Test de nhibernate con consulta usando generics y linq

testGenericNhibernate.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NHibernate;
using FluentNHibernate.Cfg;
using FluentNHibernate.Cfg.Db;
using FluentNHibernate.Automapping;
using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;
using FluentNHibernate.Conventions;
using FluentNHibernate.Conventions.Instances;
using NHibernate.Linq;
using RFID.Entidades;
using NHibernate.Criterion;
using System.Data;
using System.Data.SqlClient;

namespace App.Dominio
{
    public class DominioApp
    {
         public List<T> Todos<T>()
        {
            List<T> lista;
            using (var session = currentSession.OpenSession())
            {
                lista = session.Query<T>().ToList<T>();
            }
            return lista;
        }

        public int Cantidad<T>()
        {
            int cantidad;
            using (var session = currentSession.OpenSession())
            {

                cantidad = session.Query<T>().Count();
            }
            return cantidad;
        }
     }
}