Language/Types/Type_Aliases/dynamic_param_type_t01.dart

// Copyright (c) 2011, 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 Likewise, if a type annotation is omitted on a formal parameter
/// in typedef declaration, it is taken to be dynamic.
/// @description Checks that function types with various types of formal
/// parameter are subtypes of given type t1 whose declaration omits parameter
/// types, therefore the type of formal parameter of t1 should be dynamic.
/// @author iefremov, sgrekhov@unipro.ru

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

typedef F1(x);

typedef Func();
typedef Func2(int x);

main() {
  Expect.isTrue((int) {} is F1);
  Expect.isTrue((Object) {} is F1);
  Expect.isTrue((Func) {} is F1);
  Expect.isTrue((Func2) {} is F1);
  Expect.runtimeIsType<F1>((int) {});
  Expect.runtimeIsType<F1>((Object) {});
  Expect.runtimeIsType<F1>((Func) {});
  Expect.runtimeIsType<F1>((Func2) {});
}