| // 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 Map<K, V> abstract class |
| /// An unordered collection of key-value pairs, from which you retrieve a value |
| /// by using its associated key. |
| /// Each key must be unique. Null values are supported, but null keys are not. |
| /// @description Checks that null values are supported. |
| /// @author msyabro |
| |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Map<String, Object?> map = new Map<String, Object?>(); |
| map["1"] = null; |
| Expect.isTrue(map["1"] == null); |
| } |