if (StringUtil.isNotBlank(mimetype)) {
                switch (mimetype) {
                case "text/html":
                    return appendHTMLSearchWord(document, url);
                case "application/pdf":
                    return appendPDFSearchWord(document, url);
                default:
                    break;
                }
            }

        viewHelper.init();

        Map<String, Object> document = new HashMap<>();
        String url = "http://example.com/test.html";

        assertEquals(url, viewHelper.appendHTMLSearchWord(document, url));

        ViewHelper.TextFragment[] fragments = new ViewHelper.TextFragment[2];
        fragments[0] = new ViewHelper.TextFragment(null, "test", null, null);