public async Task TestEditReservation() { var options = new DbContextOptionsBuilder <ApplicationDbContext>() .UseInMemoryDatabase(Guid.NewGuid().ToString()); var reservationRepository = new EfDeletableEntityRepository <Reservation>(new ApplicationDbContext(options.Options)); var reservationId = Guid.NewGuid().ToString(); var guests = new List <Guest>(); var guestOne = new Guest { FirstName = "Petar", LastName = "Stoqnov", PhoneNumber = "0888888888", CreatedOn = DateTime.UtcNow, }; var guestTwo = new Guest { FirstName = "Dimitar", LastName = "Neykov", PhoneNumber = "0888888888", CreatedOn = DateTime.UtcNow.AddDays(-1), }; guests.Add(guestOne); guests.Add(guestTwo); await reservationRepository.AddAsync(new Reservation { Id = reservationId, ArrivalDate = DateTime.UtcNow, Guests = guests, }); await reservationRepository.SaveChangesAsync(); var reservationsService = new ReservationsService(reservationRepository); await reservationsService.UpdateAsync(Guid.NewGuid().ToString(), reservationId, 1, DateTime.UtcNow.AddDays(1), DateTime.UtcNow, 1, 1, "Georgi", "Petrov", "0888989844", null, 10.00M, true, false, false); var result = reservationRepository.All().FirstOrDefault(); Assert.Equal(DateTime.UtcNow.AddDays(1).Date, result.ArrivalDate.Date); }