| // Copyright 2011 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview Provides a JS storage class implementing the HTML5 Storage |
| * interface. |
| */ |
| |
| |
| goog.require('goog.structs.Map'); |
| |
| |
| goog.provide('goog.testing.MockStorage'); |
| |
| |
| |
| /** |
| * A JS storage instance, implementing the HTML5 Storage interface. |
| * See http://www.w3.org/TR/webstorage/ for details. |
| * |
| * @constructor |
| * @implements {Storage} |
| * @final |
| */ |
| goog.testing.MockStorage = function() { |
| /** |
| * The underlying storage object. |
| * @type {goog.structs.Map} |
| * @private |
| */ |
| this.store_ = new goog.structs.Map(); |
| |
| /** |
| * The number of elements in the storage. |
| * @type {number} |
| */ |
| this.length = 0; |
| }; |
| |
| |
| /** |
| * Sets an item to the storage. |
| * @param {string} key Storage key. |
| * @param {*} value Storage value. Must be convertible to string. |
| * @override |
| */ |
| goog.testing.MockStorage.prototype.setItem = function(key, value) { |
| this.store_.set(key, String(value)); |
| this.length = this.store_.getCount(); |
| }; |
| |
| |
| /** |
| * Gets an item from the storage. The item returned is the "structured clone" |
| * of the value from setItem. In practice this means it's the value cast to a |
| * string. |
| * @param {string} key Storage key. |
| * @return {?string} Storage value for key; null if does not exist. |
| * @override |
| */ |
| goog.testing.MockStorage.prototype.getItem = function(key) { |
| var val = this.store_.get(key); |
| // Enforce that getItem returns string values. |
| return (val != null) ? /** @type {string} */ (val) : null; |
| }; |
| |
| |
| /** |
| * Removes and item from the storage. |
| * @param {string} key Storage key. |
| * @override |
| */ |
| goog.testing.MockStorage.prototype.removeItem = function(key) { |
| this.store_.remove(key); |
| this.length = this.store_.getCount(); |
| }; |
| |
| |
| /** |
| * Clears the storage. |
| * @override |
| */ |
| goog.testing.MockStorage.prototype.clear = function() { |
| this.store_.clear(); |
| this.length = 0; |
| }; |
| |
| |
| /** |
| * Returns the key at the given index. |
| * @param {number} index The index for the key. |
| * @return {?string} Key at the given index, null if not found. |
| * @override |
| */ |
| goog.testing.MockStorage.prototype.key = function(index) { |
| return this.store_.getKeys()[index] || null; |
| }; |