| // Copyright (c) 2016, 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 void addError(Object error, [StackTrace stackTrace]) |
| /// Send or enqueue an error event. |
| /// |
| /// The error must not be null. |
| /// |
| /// @description Checks that the error must not be null. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| StreamController controller = new StreamController(); |
| Expect.throws(() { |
| controller.addError(null); |
| }); |
| controller.close(); |
| } |