// 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 Future<HttpClientRequest> headUrl(
///  Uri url
///  )
/// Opens an HTTP connection using the HEAD method.
///
/// The URL to use is specified in url.
///
/// See openUrl for details.
/// @description Checks that this method opens an HTTP connection using the HEAD
/// method
/// @author sgrekhov@unipro.ru

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

var localhost = InternetAddress.loopbackIPv4.address;

test() async {
  String helloWorld = "Hello test world!";
  HttpServer server = await HttpServer.bind(localhost, 0);
  server.listen((HttpRequest request) {
    Expect.equals("HEAD", request.method);
    Expect.equals("/xxx", request.uri.toString());
    request.response.write(helloWorld);
    request.response.close();
    server.close();
    asyncEnd();
  });

  HttpClient client = new HttpClient();
  client.headUrl(Uri.parse("http://${localhost}:${server.port}/xxx"))
    .then((HttpClientRequest request) {
      Expect.equals("HEAD", request.method);
      return request.close();
    }).then((HttpClientResponse response) {
      response.cast<List<int>>().transform(utf8.decoder).listen((content) {
        Expect.equals(helloWorld, content);
    });
  });
}

main() {
  asyncStart();
  test();
}