// Copyright (c) 2018, 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 int contentLength
/// Returns the content length of the response body. Returns -1 if the size of
/// the response body is not known in advance.
///
/// If the content length needs to be set, it must be set before the body is
/// written to. Setting the reason phrase after writing to the body will throw a
/// StateError.
/// @description Checks that it is an Exception if the content length is set
/// after the body is written to
/// @author sgrekhov@unipro.ru

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

var localhost = InternetAddress.loopbackIPv4.address;

test(String method) async {
  asyncStart();
  String helloWorld = "Hello test world!";
  HttpServer server = await HttpServer.bind(localhost, 0);
  server.listen((HttpRequest request) {
    request.response.write(helloWorld);
    Expect.throws(() {request.response.contentLength = helloWorld.length;});
    request.response.close();
    server.close();
  });

  HttpClient client = new HttpClient();
  client.open(method, localhost, server.port, "")
      .then((HttpClientRequest request) {
    return request.close();
  }).then((HttpClientResponse response) {
    Expect.equals(-1, response.contentLength);
    response.cast<List<int>>().transform(utf8.decoder).listen((content) {});
    asyncEnd();
  });
}

main() {
  test("get");
  test("head");
  test("delete");
  test("put");
  test("post");
  test("patch");
}