// 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 Map<String, String> parameters
/// Gets the map of parameters.
///
/// This map cannot be modified. Invoking any operation which would modify the
/// map will throw UnsupportedError.
/// @description Checks that UnsupportedError is thrown if parameters map is
/// modified
/// @author sgrekhov@unipro.ru

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

main() {
  ContentType contentType = new ContentType("text", "html", charset: "utf-8",
      parameters: {"a": "b", "charset": "cp1251"});

  Expect.throws(() {contentType.parameters.addAll({"x": "y"});},
      (e) => e is UnsupportedError);
}