@DisplayName("Should preserve other flags when setting signed flag")
        void testSignPreservesOtherFlags() {
            // Set initial flags with some existing flags
            int initialFlags = 0x00000001 | 0x00000002 | 0x00000004;
            SMBUtil.writeInt4(initialFlags, data, 16);

            digest.sign(data, 0, data.length, request, response);

            int flags = SMBUtil.readInt4(data, 16);

    private static final int OWNER_SECURITY_INFORMATION = 0x00000001;
    private static final int GROUP_SECURITY_INFORMATION = 0x00000002;
    private static final int DACL_SECURITY_INFORMATION = 0x00000004;
    private static final int SACL_SECURITY_INFORMATION = 0x00000008;
    private static final int ALL_SECURITY_INFORMATION = 0x0000000F;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);

     */
    int[][] DOS_ERROR_CODES = { { 0x00000000, 0x00000000 }, { 0x00010001, 0xc0000002 }, { 0x00010002, 0xc0000002 },
            { 0x00020001, 0xc000000f }, { 0x00020002, 0xc000006a }, { 0x00030001, 0xc000003a }, { 0x00030002, 0xc00000cb },
            { 0x00040002, 0xc00000ca }, { 0x00050001, 0xc0000022 }, { 0x00050002, 0xc000000d }, { 0x00060001, 0xc0000008 },

     */
    int[][] DOS_ERROR_CODES =
            { { 0x00000000, 0x00000000 }, { 0x00010001, 0xc0000002 }, { 0x00010002, 0xc0000002 }, { 0x00020001, 0xc000000f },
                    { 0x00020002, 0xc000006a }, { 0x00030001, 0xc000003a }, { 0x00030002, 0xc00000cb }, { 0x00040002, 0xc00000ca },
                    { 0x00050001, 0xc0000022 }, { 0x00050002, 0xc000000d }, { 0x00060001, 0xc0000008 }, { 0x00060002, 0xc00000cc },

        assertTrue(newNotification.getTimestamp() <= afterCreation);
    }

    @Test
    void testResourceStateConstants() {
        assertEquals(0x00000000, WitnessNotification.WITNESS_RESOURCE_STATE_UNKNOWN);
        assertEquals(0x00000001, WitnessNotification.WITNESS_RESOURCE_STATE_AVAILABLE);
        assertEquals(0x000000FF, WitnessNotification.WITNESS_RESOURCE_STATE_UNAVAILABLE);
    }

        Encdec.enc_uint32le(0x00000000, blob, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, blob, 8);
        System.arraycopy(clientChallenge, 0, blob, 16, 8);
        Encdec.enc_uint32le(0x00000000, blob, 24); // Unknown
        System.arraycopy(avPairs, 0, blob, 28, avPairsLength);
        Encdec.enc_uint32le(0x00000000, blob, 28 + avPairsLength);

        // Act

        assertTrue((DcerpcError.DCERPC_FAULT_UNK_IF & 0xFF000000) == 0x1C000000, "DCERPC_FAULT_UNK_IF should be in 0x1C range");
        assertTrue((DcerpcError.DCERPC_FAULT_PROTO_ERROR & 0xFF000000) == 0x1C000000, "DCERPC_FAULT_PROTO_ERROR should be in 0x1C range");
    }

    @Test
    @DisplayName("Should verify DcerpcException uses fault codes correctly")

        buf.enc_ndr_small(5); // RPC version
        buf.enc_ndr_small(0); // minor version
        buf.enc_ndr_small(2); // ptype = 2 (Response)
        buf.enc_ndr_small(0); // flags
        buf.enc_ndr_long(0x00000010); // data representation
        buf.enc_ndr_short(20); // length
        buf.enc_ndr_short(0); // auth length
        buf.enc_ndr_long(0); // call_id

        // Response body

    private static final int FILE_NOTIFY_CHANGE_DIR_NAME = 0x00000002;
    private static final int FILE_NOTIFY_CHANGE_ATTRIBUTES = 0x00000004;
    private static final int FILE_NOTIFY_CHANGE_SIZE = 0x00000008;
    private static final int FILE_NOTIFY_CHANGE_LAST_WRITE = 0x00000010;
    private static final int FILE_NOTIFY_CHANGE_LAST_ACCESS = 0x00000020;

        Encdec.enc_uint32le(0x00000000, temp, 4); // Reserved
        Encdec.enc_uint64le(nanos1601, temp, 8);
        System.arraycopy(clientChallenge, 0, temp, 16, 8);
        Encdec.enc_uint32le(0x00000000, temp, 24); // Unknown
        if (avPairs != null) {
            System.arraycopy(avPairs, 0, temp, 28, avPairsLength);
        }
        Encdec.enc_uint32le(0x00000000, temp, 28 + avPairsLength); // mystery bytes!