Language/Classes/Constructors/implicit_constructor_t04.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 Iff no constructor is specified for a class C, it implicitly has
 * a default constructor C() : super() {}, unless C is class Object.
 * @description Checks that it is possible to create an instance of the class
 * that doesn't declare any constructors. Use type aliases
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases
import "../../../Utils/expect.dart";

class C {
  var x;
}
typedef CAlias = C;

main() {
  CAlias c = new CAlias();
  Expect.isTrue(c is C);
  Expect.equals(null, c.x);

  CAlias c2 = new C();
  Expect.isTrue(c2 is C);
  Expect.equals(null, c2.x);
}