| // 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 forEach(Iterable input, dynamic f(element)) |
| /// Returns a Future that completes when all elements have been processed. |
| /// @description Checks that returned future completes when all elements have |
| /// been processed. |
| /// @author a.semenov@unipro.ru |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| void check(List input){ |
| List<Completer> c = new List.generate(input.length, (_) => new Completer()); |
| int k = 0; |
| |
| dynamic f(element) { |
| return c[k++].future; |
| } |
| |
| asyncStart(); |
| Future.forEach(input, f).then( |
| (_) { |
| Expect.isTrue(c.fold(true, (bool v, Completer x) => v && x.isCompleted)); |
| asyncEnd(); |
| } |
| ); |
| // complete the futures in reverse order |
| c.reversed.forEach((Completer x) => x.complete(null)); |
| } |
| |
| main() { |
| check([0, 1, 2, 3, 4]); |
| check(["a", "b", "c", "d"]); |
| check([]); |
| check([0, null, "a", 3.14, true, false]); |
| } |