https://github.com/WWBN/AVideo/issues/8137

node_modules/videojs-contrib-quality-levels/test/quality-level-list.test.js

@@ -0,0 +1,123 @@
+import QUnit from 'qunit';
+import QualityLevelList from '../src/quality-level-list';
+import { representations } from './test-helpers';
+
+QUnit.module('QualityLevelList', {
+  beforeEach() {
+    this.qualityLevels = new QualityLevelList();
+    this.levels = representations;
+  }
+});
+
+QUnit.test('Properly adds QualityLevels to the QualityLevelList', function(assert) {
+  let addCount = 0;
+
+  this.qualityLevels.on('addqualitylevel', (event) => {
+    addCount++;
+  });
+
+  const expected0 = this.qualityLevels.addQualityLevel(this.levels[0]);
+
+  assert.equal(this.qualityLevels.length, 1, 'added quality level');
+  assert.equal(addCount, 1, 'emmitted addqualitylevel event');
+  assert.strictEqual(this.qualityLevels[0], expected0, 'can access quality level with index');
+
+  const expected1 = this.qualityLevels.addQualityLevel(this.levels[1]);
+
+  assert.equal(this.qualityLevels.length, 2, 'added quality level');
+  assert.equal(addCount, 2, 'emmitted addqualitylevel event');
+  assert.strictEqual(this.qualityLevels[1], expected1, 'can access quality level with index');
+
+  const expectedDuplicate = this.qualityLevels.addQualityLevel(this.levels[0]);
+
+  assert.equal(this.qualityLevels.length, 2, 'does not add duplicate quality level');
+  assert.equal(addCount, 2, 'no event emitted on dulicate');
+  assert.strictEqual(this.qualityLevels[3], undefined, 'no index property defined');
+  assert.strictEqual(this.qualityLevels[0], expected0, 'quality level unchanged');
+  assert.strictEqual(this.qualityLevels[0], expectedDuplicate, 'adding duplicate returns same reference');
+  assert.strictEqual(this.qualityLevels[1], expected1, 'quality level unchanged');
+});
+
+QUnit.test('Properly removes QualityLevels from the QualityLevelList', function(assert) {
+  let removeCount = 0;
+  const expected = [];
+
+  this.levels.forEach((qualityLevel) => {
+    expected.push(this.qualityLevels.addQualityLevel(qualityLevel));
+  });
+
+  this.qualityLevels.on('removequalitylevel', (event) => {
+    removeCount++;
+  });
+
+  // Mock an initial selected quality level
+  this.qualityLevels.selectedIndex_ = 2;
+
+  assert.equal(this.qualityLevels.length, 4, '4 initial quality levels');
+
+  let removed = this.qualityLevels.removeQualityLevel(expected[3]);
+
+  assert.equal(this.qualityLevels.length, 3, 'removed quality level');
+  assert.equal(removeCount, 1, 'emitted removequalitylevel event');
+  assert.strictEqual(removed, expected[3], 'returned removed level');
+  assert.notStrictEqual(this.qualityLevels[3], expected[3], 'nothing at index');
+
+  removed = this.qualityLevels.removeQualityLevel(expected[1]);
+
+  assert.equal(this.qualityLevels.length, 2, 'removed quality level');
+  assert.equal(removeCount, 2, 'emitted removequalitylevel event');
+  assert.strictEqual(removed, expected[1], 'returned removed level');
+  assert.notStrictEqual(this.qualityLevels[1], expected[1], 'quality level not at index');
+  assert.strictEqual(
+    this.qualityLevels[this.qualityLevels.selectedIndex],
+    expected[2],
+    'selected index properly adjusted on quality level removal'
+  );
+
+  removed = this.qualityLevels.removeQualityLevel(expected[3]);
+
+  assert.equal(this.qualityLevels.length, 2, 'no quality level removed if not found');
+  assert.equal(removed, null, 'returned null when nothing removed');
+  assert.equal(removeCount, 2, 'no event emitted when quality level not found');
+
+  removed = this.qualityLevels.removeQualityLevel(expected[2]);
+
+  assert.equal(this.qualityLevels.length, 1, 'quality level removed');
+  assert.equal(removeCount, 3, 'emitted removequalitylevel event');
+  assert.strictEqual(removed, expected[2], 'returned removed level');
+  assert.equal(this.qualityLevels.selectedIndex, -1, 'selectedIndex set to -1 when removing selected quality level');
+});
+
+QUnit.test('can get quality level by id', function(assert) {
+  const expected = [];
+
+  this.levels.forEach((qualityLevel) => {
+    expected.push(this.qualityLevels.addQualityLevel(qualityLevel));
+  });
+
+  assert.strictEqual(
+    this.qualityLevels.getQualityLevelById('0'),
+    expected[0],
+    'found quality level with id "0"'
+  );
+  assert.strictEqual(
+    this.qualityLevels.getQualityLevelById('1'),
+    expected[1],
+    'found quality level with id "1"'
+  );
+  assert.strictEqual(
+    this.qualityLevels.getQualityLevelById('2'),
+    expected[2],
+    'found quality level with id "2"'
+  );
+  assert.strictEqual(
+    this.qualityLevels.getQualityLevelById('3'),
+    expected[3],
+    'found quality level with id "3"'
+  );
+  assert.strictEqual(
+    this.qualityLevels.getQualityLevelById('4'),
+    null,
+    'no quality level with id "4" found'
+  );
+});