LibTest/async/Future/Future.delayed_A02_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 Future.delayed(Duration duration, [dynamic  computation()])
///    If computation is omitted, it will be treated as if computation was set to
/// () => null, and the future will eventually complete with the null value.
/// @description Checks that if computation is not given or null,
/// then it will behave as if computation was set to () => null.
/// @author kaigorodov

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

main() {
  asyncStart();
  new Future.delayed(Duration.zero)
    .then((value) {
      Expect.equals(null, value);
      asyncEnd();
    });

  asyncStart();
  new Future.delayed(Duration.zero, null)
    .then((value) {
      Expect.equals(null, value);
      asyncEnd();
    });
}