assertEquals("FFFE80", Hexdump.toHexString(data2, 0, 6)); // 6 chars = 3 bytes
        assertEquals("FFFE807F", Hexdump.toHexString(data2, 0, 8)); // 8 chars = 4 bytes

        // Test odd size (should handle correctly)
        byte[] data3 = { 0x0A, 0x0B, 0x0C };
        assertEquals("0", Hexdump.toHexString(data3, 0, 1)); // 1 char = 0.5 bytes (rounds up to 1)

        // Full lease for read/write/handle operations
        if (hasWriteAccess || hasDeleteAccess) {
            return Smb2LeaseState.SMB2_LEASE_FULL; // Read + Write + Handle
        }
        // Read + Handle for read operations
        else if (hasReadAccess) {
            return Smb2LeaseState.SMB2_LEASE_READ_HANDLE; // Read + Handle
        }

        CIFSException expectedException = new CIFSException("Failed to close handle");
        doThrow(expectedException).when(watchHandle).close();

        // Execute and verify
        CIFSException thrown = assertThrows(CIFSException.class, () -> {
            watchHandle.close();
        });

        assertEquals("Failed to close handle", thrown.getMessage());
        verify(watchHandle, times(1)).close();
    }

    /** The specified information class is invalid */
    int NT_STATUS_INVALID_INFO_CLASS = 0xC0000003;
    /** Invalid access to memory location */
    int NT_STATUS_ACCESS_VIOLATION = 0xC0000005;
    /** The handle is invalid */
    int NT_STATUS_INVALID_HANDLE = 0xC0000008;
    /** The parameter is incorrect */
    int NT_STATUS_INVALID_PARAMETER = 0xC000000d;
    /** The system cannot find the device specified */

                // Cleanup persistent handle manager
                if (persistentHandleManager != null) {
                    try {
                        persistentHandleManager.shutdown();
                        log.debug("Persistent handle manager shutdown on session logoff");
                    } catch (Exception e) {
                        log.warn("Error shutting down persistent handle manager during logoff", e);

        assertNotNull(request);
    }

    @Test
    @DisplayName("Constructor should handle null filename")
    void testConstructorWithNullFilename() {
        // When & Then
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, null));
    }

    @Test
    @DisplayName("Constructor should handle empty filename")
    void testConstructorWithEmptyFilename() {
        // When & Then

                    // Handle operation failure appropriately
                    notifyOperationFailure(op, e);
                }
            }
        }
    }

    private void notifyOperationFailure(CommonServerMessageBlock op, Exception error) {
        // This would need to be implemented based on how the SMB operations
        // handle asynchronous failures in the actual transport implementation

            } else {
                throw new IOException("Simulated reconnection failure");
            }
        }

        public void testCreateReconnectionRequest(HandleInfo handle) {
            createReconnectionRequest(handle);
        }
    }

            // Should use caller available units, not actual free units
            assertEquals(500L * 8 * 512, fileFsFullSizeInfo.getFree());
        }

        @Test
        @DisplayName("Should handle negative values in buffer")
        void shouldHandleNegativeValuesInBuffer() throws SMBProtocolDecodingException {
            // Given - negative values (treated as unsigned in protocol)

import jcifs.smb1.util.Encdec;

/**
 * DCERPC handle implementation using SMB named pipes for transport
 */
public class DcerpcPipeHandle extends DcerpcHandle {

    SmbNamedPipe pipe;
    SmbFileInputStream in = null;
    SmbFileOutputStream out = null;
    boolean isStart = true;

    /**
     * Creates a DCERPC pipe handle with the specified URL and authentication