@Test
public void testReadSystemSettingEmpty() {

  PowerMockito.when(
          cassandraOperation.getRecordsByIndexedProperty(
              Mockito.anyString(), Mockito.anyString(), Mockito.anyString(), Mockito.any()))
      .thenReturn(getSystemSettingSuccessResponse(true));
  SystemSetting systemSetting = systemSettingDaoImpl.readByField(FIELD);
  Assert.assertTrue(null == systemSetting);
}