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gaia/apps/system/test/unit/system_window_test.js

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+'use strict';
+/* global BaseModule */
+/* global MockAudioChannelController */
+/* global Service */
+
+requireApp('system/test/unit/mock_audio_channel_controller.js');
+requireApp('system/js/service.js');
+requireApp('system/js/base_module.js');
+requireApp('system/js/system_window.js');
+
+suite('system/SystemWindow', function() {
+  var subject;
+  var realACM;
+
+  setup(function() {
+    window.AudioChannelController = MockAudioChannelController;
+    navigator.mozAudioChannelManager = {
+      allowedAudioChannels: [
+        { name: 'normal' },
+        { name: 'notification' },
+        { name: 'telephony' }
+      ]
+    };
+    subject = BaseModule.instantiate('SystemWindow');
+    subject.start();
+  });
+
+  teardown(function() {
+    delete window.AudioChannelController;
+    navigator.mozAudioChannelManager = realACM;
+  });
+
+  test('The fake app window ID', function() {
+    assert.equal(subject.instanceID, 'systemAppID');
+  });
+
+  test('Get audio channels', function() {
+    var audioChannels = Service.query('getAudioChannels');
+    assert.equal(audioChannels.size, 3);
+    var names = audioChannels.keys();
+    assert.equal(names.next().value, 'normal');
+    assert.equal(names.next().value, 'notification');
+    assert.equal(names.next().value, 'telephony');
+  });
+});