@Test
 public void testGet() throws Exception {
   SecurityGroup group = dao.get(2L);
   Assert.assertNotNull(group);
   Assert.assertEquals(2L, group.getId());
   Assert.assertTrue(group.getName().length() > 0);
   Assert.assertTrue(group.getDescription().length() > 0);
   Assert.assertTrue(group.getRoles().size() > 0);
 }