byte[] data = new byte[8];
        ByteBuffer buffer = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN);

        // Test with a positive value
        buffer.putInt(0, 0x12345678);
        assertEquals(0x12345678, NtlmMessage.readULong(data, 0), "Should read positive ULong correctly.");

        // Test with zero
        buffer.putInt(0, 0);

     */
    @Test
    @DisplayName("Decode single AvPair with EOL")
    void testDecodeSinglePair() throws CIFSException {
        // Create test data: AvFlags with value 0x12345678 + EOL
        byte[] flagData = new byte[4];
        SMBUtil.writeInt4(0x12345678, flagData, 0);
        byte[] avPairData = createAvPairData(AvPair.MsvAvFlags, flagData);
        byte[] eolData = createEolData();

                (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, // 0xFFFFFFFF
                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, // 0x00000000
                (byte) 0xEF, (byte) 0xCD, (byte) 0xAB, (byte) 0x89 // 0x89ABCDEF
        };

        assertEquals(0x12345678, SMBUtil.readInt4(src, 0));

        assertEquals(0x12, buffer[1] & 0xFF);
    }

    @Test
    @DisplayName("Should encode and decode 32-bit integers")
    void testInt32Operations() {
        // Given
        int value = 0x12345678;
        byte[] buffer = new byte[4];

        // When - encode little endian
        Encdec.enc_uint32le(value, buffer, 0);
        long decoded = Encdec.dec_uint32le(buffer, 0);

        // Then

    public void testContextWithFlags() {
        CompressionNegotiateContext contextWithFlags =
                new CompressionNegotiateContext(config, new int[] { CompressionNegotiateContext.COMPRESSION_LZ77 }, 0x12345678);

        assertEquals(0x12345678, contextWithFlags.getFlags());
    }

    @Test
    @DisplayName("Test toString representation")
    public void testToString() {
        String str = context.toString();

    }

    @Test
    public void testReadInt() throws IOException {
        // Little-endian 0x12345678 -> 0x78 0x56 0x34 0x12
        byte[] data = new byte[] { 0x78, 0x56, 0x34, 0x12 };
        PacDataInputStream pdis = createInputStream(data);
        assertEquals(0x12345678, pdis.readInt());
    }

    @Test
    public void testReadLong() throws IOException {

        byte[] buffer = new byte[] { 0x00, 0x00, // padding
                0x78, 0x56, 0x34, 0x12, // little-endian 0x12345678
                0x00, 0x00 // padding
        };
        int readLen = response.readParameterWordsWireFormat(buffer, 2);
        assertEquals(0x12345678L, response.getOffset(), "Offset should match decoded value");
        assertEquals(4, readLen, "Byte count returned should be 4");
    }

     */
    @Test
    void testConstructorWithError_unknownCode() {
        int errorCode = 0x12345678; // An arbitrary unknown error code
        DcerpcException exception = new DcerpcException(errorCode);

        assertEquals(errorCode, exception.getErrorCode(), "Error code should match the input.");
        assertEquals("0x12345678", exception.getMessage(), "Message should be hex string for unknown error code.");
    }

    /**

    /**
     * Test setting and getting int fields
     */
    @Test
    @DisplayName("Test int fields with various values")
    public void testIntFields() {
        // When
        serverData.sflags2 = 0x12345678;
        serverData.smaxMpxCount = 50;
        serverData.maxBufferSize = 65536;
        serverData.sessKey = 0xABCDEF01;
        serverData.scapabilities = 0x80000000;
        serverData.securityMode = 0x0F;

        when(mockNegotiate.getNegotiatedSendBufferSize()).thenReturn(65535);
        when(mockNegotiate.getNegotiatedMpxCount()).thenReturn(65535);
        when(mockNegotiate.getNegotiatedSessionKey()).thenReturn(0x12345678);
    }

    /** Simple test stub of {@link ServerData} */
    private static class ServerDataStub extends ServerData {
        public ServerDataStub() {
            this.security = SmbConstants.SECURITY_USER;