Converted Observatory isolate-nav-menu element

runtime/observatory/tests/observatory_ui/nav/isolate-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 'dart:async';
+import 'package:unittest/unittest.dart';
+import 'package:observatory/models.dart';
+import 'package:observatory/mocks.dart';
+import 'package:observatory/src/elements/nav/menu.dart';
+import 'package:observatory/src/elements/nav/isolate_menu.dart';
+
+main(){
+  NavIsolateMenuElement.tag.ensureRegistration();
+
+  final String tag = NavMenuElement.tag.name;
+
+  StreamController<IsolateUpdateEvent> updatesController;
+  final IsolateRefMock ref = const IsolateRefMock(id: 'i-id', name: 'old-name');
+  final IsolateMock obj = const IsolateMock(id: 'i-id', name: 'new-name');
+  setUp(() {
+    updatesController = new StreamController<IsolateUpdateEvent>();
+  });
+  group('instantiation', () {
+    test('IsolateRef', () {
+      final NavIsolateMenuElement e = new NavIsolateMenuElement(ref,
+                                      updatesController.stream);
+      expect(e, isNotNull, reason: 'element correctly created');
+      expect(e.isolate, equals(ref));
+    });
+    test('Isolate', () {
+      final NavIsolateMenuElement e = new NavIsolateMenuElement(obj,
+                                      updatesController.stream);
+      expect(e, isNotNull, reason: 'element correctly created');
+      expect(e.isolate, equals(obj));
+    });
+  });
+  test('elements created after attachment', () async {
+    final NavIsolateMenuElement e = new NavIsolateMenuElement(ref,
+                                    updatesController.stream);
+    document.body.append(e);
+    await e.onRendered.first;
+    expect(e.shadowRoot.children.length, isNonZero, reason: 'has elements');
+    e.remove();
+    await e.onRendered.first;
+    expect(e.shadowRoot.children.length, isZero, reason: 'is empty');
+  });
+  group('updates', () {
+    test('are correctly listen', () async {
+      final NavIsolateMenuElement e = new NavIsolateMenuElement(ref,
+                                      updatesController.stream);
+      expect(updatesController.hasListener, isFalse);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect(updatesController.hasListener, isTrue);
+      e.remove();
+      await e.onRendered.first;
+      expect(updatesController.hasListener, isFalse);
+    });
+    test('have effects', () async {
+      final NavIsolateMenuElement e = new NavIsolateMenuElement(ref,
+                                      updatesController.stream);
+      document.body.append(e);
+      await e.onRendered.first;
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement)
+             .label.contains(ref.name), isTrue);
+      updatesController.add(new IsolateUpdateEventMock(isolate: obj));
+      await e.onRendered.first;
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement)
+             .label.contains(ref.name), isFalse);
+      expect((e.shadowRoot.querySelector(tag) as NavMenuElement)
+            .label.contains(obj.name), isTrue);
+      e.remove();
+    });
+  });
+}