assertEscapePattern("\\Qsmb://server/test/\\E.*", "smb://server/test/");
        assertEscapePattern(".*\\Q?\\E.*", "contains:?");
        assertEscapePattern(".*\\Q\001\\E.*", "contains:\001");
        assertEscapePattern("(?i).*\\.exe$", "regexpIgnoreCase:\\.exe$");
        assertEscapePattern("(?i)index.html", "regexpIgnoreCase:index.html");
        assertEscapePattern(".*\\.exe$", "regexp:\\.exe$");

        assertNull(sentIndex.get());

        sentIndex.set(null);
        sentDocList.clear();
        docList.add(new HashMap<>(Map.of(//
                "_id", "001", //
                "config_id", "W01", //
                "url", "http://test.com/001"//
        )));
        docList.add(new HashMap<>(Map.of(//
                "_id", "002", //
                "thumbnail", "http://test.com/002", //