new SecureRandom().nextBytes(signature);

        // When
        transformHeader.setSignature(signature);

        // Then
        assertArrayEquals(signature, transformHeader.getSignature());
    }

    @Test
    @DisplayName("Should set and get nonce")
    void testNonce() {
        // When
        transformHeader.setNonce(testNonce);

        // Then
        assertArrayEquals(testNonce, transformHeader.getNonce());

        // When
        String result = Hexdump.toHexString(data);

        // Then
        assertNotNull(result);
        assertEquals("000FFF7F80", result);
    }

    @Test
    @DisplayName("Should handle empty byte array")
    void testToHexStringEmpty() {
        // Given
        byte[] data = {};

        // When
        String result = Hexdump.toHexString(data);

        lenient().when(mockContext.getConfig()).thenReturn(mockConfig);
        lenient().when(mockContext.getNameServiceClient()).thenReturn(mockNameServiceClient);
        lenient().when(mockNameServiceClient.getLocalHost()).thenReturn(mockLocalHost);
        lenient().when(mockLocalHost.getHostName()).thenReturn("localhost");
        lenient().when(mockConfig.getDefaultDomain()).thenReturn("WORKGROUP");

        when(pipe.openUnshared(anyString(), anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(fh);
        when(fh.acquire()).thenReturn(fh);
        lenient().when(fh.isValid()).thenReturn(true);
        lenient().when(fh.getTree()).thenReturn(tree);
        when(fh.getFileId()).thenReturn(new byte[16]);

        // Setup for ioctl request

    void getFlags_allFalse() {
        when(gssContext.getCredDelegState()).thenReturn(false);
        when(gssContext.getMutualAuthState()).thenReturn(false);
        when(gssContext.getReplayDetState()).thenReturn(false);
        when(gssContext.getSequenceDetState()).thenReturn(false);
        when(gssContext.getAnonymityState()).thenReturn(false);
        when(gssContext.getConfState()).thenReturn(false);

        SmbPipeInputStream stream = newStreamWithMinimalStubs(true);

        when(handle.ensureOpen()).thenReturn(fd);
        when(fd.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getConfig()).thenReturn(config);
        when(config.getTransactionBufferSize()).thenReturn(65535);
        when(tree.send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY))).thenThrow(new SmbException("boom"));

    }

    @Test
    @DisplayName("Should create exception with error code and message")
    void testBasicCreation() {
        // When
        exception = new SmbOperationException(SmbOperationException.ErrorCode.FILE_NOT_FOUND, "test.txt");

        // Then
        assertNotNull(exception);
        assertEquals(SmbOperationException.ErrorCode.FILE_NOT_FOUND, exception.getErrorCode());

        // Arrange
        int cap1 = 0x00000001;
        int cap2 = 0x00000002;
        int cap3 = 0x00000004;
        when(negotiationResponse.haveCapabilitiy(cap1)).thenReturn(true);
        when(negotiationResponse.haveCapabilitiy(cap2)).thenReturn(false);
        when(negotiationResponse.haveCapabilitiy(cap3)).thenReturn(true);

        // Act & Assert
        assertTrue(negotiationResponse.haveCapabilitiy(cap1));

        byte[] dst = new byte[42];

        // When
        int result = trans2SetFileInformation.writeDataWireFormat(dst, 0);

        // Then
        assertEquals(40, result); // Returns 40 bytes written
    }

    @Test
    void testReadSetupWireFormat() {
        // When
        int result = trans2SetFileInformation.readSetupWireFormat(new byte[0], 0, 0);

        // Then
        assertEquals(0, result);
    }

        MockitoAnnotations.openMocks(this);
        when(session.getConfig()).thenReturn(config);
        when(session.getContext()).thenReturn(context);
        when(session.getTransport()).thenReturn(transport);
        when(session.acquire()).thenReturn(session);
        when(config.isTraceResourceUsage()).thenReturn(false);
        when(context.getConfig()).thenReturn(config);
        when(session.isConnected()).thenReturn(true);
    }