| // 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 T operator [](Object object) |
| /// Gets the value of this Expando's property on the given object. If the object |
| /// hasn't been expanded, the method returns null. |
| /// The object must not be a number, a string, a boolean or null. |
| /// @description Checks that this operator returns null for a freshly expanded |
| /// object(s). |
| /// @author rodionov |
| |
| import "../../../Utils/expect.dart"; |
| |
| class A {} |
| class B extends A {} |
| |
| main() { |
| Expando exp = new Expando("exp"); |
| var o1 = new Object(); |
| var o2 = new A(); |
| var o3 = new B(); |
| Expect.isNull(exp[o1]); |
| Expect.isNull(exp[o2]); |
| Expect.isNull(exp[o3]); |
| } |