| // 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. |
| import 'package:expect/expect.dart'; |
| |
| class Implementation { |
| dynamic method(int x) {} |
| } |
| |
| abstract class Interface<T> { |
| dynamic method(T x); |
| } |
| |
| class Subclass extends Implementation implements Interface<int> {} |
| |
| main() { |
| Subclass subclass = new Subclass(); |
| Interface<int> intInterface = subclass; |
| Interface<num> numInterface = intInterface; |
| Expect.throws(() => numInterface.method(2.5)); |
| } |
