blob: 8d389d1c68609261d0606c8871b42d2e25b98a79 [file] [log] [blame]
// 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
// SharedOptions=--enable-experiment=nonfunction-type-aliases
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);