| // Copyright (c) 2018, 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. |
| |
| import "package:expect/expect.dart"; |
| |
| // Test various invalid mixin applications where the supertype doesn't |
| // implement the super-interfaces. |
| |
| abstract class UnaryNum { |
| num foo(num x) => x; |
| } |
| |
| abstract class UnaryInt { |
| num foo(int x) => x; |
| } |
| |
| mixin M1 on UnaryNum {} |
| |
| class _ = Object with M1; //# 01: compile-time error |
| class _ = Null with M1; //# 02: compile-time error |
| class _ = UnaryInt with M1; //# 03: compile-time error |
| |
| mixin M2 on UnaryNum, UnaryInt {} |
| |
| class _ = UnaryInt with M2; //# 04: compile-time error |
| class _ = UnaryNum with M2; //# 05: compile-time error |
| |
| // Note that it is not sufficient for the application to declare that it |
| // implements the super-interface. |
| abstract class _ = Object with M1 implements UnaryNum; //# 06: compile-time error |
| |
| // Nor is it sufficient, in the case of an anonymous mixin application, for the |
| // containing class to declare that it implements the super-interface. |
| abstract class _ extends Object with M1 implements UnaryNum {} //# 07: compile-time error |
| |
| main() { |
| // M1 and M2 are valid types. |
| Expect.notType<M1>(null); |
| Expect.notType<M2>(null); |
| } |