LibTest/io/NetworkInterface/list_A02_t02.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<List<NetworkInterface>> list({
///     bool includeLoopback: false,
///     bool includeLinkLocal: false,
///     InternetAddressType type: InternetAddressType.any
/// })
/// Query the system for NetworkInterfaces.
/// ...
/// If type is either InternetAddressType.IPv4 or InternetAddressType.IPv6 it
/// will only lookup addresses of the specified type. Default is
/// InternetAddressType.any.
///
/// @description Checks that if parameter 'type' of static method [list] is
/// InternetAddressType.IPv4, only addresses of InternetAddressType.IPv4 type
/// are lookup.
/// @author ngl@unipro.ru

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

main() {
  Future<List<NetworkInterface>> fList = NetworkInterface.list(
      includeLoopback: true,
      includeLinkLocal: true,
      type: InternetAddressType.IPv4);

  asyncStart();
  fList.then((fValue) {
    var addressCount = 0;
    var ipv4Count = 0;
    var ipv6Count = 0;
    for (int i = 0; i < fValue.length; i++) {
      NetworkInterface nwInterface = fValue[i];
      for (int j = 0; j < nwInterface.addresses.length; j++) {
        addressCount++;
        if (nwInterface.addresses[j].type.name == "IPv4") {
          ipv4Count++;
        }
        if (nwInterface.addresses[j].type.name == "IPv6") {
          ipv6Count++;
        }
      }
    }
    Expect.isTrue((ipv6Count == 0) && (addressCount == ipv4Count));
    asyncEnd();
  });
}