| /* |
| * 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 interface of class C is an implicit interface that declares instance members |
| * that correspond to the instance members declared by C, and whose direct superinterfaces |
| * are the direct superinterfaces of C. When a class name appears as type, |
| * that name denotes the interface of the class. |
| * @description Checks that a class can be used as an interface. |
| * @author msyabro |
| * @reviewer iefremov |
| */ |
| import "../../Utils/expect.dart"; |
| |
| abstract class A {} |
| class C {} |
| |
| class B implements A {} |
| class D implements C {} |
| |
| main() { |
| var b = new B(); |
| Expect.isTrue(b is A); |
| |
| var d = new D(); |
| Expect.isTrue(d is C); |
| } |
