val = ndrBuffer.dec_ndr_short();
        assertEquals(0x1234, val);
        assertEquals(4, ndrBuffer.getIndex());
    }

    @Test
    void testEncDecNdrLong() {
        ndrBuffer.enc_ndr_long(0xDEADBEEF);
        assertEquals(4, ndrBuffer.getIndex()); // Aligned to 4, then advanced by 4
        assertEquals(4, ndrBuffer.getLength());
        assertEquals((byte) 0xEF, buffer[0]); // Little-endian

    }

    @Test
    public void testInvalidProtocolId() throws Exception {
        assertThrows(SmbException.class, () -> {
            validator.validateSmbHeader(0xDEADBEEF, 64, 0x00);
        });
    }

    @Test
    public void testInvalidSmb1HeaderSize() throws Exception {
        assertThrows(SmbException.class, () -> {

        }
        request.setFileId(newFileId);
        request.setFileInfoClass((byte) 0x0A); // This will set info type to SMB2_0_INFO_FILE
        request.setAdditionalInformation(0xDEADBEEF);
        request.setQueryFlags(0xCAFEBABE);

        // Add input buffer
        Encodable mockInputBuffer = mock(Encodable.class);
        when(mockInputBuffer.size()).thenReturn(64);

        void testSpecialOffsetPatterns() {
            // Given - alternating bit pattern
            long pattern1 = 0xAAAAAAAAAAAAAAAAL;
            long pattern2 = 0x5555555555555555L;
            int pattern3 = 0xDEADBEEF;
            SrvCopychunk chunk = new SrvCopychunk(pattern1, pattern2, pattern3);
            byte[] buffer = new byte[EXPECTED_SIZE];

            // When
            int bytesWritten = chunk.encode(buffer, 0);