[TestClass]
    public class PersonManagerTests
    {
        [TestMethod]
        public void Is_getBookDetails_working()
        {
            Person person = new Person();
            var mock = new Mock<IPersonDal>();
            //_personManager.GetirBookDetails(person);
            var manager = new PersonManager(mock.Object);
            if (manager.GetirBookDetails(person) == null)
            {
                throw new Exception("null geldi");
            }
           
        }
    }
    public interface IPersonDal : IEntityRepository<Person>
    {
        List<BookDetail> GetBookDetails(Person person);
    }
    public class EfPersonDal : EfEntityRepositoryBase<Person, ELibraryContext>, IPersonDal
    {
        public List<BookDetail> GetBookDetails(Person person)
        {
            using (ELibraryContext context = new ELibraryContext())
            {
                var result = from books in context.Books
                             join people in context.People
                             on books.BookId equals people.TakenBookId
                             where books.BookId == person.TakenBookId
                             
                             select new BookDetail
                             {

                                 BookId = people.TakenBookId,
                             };
                return result.ToList();
            }
        }
    }
    public List<BookDetail> GetirBookDetails(Person person)
        {
            return _personDal.GetBookDetails(person);
        }