| // 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 The superclass of a class C that has a with clause with |
| * M1,...,Mk and an extends clause extends S is the application of mixin |
| * Mk*...*M1 to S. If no with clause is specified then the extends clause of a |
| * class C specifies its superclass. |
| * @description Checks that a class can indeed specify a superclass using the |
| * extends clause and an instance of this class is also an instance of that |
| * superclass. Test type aliases |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| import "../../../Utils/expect.dart"; |
| |
| class A {} |
| |
| typedef AAlias = A; |
| |
| class B extends AAlias {} |
| |
| main() { |
| Expect.isTrue(new B() is A); |
| } |
