public void Delete_Appointment_redirects_to_index_view_on_success()
{
var appointment = MakeAppointment();
var repository = new InMemoryAppointmentRepository();
repository.Create(appointment);
var controller = GetAppointmentsController(new InMemoryAppointmentRepository());
var result = (RedirectToRouteResult)controller.Delete(appointment.Id);
Assert.That(result.RouteValues["action"], Is.EqualTo("Index"));
}