VulpesOS/gaia/apps/clock/test/unit/audio_manager_test.js

suite('Audio Manager', function() {
  'use strict';

  var AudioManager;
  var navigator_mozSettings = navigator.mozSettings;

  suiteSetup(function(done) {
    require(['mocks/mock_navigator_mozsettings'], function(mockSettings) {
      navigator.mozSettings = mockSettings;
      require(['audio_manager'], function(_AudioManager) {
        AudioManager = _AudioManager;
        done();
      });
    });
  });

  suiteTeardown(function() {
    navigator.mozSettings = navigator_mozSettings;
  });

  function assertVolumeEqual(actual, expected, message) {
    assert.equal(AudioManager.floatToSystemVolume(actual),
                 AudioManager.floatToSystemVolume(expected));
  }

  setup(function() {
    this.audio = AudioManager.createAudioPlayer();
  });

  teardown(function() {
    this.audio = null;
  });

  test('AudioPlayer lazy load', function() {
    assert.equal(this.audio._audio, null);
  });

  test('AudioPlayer does not throw when uninitialized', function() {
    this.audio.pause();
  });

  test('AudioPlayer loads sound with correct settings', function() {
    this.audio.playRingtone('some_ringtone.opus');
    assert.equal(this.audio._audio.loop, true);
    assert.ok(/some_ringtone.opus$/.test(this.audio._audio.src),
              'audio.src contains the ringtone');
    assertVolumeEqual(this.audio._audio.volume, AudioManager.getAlarmVolume());
  });

  test('Volume can be set and read from storage', function(done) {
    // use a callback to check asynchronously
    AudioManager.setAlarmVolume(0.5, function() {
      assertVolumeEqual(AudioManager.getAlarmVolume(), 0.5);
      done();
    });
    // also check synchronously
    assertVolumeEqual(AudioManager.getAlarmVolume(), 0.5);
  });

  test('Setting global alarm volume changes AudioPlayer', function() {
    AudioManager.setAlarmVolume(0.2);
    this.audio.playRingtone('some_ringtone.opus');
    assertVolumeEqual(this.audio._audio.volume, 0.2);
  });
});