LibTest/async/Timer/cancel_A01_t01.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.

/// @assertion  abstract void cancel()
/// Cancels the timer.
/// @description Checks that periodic Timer can be cancelled.
/// @author kaigorodov

import "dart:async";
import "../../../Utils/expect.dart";

main() {
  int delay = 20;
  int count = 0;

  Timer timer = new Timer.periodic(durationInMilliseconds(delay), (Timer t) {
    count++;
  });
  timer.cancel();

  asyncStart();
  new Timer(durationInMilliseconds(delay * 3), () {
    Expect.equals(count, 0);
    asyncEnd();
  });
}