@Before
 public void setUp() {
   ar = mock(ActivityRepository.class);
   arb = new ActivityRequestBean();
   arb.setActivityRepository(ar);
   activity = new Activity();
 }
 @Test
 public void testDeleteActivity() {
   assertThat(arb.deleteActivity(activity), is(true));
 }
 @Test
 public void testUpdateActivity() {
   assertThat(arb.updateActivity(activity), is(true));
 }
 @Test
 public void testCreateActivity() {
   assertThat(arb.createActivity(activity), is(true));
 }