LibTest/async/Timer/isActive_A01_t02.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 final bool isActive
 * Returns whether the timer is still active.
 * A non-periodic timer is active if the callback has not been executed,
 * and the timer has not been canceled.
 * A periodic timer is active if it has not been canceled.
 * @description Checks that for periodic timer, isActive is true if timer has
 * not been canceled.
 * @author ilya
 */
import "dart:async";
import "../../../Utils/expect.dart";

check(int delay) {
  int times = 5;
  int count = 0;

  asyncStart();
  Timer t = new Timer.periodic(durationMs(delay), (Timer timer) {
    count++;
    Expect.isTrue(timer.isActive);
    if (count == times) {
      timer.cancel();
      Expect.isFalse(timer.isActive);
      asyncEnd();
    }
  });

  Expect.isTrue(t.isActive);
}

main() {
  check(10);
  check(1);
  check(0);
  check(-1);
  check(-10);
}