sdk/tests/isolate/nested_spawn_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.

// Dart test program for testing that isolates can spawn other isolates.

#library('NestedSpawnTest');
#import("dart:isolate");
#import('../../lib/unittest/unittest.dart');

class IsolateA extends Isolate {
  IsolateA() : super.heavy();

  void main() {
    this.port.receive((msg, replyTo) {
      Expect.equals("launch nested!", msg);
      new IsolateB().spawn().then((SendPort p) {
        p.call("alive?").then((msg) {
          Expect.equals("and kicking", msg);
          replyTo.send(499, null);
          this.port.close();
        });
      });
    });
  }
}

class IsolateB extends Isolate {
  IsolateB() : super.heavy();

  void main() {
    this.port.receive((msg, replyTo) {
      Expect.equals("alive?", msg);
      replyTo.send("and kicking", null);
      this.port.close();
    });
  }
}


main() {
  test("spawned isolates can spawn nested isolates", () {
    new IsolateA().spawn().then(expectAsync1((SendPort port) {
      port.call("launch nested!").then(expectAsync1((msg) {
        Expect.equals(499, msg);
      }));
    }));
  });
}