final int access, final int attrs, final int options, final long initialSize) {
        this.cfg = cfg;
        this.fileId = fid;
        this.initialSize = initialSize;
        this.fid = 0;
        this.unc = unc;
        this.flags = flags;
        this.access = access;
        this.attrs = attrs;

                    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();

		// cases below where it doesn't.
		{`C:\long\foo.txt`, `\\?\C:\long\foo.txt`},
		{`C:/long/foo.txt`, `\\?\C:\long\foo.txt`},
		{`C:\long\foo\\bar\.\baz\\`, `\\?\C:\long\foo\bar\baz`},
		{`\\unc\path`, `\\unc\path`},
		{`long.txt`, `long.txt`},
		{`C:long.txt`, `C:long.txt`},
		{`c:\long\..\bar\baz`, `c:\long\..\bar\baz`},
		{`\\?\c:\long\foo.txt`, `\\?\c:\long\foo.txt`},
		{`\\?\c:\long/foo.txt`, `\\?\c:\long/foo.txt`},

    }

    // 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);