LibTest/collection/ListBase/ListBase_class_A01_t01.dart

/*
 * 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 ListBase<E> class
 * Implements ListMixin<E>
 * Abstract implementation of a list.
 * All operations are defined in terms of length, operator[], operator[]= and length=,
 * which need to be implemented.
 * @description Checks that List-specific methods work as specified.
 * @author kaigorodov
 */
import "dart:collection";
import "../ListMixin/allListTests.lib.dart";

class MyList<E> extends ListBase<E> {
  List<E> _list;
  
  MyList([int length]): _list=(length==null?new List():new List(length));
  
  E operator [](int index) => _list[index];

  void operator []=(int index, E value) {
    _list[index]=value;
  }

  int get length => _list.length;

  void set length(int newLength) {
    _list.length=newLength;
  }
}
 
List create([int length]) {
  return new MyList(length);
}  

main() {
  test(create);  
}