| /* |
| * 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 Iterable<E> take(int count) |
| * The returned [Iterable] may contain fewer than [count] elements, if this |
| * contains fewer than [count] elements. |
| * @description Checks that if an [Iterable] contains less elements than |
| * [count], all the elements are returned. |
| * @author iarkh@unipro.ru |
| */ |
| import "dart:collection"; |
| import "dart:math" as Math; |
| import "../../../Utils/expect.dart"; |
| |
| class MyIterable<int> extends Object with IterableMixin { |
| List _content; |
| MyIterable(List list): _content = list; |
| |
| Iterator get iterator { |
| return _content.iterator; |
| } |
| } |
| |
| check(List list, int n, int expected) { |
| IterableMixin iterable = new MyIterable(list); |
| Iterable res = iterable.take(n); |
| Expect.equals(Math.min(iterable.length, n), res.length); |
| int k = 0; |
| for (var el in res) { |
| Expect.equals(iterable.elementAt(k), el); |
| k++; |
| } |
| } |
| |
| main() { |
| check([1, 2, -3, 4], 6, 4); |
| check([], 2, 0); |
| } |