LibTest/io/RawSecureServerSocket/first_A03_t02.dart

// 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.

// @dart = 2.9

/// @assertion  Future<RawSecureSocket> first
/// The first element of the stream.
/// . . .
/// Except for the type of the error, this method is equivalent to
/// this.elementAt(0).
///
/// @description Checks that if this is empty, method this.elementAt(0) completes
/// with an error not equal to the error thrown by [first].
/// @author ngl@unipro.ru

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

check(InternetAddress address) {
  asyncStart();
  SecurityContext sc = new SecurityContext(withTrustedRoots: true);
  RawSecureServerSocket.bind(address, 0, sc).then((server) {
    server.elementAt(0).then((event) {
      Expect.fail('Future should be completed with Error');
    }, onError: (error) {
      Expect.isTrue(error is RangeError);
      asyncEnd();
    });
    server.close();
  });
}

main() {
  check(InternetAddress.anyIPv4);
  check(InternetAddress.anyIPv6);
  check(InternetAddress.loopbackIPv4);
  check(InternetAddress.loopbackIPv6);
}