| // Copyright (c) 2019, 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 Let C be a class, let A be a superclass of C, and let S1...Sk |
| * be superclasses of C that are also subclasses of A. C inherits all |
| * accessible instance members of A that have not been overridden by a |
| * declaration in C or in at least one of S1...Sk. |
| * A class may override instance members that would otherwise have been |
| * inherited from its superclass. |
| * @description Checks that a subclass inherits the instance members of its |
| * superclass(es). Test type aliases |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| import "../../../../Utils/expect.dart"; |
| |
| class A { |
| int val = 0; |
| } |
| |
| typedef AAlias = A; |
| |
| class B extends AAlias { |
| foo() { |
| ++val; |
| } |
| } |
| |
| class C extends B {} |
| |
| main() { |
| C c = new C(); |
| c.val = 5; |
| Expect.equals(5, c.val); |
| c.foo(); |
| Expect.equals(6, c.val); |
| } |