Removed polymer & mirror from Observatory

runtime/observatory/tests/observatory_ui/nav/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';
-
-main() {
-  NavMenuElement.tag.ensureRegistration();
-
-  group('instantiation', () {
-    final label = 'custom-label';
-    test('label', () {
-      final e = new NavMenuElement(label);
-      expect(e, isNotNull, reason: 'element correctly created');
-      expect(e.label, equals(label), reason: 'element correctly created');
-    });
-    test('not last', () {
-      final e = new NavMenuElement(label, last: false);
-      expect(e, isNotNull, reason: 'element correctly created');
-      expect(e.last, isFalse, reason: 'element correctly created');
-    });
-    test('last', () {
-      final e = new NavMenuElement(label, 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 e = new NavMenuElement(label);
-      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 e = new NavMenuElement(label1);
-      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;
-      await e.onRendered.first;
-      expect(e.shadowRoot.innerHtml.contains(label1), isFalse);
-      expect(e.shadowRoot.innerHtml.contains(label2), isTrue);
-      e.remove();
-      await e.onRendered.first;
-    });
-    test('react to last change', () async {
-      final label = 'custom-label';
-      final 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;
-    });
-  });
-}