assertNull(((SitemapUrl) sitemaps[4]).getChangefreq());
        assertNull(((SitemapUrl) sitemaps[4]).getPriority());
    }

    public void test_parseXmlSitemapsGz() {
        final InputStream in = ResourceUtil.getResourceAsStream("sitemaps/sitemap1.xml.gz");
        final SitemapSet sitemapSet = sitemapsHelper.parse(in);
        final Sitemap[] sitemaps = sitemapSet.getSitemaps();