Make browser tests all run from a server instead of the local filesystem.

samples/tests/samples/swarm/swarm_test.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 'dart:html';
 import '../../../swarm/swarmlib.dart';
 import '../../../swarm/swarm_ui_lib/base/base.dart';
 import '../../../swarm/swarm_ui_lib/view/view.dart';
 import '../../../swarm/swarm_ui_lib/util/utilslib.dart';
 import '../../../../pkg/unittest/lib/unittest.dart';
 import '../../../../pkg/unittest/lib/html_config.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() {
   useHtmlConfiguration();
-  Swarm swarm = new Swarm();
+  Swarm swarm = new Swarm(useCannedData: true);
   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 */
       }''');
 
@@ skipping 17 matching lines @@
   test('BackButton', () {
     _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();
-      }, 
+      },
       () {
         final item = swarm.sections[0].feeds[2].articles[1];
         state.loadFromHistory(getHistory(item));
 
         Expect.equals(item, state.currentArticle.value);
 
         Expect.isFalse(getStoryNode().classes.contains(CSS.HIDDEN_STORY));
 
         state.loadFromHistory({});
 
@@ skipping 78 matching lines @@
     void invokeNext() {
       closures[i]();
       i++;
       if (i < length) {
         window.setTimeout(expectAsync0(invokeNext), 0);
       }
     }
     window.setTimeout(expectAsync0(invokeNext), 0);
   }
 }