| /* |
| * 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 map(f(E element)) |
| * As long as the returned [Iterable] is not iterated over, the supplied |
| * function [f] will not be invoked. |
| * @description Checks that the supplied function [f] will not be invoked if the |
| * returned [Iterable] is not iterated over. |
| * @author kaigorodov |
| */ |
| import "../../../Utils/expect.dart"; |
| import "dart:collection"; |
| import "LinkedList.lib.dart"; |
| |
| bool invoked = false; |
| |
| f(var element) { |
| invoked = true; |
| return element; |
| } |
| |
| void check(List<int> a) { |
| LinkedList<MyLinkedListEntry<int>> llist = toLinkedList(a); |
| llist.map(f); |
| } |
| |
| main() { |
| List<int> a = new List<int>(); |
| check(a); |
| a.add(22); |
| check(a); |
| a.add(11); |
| check(a); |
| a.add(11); |
| check(a); |
| for (int k = -100; k < 200; k++) { |
| a.add(k); |
| } |
| check(a); |
| Expect.isFalse(invoked); |
| } |