@Test
 public void testTerminate() {
   assertFalse(post.getEmployees(now).isEmpty());
   employee.terminate(now);
   assertTrue(post.getEmployees(now).isEmpty());
 }
 public Post createPost(String name, String sn, Job job, Organization organization, Date date) {
   Post result = new Post(name, sn, job, organization);
   result.setCreateDate(date);
   result.save();
   return result;
 }