public void Execute()
        {
            SelectCarType();
            Brand brand = SelectBrand();

            SelectColour();
            IColourDecoration colourDecoration = SelectColourDeco();
            EngineClass       engine           = SelectEngine();

            SelectWheel();
            IWheelDeco  wheelDeco   = SelectWheelDeco();
            Numberplate numberplate = AssignNumberplate();


            IWheel wheel = (IWheel)Activator.CreateInstance(wheelList[listOfIndex.Last()], wheelDeco);

            listOfIndex.RemoveAt(listOfIndex.Count - 1);
            ICarColour carColour = (ICarColour)Activator.CreateInstance(carColourList[listOfIndex.Last()], colourDecoration);

            listOfIndex.RemoveAt(listOfIndex.Count - 1);

            Vehicle vehicle = (Vehicle)Activator.CreateInstance(types[listOfIndex.Last()], new object[] { carColour, wheel, brand, numberplate, engine });

            Console.WriteLine("Congratulation you successfully added a new vehicle");

            carDealer.AddVehicleToList(vehicle);
            command = new PrintVehicleCommand()
            {
                List = carDealer.Vehicles
            };
            command.Execute();
            listOfIndex.Clear();
        }
        public void ChangePriceCommandTest()
        {
            CarDealer carDealer = new CarDealer();
            Vehicle   veh1      = new Car(new Black(new Matt()), new Summer(new SteelRims()), new VW(), new Numberplate("12-GG-13"), new Diesel());
            Vehicle   veh2      = new Car(new White(new Shiney()), new Winter(new AluRims()), new BMW(), new Numberplate("12-yy-99"), new Benzin());
            Vehicle   veh3      = new Car(new Green(new Metallic()), new Both(new SpareTire()), new Mercedes(), new Numberplate("24-04-09"), new Electro());

            carDealer.AddVehicleToList(veh1);
            carDealer.AddVehicleToList(veh2);
            carDealer.AddVehicleToList(veh3);

            Assert.Equal(1, veh1.ID);
            Assert.Equal(2, veh2.ID);
            Assert.Equal(3, veh3.ID);

            Assert.Equal(3, carDealer.Vehicles.Count);
        }