assertEquals("filetype:pdf", queryMap.get("PDF"));
        }

        // Check for XLS - could be either key format
        if (queryMap.containsKey("labels.facet_filetype_xls")) {
            assertEquals("filetype:xls", queryMap.get("labels.facet_filetype_xls"));
        } else {
            assertEquals("filetype:xls", queryMap.get("XLS"));
        }

        // DOC type won't be duplicated since it already exists

            switch (ext) {
                case 'pdf': return 'fa-file-pdf-o';
                case 'doc': case 'docx': return 'fa-file-word-o';
                case 'xls': case 'xlsx': return 'fa-file-excel-o';
                case 'ppt': case 'pptx': return 'fa-file-powerpoint-o';
                case 'jpg': case 'jpeg': case 'png': case 'gif': return 'fa-file-image-o';