTime = 2;
assert_equals(concat_cuetext(track.cues), '123', '"1" moved first');
}, document.title + ', equal start and end times with startTime mutations.');
test(function() {
let track = video.addTextTrack('subtitles');
track.addCue(new VTTCue(2, 5, '1'));
track.addCue(new VTTCue(2, 5, '2'));
track.addCue(new VTTCue(2, 5, '3'));
assert_equals(concat_cuetext(track.cues), '123', 'initial order');
track.cues[2].endTime = 9;
assert_equals(concat_cuetext(track.cues), '312', '"3" moved first');
track.cues[1].endTime = 3;
assert_equals(concat_cuetext(track.cues), '321', '"1" moved last');
}, document.title + ', equal start and end times with endTime mutations.');
</script>
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