Turn on Polymer TodoMVC tests on Dart buildbots

samples/third_party/todomvc/test/listorder_test.dart

+// Copyright (c) 2013, 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 todomvc.test.listorder_test;
+
+import 'dart:html';
+import 'package:polymer/polymer.dart';
+import 'package:unittest/unittest.dart';
+import 'package:unittest/html_config.dart';
+import '../web/model.dart';
+
+/**
+ * This test runs the TodoMVC app, adds a few elements, marks some as done, and
+ * switches from back and forth between "Active" and "All". This will make some
+ * nodes to be hidden and readded to the page.
+ */
+main() {
+  useHtmlConfiguration();
+
+  final root = query('todo-app').shadowRoot;
+
+  test('programmatically add items to model', () {
+    appModel.todos.addAll([
+      new Todo('one (unchecked)'),
+      new Todo('two (checked)')..done = true,
+      new Todo('three (unchecked)')
+    ]);
+    performMicrotaskCheckpoint();
+    expect(root.queryAll('#todo-list li[is=todo-row]').length, 3);
+
+    // TODO(jmesserly): HTML Imports breaks relative hash links when the
+    // component is at a different path from the main HTML document. For now we
+    // fix it programmatically.
+    for (var a in root.queryAll('#filters > li > a')) {
+      a.href = '#${Uri.parse(a.href).fragment}';
+    }
+  });
+
+  test('navigate to #/active', () {
+    windowLocation.hash = '#/active';
+    performMicrotaskCheckpoint();
+    expect(root.queryAll('#todo-list li[is=todo-row]').length, 2);
+  });
+
+  test('navigate to #/completed', () {
+    windowLocation.hash = '#/completed';
+    performMicrotaskCheckpoint();
+    expect(root.queryAll('#todo-list li[is=todo-row]').length, 1);
+  });
+
+  test('navigate back to #/', () {
+    windowLocation.hash = '#/';
+    performMicrotaskCheckpoint();
+    expect(root.queryAll('#todo-list li[is=todo-row]').length, 3);
+  });
+}