| // Copyright (c) 2013, 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. |
| |
| import "package:expect/expect.dart"; |
| import "dart:collection"; |
| |
| class MyList extends ListBase { |
| List list; |
| MyList(this.list); |
| get length => list.length; |
| set length(value) { |
| list.length = value; |
| } |
| |
| operator [](index) => list[index]; |
| operator []=(index, val) { |
| list[index] = val; |
| } |
| |
| toString() => list.toString(); |
| } |
| |
| void testWithoutModification(List list) { |
| var seen = []; |
| list.forEach(seen.add); |
| |
| Expect.listEquals(list, seen); |
| } |
| |
| void testWithModification(List list) { |
| if (list.isEmpty) return; |
| Expect.throws(() => list.forEach((_) => list.add(0)), |
| (e) => e is ConcurrentModificationError); |
| } |
| |
| main() { |
| List fixedLengthList = new List(10); |
| for (int i = 0; i < 10; i++) fixedLengthList[i] = i + 1; |
| |
| List growableList = new List(); |
| growableList.length = 10; |
| for (int i = 0; i < 10; i++) growableList[i] = i + 1; |
| |
| var growableLists = [ |
| [], |
| [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], |
| new MyList([1, 2, 3, 4, 5]), |
| growableList, |
| ]; |
| var fixedLengthLists = [ |
| const [], |
| fixedLengthList, |
| const [1, 2, 3, 4, 5, 6, 7, 8, 9, 10], |
| new MyList(const [1, 2]), |
| ]; |
| |
| for (var list in growableLists) { |
| print(list); |
| testWithoutModification(list); |
| testWithModification(list); |
| } |
| |
| for (var list in fixedLengthLists) { |
| testWithoutModification(list); |
| } |
| } |