public void SetUp()
		{
			_customer1 = new Customer("bamboo");
			_customer2 = new Customer("prevalence");
			_list = new ReaderWriterList();
			_list.Add(_customer1);
			_list.Add(_customer2);
		}		
		public void TestMapEnumerable()
		{
			ReaderWriterList list = new ReaderWriterList();
			list.Add(new Customer("bamboo"));
			list.Add(new Customer("prevalence"));
			list.Map(_list);
			AssertSame(_customer1, list[0]);
			AssertSame(_customer2, list[1]);
		}