| // Copyright (c) 2023, 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. |
| |
| // @dart=2.19 |
| |
| import "package:expect/expect.dart"; |
| |
| class M<T> { |
| t() { |
| return T; |
| } |
| } |
| |
| class A<U> = Object with M<U>; |
| |
| class B<V> = Object with A<V>; |
| |
| class C<U> = Object with M<List<U>>; |
| |
| class D<V> = Object with C<Set<V>>; |
| |
| class E extends A<num> {} |
| |
| class F extends B<String> {} |
| |
| class G<T> extends C<T> {} |
| |
| class H<T> extends D<Map<String, T>> {} |
| |
| main() { |
| Expect.equals(num, new E().t()); |
| Expect.equals(String, new F().t()); |
| Expect.equals(List<bool>, new G<bool>().t()); |
| Expect.equals(List<Set<Map<String, int>>>, new H<int>().t()); |
| } |