| // Copyright (c) 2013, 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 test program for constructors and initializers. |
| |
| // Check function subtyping with type variables in factory constructors. |
| |
| import 'package:expect/expect.dart'; |
| |
| typedef void Foo<T>(T t); |
| |
| class C<T> { |
| factory C(foo) { |
| if (foo is Foo<T>) { |
| return new C.internal(); |
| } |
| throw 'not Foo<$T>'; |
| } |
| C.internal(); |
| } |
| |
| void method(String s) {} |
| |
| void main() { |
| Expect.isNotNull(new C<String>(method)); |
| Expect.throws(() => new C<bool>(method), (error) => error == 'not Foo<bool>'); |
| } |