url = "tp://hoge.com/http/fuga.html";
        assertEquals("http://hoge.com/peke.html", urlConvertHelper.convert(url));
    }

    public void test_convert_null() {
        String url;

        url = null;
        assertNull(urlConvertHelper.convert(url));

        url = "";
        assertEquals("", urlConvertHelper.convert(url));

        url = " ";