MD Bookmarks: Integrate new data store with UI elements

chrome/test/data/webui/md_bookmarks/list_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-list>', function() {
   var list;
-  var TEST_LIST =
-      [createItem('0'), createItem('1'), createFolder('2', [], null)];
+  var store;
 
   setup(function() {
+    store = new bookmarks.TestStore({
+      nodes: testTree(createFolder(
+          '0',
+          [
+            createItem('1'),
+            createFolder('3', [], null),

[calamity, 2017/03/09 04:58:57]

nit: Drop the null.

[tsergeant, 2017/03/09 06:27:55]

"Just 'createFolder'. It's cleaner."

+            createItem('5'),
+            createItem('7'),
+          ])),
+      selectedFolder: '0',
+    });
+    bookmarks.Store.instance_ = store;
+
     list = document.createElement('bookmarks-list');
     replaceBody(list);
-    list.displayedList = TEST_LIST;
+    Polymer.dom.flush();
   });
 
   test('folder menu item hides the url field', function() {
     // Bookmark editor shows the url field.
-    list.menuItem_ = TEST_LIST[0];
+    list.menuItem_ = store.data.nodes['1'];
     assertFalse(list.$['url'].hidden);
 
     // Folder editor hides the url field.
-    list.menuItem_ = TEST_LIST[2];
+    list.menuItem_ = store.data.nodes['3'];
     assertTrue(list.$['url'].hidden);
   });
 
   test('saving edit passes correct details to the update', function() {
     // Saving bookmark edit.
-    var menuItem = TEST_LIST[0];
+    var menuItem = store.data.nodes['1'];
+    // TODO(tsergeant): Avoid overwriting these functions directly.

[calamity, 2017/03/09 04:58:57]

Is this about using the real backend? If so, make this explicit.

[tsergeant, 2017/03/09 06:27:55]

My concern was with the fact that overwriting chrome.bookmarks.update like this
leaves the method clobbered for the rest of the test file. I was thinking of
BrowserProxy-style solutions to avoid this.

However, my follow-up CL (https://codereview.chromium.org/2742583003/) ended up
addressing this in a different way, so I've deleted the TODO.

     chrome.bookmarks.update = function(id, edit) {
       assertEquals(menuItem.id, id);
       assertEquals(menuItem.url, edit.url);
       assertEquals(menuItem.title, edit.title);
     };
     list.menuItem_ = menuItem;
     list.$.editBookmark.showModal();
     MockInteractions.tap(list.$.saveButton);
 
     // Saving folder rename.
-    menuItem = TEST_LIST[2];
+    menuItem = store.data.nodes['3'];
     chrome.bookmarks.update = function(id, edit) {
       assertEquals(menuItem.id, id);
       assertEquals(menuItem.title, edit.title);
       assertEquals(undefined, edit.url);
     };
     list.menuItem_ = menuItem;
     list.$.editBookmark.showModal();
     MockInteractions.tap(list.$.saveButton);
   });
+
+  test('renders correct <bookmark-item> elements', function() {
+    var items = list.root.querySelectorAll('bookmarks-item');
+    var ids = Array.from(items).map((item) => item.itemId);
+
+    assertDeepEquals(['1', '3', '5', '7'], ids);
+  });
 });