封装单元测试的重复代码

　　　平时几乎每个单元测试开头都要写以下代码，神烦！

    private Session session;
    private Transaction transaction;

    @Before
    public void init(){
        session = getSession();
        transaction = session.beginTransaction();
    }

    @After
    public void destroy(){
        transaction.commit();
        session.close();
    }

　　今天要把它封装一下，做了一个父类：BaseTest，让所有需要上面代码的单元测试都及继承这个父类，具体内容如下：

class BaseTest {
    static Session session;
    private static Transaction transaction;

    @Before
    public void init() {
        session = getSession();
        transaction = session.beginTransaction();
        System.out.println("[时间]"+new Date()+"    session创建成功！事务已开启！");
    }

    @After
    public void destroy() {
        transaction.commit();
        session.close();
        System.out.println("[时间]"+new Date()+"    事务已提交！session已销毁！");
    }
}

然后子类就可以这么写：

public class QueryByCriteria extends BaseTest {
    @Test
    public void QueryTest(){
        Criteria criteria = session.createCriteria(ClassRoom.class);
        List<ClassRoom> list = criteria.list();
        list.stream()
                .forEach(item->System.out.println(item.getClassName()));
    }
}        

 最后附上HibernateUtil：

public class HibernateUtil {

    private static final SessionFactory sessionFactory = buildSessionFactory();

    private static SessionFactory buildSessionFactory() {
        try {
            Configuration configuration = new Configuration();
            configuration.configure("Hibernate.cfg.xml");
    //        在下面添加映射，不要写在配置文件中
            configuration.addAnnotatedClass(ClassRoom.class);
            StandardServiceRegistryBuilder ssrb = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties());
            return configuration.buildSessionFactory(ssrb.build());
        }
        catch (Throwable ex) {
            System.err.println("Initial SessionFactory creation failed !" + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }

    public static Session getSession() throws HibernateException {
        return sessionFactory.openSession();
    }
}