LibTest/io/WebSocketTransformer/WebSocketTransformer_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
/// WebSocketTransformer({
///     dynamic protocolSelector(List<String> protocols),
///     CompressionOptions compression: CompressionOptions.compressionDefault
/// })
/// Create a new WebSocketTransformer.
/// If protocolSelector is provided, protocolSelector will be called to select
/// what protocol to use, if any were provided by the client. protocolSelector
/// is should return either a String or a Future completing with a String.
/// The String must exist in the list of protocols.
/// @description CChecks that this constructor with [protocolSelector] parameter
/// ([selector] return a Future completing with a String) creates a new
/// WebSocketTransformer object.
/// @author ngl@unipro.ru

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

main() {
  var protocols = ["p1.com", "p2.com"];
  Future selector(List<String> receivedProtocols) async {
    Expect.listEquals(protocols, receivedProtocols);
    return (await protocols[0]);
  }
  asyncStart();
  var v = new WebSocketTransformer(protocolSelector: selector);
  Expect.isTrue(v is WebSocketTransformer);
  asyncEnd();
}