// Owner SID with 3 sub-authorities (S-1-5-21-X-Y-Z)
        testBuffer[20] = 0x01; // revision
        testBuffer[21] = 0x03; // sub-authority count
        testBuffer[22] = 0x00; // identifier authority
        testBuffer[23] = 0x00;
        testBuffer[24] = 0x00;
        testBuffer[25] = 0x00;
        testBuffer[26] = 0x00;
        testBuffer[27] = 0x05;
        SMBUtil.writeInt4(21, testBuffer, 28); // sub-authority 1

    void testRoundTrip() throws CIFSException {
        List<AvPair> originalPairs = new LinkedList<>();
        originalPairs.add(new AvFlags(0x12345678));
        originalPairs.add(new AvTimestamp(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 }));
        originalPairs.add(new AvTargetName("TESTNAME".getBytes()));
        originalPairs.add(new AvSingleHost(new byte[] { 0x11, 0x22, 0x33, 0x44 }));

        byte[] rawBytes = new byte[] { 0x01, 0x02, 0x03, 0x04 }; // Represents 0x04030201 (little-endian)
        AvFlags avFlags = new AvFlags(rawBytes);
        assertNotNull(avFlags, "AvFlags object should not be null");
        assertEquals(0x04030201, avFlags.getFlags(), "Flags should match the raw bytes (little-endian)");

        // Test with zero
        byte[] zeroBytes = new byte[] { 0x00, 0x00, 0x00, 0x00 };

     */
    int FLAGS_NONE = 0x00;
    /**
     * Obsolete lock and read/write and unlock flag.
     */
    int FLAGS_LOCK_AND_READ_WRITE_AND_UNLOCK = 0x01;
    /**
     * Receive buffer has been posted flag.
     */
    int FLAGS_RECEIVE_BUFFER_POSTED = 0x02;
    /**
     * Path names are case-insensitive flag.
     */
    int FLAGS_PATH_NAMES_CASELESS = 0x08;
    /**
     * Path names are canonicalized flag.

    private CommonServerMessageBlock message;

    private byte[] testData;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    }

    @Test
    @DisplayName("Test sign method with valid parameters")
    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;

    // flags (not the same as flags constructor argument)
    static final int FLAGS_RETURN_ADDITIONAL_INFO = 0x01;
    static final int FLAGS_REQUEST_OPLOCK = 0x02;
    static final int FLAGS_REQUEST_BATCH_OPLOCK = 0x04;

    // Access Mode Encoding for desiredAccess
    static final int SHARING_COMPATIBILITY = 0x00;
    static final int SHARING_DENY_READ_WRITE_EXECUTE = 0x10;
    static final int SHARING_DENY_WRITE = 0x20;

                // Wrong TOK_ID
                Arguments.of("wrong TOK_ID", new byte[] { 0x00, 0x02, 0x00, 0x01 }, IllegalArgumentException.class),

                // OID length claims more than available
                Arguments.of("oid length exceeds buffer", new byte[] { 0x04, 0x01, 0x00, 0x10, 0x06 }, IllegalArgumentException.class),

        buffer[42] = 0x00;

        // Parameter displacement (2 bytes)
        buffer[43] = 0x00;
        buffer[44] = 0x00;

        // Data count (2 bytes)
        buffer[45] = 0x00;
        buffer[46] = 0x00;

        // Data offset (2 bytes)
        buffer[47] = 0x00;
        buffer[48] = 0x00;

        // Data displacement (2 bytes)
        buffer[49] = 0x00;
        buffer[50] = 0x00;

        case 0x00:
            return "This folder only";
        case 0x03:
            return "This folder, subfolders and files";
        case 0x0B:
            return "Subfolders and files only";
        case 0x02:
            return "This folder and subfolders";
        case 0x0A:
            return "Subfolders only";
        case 0x01:
            return "This folder and files";

    private static final int PRIMARY_SETUP_OFFSET = 61;
    private static final int SECONDARY_PARAMETER_OFFSET = 51;

    static final int DISCONNECT_TID = 0x01;
    static final int ONE_WAY_TRANSACTION = 0x02;

    static final int PADDING_SIZE = 4;

    private final int tflags = 0x00;
    private int pad1 = 0;
    private int pad2 = 0;
    private boolean hasMore = true;
    private boolean isPrimary = true;