[MD Bookmarks] Test Util

chrome/test/data/webui/md_bookmarks/test_util.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.
 
 /**
  * Replace the current body of the test with a new element.
  * @param {Element} element
  */
 function replaceBody(element) {
   PolymerTest.clearBody();
   document.body.appendChild(element);
 }
+
+/**
+ * Initialize a tree for UI testing. This performs the same initialization as
+ * `setUpStore_` in <bookmarks-store>, but without the need for a store element
+ * in the test.
+ * @param {BookmarkTreeNode} rootNode
+ */
+function setupTreeForUITests(rootNode){
+  if (!rootNode.path)
+    rootNode.path = 'rootNode';
+
+  BookmarksStore.generatePaths(rootNode, 0);
+  BookmarksStore.initNodes(rootNode);
+}
+
+/**
+ * Creates a folder with given properties.
+ * @param {string} id
+ * @param {Array<BookmarkTreeNode>} children
+ * @param {Object=} config
+ * @return {BookmarkTreeNode}
+ */
+function createFolder(id, children, config) {
+  var newFolder = {
+    id: id,
+    children: children,
+    title: '',
+  };
+  if (config) {
+    for (var key in config)
+      newFolder[key] = config[key];
+  }
+  if (children.length) {
+    for (var i = 0; i < children.length; i++) {
+      children[i].index = i;
+      children[i].parentId = newFolder.id;
+    }
+  }
+  return newFolder;
+}
+
+/**
+ * Creates a bookmark with given properties.
+ * @param {string} id
+ * @param {Object=} config
+ * @return {BookmarkTreeNode}
+ */
+function createItem(id, config) {
+  var newItem = {
+    id: id,
+    title: '',
+    url: 'http://www.google.com/',
+  };
+  if (config) {
+    for (var key in config)
+      newItem[key] = config[key];
+  }
+  return newItem;
+}