}

    @Test
    @DisplayName("getTree() acquires and returns same tree instance")
    void getTree_acquiresAndReturnsTree() {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(7L, true, true);

        SmbFileHandleImpl h = new SmbFileHandleImpl(cfg, 123, tree, "//server/share", 0, 0, 0, 0, 0L);

        SmbTreeHandleImpl t1 = h.getTree();
        SmbTreeHandleImpl t2 = h.getTree();

        when(file.openUnshared(anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(fh);
        when(fh.acquire()).thenReturn(fh);
        when(fh.isValid()).thenReturn(true);
        when(fh.getTree()).thenReturn(tree);
        when(fh.getFileId()).thenReturn(new byte[16]);
        when(fh.getFid()).thenReturn(1);

        // build via package-private constructor to control unshared flag

    @Override
    public long getInitialSize() {
        return this.initialSize;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbFileHandle#getTree()
     */
    @Override
    public SmbTreeHandleImpl getTree() {
        return this.tree.acquire();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbFileHandle#isValid()
     */
    @Override

     * on the server.
     */
    @Override
    public int available() throws IOException {
        try (SmbFileHandleImpl fd = this.handle.ensureOpen(); SmbTreeHandleImpl th = fd.getTree()) {
            if (th.isSMB2()) {
                final Smb2IoctlRequest req = new Smb2IoctlRequest(th.getConfig(), Smb2IoctlRequest.FSCTL_PIPE_PEEK, fd.getFileId());
                req.setMaxOutputResponse(16);

        if (len <= 0) {
            return 0;
        }
        final long start = this.fp;

        try (SmbFileHandleImpl fh = ensureOpen(); SmbTreeHandleImpl th = fh.getTree()) {

            int r, n;
            final SmbComReadAndXResponse response = new SmbComReadAndXResponse(th.getConfig(), b, off);
            do {
                r = len > this.readSize ? this.readSize : len;

        if (!this.handle.isValid()) {
            throw new SmbException("Watch was broken by tree disconnect");
        }
        try (SmbTreeHandleImpl th = this.handle.getTree()) {

            CommonServerMessageBlockRequest req;
            NotifyResponse resp = null;
            if (th.isSMB2()) {

                }
                
                // Send create request
                Smb2CreateResponse response = (Smb2CreateResponse) 
                    file.getTree().send(createReq);
                
                if (response.isSuccess()) {
                    // Update file with new handle
                    file.setFileId(response.getFileId());

            result.setRoomNumber(DfTypeUtil.toString(source.get("roomNumber")));
            result.setState(DfTypeUtil.toString(source.get("state")));
            result.setStreet(DfTypeUtil.toString(source.get("street")));
            result.setSurname(DfTypeUtil.toString(source.get("surname")));
            result.setTelephoneNumber(DfTypeUtil.toString(source.get("telephoneNumber")));

    @Override
    public int sendrecv(final byte[] buf, final int off, final int length, final byte[] inB, final int maxRecvSize) throws IOException {
        try (SmbFileHandleImpl fh = ensureOpen(); SmbTreeHandleImpl th = fh.getTree()) {

            if (th.isSMB2()) {
                final Smb2IoctlRequest req =
                        new Smb2IoctlRequest(th.getConfig(), Smb2IoctlRequest.FSCTL_PIPE_TRANSCEIVE, fh.getFileId(), inB);

            return;
        }

        if (this.tmp == null) {
            throw new IOException("Bad file descriptor");
        }

        try (SmbFileHandleImpl fh = ensureOpen(); SmbTreeHandleImpl th = fh.getTree()) {
            if (log.isDebugEnabled()) {
                log.debug("write: fid=" + fh + ",off=" + off + ",len=" + len + ",fp=" + this.fp);
            }

            int w;
            do {