@Test
 public void testGetPrincipals() {
   List<String> principalIds = new ArrayList<String>();
   principalIds.add("KULUSER");
   List<Principal> validPrincipals = identityService.getPrincipals(principalIds);
   assertNotNull("validPrincipals must not be null", validPrincipals);
   assertEquals(
       "validPrincipals name did not match expected result",
       "kuluser",
       validPrincipals.get(0).getPrincipalName());
 }