Converted Observatory top-nav-menu element

runtime/observatory/tests/observatory_ui/nav/top-menu/element_test.dart

 // Copyright (c) 2016, 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.
 import 'dart:html';
 import 'package:unittest/unittest.dart';
 import 'package:observatory/src/elements/nav/menu.dart';
+import 'package:observatory/src/elements/nav/top_menu.dart';
 
 main() {
-  NavMenuElement.tag.ensureRegistration();
+  NavTopMenuElement.tag.ensureRegistration();
+
+  final String tag = NavMenuElement.tag.name;
 
   group('instantiation', () {
-    final label = 'custom-label';
-    test('label', () {
-      final NavMenuElement e = new NavMenuElement(label);
+    test('default', () {
+      final NavTopMenuElement e = new NavTopMenuElement();
       expect(e, isNotNull, reason: 'element correctly created');
-      expect(e.label, equals(label), reason: 'element correctly created');
     });
     test('not last', () {
-      final NavMenuElement e = new NavMenuElement(label, last: false);
+      final NavTopMenuElement e = new NavTopMenuElement(last: false);
       expect(e, isNotNull, reason: 'element correctly created');
       expect(e.last, isFalse, reason: 'element correctly created');
     });
     test('last', () {
-      final NavMenuElement e = new NavMenuElement(label, last: true);
+      final NavTopMenuElement e = new NavTopMenuElement(last: true);
       expect(e, isNotNull, reason: 'element correctly created');
       expect(e.last, isTrue, reason: 'element correctly created');
     });
   });
   group('elements', () {
     test('created', () async {
-      final label = 'custom-label';
-      final NavMenuElement e = new NavMenuElement(label);
+      final NavTopMenuElement e = new NavTopMenuElement();
       document.body.append(e);
       await e.onRendered.first;
       expect(e.shadowRoot.children.length, isNonZero, reason: 'has elements');
       expect(e.shadowRoot.querySelector('content'), isNotNull,
                                                  reason: 'has content elements');
       e.remove();
       await e.onRendered.first;
       expect(e.shadowRoot.children.length, isZero, reason: 'is empty');
     });
-    test('react to label change', () async {
-      final label1 = 'custom-label-1';
-      final label2 = 'custom-label-2';
-      final NavMenuElement e = new NavMenuElement(label1);
+    test('react to last change', () async {
+      final NavTopMenuElement e = new NavTopMenuElement(last: false);
       document.body.append(e);
       await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains(label1), isTrue);
-      expect(e.shadowRoot.innerHtml.contains(label2), isFalse);
-      e.label = label2;
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement).last, isFalse);
+      e.last = true;
       await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains(label1), isFalse);
-      expect(e.shadowRoot.innerHtml.contains(label2), isTrue);
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement).last, isTrue);
+      e.last = false;
+      await e.onRendered.first;
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement).last, isFalse);
       e.remove();
       await e.onRendered.first;
     });
-    test('react to last change', () async {
-      final label = 'custom-label';
-      final NavMenuElement e = new NavMenuElement(label, last: false);
-      document.body.append(e);
-      await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains('>'), isTrue);
-      e.last = true;
-      await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains('>'), isFalse);
-      e.last = false;
-      await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains('>'), isTrue);
-      e.remove();
-      await e.onRendered.first;
-    });
   });
 }