LibTest/io/HttpClient/open_A01_t04.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 Future<HttpClientRequest> open(
///  String method,
///  String host,
///  int port,
///  String path
///  )
/// Opens a HTTP connection.
///
/// The HTTP method to use is specified in method, the server is specified using
/// host and port, and the path (including a possible query) is specified using
/// path. The path may also contain a URI fragment, which will be ignored.
///
/// The Host header for the request will be set to the value host:port. This can
/// be overridden through the HttpClientRequest interface before the request is
/// sent. NOTE if host is an IP address this will still be set in the Host
/// header.
///
/// For additional information on the sequence of events during an HTTP
/// transaction, and the objects returned by the futures, see the overall
/// documentation for the class HttpClient.
/// @description Checks that the Host header for the request is set to value
/// host:port
/// @author sgrekhov@unipro.ru
/// @issue 31527

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("GET", request.method);
    Expect.equals("/Xxx", request.uri.toString());
    Expect.equals(localhost, request.headers.host);
    Expect.equals(server.port, request.headers.port);
    request.response.write(helloWorld);
    request.response.close();
    server.close();
    asyncEnd();
  });

  HttpClient client = new HttpClient();
  client.open("get", localhost, server.port, "/Xxx")
      .then((HttpClientRequest request){
    return request.close();
  }).then((HttpClientResponse response) {
    response.cast<List<int>>().transform(utf8.decoder).listen((content) {
      Expect.equals(helloWorld, content);
    });
  });
}

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