// 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 Mock implementations of the Closure HTML5 FileSystem wrapper * classes. These implementations are designed to be usable in any browser, so * they use none of the native FileSystem-related objects. * */ goog.provide('goog.testing.fs'); goog.require('goog.Timer'); goog.require('goog.array'); goog.require('goog.async.Deferred'); goog.require('goog.fs'); goog.require('goog.testing.fs.Blob'); goog.require('goog.testing.fs.FileSystem'); /** * Get a filesystem object. Since these are mocks, there's no difference between * temporary and persistent filesystems. * * @param {number} size Ignored. * @return {!goog.async.Deferred} The deferred * {@link goog.testing.fs.FileSystem}. */ goog.testing.fs.getTemporary = function(size) { var d = new goog.async.Deferred(); goog.Timer.callOnce( goog.bind(d.callback, d, new goog.testing.fs.FileSystem())); return d; }; /** * Get a filesystem object. Since these are mocks, there's no difference between * temporary and persistent filesystems. * * @param {number} size Ignored. * @return {!goog.async.Deferred} The deferred * {@link goog.testing.fs.FileSystem}. */ goog.testing.fs.getPersistent = function(size) { return goog.testing.fs.getTemporary(size); }; /** * Which object URLs have been granted for fake blobs. * @type {!Object.<boolean>} * @private */ goog.testing.fs.objectUrls_ = {}; /** * Create a fake object URL for a given fake blob. This can be used as a real * URL, and it can be created and revoked normally. * * @param {!goog.testing.fs.Blob} blob The blob for which to create the URL. * @return {string} The URL. */ goog.testing.fs.createObjectUrl = function(blob) { var url = blob.toDataUrl(); goog.testing.fs.objectUrls_[url] = true; return url; }; /** * Remove a URL that was created for a fake blob. * * @param {string} url The URL to revoke. */ goog.testing.fs.revokeObjectUrl = function(url) { delete goog.testing.fs.objectUrls_[url]; }; /** * Return whether or not a URL has been granted for the given blob. * * @param {!goog.testing.fs.Blob} blob The blob to check. * @return {boolean} Whether a URL has been granted. */ goog.testing.fs.isObjectUrlGranted = function(blob) { return (blob.toDataUrl()) in goog.testing.fs.objectUrls_; }; /** * Concatenates one or more values together and converts them to a fake blob. * * @param {...(string|!goog.testing.fs.Blob)} var_args The values that will make * up the resulting blob. * @return {!goog.testing.fs.Blob} The blob. */ goog.testing.fs.getBlob = function(var_args) { return new goog.testing.fs.Blob(goog.array.map(arguments, String).join('')); }; /** * Returns the string value of a fake blob. * * @param {!goog.testing.fs.Blob} blob The blob to convert to a string. * @param {string=} opt_encoding Ignored. * @return {!goog.async.Deferred} The deferred string value of the blob. */ goog.testing.fs.blobToString = function(blob, opt_encoding) { var d = new goog.async.Deferred(); goog.Timer.callOnce(goog.bind(d.callback, d, blob.toString())); return d; }; /** * Installs goog.testing.fs in place of the standard goog.fs. After calling * this, code that uses goog.fs should work without issue using goog.testing.fs. * * @param {!goog.testing.PropertyReplacer} stubs The property replacer for * stubbing out the original goog.fs functions. */ goog.testing.fs.install = function(stubs) { // Prevent warnings that goog.fs may get optimized away. It's true this is // unsafe in compiled code, but it's only meant for tests. var fs = goog.getObjectByName('goog.fs'); stubs.replace(fs, 'getTemporary', goog.testing.fs.getTemporary); stubs.replace(fs, 'getPersistent', goog.testing.fs.getPersistent); stubs.replace(fs, 'createObjectUrl', goog.testing.fs.createObjectUrl); stubs.replace(fs, 'revokeObjectUrl', goog.testing.fs.revokeObjectUrl); stubs.replace(fs, 'getBlob', goog.testing.fs.getBlob); stubs.replace(fs, 'blobToString', goog.testing.fs.blobToString); };