tests/standalone_2/io/http_parser_header_add_test.dart

// Copyright (c) 2021, 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.
//
// Verify that FormatException is thrown when HttpClient userAgent has
// invalid value.

// @dart = 2.9

import "dart:async";
import "dart:io";
import "package:async_helper/async_helper.dart";
import "package:expect/expect.dart";

Future<void> testFormatException() async {
  final server = await HttpServer.bind("127.0.0.1", 0);
  server.listen((HttpRequest request) {
    request.response.statusCode = 200;
    request.response.close();
  });

  final completer = Completer<void>();
  // The ’ character is U+2019 RIGHT SINGLE QUOTATION MARK.
  final client = HttpClient()..userAgent = 'Bob’s browser';
  asyncExpectThrows<FormatException>(() async {
    try {
      await client.open("CONNECT", "127.0.0.1", server.port, "/");
    } finally {
      client.close(force: true);
      server.close();
      completer.complete();
    }
  });
  await completer.future;
}

main() {
  asyncTest(testFormatException);
}