// 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<Set<RawSocketEvent>> toSet ()
/// Collects the data of this stream in a Set.
///
/// The returned set is the same type as returned by new Set<T>().
///
/// @description Checks that method [toSet] collects the data of this stream in
/// a Set.
/// @author ngl@unipro.ru

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

check(dataExpected, [bool no_write_events = false]) {
  asyncStart();
  var address = InternetAddress.loopbackIPv4;
  RawDatagramSocket.bind(address, 0).then((producer) {
    RawDatagramSocket.bind(address, 0).then((receiver) {
      if (no_write_events) {
        receiver.writeEventsEnabled = false;
      }
      int sent = 0;
      producer.send([sent++], address, receiver.port);
      producer.send([sent++], address, receiver.port);
      producer.send([sent++], address, receiver.port);
      producer.close();

      Stream bcs = receiver.asBroadcastStream();
      Future fSet = bcs.toSet();
      fSet.then((set) {
        Expect.setEquals(dataExpected, set);
      }).whenComplete(() {
        asyncEnd();
      });

      bcs.listen((event) {
        receiver.receive();
      });

      new Timer(const Duration(milliseconds: 200), () {
        Expect.isNull(receiver.receive());
        receiver.close();
      });
    });
  });
}

main() {
  check([RawSocketEvent.write, RawSocketEvent.read, RawSocketEvent.closed]);
  check([RawSocketEvent.read, RawSocketEvent.closed], true);
}