}

    @Test
    @DisplayName("Test decode method with valid buffer")
    void testDecode() throws SMBProtocolDecodingException {
        // Prepare buffer with known value
        long expectedValue = 0x0123456789ABCDEFL;
        byte[] buffer = new byte[16];
        SMBUtil.writeInt8(expectedValue, buffer, 0);

        // Decode
        int bytesRead = fileInfo.decode(buffer, 0, buffer.length);

        FileRenameInformation2 original = new FileRenameInformation2(fileName, replaceIfExists);

        // Encode
        byte[] buffer = new byte[200];
        int bytesWritten = original.encode(buffer, 0);

        // Decode
        FileRenameInformation2 decoded = new FileRenameInformation2();
        int bytesRead = decoded.decode(buffer, 0, bytesWritten);

        // Verify round trip
        assertEquals(bytesWritten, bytesRead);

        // The actual implementation reassigns _dst = _dst.deferred inside encode(), so we can't verify the exact buffer
        verify(objAttr.root_directory).encode(any(NdrBuffer.class));
        verify(objAttr.object_name).encode(any(NdrBuffer.class));
        verify(objAttr.security_quality_of_service).encode(any(NdrBuffer.class));
    }

    @Test

            // When: Decoding the value
            ndrShort.decode(mockBuffer);

            // Then: Should set the negative value directly (no masking on decode)
            verify(mockBuffer).dec_ndr_short();
            assertEquals(negativeValue, ndrShort.value);
        }

        @Test
        @DisplayName("Should decode large value correctly")
        void testDecodeLargeValue() throws NdrException {

        // Encode to buffer
        byte[] buffer = new byte[1024];
        NdrBuffer encodeBuffer = new NdrBuffer(buffer, 0);
        domainInfo.encode(encodeBuffer);

        // Decode from buffer
        NdrBuffer decodeBuffer = new NdrBuffer(buffer, 0);
        lsarpc.LsarDomainInfo decodedInfo = new lsarpc.LsarDomainInfo();
        decodedInfo.decode(decodeBuffer);

        @Override
        public void encode(NdrBuffer _dst) throws NdrException {
            _dst.align(4);
            _dst.enc_ndr_referent(this.entry_path, 1);

            if (this.entry_path != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(this.entry_path);

            }
        }

        @Override
        public void decode(NdrBuffer _src) throws NdrException {

        }

        @Test
        @DisplayName("Should encode and decode correctly with null parameters")
        void testRoundTripNullParameters() throws SMBProtocolDecodingException {
            PreauthIntegrityNegotiateContext originalContext = new PreauthIntegrityNegotiateContext(mockConfig, null, null);

            int encoded = originalContext.encode(buffer, 0);

    }

    /**
     * When given a buffer with sufficient length, decode performs
     * the inverse of encode.
     */
    @Test
    void decodeFromEncodedBuffer() throws NdrException {
        NdrShort ns = new NdrShort(123); // masked value 123 (already fits in 8 bits)
        buf.reset();
        ns.encode(buf);

        // Reset buffer to start for decoding
        buf.reset();

        @Override
        public void encode(NdrBuffer dst) throws NdrException {
            if (throwOnEncode) {
                throw new NdrException("Failed to encode");
            }
            // Simulate some encoding activity on the buffer
            dst.enc_ndr_long(123);
        }

        @Override
        public void decode(NdrBuffer src) throws NdrException {
            if (throwOnDecode) {

            byte[] largeBuffer = new byte[1000];

            // Act
            int smallEncodedSize = context.encode(smallBuffer, 0);
            int largeEncodedSize = context.encode(largeBuffer, 500);

            // Assert
            // encode() returns actual bytes written (6), not size() value (8)
            assertEquals(6, smallEncodedSize); // actual: 2 bytes count + 2*2 bytes for ciphers