| // 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 The null object is the sole instance of the built-in class Null. |
| * @description Checks that type of null is Null type. |
| * @author ngl@unipro.ru |
| */ |
| import '../../../Utils/expect.dart'; |
| |
| class A {} |
| |
| main() { |
| var n = null; |
| Expect.isTrue(Null is Type); |
| Expect.isTrue(null is Null); |
| Expect.isTrue(n is Null); |
| Expect.isFalse(null is A); |
| Expect.isFalse(n is A); |
| } |