Clean up observable tests to new API.

client/tests/client/observable/ChangeEventTests.dart

Index: client/tests/client/observable/ChangeEventTests.dart
diff --git a/client/tests/client/observable/ChangeEventTests.dart b/client/tests/client/observable/ChangeEventTests.dart
index 1ae12b47490649e56e0aa3fc46534587f2b922ad..a59ce87d75347318dfeb1000a661715c71096561 100644
--- a/client/tests/client/observable/ChangeEventTests.dart
+++ b/client/tests/client/observable/ChangeEventTests.dart
@@ -2,31 +2,29 @@
 // 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.
 
-class ChangeEventTests extends ObservableTestSetBase {
-  // TODO(rnystrom): Remove this when default constructors are supported.
-  ChangeEventTests() : super();
-
-  setup() {
-    addTest(testChangeEventConstructors);
-  }
-
-  void testChangeEventConstructors() {
+testChangeEvent() {
+  test('constructor', () {
     // create property, list, global and check the proper initialization.
     final target = new AbstractObservable();
 
-    checkEvent(new ChangeEvent.property(target, 'pK', 33, '12'),
-        target, 'pK', null, ChangeEvent.UPDATE, 33, '12');
+    validateUpdate(
+        new ChangeEvent.property(target, 'pK', 33, '12'),
+        target, 'pK', null, 33, '12');
 
-    checkEvent(new ChangeEvent.list(target, ChangeEvent.UPDATE, 3, 33, '12'),
-        target, null, 3, ChangeEvent.UPDATE, 33, '12');
+    validateUpdate(
+        new ChangeEvent.list(target, ChangeEvent.UPDATE, 3, 33, '12'),
+        target, null, 3, 33, '12');
 
-    checkEvent(new ChangeEvent.list(target, ChangeEvent.INSERT, 3, 33, null),
-        target, null, 3, ChangeEvent.INSERT, 33, null);
+    validateInsert(
+        new ChangeEvent.list(target, ChangeEvent.INSERT, 3, 33, null),
+        target, null, 3, 33);
 
-    checkEvent(new ChangeEvent.list(target, ChangeEvent.REMOVE, 3, null, '12'),
-        target, null, 3, ChangeEvent.REMOVE, null, '12');
+    validateRemove(
+        new ChangeEvent.list(target, ChangeEvent.REMOVE, 3, null, '12'),
+        target, null, 3, '12');
 
-    checkEvent(new ChangeEvent.list(target, ChangeEvent.GLOBAL, 0, null, null),
-        target, null, 0, ChangeEvent.GLOBAL, null, null);
-  }
+    validateGlobal(
+        new ChangeEvent.list(target, ChangeEvent.GLOBAL, null, null, null),
+        target);
+  });
 }