LanguageFeatures/nnbd/weak/generics_A01_t03.dart

// 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 The default bound of generic type parameters is treated as
/// [Object?].
/// @description It seems like it is not possible to obtain the value of the
/// default bound at runtime, we can only obtain the result of instantiation to
/// bound. So the test checks that if generic type parameter of non-function
/// typedef is not clearly specified, it is treated as [dynamic] at runtime.
/// See also co19 issue #530.
/// @Issue 40367, 40368
/// @author iarkh@unipro.ru

// Requirements=nnbd-weak

import '../../../Utils/expect.dart';

class A<T> {}
typedef AAlias<T> = A<T>;

class B<T1, T2, T3> {}
typedef BAlias<T1, T2, T3> = B<T1, T2, T3>;

main() {
  Expect.equals(typeOf<AAlias<dynamic>>(), typeOf<AAlias>());
  Expect.equals(typeOf<BAlias<dynamic, dynamic, dynamic>>(), typeOf<BAlias>());
}