public void GetOrderIdListTest()
{
string[] idList = { "item0", "item1" };
_itemOrder.AddToOrder(idList[0]);
_itemOrder.AddToOrder(idList[1]);
Assert.AreEqual(2, _itemOrder.GetOrderIdList().Count);
foreach (string id in idList)
{
Assert.IsTrue(_itemOrder.GetOrderIdList().Contains(id));
}
}