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

tests/isolate/src/SpawnTest.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("SpawnTest");
 #import("dart:isolate");
-#import('../../../lib/unittest/unittest.dart');
+#import("TestFramework.dart");
 
-main() {
-  test("spawn a new isolate", () {
-    SpawnedIsolate isolate = new SpawnedIsolate();
-    isolate.spawn().then(expectAsync1((SendPort port) {
-      port.call(42).then(expectAsync1((message) {
-        Expect.equals(42, message);
-      }));
+void test(TestExpectation expect) {
+  SpawnedIsolate isolate = new SpawnedIsolate();
+  expect.completes(isolate.spawn()).then((SendPort port) {
+    port.call(42).then(expect.runs1((message) {
+      Expect.equals(42, message);
+      expect.succeeded();
     }));
   });
 }
 
 class SpawnedIsolate extends Isolate {
 
   SpawnedIsolate() : super() { }
 
   void main() {
     this.port.receive((message, SendPort replyTo) {
       Expect.equals(42, message);
       replyTo.send(42, null);
       this.port.close();
     });
   }
 
 }
+
+main() {
+  runTests([test]);
+}