LibTest/async/Zone/createTimer_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.

// @dart = 2.9

/// @assertion abstract Timer createTimer(Duration duration, void callback())
/// Creates a Timer where the callback is executed in this zone.
/// @description Checks that timer is created and that callback
/// is executed in this zone.
/// @author ilya


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

void test(Zone zone) {
  int count = 0;
  Timer timer;

  asyncStart();
  timer = zone.createTimer(new Duration(milliseconds: 10), () {
    Expect.isTrue(timer is Timer);
    Expect.equals(zone, Zone.current);
    if (count++ > 0) {
      Expect.fail('Timer should not be periodic');
    }
    asyncEnd();
  });
}

main() {
  test(Zone.current);
  test(Zone.current.fork());
}