| // Copyright (c) 2017, 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 abstract V operator [](Object key) |
| /// Returns the value for the given [key] or [null] if [key] is not in the map. |
| /// @description Checks that operator [] returns correct value for the given |
| /// [key]. |
| /// @author iarkh@unipro.ru |
| |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| UnmodifiableMapView view = new UnmodifiableMapView({1 : 1, 2 : 23, 37 : 49}); |
| Expect.equals(1, view[1]); |
| Expect.equals(23, view[2]); |
| Expect.equals(49, view[37]); |
| Expect.isNull(view[0]); |
| Expect.isNull(view[55]); |
| Expect.isNull(view["test"]); |
| Expect.isNull(view[null]); |
| } |