assertEquals(RequestDataBuilder.newRequestData().url(url + "/").build(),
                htmlTransformer.getDuplicateUrl(RequestDataBuilder.newRequestData().url(url).build()));

        url = "http://hoge/";
        assertEquals(RequestDataBuilder.newRequestData().url("http://hoge").build(),
                htmlTransformer.getDuplicateUrl(RequestDataBuilder.newRequestData().url(url).build()));

    }

    public void test_normalizeUrl() {

            resultData.addAllUrl(responseData.getChildUrlSet());

            final RequestData requestData = responseData.getRequestData();
            resultData.removeUrl(requestData);
            resultData.removeUrl(getDuplicateUrl(requestData));
        } catch (final CrawlerSystemException e) {
            throw e;
        } catch (final Exception e) {
            throw new CrawlerSystemException("Could not store data.", e);
        }