| // 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 Future catchError(Function onError, {bool test(Object error)}) |
| /// If test is omitted, it defaults to a function that always returns true. |
| /// @description Checks that [onError] is called if [test] is omitted and the |
| /// returned future completes with value returned by [onError] call |
| /// @author a.semenov@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Completer completer = new Completer(); |
| Future f = completer.future; |
| |
| f.catchError( |
| (Object error) { |
| Expect.equals("!", error); |
| return "@"; |
| } |
| ) |
| .then( |
| (Object value){ |
| Expect.equals("@", value); |
| asyncEnd(); |
| } |
| ); |
| |
| asyncStart(); |
| completer.completeError("!"); |
| } |