public async void AddAsync_AddAsyncToConext()
{
var booking = BookingGenerator.Create();
using (var context = new booking_facilitiesContext(contextOptions))
{
context.Database.EnsureCreated();
var repository = new BookingRepository(context);
await repository.AddAsync(booking);
Assert.Equal(1, await context.Booking.CountAsync());
Assert.Equal(booking, await context.Booking.SingleAsync());
}
}