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

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+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);
+  });
+});