[TestFixture]
    public  class CustomerTest
    {
        [Test]
        public void Add()
        {
            CustomerService service = new CustomerService();
            Customer entity = new Customer();
            entity.LastName = "星星";
            entity.FirstName = "周";
            service.Add(entity);
        }
    }

ISession session = nhibernateSession.Get();
            if (session == null)
            {
                session = SessionFactory.OpenSession();
                nhibernateSession.Set(session);
            }
            return session;