LibTest/async/Future/then_A03_t02.dart

// 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 then(dynamic onValue(T value), {Function onError})
///    If the callback returns a Future, the future returned by then will be
/// completed with the same result as the future returned by the callback.
/// @description Checks that if returned future is this future, f completes with
/// this future's value.
/// @author ilya

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

main() {
  Completer completer = new Completer();
  Future f = completer.future;

  asyncStart();

  f.then((x) => f).then((x) {
    Expect.equals(1, x);
    asyncEnd();
  });

  completer.complete(1);
}