LibTest/io/WebSocket/closeReason_A01_t01.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 String closeReason
/// The close reason set when the WebSocket connection is closed. If there is no
/// close reason available this property will be null
/// @description Checks that the [closeReason] is null when connection is not
/// closed and is set to a string value if the WebSocket connection is closed.
/// @author ngl@unipro.ru

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

main() {
  HttpServer.bind("127.0.0.1", 0).then((server) {
    server.listen((request) {
      WebSocketTransformer
          .upgrade(request)
          .then((websocket) {
        websocket.close();
      });
    });

    var webs = WebSocket.connect("ws://127.0.0.1:${server.port}/");
    webs.then((client) {
      Expect.isTrue(client is WebSocket);
      Expect.isTrue(client.closeReason == null);
      client.close().then((_) {
        Expect.isTrue(client.closeReason is String);
      });
      server.close();
    });
  });
}