public void ClearItemsFromCart()
{
var newOrderID = _cartController.CreateCart(customer1.ID);
_cartController.AddToCart(newOrderID, item1.ID, 10);
_cartController.AddToCart(newOrderID, item2.ID, 10);
_cartController.ClearCart(newOrderID);
Assert.AreEqual(0, _fakeRepository.Orders.Single(o => o.ID == newOrderID).Items.Count);
}