public void Update_Appointment_updates_an_appointment_on_repository()
{
var repository = new InMemoryAppointmentRepository();
repository.Create(MakeAppointment(1, "John"));
var controller = GetAppointmentsController(repository);
controller.Edit(MakeAppointment(1, "Charles"));
Assert.That(repository.FindById(1).Name, Is.EqualTo("Charles"));
}