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51a459e9a2
R=lrn@google.com Review URL: https://codereview.chromium.org//14556010 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@22365 260f80e4-7a28-3924-810f-c04153c831b5
62 lines
1.5 KiB
Dart
62 lines
1.5 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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import "dart:collection";
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class MyList extends ListBase {
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List list;
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MyList(this.list);
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get length => list.length;
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set length(value) { list.length = value; }
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operator [](index) => list[index];
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operator []=(index, val) { list[index] = val; }
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toString() => list.toString();
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}
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void testWithoutModification(List list) {
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var seen = [];
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list.forEach(seen.add);
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Expect.listEquals(list, seen);
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}
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void testWithModification(List list) {
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if (list.isEmpty) return;
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Expect.throws(() => list.forEach((_) => list.add(0)),
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(e) => e is ConcurrentModificationError);
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}
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main() {
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List fixedLengthList = new List(10);
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for (int i = 0; i < 10; i++) fixedLengthList[i] = i + 1;
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List growableList = new List();
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growableList.length = 10;
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for (int i = 0; i < 10; i++) growableList[i] = i + 1;
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var growableLists = [
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[],
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
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new MyList([1, 2, 3, 4, 5]),
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growableList,
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];
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var fixedLengthLists = [
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const [],
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fixedLengthList,
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const [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
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new MyList(const [1, 2]),
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];
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for (var list in growableLists) {
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print(list);
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testWithoutModification(list);
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testWithModification(list);
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}
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for (var list in fixedLengthLists) {
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testWithoutModification(list);
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}
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}
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