@Test
public void testCallFunctionDN() {

    Map<String, Object> arguments = new HashMap<String, Object>();
    arguments.put(STREET_CODE, "1234567890");
    arguments.put(STREET_CODE2, "1234567890");
    arguments.put(STREET_CODE3, "1234567890");
    arguments.put(BOROUGH_CODE, 1);
    arguments.put(BOROUGH_CODE2, 2);
    arguments.put(BOROUGH_CODE3, 3);
    arguments.put(NORMALIZATION_FORMAT, NORMALIZATION_FORMAT_SORT_VALUE);
    arguments.put(NORMALIZATION_LENGTH, 12);
    mockFunctionCall(FDN, arguments);
    Map<String, Object> actualResult = geosupportServiceImpl.callFunctionDN("11234567890","21234567890","31234567890", 12, NORMALIZATION_FORMAT_SORT_VALUE);
    verifyMocks(actualResult);
}