LanguageFeatures/Simple-bounds/dynamic/class_typedef_l1_t14.dart

// Copyright (c) 2018, 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 Let [G] be a generic class or parameterized type alias with formal
/// type parameter declarations [F1] .. [Fk] containing formal type parameters
/// [X1] .. [Xk] and bounds [B1] .. [Bk]. We say that the formal type parameter
/// [Xj] has a simple bound when one of the following requirements is satisfied:
/// [Bj] is omitted.
/// [Bj] is included, but does not contain any of [X1] .. [Xk]. If [Bj] contains
/// a type [T] on the form qualified (for instance, [C] or [p.D]) which denotes a
/// generic class or parameterized type alias [G1] (that is, [T] is a raw type),
/// every type argument of [G1] has a simple bound.
/// @description Checks that simple bounds are correct for the class with
/// nullable function parameter (contravariant)
/// @author iarkh@unipro.ru


import "../../../Utils/expect.dart";

typedef G<X> = void Function(X);
class A<X extends G<int?>?> {}

main() {
  Expect.equals(
      typeOf<A<G<int?>?>>(),
      typeOf<A>()
  );
}