url = "gcs://bucket/";
        exp = "bucket/";
        assertEquals(exp, transformer.getSiteOnFile(url, "UTF-8"));
    }

    @Test
    public void test_getSite_ok_len10() {
        String url, exp;
        final FessFileTransformer transformer = new FessFileTransformer() {
            @Override
            public int getMaxSiteLength() {
                return 10;