// 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 Future<List> wait(Iterable<Future> futures,
///                {bool eagerError: false, void cleanUp(successValue)})
/// Wait for all the given futures to complete and collect their values.
/// Returns a future which will complete once all the futures in a list are
/// complete.
/// @description Checks that the returned future is completed when all futures
/// in the list are completed.
/// @author a.semenov@unipro.ru

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

main() {
  List<Completer> completers = new List.generate(5, (_) => new Completer());
  Iterable<Future> futures = completers.map((Completer c) => c.future);

  bool futureCompleted = false;
  asyncStart();
  Future.wait(futures).then((value) {
    futureCompleted = true;
    List expected = new List.generate(completers.length, (i) => i);
    Expect.listEquals(expected, value);
    asyncEnd();
  });

  int i = 0;
  new Timer.periodic(durationInMilliseconds(50), (Timer t) {
    Expect.isFalse(futureCompleted);
    completers[i].complete(i);
    if (++i == completers.length) {
      t.cancel();
    }
  });
}