| // Copyright (c) 2018, 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 |
| |
| import 'dart:async'; |
| import 'dart:cli'; |
| |
| import 'package:async_helper/async_helper.dart'; |
| import 'package:expect/expect.dart'; |
| |
| main() { |
| asyncStart(); |
| Completer<Null> c = new Completer<Null>(); |
| Timer.run(() { |
| c.complete(null); |
| asyncEnd(); |
| }); |
| Null result = waitFor<Null>(c.future); |
| Expect.isNull(result); |
| } |