public async void AddAsync_AddsToConext()
        {
            var facility = FacilityGenerator.Create();

            using (var context = new booking_facilitiesContext(contextOptions))
            {
                context.Database.EnsureCreated();
                var repository = new FacilityRepository(context);
                await repository.AddAsync(facility);

                Assert.Equal(1, await context.Facility.CountAsync());
                Assert.Equal(facility, await context.Facility.SingleAsync());
            }
        }