Centralized event streams

runtime/observatory/tests/observatory_ui/vm_connect_target/element_test.dart

 // Copyright (c) 2015, 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/mocks.dart';
 import 'package:observatory/src/elements/vm_connect_target.dart';
+import '../mocks.dart';
 
 main() {
   VMConnectTargetElement.tag.ensureRegistration();
 
   TargetMock t;
   setUp(() {
     t = new TargetMock(name: "a network address");
   });
   group('instantiation', () {
     test('no other parameters', () {
-      final VMConnectTargetElement e = new VMConnectTargetElement(t);
+      final e = new VMConnectTargetElement(t);
       expect(e, isNotNull, reason: 'element correctly created');
       expect(e.target, t, reason: 'target not setted');
       expect(e.current, isFalse, reason: 'default to not current');
     });
     test('isCurrent: false', () {
-      final VMConnectTargetElement e = new VMConnectTargetElement(t,
-                                            current:false);
+      final e = new VMConnectTargetElement(t, current:false);
       expect(e, isNotNull, reason: 'element correctly created');
       expect(e.target, t, reason: 'target not setted');
       expect(e.current, isFalse, reason: 'default to not current');
     });
     test('isCurrent: true', () {
-      final VMConnectTargetElement e = new VMConnectTargetElement(t,
-                                            current:true);
+      final e = new VMConnectTargetElement(t, current:true);
       expect(e, isNotNull, reason: 'element correctly created');
       expect(e.target, t, reason: 'target not setted');
       expect(e.current, isTrue, reason: 'default to not current');
     });
   });
   test('elements created after attachment', () async {
-    final VMConnectTargetElement e = new VMConnectTargetElement(t);
+    final e = new VMConnectTargetElement(t);
     document.body.append(e);
     await e.onRendered.first;
     expect(e.children.length, isNonZero, reason: 'has elements');
     e.remove();
     await e.onRendered.first;
     expect(e.children.length, isZero, reason: 'is empty');
   });
   group('events are fired', () {
     VMConnectTargetElement e;
     setUp(() async {
@@ skipping 28 matching lines @@
     });
     test('onRemove events (code)', () async {
       e.onDelete.listen(expectAsync((TargetEvent event) {
         expect(event, isNotNull, reason: 'event is passed');
         expect(event.target, t, reason: 'target is the same');
       }, count: 1, reason: 'event is fired'));
       e.delete();
     });
   });
 }