LibTest/collection/UnmodifiableMapView/clear_A01_t01.test.dart

// 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.

// @dart = 2.9

/// @assertion void clear()
/// This operation is not supported.
/// @description Checks that [clear] method is not supported.
/// @author iarkh@unipro.ru

import "dart:collection";
import "../../../Utils/expect.dart";

main() {
  UnmodifiableMapView view = new UnmodifiableMapView({});
  Expect.throws(() { view.clear(); }, (e) => e is UnsupportedError);

  view = new UnmodifiableMapView({1 : 2, 13: 29});
  Expect.throws(() { view.clear(); }, (e) => e is UnsupportedError);
}