| /* |
| * Copyright (c) 2020, 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 A type T is assignable to a type S if T is dynamic, or if T is a |
| * subtype of S. |
| * |
| * @description Checks that if type T is not dynamic and T is a subtype of S |
| * then a type T is not assignable to a type S |
| * |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| // Requirements=nnbd-strong |
| import "../../Utils/expect.dart"; |
| class A {} |
| class B extends A {} |
| class C extends A {} |
| |
| main() { |
| B b1 = new A(); |
| // ^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| B b2 = new C(); |
| // ^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| B? b3 = new A(); |
| // ^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| B? b4 = new C(); |
| // ^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
