| /* |
| * 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 Iterable<E> take(int n) |
| * Returns an Iterable with at most n elements. |
| * The returned Iterable may contain fewer than n elements, if this contains fewer than n elements. |
| * @description checks that an Iterable that contains the first n elements is returned. |
| * @author kaigorodov |
| */ |
| |
| import "dart:collection"; |
| import "dart:math" as Math; |
| import "../../../Utils/expect.dart"; |
| |
| check(List a, int n) { |
| DoubleLinkedQueue queue = new DoubleLinkedQueue.from(a); |
| Iterable it=queue.take(n); |
| Expect.equals(Math.min(queue.length, n), it.length); |
| int k=0; |
| for (var el in it) { |
| Expect.equals(queue.elementAt(k), el); |
| k++; |
| } |
| } |
| |
| main() { |
| check([1,2,-3,4], 4); |
| check([1,2,-3,4], 0); |
| check([11,2,-3,4], 2); |
| check([1,22,-3,4], 4); |
| check(const[1,2,-5,-6, 100], 0); |
| check(const[1, -1, 2,-5,-6], 1); |
| check(const[0,0,1,2,-5,-6], 2); |
| check(const[0,0,1,2,-5,-6], 6); |
| } |