public void CreateAppointment_ReturnsAViewResult()
{
var controller = new CustomerController();
var user = new CustomerViewModel();
user.Username = "";
var result = controller.CreateAppointment(user);
var viewResult = Assert.IsType <ViewResult>(result);
var model = Assert.IsAssignableFrom <AppointmentViewModel>(viewResult.ViewData.Model);
Assert.Equal("", model.CustomerUsername);
}
