| // Copyright (c) 2016, 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 S be a class, M be a mixin with required superinterfaces |
| /// T1, . . . , Tn, combined superinterface MS, implemented interfaces |
| /// I1, . . . , Ik and members as mixin member declarations, and let N be a name. |
| /// It is a compile-time error to apply M to S if S does not implement, directly |
| /// or indirectly, all of T1, . . . , Tn. |
| /// @description Checks that it is no error if M implements all its |
| /// superinterfaces |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| |
| class A { |
| int get a => 1; |
| } |
| |
| class B extends A { |
| int get b => 2; |
| } |
| |
| mixin M on B { |
| int get c => 3; |
| } |
| |
| class S extends B { |
| int get a => -1; |
| } |
| |
| class C extends S with M { |
| int get b => -2; |
| } |
| |
| main() { |
| C c = new C(); |
| Expect.equals(-1, c.a); |
| Expect.equals(-2, c.b); |
| } |