| /* |
| * Copyright (c) 2016, 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 bool every(bool f(E element)) |
| * Checks whether every element of this iterable satisfies test. |
| * ... returns [false] if any of them make [test] return [false], otherwise |
| * returns [true]. |
| * @description Checks that [true] is always returned for empty iterable. |
| * @author iarkh@unipro.ru |
| */ |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| |
| class MyIterable extends Object with IterableMixin { |
| List _content; |
| MyIterable(List list): _content = list; |
| |
| Iterator get iterator { |
| return _content.iterator; |
| } |
| } |
| |
| main() { |
| MyIterable iterable = new MyIterable([]); |
| Expect.isTrue(iterable.every((var element) { return true; })); |
| Expect.isTrue(iterable.every((var element) { return element > 0; })); |
| Expect.isTrue(iterable.every((var element) { return false; })); |
| Expect.isTrue(iterable.every((var element) { return element < 0; })); |
| Expect.isTrue(iterable.every((var element) { return element > 4; })); |
| } |