LibTest/io/RawDatagramSocket/pipe_A02_t01.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.

/// @assertion Future pipe(StreamConsumer<RawSocketEvent> streamConsumer)
/// . . .
/// All events of this stream are added to streamConsumer using
/// StreamConsumer.addStream. The streamConsumer is closed when this stream has
/// been successfully added to it - when the future returned by addStream
/// completes without an error.
///
/// Returns a future which completes when the stream has been consumed and the
/// consumer has been closed.
///
/// @description Checks that the streamConsumer is closed (as StreamController
/// instance is closed) when the future returned by  pipe completes without an
/// error.
/// @author ngl@unipro.ru

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

main() {
  asyncStart();
  var address = InternetAddress.loopbackIPv4;
  RawDatagramSocket.bind(address, 0).then((producer) {
    RawDatagramSocket.bind(address, 0).then((receiver) {
      int sent = 0;
      List list = [];
      StreamController<RawSocketEvent> sc =
          new StreamController<RawSocketEvent>();
      producer.send([sent++], address, receiver.port);
      producer.send([sent], address, receiver.port);
      producer.close();
      receiver.close();

      sc.stream.listen((x) {
        list.add(x);
      });

      Future fValue = receiver.pipe(sc);
      fValue.then((value) {
        Expect.isTrue(sc.isClosed);
        Expect.listEquals([RawSocketEvent.closed], list);
      }).whenComplete(() {
        asyncEnd();
      });
    });
  });
}