@Test
public void testPersistence() {
try {
em.getTransaction().begin();
Student u = new Student();
u.setScore(12);
u.setName("eskatos");
em.persist(u);
assertTrue(em.contains(u));
em.remove(u);
assertFalse(em.contains(u));
em.getTransaction().commit();
} catch (Exception ex) {
em.getTransaction().rollback();
ex.printStackTrace();
fail("Exception during testPersistence");
}
}
