| // 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. |
| |
| // @dart = 2.7 |
| |
| // dart2jsOptions=--no-minify |
| |
| import "package:expect/expect.dart"; |
| |
| typedef T Func<T>(T x); |
| |
| class A<T> { |
| final Box<T> box; |
| A._(this.box); |
| A.foo(Func<T> func) : this._(new Box<T>(func)); |
| } |
| |
| class Box<T> { |
| final Func<T> func; |
| Box(this.func); |
| } |
| |
| class B extends A { |
| B() : super.foo((x) => x); |
| } |
| |
| main() { |
| var x = new B(); |
| Expect.equals(x.runtimeType.toString(), 'B'); |
| } |
