| // 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); |
| } |
