| // 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 onError is provided, and this future completes with an error, the onError |
| * callback is called with that error and its stack trace. The onError callback |
| * must accept either one argument or two arguments. If onError accepts two |
| * arguments, it is called with both the error and the stack trace, otherwise |
| * it is called with just the error object. |
| * @description Checks that second parameter to onError callback will receive |
| * null value if error is raised without a stack trace. |
| * @author ilya |
| */ |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var error = new Error(); |
| |
| asyncStart(); |
| |
| new Future.error(error).then((_) {}, onError: (e, st) { |
| Expect.identical(error, e); |
| asyncEnd(); |
| }); |
| } |