| // 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 Fake implementation of chrome.settingsPrivate for testing. */ |
| cr.define('settings', function() { |
| /** |
| * Creates a deep copy of the object. |
| * @param {!Object} obj |
| * @return {!Object} |
| */ |
| function deepCopy(obj) { |
| return JSON.parse(JSON.stringify(obj)); |
| } |
| |
| /** |
| * Fake of chrome.settingsPrivate API. Use by setting |
| * CrSettingsPrefs.deferInitialization to true, then passing a |
| * FakeSettingsPrivate to settings-prefs#initialize(). |
| * @constructor |
| * @param {Array<!settings.FakeSettingsPrivate.Pref>=} opt_initialPrefs |
| * @implements {SettingsPrivate} |
| */ |
| function FakeSettingsPrivate(opt_initialPrefs) { |
| this.prefs = {}; |
| |
| if (!opt_initialPrefs) |
| return; |
| for (const pref of opt_initialPrefs) |
| this.addPref_(pref.type, pref.key, pref.value); |
| } |
| |
| FakeSettingsPrivate.prototype = { |
| // chrome.settingsPrivate overrides. |
| onPrefsChanged: new FakeChromeEvent(), |
| |
| getAllPrefs: function(callback) { |
| // Send a copy of prefs to keep our internal state private. |
| const prefs = []; |
| for (const key in this.prefs) |
| prefs.push(deepCopy(this.prefs[key])); |
| |
| // Run the callback asynchronously to test that the prefs aren't actually |
| // used before they become available. |
| setTimeout(callback.bind(null, prefs)); |
| }, |
| |
| setPref: function(key, value, pageId, callback) { |
| const pref = this.prefs[key]; |
| assertNotEquals(undefined, pref); |
| assertEquals(typeof value, typeof pref.value); |
| assertEquals(Array.isArray(value), Array.isArray(pref.value)); |
| |
| if (this.failNextSetPref_) { |
| callback(false); |
| this.failNextSetPref_ = false; |
| return; |
| } |
| assertNotEquals(true, this.disallowSetPref_); |
| |
| const changed = JSON.stringify(pref.value) != JSON.stringify(value); |
| pref.value = deepCopy(value); |
| callback(true); |
| |
| // Like chrome.settingsPrivate, send a notification when prefs change. |
| if (changed) |
| this.sendPrefChanges([{key: key, value: deepCopy(value)}]); |
| }, |
| |
| getPref: function(key, callback) { |
| const pref = this.prefs[key]; |
| assertNotEquals(undefined, pref); |
| callback(deepCopy(pref)); |
| }, |
| |
| // Functions used by tests. |
| |
| /** Instructs the API to return a failure when setPref is next called. */ |
| failNextSetPref: function() { |
| this.failNextSetPref_ = true; |
| }, |
| |
| /** Instructs the API to assert (fail the test) if setPref is called. */ |
| disallowSetPref: function() { |
| this.disallowSetPref_ = true; |
| }, |
| |
| allowSetPref: function() { |
| this.disallowSetPref_ = false; |
| }, |
| |
| /** |
| * Notifies the listeners of pref changes. |
| * @param {!Object<{key: string, value: *}>} changes |
| */ |
| sendPrefChanges: function(changes) { |
| const prefs = []; |
| for (const change of changes) { |
| const pref = this.prefs[change.key]; |
| assertNotEquals(undefined, pref); |
| pref.value = change.value; |
| prefs.push(deepCopy(pref)); |
| } |
| this.onPrefsChanged.callListeners(prefs); |
| }, |
| |
| // Private methods for use by the fake API. |
| |
| /** |
| * @param {!chrome.settingsPrivate.PrefType} type |
| * @param {string} key |
| * @param {*} value |
| */ |
| addPref_: function(type, key, value) { |
| this.prefs[key] = { |
| type: type, |
| key: key, |
| value: value, |
| }; |
| }, |
| }; |
| |
| return {FakeSettingsPrivate: FakeSettingsPrivate}; |
| }); |
| |
| /** |
| * @type {Array<{key: string, |
| * type: chrome.settingsPrivate.PrefType, |
| * values: !Array<*>}>} |
| */ |
| settings.FakeSettingsPrivate.Pref; |