playlist_test.js
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/* Tests for the playlist utilities */
(function(window, videojs) {
'use strict';
var Playlist = videojs.Hls.Playlist;
module('Playlist Utilities');
test('total duration for live playlists is Infinity', function() {
var duration = Playlist.duration({
segments: [{
duration: 4,
uri: '0.ts'
}]
});
equal(duration, Infinity, 'duration is infinity');
});
test('interval duration accounts for media sequences', function() {
var duration = Playlist.duration({
mediaSequence: 10,
endList: true,
segments: [{
duration: 10,
uri: '10.ts'
}, {
duration: 10,
uri: '11.ts'
}, {
duration: 10,
uri: '12.ts'
}, {
duration: 10,
uri: '13.ts'
}]
}, 0, 14);
equal(duration, 14 * 10, 'duration includes dropped segments');
});
test('calculates seekable time ranges from the available segments', function() {
var playlist = {
mediaSequence: 0,
segments: [{
duration: 10,
uri: '0.ts'
}, {
duration: 10,
uri: '1.ts'
}],
endList: true
}, seekable = Playlist.seekable(playlist);
equal(seekable.length, 1, 'there are seekable ranges');
equal(seekable.start(0), 0, 'starts at zero');
equal(seekable.end(0), Playlist.duration(playlist), 'ends at the duration');
});
test('master playlists have empty seekable ranges', function() {
var seekable = Playlist.seekable({
playlists: [{
uri: 'low.m3u8'
}, {
uri: 'high.m3u8'
}]
});
equal(seekable.length, 0, 'no seekable ranges from a master playlist');
});
test('seekable end is three target durations from the actual end of live playlists', function() {
var seekable = Playlist.seekable({
mediaSequence: 0,
segments: [{
duration: 7,
uri: '0.ts'
}, {
duration: 10,
uri: '1.ts'
}, {
duration: 10,
uri: '2.ts'
}, {
duration: 10,
uri: '3.ts'
}]
});
equal(seekable.length, 1, 'there are seekable ranges');
equal(seekable.start(0), 0, 'starts at zero');
equal(seekable.end(0), 7, 'ends three target durations from the last segment');
});
test('adjusts seekable to the live playlist window', function() {
var seekable = Playlist.seekable({
targetDuration: 10,
mediaSequence: 7,
segments: [{
uri: '8.ts'
}, {
uri: '9.ts'
}, {
uri: '10.ts'
}, {
uri: '11.ts'
}]
});
equal(seekable.length, 1, 'there are seekable ranges');
equal(seekable.start(0), 10 * 7, 'starts at the earliest available segment');
equal(seekable.end(0), 10 * 8, 'ends three target durations from the last available segment');
});
test('seekable end accounts for non-standard target durations', function() {
var seekable = Playlist.seekable({
targetDuration: 2,
mediaSequence: 0,
segments: [{
duration: 2,
uri: '0.ts'
}, {
duration: 2,
uri: '1.ts'
}, {
duration: 1,
uri: '2.ts'
}, {
duration: 2,
uri: '3.ts'
}, {
duration: 2,
uri: '4.ts'
}]
});
equal(seekable.start(0), 0, 'starts at the earliest available segment');
equal(seekable.end(0),
9 - (2 * 3),
'allows seeking no further than three target durations from the end');
});
})(window, window.videojs);