try {
            mimeTypeHelper.getContentType(null, "");
            fail();
        } catch (final MimeTypeException e) {}

        assertEquals("text/plain", mimeTypeHelper.getContentType(is, ""));
        assertEquals("text/plain", mimeTypeHelper.getContentType(is, " "));
    }

        osddHelper.init();
        assertTrue(osddHelper.hasOpenSearchFile());

        final StreamResponse streamResponse = osddHelper.asStream();
        assertEquals("text/xml; charset=UTF-8", streamResponse.getContentType());
        streamResponse.getStreamCall().callback(new WrittenStreamOut() {

            @Override
            public void write(final InputStream ins) throws IOException {
                assertEquals("""

                            responseData.setMimeType(mimeTypeHelper.getContentType(is, file.getName()));
                        } catch (final Exception e) {
                            responseData.setMimeType(mimeTypeHelper.getContentType(null, file.getName()));
                        }
                    } else {
                        if (logger.isDebugEnabled()) {

                            responseData.setMimeType(mimeTypeHelper.getContentType(is, file.getName()));
                        } catch (final Exception e) {
                            responseData.setMimeType(mimeTypeHelper.getContentType(null, file.getName()));
                        }
                    } else {
                        if (logger.isDebugEnabled()) {

                        responseData.setMimeType(mimeTypeHelper.getContentType(is, file.getName()));
                    } catch (final Exception e) {
                        responseData.setMimeType(mimeTypeHelper.getContentType(null, file.getName()));
                    }

                    if (contentLengthHelper != null) {

        @Override
        public InputStream getInputStream() throws IOException {
            return fileItem.getInputStream();
        }

        @Override
        public String getContentType() {
            return fileItem.getContentType();
        }

        @Override
        public int getFileSize() {
            return (int) fileItem.getSize();
        }

        @Override

            return 0;
        }

        @Override
        public long getContentLengthLong() {
            return 0;
        }

        @Override
        public String getContentType() {
            return null;
        }

        @Override
        public jakarta.servlet.ServletInputStream getInputStream() {
            return null;
        }

        @Override

        } catch (final IOException ex) {}
        return connection.getContentLength();
    }

    @Override
    public String getContentType() {
        try {
            handshake();
        } catch (final IOException ex) {}
        return connection.getContentType();
    }

    @Override
    public String getContentEncoding() {
        try {
            handshake();

            @Override
            public String getCharacterEncoding() {
                return null;
            }

            @Override
            public String getContentType() {
                return null;
            }

            @Override
            public jakarta.servlet.ServletOutputStream getOutputStream() {
                return null;
            }

            }

            @Override
            public long getContentLengthLong() {
                return 0;
            }

            @Override
            public String getContentType() {
                return null;
            }

            @Override
            public jakarta.servlet.ServletInputStream getInputStream() throws IOException {
                return null;
            }