public void testPersistTechnology() {
   Technology tech1 = new Technology();
   tech1.setDescription("some description");
   tech1.setName("ejb");
   manager.getTransaction().begin();
   manager.persist(tech1);
   manager.getTransaction().commit();
   manager.getTransaction().begin();
   manager.clear();
   manager.getTransaction().commit();
   manager.getTransaction().begin();
   Technology tech = manager.find(Technology.class, "ejb");
   assertEquals("some description", tech.getDescription());
   manager.getTransaction().commit();
 }