if (LogStream.level >= 4) {
                    SmbTransport.log.println("treeConnect: unc=" + unc + ",service=" + service);
                }

                final SmbComTreeConnectAndXResponse response = new SmbComTreeConnectAndXResponse(andxResponse);
                final SmbComTreeConnectAndX request = new SmbComTreeConnectAndX(session, unc, service, andx);
                session.send(request, response);

                    if (log.isDebugEnabled()) {
                        log.debug("treeConnect: unc=" + unc + ",service=" + svc);
                    }

                    if (transport.isSMB2()) {
                        final Smb2TreeConnectRequest req = new Smb2TreeConnectRequest(sess.getConfig(), unc);
                        if (andx != null) {
                            req.chain((ServerMessageBlock2) andx);

    }

    @Test
    void testPreservationOfDoubleSlashes() {
        assertEquals("scm:hg:ssh://localhost//home/user", normalize("scm:hg:ssh://localhost//home/user"));
        assertEquals("file:////UNC/server", normalize("file:////UNC/server"));
        assertEquals(
                "[fetch=]http://server.org/[push=]ssh://server.org/",
                normalize("[fetch=]http://server.org/[push=]ssh://server.org/"));
    }

    @Test

            name = name.substring(0, last);
        }
        if (context.share == null) {
            this.unc = "\\";
        } else if (context.unc.equals("\\")) {
            this.unc = '\\' + name;
        } else {
            this.unc = context.unc + '\\' + name;
        }
        /* why? am I going around in circles?
         *  this.type = type == TYPE_WORKGROUP ? 0 : type;
         */

            } catch (final SmbException se) {
                fp = 0L;
            }
        }
        if (file instanceof SmbNamedPipe && file.unc.startsWith("\\pipe\\")) {
            file.unc = file.unc.substring(5);
            file.send(new TransWaitNamedPipe("\\pipe" + file.unc), new TransWaitNamedPipeResponse());
        }
        file.open(openFlags, access | SmbConstants.FILE_WRITE_DATA, SmbFile.ATTR_NORMAL, 0);

     */
    void stripPathConsumed(int i);

    @Override
    DfsReferralDataInternal next();

    /**
     * Set the UNC path link for this referral
     *
     * @param link the UNC path link to set
     */
    void setLink(String link);

    /**
     * Get the cache key for this referral
     *
     * @return cache key
     */
    String getKey();

    }

    // Happy path: handleDFSReferral returns a resolved path
    @Test
    @DisplayName("handleDFSReferral returns resolved UNC path as stubbed")
    void handleDfsReferralValidInputs() {
        // Edge-like Windows UNC-style: a single backslash in the path
        String reqPath = "\\";
        String resolved = "smb://server/share/path";

        verify(tree, times(1)).acquire();
        verify(tree, times(1)).release(); // closed after failure
    }

    @Test
    @DisplayName("open(): invalid UNC without trailing backslash throws SmbException")
    void invalidUncThrows() throws Exception {
        // Override the default setup for this specific test

    /**
     * Internal: for testing only
     *
     * @param dr the DFS referral data to process
     * @param reqPath the requested path to resolve
     * @return resolved unc path
     */
    String handleDFSReferral(DfsReferralData dr, String reqPath);

        super(pipe, false, pipe.pipeType & 0xFFFF00FF | SmbFile.O_EXCL);
        this.pipe = pipe;
        this.dcePipe = (pipe.pipeType & SmbNamedPipe.PIPE_TYPE_DCE_TRANSACT) == SmbNamedPipe.PIPE_TYPE_DCE_TRANSACT;
        path = pipe.unc;
    }

    @Override
    public void close() throws IOException {
        pipe.close();
    }

    @Override
    public void write(final int b) throws IOException {
        tmp[0] = (byte) b;