@Test
public void executeArithmetic() {

  String attributeName = "name";
  List<Object> objects = new ArrayList<Object>();
  doReturn(attributeName).when(arithmeticCriteria).getAttributeName();
  doReturn(cacheIndex).when(indexes).get(attributeName);
  doReturn(objects).when(arithmeticCriteria).meets(cacheIndex);
  List<Object> actualObjects = handler.executeArithmetic(arithmeticCriteria);
  assertEquals(objects, actualObjects);
}