// Arrange
        Smb2LogoffRequest req = newRequest();
        int base = Smb2Constants.SMB2_HEADER_LENGTH + 4; // structure size
        int expected = ((base + 7) / 8) * 8; // expected 8-byte alignment

        // Act
        int actual = req.size();

        // Assert
        assertEquals(expected, actual, "size() must be 8-byte aligned");
    }

    @ParameterizedTest

        assertEquals((byte) 0x04, dst[0]); // First buffer format byte

        // Find the second buffer format byte by searching for it
        // In Unicode mode, the old filename is written as Unicode, then 0x04, then an alignment byte
        int secondBufferFormatIndex = -1;
        for (int i = 1; i < result - 1; i++) {
            if (dst[i] == (byte) 0x04) {
                secondBufferFormatIndex = i;
                break;

        return (flags & Smb2HandleCapabilities.SMB2_DHANDLE_FLAG_PERSISTENT) != 0;
    }

    @Override
    public int size() {
        // Context header (16) + name length (4) + padding to 8-byte alignment (4) + data (32)
        return 16 + 4 + 4 + STRUCTURE_SIZE;
    }

    @Override
    public int encode(byte[] dst, int dstIndex) {
        int start = dstIndex;

        // Write context header

        dstIndex += this.info.encode(dst, dstIndex);

        /* 6 zeros observed with NT */
        SMBUtil.writeInt8(0L, dst, dstIndex);
        dstIndex += 6;

        /*
         * Also observed 4 byte alignment but we stick
         * with the default for jCIFS which is 2
         */

        return dstIndex - start;
    }

    @Override

        
        // Data (16 bytes of reserved)
        int dataOffset = offset + 16 + nameLen;
        dataOffset = (dataOffset + 7) & ~7;  // 8-byte alignment
        
        for (int i = 0; i < 16; i++) {
            buffer[dataOffset + i] = 0;
        }
    }
    
    @Override
    public int size() {
        int nameLen = getName().length();

        assertSame(transaction, result);
    }

    @Test
    @DisplayName("Test pad calculation with various offsets")
    void testPadCalculation() {
        // Test pad calculation with different alignment values
        assertEquals(0, transaction.pad(0)); // Already aligned
        assertEquals(0, transaction.pad(4)); // Already aligned
        assertEquals(0, transaction.pad(8)); // Already aligned

        assertArrayEquals(pathBytes, actualPath);
    }

    @Test
    @DisplayName("Should verify size8 alignment calculation")
    void testSize8Alignment() throws Exception {
        // Given - Various path lengths to test alignment
        String[] paths = { "\\\\a\\b", // Short path
                "\\\\server\\share", // Medium path

     */
    protected int writeString(final String str, final byte[] dst, int dstIndex, final boolean unicode) {
        final int start = dstIndex;
        if (unicode) {
            // Unicode requires word alignment
            if ((dstIndex - this.headerStart) % 2 != 0) {
                dst[dstIndex++] = (byte) '\0';
            }
            System.arraycopy(Strings.getUNIBytes(str), 0, dst, dstIndex, str.length() * 2);

        }
    }

    @Nested
    @DisplayName("Size Calculation Tests")
    class SizeCalculationTests {

        @Test
        @DisplayName("Should calculate size8 without alignment")
        void testSize8NoAlignment() {
            assertEquals(8, ServerMessageBlock2.size8(8));
            assertEquals(16, ServerMessageBlock2.size8(9));
            assertEquals(16, ServerMessageBlock2.size8(15));

                byte[] buffer = new byte[256];
                int encodedSize = req.encode(buffer, 0);

                // Verify 8-byte alignment
                assertEquals(0, encodedSize % 8, "Encoded size should be 8-byte aligned for name length " + nameLen);
            }
        }

        @ParameterizedTest