| // 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 |
| /// a stack trace. |
| /// @author ilya |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Future future; |
| var stackTrace; |
| var error = new Error(); |
| |
| asyncStart(); |
| |
| try { |
| throw error; |
| } catch(e, st) { |
| stackTrace = st; |
| future = new Future.error(e, st); |
| } |
| |
| future.then((_) {}, onError: (e, st) { |
| Expect.identical(error, e); |
| Expect.identical(stackTrace, st); |
| asyncEnd(); |
| }); |
| } |