Files.app: Add the MockDirectoryEntry class.

chrome/test/data/file_manager/unit_tests/mocks/mock_entry.js

+// Copyright 2014 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.
+
+/**
+ * Mock class for FileEntry.
+ *
+ * @param {string} volumeId Id of the volume containing the entry.
+ * @param {string} fullPath Full path for the entry.
+ * @constructor
+ */
+function MockFileEntry(volumeId, fullPath) {
+  this.volumeId = volumeId;
+  this.fullPath = fullPath;
+}
+
+/**
+ * Returns fake URL.
+ *
+ * @return {string} Fake URL.
+ */
+MockFileEntry.prototype.toURL = function() {
+  return 'filesystem:' + this.volumeId + this.fullPath;
+};
+
+/**
+ * Mock class for DirectoryEntry.
+ *
+ * @param {string} volumeId Id of the volume containing the entry.
+ * @param {string} fullPath Full path for the entry.
+ * @param {Object.<String, MockFileEntry|MockDirectoryEntry>} contents Map of
+ *     path and MockEntry contained in the directory.
+ * @constructor
+ */
+function MockDirectoryEntry(volumeId, fullPath, contents) {
+  this.contents_ = contents;
+}
+
+/**
+ * Returns a file under the directory.
+ *
+ * @param {string} path Path.
+ * @param {Object} option Option.
+ * @param {callback(MockFileEntry)} successCallback Success callback.
+ * @param {callback(Object)} failureCallback Failure callback;
+ */
+MockDirectoryEntry.prototype.getFile = function(
+    path, option, successCallback, failureCallback) {
+  if (!this.contents_[path])
+    failureCallback({name: util.FileError.NOT_FOUND_ERR});
+  else if (!(this.contents_[path] instanceof MockFileEntry))
+    failureCallback({name: util.FileError.TYPE_MISMATCH_ERR});
+  else
+    successCallback(this.contents_[path]);
+};
+
+/**
+ * Returns a directory under the directory.
+ *
+ * @param {string} path Path.
+ * @param {Object} option Option.
+ * @param {callback(MockDirectoryEntry)} successCallback Success callback.
+ * @param {callback(Object)} failureCallback Failure callback;
+ */
+MockDirectoryEntry.prototype.getDirectory =
+    function(path, option, successCallback, failureCallback) {
+  if (!this.contents_[path])
+    failureCallback({name: util.FileError.NOT_FOUND_ERR});
+  else if (!(this.contents_[path] instanceof MockDirectoryEntry))
+    failureCallback({name: util.FileError.TYPE_MISMATCH_ERR});
+  else
+    successCallback(this.contents_[path]);
+};