[Files.app] Add an unittest of NavigationListModel

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

Index: chrome/test/data/file_manager/unit_tests/mocks/mock_folder_shortcut_data_model.js
diff --git a/chrome/test/data/file_manager/unit_tests/mocks/mock_folder_shortcut_data_model.js b/chrome/test/data/file_manager/unit_tests/mocks/mock_folder_shortcut_data_model.js
new file mode 100644
index 0000000000000000000000000000000000000000..d5963c54b378af796f3511d004023ae70b3a6d7d
--- /dev/null
+++ b/chrome/test/data/file_manager/unit_tests/mocks/mock_folder_shortcut_data_model.js
@@ -0,0 +1,25 @@
+// Copyright 2013 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 FolderShortcutDataModel.
+ * @inherits {cr.ui.ArrayDataModel}

[mtomasz, 2013/10/29 07:28:17]

nit: @extends

[yoshiki, 2013/10/31 09:07:23]

Done.

+ */

[mtomasz, 2013/10/29 07:28:17]

nit: @constructor missing

[yoshiki, 2013/10/31 09:07:23]

Done.

+function MockFolderShortcutDataModel(var_args) {

[mtomasz, 2013/10/29 07:28:17]

jsdoc missing for var_args

[yoshiki, 2013/10/31 09:07:23]

Done.

+  cr.ui.ArrayDataModel.apply(this, arguments);
+};

[mtomasz, 2013/10/29 07:28:17]

nit: ; is redundant after a function() without an assignment.

[yoshiki, 2013/10/31 09:07:23]

Done.

+
+MockFolderShortcutDataModel.prototype = {
+  __proto__: cr.ui.ArrayDataModel.prototype,

[mtomasz, 2013/10/29 07:28:17]

nit: , redundant here

[yoshiki, 2013/10/31 09:07:23]

Done.

+};
+
+/**
+ * Mock function for FolderShortcutDataModel.compare().
+ * @param {string} a First parameter to be compared.
+ * @param {string} b Second parameter to be compared with.
+ * @return {number} Negative if a < b, positive if a > b, or zero if a == b.
+ */
+MockFolderShortcutDataModel.prototype.compare = function(a, b) {
+  return a.localeCompare(b);
+};