public void CreatingACustomerTwoTimes_IsNotAllowed()
        {
            this.session.Save(new Customer { Name = "Pippo", VATNumber = "12345678901" });
            var controller = new CustomersController(this.session);
            var viewModel = new CreateOrEditCustomerViewModel { Name = "Pippo", VATNumber = "12345678901" };

            var result = controller.Create(viewModel);

            var viewResult = result as ViewResult;
            viewResult.Should().Not.Be.Null();
            var error = viewResult.ViewData.ModelState["VATNumber"].Errors[0];
            Assert.AreEqual("Un cliente con stessa partita Iva è già presente.", error.ErrorMessage);
        }
        public void CreatingANewCustomer_AddsItToTheDb()
        {
            var controller = new CustomersController(this.session);

            var viewModel = new CreateOrEditCustomerViewModel { Name = "Pippo", VATNumber="12345678901" };
            
            var result = controller.Create(viewModel);

            var redirectResult = result as RedirectToRouteResult;
            var action = redirectResult.RouteValues["action"];

            var reportOnDb = this.session.Get<Customer>(1);
            reportOnDb.Should().Not.Be.Null();
        }