Add Settings bluetooth page test

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview
  * 'settings-bluetooth-page' is the settings page for managing bluetooth
  *  properties and devices.
  *
  * Example:
  *    <core-animated-pages>
  *      <settings-bluetooth-page>
  *      </settings-bluetooth-page>
  *      ... other pages ...
  *    </core-animated-pages>
  *
  * @group Chrome Settings Elements
  * @element settings-bluetooth-page
  */
+
+/**
+ * Set this to provide a fake implementation for testing.
+ * @type {Bluetooth}
+ */
+var bluetoothApiForTest;
+
+/**
+ * Set this to provide a fake implementation for testing.
+ * @type {BluetoothPrivate}
+ */
+var bluetoothPrivateApiForTest;
+
 Polymer({
   is: 'settings-bluetooth-page',
 
   behaviors: [
     I18nBehavior,
   ],
 
   properties: {
     /** The current active route. */
     currentRoute: {
@@ skipping 46 matching lines @@
    */
   bluetoothDeviceUpdatedListener_: undefined,
 
   /**
    * Listener for chrome.bluetooth.onBluetoothDeviceRemoved events.
    * @type {function(!chrome.bluetooth.Device)|undefined}
    * @private
    */
   bluetoothDeviceRemovedListener_: undefined,
 
+  /** @override */
+  ready: function() {
+    if (bluetoothApiForTest)
+      this.bluetooth = bluetoothApiForTest;
+    if (bluetoothPrivateApiForTest)
+      this.bluetoothPrivate = bluetoothPrivateApiForTest;
+  },
 
   /** @override */
   attached: function() {
     this.bluetoothAdapterStateChangedListener_ =
         this.onBluetoothAdapterStateChanged_.bind(this);
     this.bluetooth.onAdapterStateChanged.addListener(
         this.bluetoothAdapterStateChangedListener_);
 
     this.bluetoothDeviceUpdatedListener_ =
         this.onBluetoothDeviceUpdated_.bind(this);
@@ skipping 128 matching lines @@
   /**
    * @param {!chrome.bluetooth.Device} device
    * @return {boolean} True if |device| should be shown in the device list.
    * @private
    */
   showDeviceInList_: function(device) {
     return !!device.paired || !!device.connected || !!device.connecting;
   },
 
   /**
-   * @param {!Array<!chrome.bluetooth.Device>} deviceList
+   * @param {Object} deviceListChanges
    * @return {boolean} True if deviceList is not empty.
    * @private
    */
-  haveDevices_: function(deviceList) { return !!deviceList.length; },
+  haveDevices_: function(deviceListChanges) {
+    return !!this.deviceList.length;
+  },
 
   /**
    * @param {number} selectedDevice
    * @return {boolean} True if a device is selected.
    * @private
    */
   haveSelectedDevice_: function(selectedDevice) { return selectedDevice >= 0; },
 
   /** @private */
   onConnectTap_: function() {
@@ skipping 36 matching lines @@
               'Error forgetting devce: ' + device.name + ': ' +
                   chrome.runtime.lastError.message);
         }
       });
     }
   },
 
   /** @private */
   onAddDeviceTap_: function() {}
 });