public void testReferenceAndNaviagtedEntityIdential() {
EntityManager em1 = emf.createEntityManager();
RegularUser regularUserFromFind = (RegularUser) em1.find(
RegularUser.class, user.getOid());
Admin adminFromGetReference = em1.getReference(Admin.class, admin
.getOid());
Admin adminFromMethodBean = regularUserFromFind.getAdmin();
assertTrue(adminFromGetReference == adminFromMethodBean);
em1.close();
}