| /* |
| * 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 An equality expression of the form e1 != e2 is |
| * equivalent to the expression !(e1 == e2). |
| * @description Checks that expression of the form e1 != e2 is |
| * equivalent to the expression !(e1 == e2). |
| * @author msyabro |
| * @reviewer kaigorodov |
| */ |
| import "../../Utils/expect.dart"; |
| |
| class A{ |
| operator==(var val) { |
| return identical(this, val); |
| } |
| } |
| |
| main() { |
| A a = new A(); |
| A b = new A(); |
| Expect.equals(a != a, !(a==a)); |
| Expect.equals(a != b, !(a==b)); |
| } |
