| // Copyright (c) 2017, 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'; |
| |
| import 'wait_for_event_helper.dart'; |
| |
| // Tests that waitForEvent() drains microtasks before blocking even when |
| // called from a microtask. |
| |
| main() { |
| initWaitForEvent(); |
| asyncStart(); |
| bool flag1 = false; |
| bool flag2 = false; |
| scheduleMicrotask(() { |
| scheduleMicrotask(() { |
| flag1 = true; |
| asyncEnd(); |
| }); |
| Expect.isFalse(flag1); |
| waitForEvent(timeout: const Duration(milliseconds: 10)); |
| Expect.isTrue(flag1); |
| flag2 = true; |
| }); |
| Expect.isFalse(flag1); |
| Expect.isFalse(flag2); |
| waitForEvent(timeout: const Duration(milliseconds: 10)); |
| Expect.isTrue(flag1); |
| Expect.isTrue(flag2); |
| } |