public async Task <IActionResult> PutBookTestnew(int id, BookTestnew bookTestnew)
        {
            if (id != bookTestnew.BookId)
            {
                return(BadRequest());
            }

            _context.Entry(bookTestnew).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!BookTestnewExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult <BookTestnew> > PostBookTestnew(BookTestnew bookTestnew)
        {
            _context.BookTestnew.Add(bookTestnew);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (BookTestnewExists(bookTestnew.BookId))
                {
                    return(Conflict());
                }
                else
                {
                    throw;
                }
            }

            return(CreatedAtAction("GetBookTestnew", new { id = bookTestnew.BookId }, bookTestnew));
        }