public async void StartAppointmentShouldChangeTheStatusToHappening() { var options = new DbContextOptionsBuilder <ApplicationDbContext>() .UseInMemoryDatabase(Guid.NewGuid().ToString()); var appointmentsRepository = new EfDeletableEntityRepository <Appointment>(new ApplicationDbContext(options.Options)); var notificationsRepository = new EfDeletableEntityRepository <Notification>(new ApplicationDbContext(options.Options)); var appointmentsService = new AppointmentsService(notificationsRepository, appointmentsRepository); var appointment = new Appointment { Status = AppointmentStatus.Unprocessed, Date = DateTime.UtcNow, StartTime = DateTime.UtcNow, EndTime = DateTime.UtcNow.AddMinutes(5), DogsitterId = "123", OwnerId = "321", }; await appointmentsService.CreateNewAppointment(appointment); await appointmentsService.StartAppointment(appointment.Id); Assert.Equal(AppointmentStatus.Happening.ToString(), appointmentsService.GetAppointment(appointment.Id).Status.ToString()); }