| // Copyright (c) 2019, 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. |
| |
| /// @assertion A generic type alias is a declaration [D] of one of the following |
| /// forms: |
| /// m typedef id<X1 extends B1, . . . , Xs extends Bs> = T; |
| /// ... |
| /// [D] introduces a mapping from actual type argument lists to types. |
| /// @description Checks that [D] maps argument list to types when [T] represents |
| /// some class with several parameters |
| /// @Issue 42432 |
| /// @author iarkh@unipro.ru |
| |
| import "../../Utils/expect.dart"; |
| |
| class A<T1, T2, T3> { |
| test(exp1, exp2, exp3) { |
| Expect.equals(exp1, T1); |
| Expect.equals(exp2, T2); |
| Expect.equals(exp3, T3); |
| } |
| } |
| |
| typedef AAlias<T1, T2, T3> = A<T1, T2, T3>; |
| typedef BAlias = AAlias; |
| typedef CAlias = A<int, String, num>; |
| typedef DAlias<T> = A<T, T, T>; |
| |
| main() { |
| AAlias().test(dynamic, dynamic, dynamic); |
| AAlias<int, String, num>().test(int, String, num); |
| |
| BAlias().test(dynamic, dynamic, dynamic); |
| |
| CAlias().test(int, String, num); |
| |
| DAlias().test(dynamic, dynamic, dynamic); |
| DAlias<int>().test(int, int, int); |
| } |