| // 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(dynamic computation()) |
| /// Creates a future containing the result of calling computation |
| /// asynchronously with Timer.run. |
| /// 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 non-future value is returned, the returned future is completed with |
| /// that value. |
| /// @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]; |
| asyncMultiStart(2); |
| Future future = new Future(() => new Future.value(value)); |
| Future future2 = new Future(() => new Future.error(value)); |
| |
| future.then( |
| (x) { |
| Expect.identical(value, x); |
| asyncEnd(); |
| } |
| ); |
| |
| future2.then( |
| (_) { |
| Expect.fail("Created future should complete with error"); |
| }, |
| onError: (x) { |
| Expect.identical(value, x); |
| asyncEnd(); |
| } |
| ); |
| } |