| /* |
| * 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 factory Future.microtask(computation()) |
| * Creates a future containing the result of calling computation |
| * asynchronously with scheduleMicrotask. |
| * if the result of executing computation throws, the returned future is |
| * completed with the error. |
| * If the returned value is itself a Future, completion of the created |
| * future will wait until the returned future completes, and will then |
| * complete with the same result. |
| * If a value is returned, it becomes the result of the created future. |
| * @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/async_utils.dart"; |
| 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(); |
| }) |
| .catchError((x) { |
| Expect.fail('should not be called'); |
| }); |
| |
| future2 |
| .then((x) { |
| Expect.fail('should not be called'); |
| }) |
| .catchError((x) { |
| Expect.isTrue(completer2.isCompleted); |
| Expect.identical(value, x); |
| asyncEnd(); |
| }); |
| |
| completer.complete(value); |
| completer2.completeError(value); |
| } |