| // 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 |
| |
| /// @assertion String operator +(String other) |
| /// ... |
| /// @description Checks that if other string is null then exception is thrown |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Expect.throws(() { |
| "" + null; |
| }); |
| Expect.throws(() { |
| r" " + null; |
| }); |
| Expect.throws(() { |
| "\n" + null; |
| }); |
| } |
