tests/lib/async/future_value_chain2_test.dart

// Copyright (c) 2013, 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.

import 'dart:async';

import 'package:expect/async_helper.dart';
import 'package:expect/expect.dart';

main() {
  asyncStart();
  var errorFuture = new Future.error(499);
  var valueChainFuture = new Future.sync(() => errorFuture);
  // The errorFuture must not be propagated immediately as we would otherwise
  // not have time to catch the error.
  valueChainFuture.catchError((error) {
    Expect.equals(499, error);
    asyncEnd();
  });
}