| // 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.microtask(dynamic computation()) |
| /// If calling computation returns a Future, completion of the created future |
| /// will wait until the returned future completes, and will then complete with |
| /// the same result. |
| /// @description Checks that if computation() returns a future, the returned |
| /// future is completed first and then created future is completed with the same |
| /// result. |
| /// @author ilya |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var value = [1, 2, 3]; |
| var completer = new Completer(); |
| Future future = new Future.microtask(() => completer.future); |
| |
| var completer2 = new Completer(); |
| Future future2 = new Future.microtask(() => completer2.future); |
| |
| asyncMultiStart(2); |
| |
| future |
| .then((x) { |
| Expect.isTrue(completer.isCompleted); |
| Expect.identical(value, x); |
| asyncEnd(); |
| }); |
| |
| future2.then( |
| (x) { |
| Expect.fail('created Future should complete with error'); |
| }, |
| onError: (x) { |
| Expect.isTrue(completer2.isCompleted); |
| Expect.identical(value, x); |
| asyncEnd(); |
| } |
| ); |
| |
| completer.complete(value); |
| completer2.completeError(value); |
| } |