[MD Bookmarks] Test Util

chrome/test/data/webui/md_bookmarks/item_test.js

 // Copyright 2016 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.
 
 suite('<bookmarks-item>', function() {
   var item;
-  var TEST_ITEM = {
-    id: '0', url: 'http://www.google.com'
-  };
+  var TEST_ITEM = createItem('0');
 
   setup(function() {
     item = document.createElement('bookmarks-item');
     replaceBody(item);
     item.item = TEST_ITEM;
   });
 
   test('changing the url changes the favicon', function() {
     var favicon = item.$.icon.style.backgroundImage;
     item.set('item.url', 'http://www.mail.google.com');
     assertNotEquals(favicon, item.$.icon.style.backgroundImage);
   });
 
   test('changing isFolder_ hides/unhides the folder/icon', function() {
     item.isFolder_ = true;
     assertFalse(item.$['folder-icon'].hidden);
     assertTrue(item.$.icon.hidden);
 
     item.isFolder_ = false;
     assertTrue(item.$['folder-icon'].hidden);
     assertFalse(item.$.icon.hidden);
   });
 });