| // Copyright (c) 2017, 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"; | |
| class A {} | |
| class B extends A {} | |
| class Base { | |
| Base(B b); | |
| } | |
| class C extends Base { | |
| C(A a) : super(a); | |
| } | |
| main() { | |
| A a1 = new B(); | |
| A a2 = new A(); | |
| new C(a1); // No error | |
| Expect.throwsTypeError(() { | |
| new C(a2); | |
| }); | |
| } |