unittest step 3 and 4: remove TestFramework.dart, make test.dart use

tests/isolate/src/ConstructorTest.dart

 // Copyright (c) 2011, 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.
 
 #library("ConstructorTest");
 #import("dart:isolate");
-#import("TestFramework.dart");
+#import('../../../lib/unittest/unittest.dart');
 
 class ConstructorTest extends Isolate {
   final int field;
   ConstructorTest() : super(), field = 499;
 
   void main() {
     this.port.receive((ignoredMessage, reply) {
       reply.send(field, null);
       this.port.close();
     });
   }
 }
 
-void test(TestExpectation expect) {
-  ConstructorTest test = new ConstructorTest();
-  expect.completes(test.spawn()).then((SendPort port) {
-    port.call("ignored").then(expect.runs1((message) {
-      Expect.equals(499, message);
-      expect.succeeded();
+main() {
+  test("constructor correctly initialized child isolate", () {
+    ConstructorTest test = new ConstructorTest();
+    test.spawn().then(expectAsync1((SendPort port) {
+      port.call("ignored").then(expectAsync1((message) {
+        Expect.equals(499, message);
+      }));
     }));
   });
 }
-
-main() {
-  runTests([test]);
-}