| // 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<T> whenComplete(action()) |
| /// If the call to action returns a Future, f2, then completion of f is delayed |
| /// until f2 completes. If f2 completes with an error, that will be the result |
| /// of f too. |
| /// @description Checks that if the call to action returns a Future, f2, then |
| /// completion of f is delayed until f2 completes. Checks that if f2 completes |
| /// with an error, that will be the result of f too. |
| /// @author kaigorodov |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| int value = 20; |
| |
| Completer completer = new Completer(); |
| Future f0 = completer.future; |
| Completer completer2 = new Completer(); |
| Future f2 = completer2.future; |
| Future f = f0.whenComplete(() {return f2;}); |
| |
| asyncStart(); |
| f.then( |
| (var v) { |
| Expect.fail("Returned future should complete with error"); |
| }, |
| onError: (Object e) { |
| Expect.equals(value, e); |
| asyncEnd(); |
| } |
| ); |
| |
| completer.complete(1); |
| |
| completer2.completeError(value); |
| } |
| |