sdk/tests/isolate/count_test.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("CountTest");
#import('dart:isolate');
#import('../../lib/unittest/unittest.dart');

class TestIsolate extends Isolate {

  TestIsolate() : super();

  void main() {
    int count = 0;
    this.port.receive((int message, SendPort replyTo) {
      if (message == -1) {
        Expect.equals(10, count);
        replyTo.send(-1, null);
        this.port.close();
        return;
      }

      Expect.equals(count, message);
      count++;
      replyTo.send(message * 2, null);
    });
  }
}

void main() {
  test("count 10 consecutive messages", () {
    int count = 0;
    new TestIsolate().spawn().then(expectAsync1((SendPort remote) {
      ReceivePort local = new ReceivePort();
      SendPort reply = local.toSendPort();

      local.receive(expectAsync2((int message, SendPort replyTo) {
        if (message == -1) {
          Expect.equals(11, count);
          local.close();
          return;
        }

        Expect.equals((count - 1) * 2, message);
        remote.send(count++, reply);
        if (count == 10) {
          remote.send(-1, reply);
        }
      }, count: 11));
      remote.send(count++, reply);
    }));
  });
}