isolates in frog: playing with API improvements

tests/isolate/src/NestedSpawn2Test.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.
 
 // Dart test program for testing that isolates can spawn other isolates and
 // that the nested isolates can communicate with the main once the spawner has
 // disappeared.
 
 #library('NestedSpawn2Test');
 #import('TestFramework.dart');
 
-class Isolate1 extends Isolate {
-  Isolate1() : super.heavy();
+class IsolateA extends Isolate {
+  IsolateA() : super.heavy();
 
   void main() {
     this.port.receive((msg, replyTo) {
       Expect.equals("launch nested!", msg);
-      new Isolate2().spawn().then((SendPort p) {
+      new IsolateB().spawn().then((SendPort p) {
         p.send(replyTo, null);
         this.port.close();
       });
     });
   }
 }
 
 String msg0 = "0 there?";
 String msg1 = "1 Yes.";
 String msg2 = "2 great. Think the other one is already dead?";
 String msg3 = "3 Give him some time.";
 String msg4 = "4 now?";
 String msg5 = "5 Now.";
 String msg6 = "6 Great. Bye";
 
-class Isolate2 extends Isolate {
-  Isolate2() : super.heavy();
+class IsolateB extends Isolate {
+  IsolateB() : super.heavy();
 
   void main() {
     this.port.receive((mainPort, replyTo) {
       this.port.close();
       // Do a little ping-pong dance to give the intermediate isolate time to
       // die.
       mainPort.call(msg0).receive((msg, replyTo) {
         Expect.equals("1", msg[0]);
         replyTo.call(msg2).receive((msg, replyTo) {
               Expect.equals("3", msg[0]);
               replyTo.call(msg4).receive((msg, replyTo) {
                 Expect.equals("5", msg[0]);
                 replyTo.send(msg6, null);
               });
             });
       });
     });
   }
 }
 
 test(TestExpectation expect) {
-  expect.completes(new Isolate1().spawn()).then((SendPort port) {
+  expect.completes(new IsolateA().spawn()).then((SendPort port) {
     port.call("launch nested!").receive(expect.runs2((msg, replyTo) {
       Expect.equals("0", msg[0]);
       replyTo.call(msg1).receive(expect.runs2((msg, replyTo) {
         Expect.equals("2", msg[0]);
         replyTo.call(msg3).receive(expect.runs2((msg, replyTo) {
               Expect.equals("4", msg[0]);
               replyTo.call(msg5).receive(expect.runs2((msg, replyTo) {
                 Expect.equals("6", msg[0]);
                 expect.succeeded();
               }));
             }));
       }));
     }));
   });
 }
 
 main() {
   runTests([test]);
 }