/** Unicode capability */
    int CAP_UNICODE = 0x0004;
    /** Large files capability */
    int CAP_LARGE_FILES = 0x0008;
    /** NT SMBs capability */
    int CAP_NT_SMBS = 0x0010;
    /** RPC remote APIs capability */
    int CAP_RPC_REMOTE_APIS = 0x0020;
    /** 32-bit status codes capability */
    int CAP_STATUS32 = 0x0040;
    /** Level II oplocks capability */
    int CAP_LEVEL_II_OPLOCKS = 0x0080;

        assertEquals(0x0002, SmbConstants.CAP_MPX_MODE);
        assertEquals(0x0004, SmbConstants.CAP_UNICODE);
        assertEquals(0x0008, SmbConstants.CAP_LARGE_FILES);
        assertEquals(0x0010, SmbConstants.CAP_NT_SMBS);
        assertEquals(0x0020, SmbConstants.CAP_RPC_REMOTE_APIS);
        assertEquals(0x0040, SmbConstants.CAP_STATUS32);
        assertEquals(0x0080, SmbConstants.CAP_LEVEL_II_OPLOCKS);

        assertEquals(0x80, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_EA);
        assertEquals(0x100, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_SECURITY);
        assertEquals(0x200, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_NAME);
        assertEquals(0x400, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_SIZE);
        assertEquals(0x800, Smb2ChangeNotifyRequest.FILE_NOTIFY_CHANGE_STREAM_WRITE);
    }

    @Test

    int FLAGS2_STATUS32 = 0x4000;
    /**
     * Strings are Unicode flag.
     */
    int FLAGS2_UNICODE = 0x8000;

    /**
     * No capabilities.
     */
    int CAP_NONE = 0x0000;
    /**
     * Raw mode transfers are supported capability.
     */
    int CAP_RAW_MODE = 0x0001;
    /**
     * Multiplex mode is supported capability.
     */
    int CAP_MPX_MODE = 0x0002;
    /**

        // Testing invalid protocol ID during decode instead
        byte[] invalidBuffer = new byte[52];
        // Write invalid protocol ID
        invalidBuffer[0] = 0x00;
        invalidBuffer[1] = 0x00;
        invalidBuffer[2] = 0x00;
        invalidBuffer[3] = 0x00;

        assertThrows(IllegalArgumentException.class, () -> {
            Smb2TransformHeader.decode(invalidBuffer, 0);
        });
    }

    @Test

        @DisplayName("Signing enabled flag should be 0x0001")
        void testSigningEnabledFlag() {
            assertEquals(0x0001, Smb2Constants.SMB2_NEGOTIATE_SIGNING_ENABLED, "Signing enabled flag must be 0x0001");
        }

        @Test
        @DisplayName("Signing required flag should be 0x0002")
        void testSigningRequiredFlag() {

    // type/class
    static final int NB_IN = 0x00200001;
    static final int NBSTAT_IN = 0x00210001;
    static final int NB = 0x0020;
    static final int NBSTAT = 0x0021;
    static final int IN = 0x0001;
    static final int A = 0x0001;
    static final int NS = 0x0002;
    static final int NULL = 0x000a;

    static final int HEADER_LENGTH = 12;

    // header field offsets
    static final int OPCODE_OFFSET = 2;

    // type/class
    static final int NB_IN = 0x00200001;
    static final int NBSTAT_IN = 0x00210001;
    static final int NB = 0x0020;
    static final int NBSTAT = 0x0021;
    static final int IN = 0x0001;
    static final int A = 0x0001;
    static final int NS = 0x0002;
    static final int NULL = 0x000a;

    static final int HEADER_LENGTH = 12;

    // header field offsets
    static final int OPCODE_OFFSET = 2;

    void testSubCommandConstants() {
        assertEquals((short) 0x0001, SmbComTransaction.TRANS2_FIND_FIRST2);
        assertEquals((short) 0x0002, SmbComTransaction.TRANS2_FIND_NEXT2);
        assertEquals((short) 0x0003, SmbComTransaction.TRANS2_QUERY_FS_INFORMATION);
        assertEquals((short) 0x0005, SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION);
        assertEquals((short) 0x0007, SmbComTransaction.TRANS2_QUERY_FILE_INFORMATION);

    }

    @Test
    @DisplayName("Test close flags with different values")
    void testCloseFlagsWithDifferentValues() {
        // Test with different flag values
        int[] testFlagValues = { 0x0000, 0x0001, 0xFFFF };

        for (int flagValue : testFlagValues) {
            request.setCloseFlags(flagValue);

            byte[] buffer = new byte[256];
            request.writeBytesWireFormat(buffer, 0);