Language/15_Types/3_Type_Declarations/1_Typedef_A03_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 If no return type is specified in typedef declaration, it is taken to be dynamic.
 * @description checks that function types with various return types
 * are all subtypes of given type t1 that declares no return type, therefore the return type of t1 
 * should be dynamic.
 * @static-clean
 * @author iefremov
 * @reviewer rodionov
 */
import "../../../Utils/expect.dart";

typedef f1();

typedef func();
typedef int func2(int x);

int ifunc() {}
bool bfunc() {}
String sfunc() {}
func ffunc() {}
func2 f2func() {}

main() {
  Expect.isTrue(ifunc is f1);
  Expect.isTrue(bfunc is f1);
  Expect.isTrue(sfunc is f1);
  Expect.isTrue(ffunc is f1);
  Expect.isTrue(f2func is f1);
}