| /* |
| * 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 catchError(Function onError, {bool test(Object error)}) |
| * If this future completes with an error, then test is first called with |
| * the error value. |
| * If test returns false, the exception is not handled by this catchError, |
| * and the returned future completes with the same error and stack trace as |
| * this future. |
| * If test returns true, onError is called with the error and possibly stack |
| * trace, and the returned future is completed with the result of this call in |
| * exactly the same way as for then's onError. |
| * @description Checks that [test] is called first with the error value, if |
| * future completes with an error |
| * @author a.semenov@unipro.ru |
| */ |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Completer completer = new Completer(); |
| Future f = completer.future; |
| List log = []; |
| |
| f.catchError( |
| (Object error) { |
| log.add(2); |
| log.add(error); |
| }, |
| test: (Object error) { |
| log.add(1); |
| log.add(error); |
| return true; |
| } |
| ).then( |
| (_) { |
| Expect.listEquals([1, "!", 2, "!"], log); |
| asyncEnd(); |
| } |
| ); |
| |
| asyncStart(); |
| completer.completeError("!"); |
| } |