@Test
public void should_return_false_when_count_un_synced_less_then_zero() throws Exception {

    when(casePhotoDao.countUnSynced(anyLong())).thenReturn(-1L);
    assertThat("Should return false", casePhotoService.hasUnSynced(1L), is(false));
    verify(casePhotoDao).countUnSynced(1L);
}