为什么我测试的时候，什么反应都没有

package entity;

import java.util.Date;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.hibernate.service.ServiceRegistry;

import org.hibernate.service.ServiceRegistryBuilder;

import org.hibernate.tool.hbm2ddl.SchemaExport;

import org.junit.Test;

public class Teststudents

{

@Test

public void testschemaExport()

{

Configuration configuration=new Configuration().configure();

        ServiceRegistry serviceRegistry=new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();

        SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);

        Session session=sessionFactory.getCurrentSession();

        SchemaExport export=new SchemaExport(configuration);

        export.create(true,true);

}