final ResultData resultData = textTransformer.transform(responseData);
        assertEquals("xyz", new String(resultData.getData(), resultData.getEncoding()));
    }

    public void test_transform_null() {
        try {
            textTransformer.transform(null);
            fail();
        } catch (final CrawlerSystemException e) {
            // NOP
        }
    }

        responseData.setResponseBody(data);
        final ResultData resultData = binaryTransformer.transform(responseData);
        assertEquals("xyz", new String(resultData.getData()));
    }

    public void test_transform_null() {
        try {
            binaryTransformer.transform(null);
            fail();
        } catch (final CrawlerSystemException e) {
            // NOP
        }
    }

        assertEquals(1, resultData.getChildUrlSet().size());
        assertEquals("http://hoge/test.html?q=hoge", resultData.getChildUrlSet().iterator().next().getUrl());
    }

    public void test_transform_null() {
        try {
            htmlTransformer.transform(null);
            fail();
        } catch (final CrawlerSystemException e) {}
    }

    public void test_parseCharset() {