| /* |
| * Copyright (c) 2017, 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(dynamic f(E element)) |
| * Returns a new lazy [Iterable] with elements that are created by calling [f] |
| * on each element of this [Iterable] in iteration order. |
| * This method returns a view of the mapped elements. |
| * @description Checks that the resulting [Iterable] contains all the results of |
| * [f(e)]. |
| * @author iarkh@unipro.ru |
| */ |
| |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| class MyIterable extends Object with IterableMixin { |
| List _content; |
| MyIterable(List list): _content = list; |
| |
| Iterator get iterator { |
| return _content.iterator; |
| } |
| } |
| |
| f(var element) { |
| return [element]; |
| } |
| |
| void check(List list) { |
| IterableMixin iterable = new MyIterable(list); |
| |
| int count = 0; |
| Iterable res = iterable.map(f); |
| for (var x in res) { |
| Expect.listEquals(f(iterable.elementAt(count)), x); |
| count++; |
| } |
| Expect.equals(iterable.length, count); |
| } |
| |
| main() { |
| check([]); |
| check([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]); |
| check([-7, null, "testme", "testme12345", new Error(), 1, 1, 1, 2, 3, ""]); |
| } |