// problem deleting table in MySQL
}
public void testFindAndNaviagtedEntityIdential() {
EntityManager em1 = emf.createEntityManager();
RegularUser regularUserFromFind = (RegularUser) em1.find(
RegularUser.class, user.getOid());
Admin adminFromFind = em1.find(Admin.class, admin.getOid());
Admin adminFromMethodBean = regularUserFromFind.getAdmin();
assertTrue(adminFromFind == adminFromMethodBean);
em1.close();
}