| // 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. |
| |
| // @dart = 2.9 |
| |
| // Test that a generic closure is correctly constructed. |
| |
| library generic_methods_closure_test; |
| |
| import "package:expect/expect.dart"; |
| |
| class A {} |
| |
| class I<T> {} |
| |
| class B extends I<B> {} |
| |
| void fun<T>(List<T> list) { |
| var helper1 = <S>(List<S> list) { |
| if (list.length > 0) { |
| Expect.isTrue(list[0] is S); |
| } |
| Expect.isTrue(list is List<S>); |
| Expect.isTrue(list is List<T>); |
| }; |
| |
| void helper2<S>(List<S> list) { |
| if (list.length > 0) { |
| Expect.isTrue(list[0] is S); |
| } |
| Expect.isTrue(list is List<S>); |
| Expect.isTrue(list is List<T>); |
| } |
| |
| helper1<T>(list); |
| helper2<T>(list); |
| } |
| |
| main() { |
| List<B> list = <B>[new B()]; |
| fun<B>(list); |
| } |