static MachineDal()
{
ProductDal prodductDal = new ProductDal();
CashDal cashDal = new CashDal();
IList <Product> products = prodductDal.GetAllProducts();
CashRegister cashInHand = cashDal.GetAllCash();
_machine = new Machine(products, cashInHand);
}
public MachineDal(ProductDal prodductDal)
{
_prodductDal = prodductDal;
}