// Copyright (c) 2011, 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 Stream<T> stream
/// The stream that this controller is controlling.
/// @description Checks that property stream implements Stream interface
/// @author a.semenov@unipro.ru

import "dart:async";
import "../Stream/allTests_A02.lib.dart";

Stream<T> create<T>(Iterable<T> data,
    {bool isError(T element)?, T? defaultValue}) {
  StreamController<T>? sc;
  sc = new StreamController<T>(
      sync: true,
      onListen: () {
        new Future(() {
          for (T e in data) {
            if (sc!.isClosed) {
              break;
            }
            if (isError != null && isError(e)) {
              sc.addError(e as Object);
            } else {
              sc.add(e);
            }
          }
        }).then((_) => sc?.close());
      },
      onCancel: () {
        sc?.close();
      });
  return sc.stream;
}

main() {
  test(create);
}