private static void AddServiceForRental()
{
RentalManager rentalManager = new RentalManager(new EfRentalDal());
Console.WriteLine("------------------- AddService(Customer customer) Test-------------------\n");
var result = rentalManager.AddService(new Rental()
{
CarId = 2,
CustomerId = 2,
RentDate = DateTime.Today,
});
Console.WriteLine(result.Message);
}