// 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 CLASS  Stdout
/// In some situations this blocking behavior is undesirable as it does not
/// provide the same non-blocking behavior as [dart:io] in general exposes. Use
/// the property [nonBlocking] to get an [IOSink] which has the non-blocking
/// behavior.
/// @description Checks that stream is not blocked if [nonBlocking] [IOSink] is
/// used.
/// @author iarkh@unipro.ru

import "dart:async";
import "dart:io";

test(Stdout sink) async {
  Stream<List> stream = new Stream<List<int>>.fromIterable(
      [[1, 2, 3, 4, 5], [12], [3, 22]]);
  sink.nonBlocking.addStream(stream).then((x) {
    new Future.delayed(new Duration(seconds: 3));
  });
  sink.writeln();
  sink.writeAll([1, 2, 48, "abc"], ",");
  sink.write("This is a test");
  sink.writeln("This is a test1");
  sink.add([1, 2, 3]);
}

main() async {
  test(stdout);
  test(stderr);
}