테스트 코드 세팅

		private static EntityManagerFactory entityManagerFactory;
    private EntityManager entityManager;

    **@BeforeAll**
    public static void initFactory(){
        entityManagerFactory =
                Persistence.createEntityManagerFactory(
                        **"(persistence-unit name)"**);
    }

    **@BeforeEach**
    public void initManager(){
        entityManager = entityManagerFactory.createEntityManager();
    }

    **@AfterEach**
    public void closeManager(){
        entityManager.close();
    }

    **@AfterAll**
    public static void closeFactoru(){
        entityManagerFactory.close();
    }
}