| /* |
| * 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 final bool keys |
| * @description Check that [keys] is a read-only property. |
| * @author iarkh@unipro.ru |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| dynamic view = new UnmodifiableMapView( |
| {1 : 1, 2 : 23, 37 : 49}); |
| Expect.throws(() { view.keys = null; }, (e) => e is NoSuchMethodError); |
| } |
