Implement measurement using futures

client/tests/client/samples/swarm/swarm_tests.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('swarm_tests');
 
 #import('../../../../base/base.dart');
 #import('../../../../html/html.dart');
 #import('../../../../samples/swarm/swarmlib.dart');
 #import('../../../../testing/unittest/unittest.dart');
 #import('../../../../view/view.dart');
 #import('../../../../util/utilslib.dart');
 
 // TODO(jmesserly): these would probably be easier to debug if they were written
 // in the WebKit layout test style, so we could easy compare that the DOM is
 // what we expect it to be after performing some simulated user actions.
 
 void main() {
   Swarm swarm = new Swarm();
   UIStateProxy state = new UIStateProxy(swarm.sections);
   swarm.state = state;
   swarm.run();
-
   // TODO(jmesserly): should be adding the full stylesheet here
   Dom.addStyle('''
       .story-content {
         -webkit-column-width: 300px;
         -webkit-column-gap: 26px; /* 2em */
       }''');
 
   getStoryNode() => swarm.frontView.storyView.node;
 
   getView(Section section) {
     return CollectionUtils.find(swarm.frontView.sections.childViews,
         (view) => view.section == section);
   }
 
   getHistory(Article article) {
     final feed = article.dataSource;
     return {
       'section': CollectionUtils.find(swarm.sections,
           (s) => s.feeds.indexOf(feed, 0) >= 0).id,
       'feed': feed.id,
       'article': article.id
     };
   }
 
-  test('BackButton', () {
-    Expect.equals(null, swarm.frontView.storyView); // verify initial state
+  asyncTest('BackButton', 1, () {
+    serialInvokeAsync([() {
+      Expect.equals(null, swarm.frontView.storyView); // verify initial state
 
-    // Make sure we've transitioned to the section
-    // In the real app, this isn't needed because ConveyorView fires the
-    // transition end event before we can click a story.
-    SectionView section = getView(swarm.sections[0]);
-    section.showSources();
+      // Make sure we've transitioned to the section
+      // In the real app, this isn't needed because ConveyorView fires the
+      // transition end event before we can click a story.
+      SectionView section = getView(swarm.sections[0]);
+      section.showSources();
+    }, 
+    () {
+      final item = swarm.sections[0].feeds[2].articles[1];
+      state.loadFromHistory(getHistory(item));
 
-    final item = swarm.sections[0].feeds[2].articles[1];
-    state.loadFromHistory(getHistory(item));
+      Expect.equals(item, state.currentArticle.value);
 
-    Expect.equals(item, state.currentArticle.value);
+      Expect.isFalse(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
 
-    Expect.isFalse(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
+      state.loadFromHistory({});
 
-    state.loadFromHistory({});
-
-    Expect.equals(null, state.currentArticle.value);
-    Expect.isTrue(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
+      Expect.equals(null, state.currentArticle.value);
+      Expect.isTrue(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
+      callbackDone();
+    }]);
   });
 
   test('StoryView', () {
     state.clearHistory();
 
     Expect.isTrue(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
 
     final dataSourceView =
         swarm.frontView.currentSection.dataSourceView.getSubview(0);
     final itemView = dataSourceView.itemsView.getSubview(0);
@@ skipping 49 matching lines @@
   void expectHistory(List<Map<String, String>> entries) {
     Expect.equals(entries.length, history.length);
     for (int i = 0; i < entries.length; i++) {
       Map e = entries[i];
       Map h = history[i];
       Expect.equals(e['article'], h['article']);
     }
     clearHistory();
   }
 }