// 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.

// @dart = 2.9

/// @assertion void complete([T value])
/// Completes future with the supplied values.
/// The value must be either a value of type T or a future of type Future<T>.
/// If the value is itself a future, the completer will wait for that future to
/// complete, and complete with the same result, whether it is a success or an
/// error.
/// All listeners on the future are informed about the value.
/// @description Checks that if a value is another future which completes with
/// the error e, completer's future will complete with the error e.
/// @author ilya


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

main() {
  var completer = new Completer();
  var future = completer.future;

  var error = new Error();

  asyncStart();

  future.catchError((x) {
    Expect.identical(error, x);
    asyncEnd();
  });

  completer.complete(new Future.error(error));
}