public void UpdateAutoTest()
        {
            using (AutoReservationEntities context = new AutoReservationEntities())
            {
                TestEnvironmentHelper.InitializeTestData();
                AutoReservationBusinessComponent arbc = new AutoReservationBusinessComponent();

                var res = (from auto in context.Autos select auto).FirstOrDefault().Id;
                //Console.WriteLine("Abgefragte Id:" + res);

                Auto autoOriginal = arbc.GetAuto(res);
                Auto autoModified = arbc.GetAuto(res);
                //Console.WriteLine("Marke original vorher:" + autoOriginal.Marke);
                //Console.WriteLine("Marke modified vorher:" + autoModified.Marke);

                autoModified.Marke = "Fiat Punto Abart";
                arbc.EditAuto(autoOriginal, autoModified);

                //Auto autoControl = arbc.GetAuto(res);
                //Console.WriteLine("Marke original nachher:" + autoOriginal.Marke);
                //Console.WriteLine("Marke control  nachher:" + autoControl.Marke);
                //Console.WriteLine("Marke modified nachher:" + autoModified.Marke);

                Assert.AreEqual(autoOriginal.Marke, autoModified.Marke, "UpdateAutoTest: Autos sind nicht gleich nach Update");
            }
        }