n = -1;
                    }
                } else {
                    final SmbComReadAndX request = new SmbComReadAndX(th.getConfig(), fh.getFid(), this.fp, r, null);
                    if (this.largeReadX) {
                        request.setMaxCount(r & 0xFFFF);
                        request.setOpenTimeout(r >> 16 & 0xFFFF);
                    }

                    len -= cnt;
                    off += cnt;
                } else if (this.useNTSmbs) {
                    this.reqx.setParam(fh.getFid(), this.fp, len - w, b, off, w);
                    if ((flags & 1) != 0) {
                        this.reqx.setParam(fh.getFid(), this.fp, len, b, off, w);
                        this.reqx.setWriteMode(0x8);
                    } else {

        when(tree.isConnected()).thenReturn(true);
        assertTrue(h.isValid());
        h.markClosed();
        assertFalse(h.isValid());
    }

    @Test
    @DisplayName("getFid/getFileId throw SmbException when invalid")
    void getters_throw_whenInvalid() {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(1L, true, true);

                        continue;
                    }

                    // SMB1 path with optimization
                    final SmbComReadAndX request = new SmbComReadAndX(th.getConfig(), fd.getFid(), this.fp, r, null);

                    if (type == SmbConstants.TYPE_NAMED_PIPE) {
                        // Use fixed 1024 values for named pipes
                        request.setMinCount(1024);

                return resp.getOutputLength();
            }
            if (this.transact) {
                final TransTransactNamedPipe req = new TransTransactNamedPipe(th.getConfig(), fh.getFid(), buf, off, length);
                final TransTransactNamedPipeResponse resp = new TransTransactNamedPipeResponse(th.getConfig(), inB);

        when(tree.isSMB2()).thenReturn(false);
        when(tree.getConfig()).thenReturn(mock(Configuration.class));
        when(tree.hasCapability(SmbConstants.CAP_NT_SMBS)).thenReturn(true);
        when(handle.getFid()).thenReturn(fid);
        when(tree.send(any(CommonServerMessageBlockRequest.class), any(), any(), any())).thenReturn(resp);
    }

    // Ensures watch() fails fast if the underlying handle is invalid
    @Test

                } else if (dh.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                    // use the open file descriptor
                    dh.send(new Trans2SetFileInformation(dh.getConfig(), dfd.getFid(), attrs, ctime, mtime, atime),
                            new Trans2SetFileInformationResponse(dh.getConfig()));
                } else {

        when(fh.acquire()).thenReturn(fh);
        lenient().when(fh.isValid()).thenReturn(true);
        lenient().when(fh.getTree()).thenReturn(tree);
        when(fh.getFid()).thenReturn(99);

        // Mock send to just echo the provided response instance
        when(tree.send(any(TransTransactNamedPipe.class), any(TransTransactNamedPipeResponse.class), eq(RequestParam.NO_RETRY)))

        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
        return new SmbRandomAccessFile(file, mode, SmbConstants.DEFAULT_SHARING, unshared);
    }

    @Test

        void testTidProperty() {
            assertEquals(0xFFFF, testBlock.getTid());
            testBlock.setTid(0x1234);
            assertEquals(0x1234, testBlock.getTid());
        }

        @Test
        @DisplayName("Test PID property")
        void testPidProperty() {
            testBlock.setPid(0x5678);
            assertEquals(0x5678, testBlock.getPid());
        }

        @Test