@DisplayName("Hex Conversion Tests")
    class HexConversionTests {

        @Test
        @DisplayName("Various byte values are converted to uppercase hex")
        void testHexConversion() {
            byte[] challenge = new byte[] { (byte) 0x00, (byte) 0x0F, (byte) 0x10, (byte) 0x7F, (byte) 0x80, (byte) 0xFF };
            UniAddress dc = mock(UniAddress.class);
            when(dc.toString()).thenReturn("DC");

     */
    public static byte[] calculateMacHMACAES(int usage, KerberosKey baseKey, byte[] input) throws GeneralSecurityException {
        byte[] cst = { (byte) (usage >> 24 & 0xFF), (byte) (usage >> 16 & 0xFF), (byte) (usage >> 8 & 0xFF), (byte) (usage & 0xFF),
                (byte) 0x99 };

        byte[] output = new byte[12];
        byte[] dk = deriveKeyAES(baseKey, cst); // Checksum key
        try {

     */
    @Test
    public void testInvalidBufferSizeRejection() {
        // Given - Buffers with various invalid sizes
        byte[] tooSmall = new byte[1024];
        byte[] tooLarge = new byte[SmbComTransaction.TRANSACTION_BUF_SIZE + 1];
        byte[] empty = new byte[0];

        // When - Try to release invalid buffers
        assertDoesNotThrow(() -> {
            BufferCache.releaseBuffer(tooSmall);

        FileRenameInformation2 info = new FileRenameInformation2(unicodeFileName, false);

        byte[] buffer = new byte[200];
        int bytesWritten = info.encode(buffer, 0);

        // Verify the encoded data
        int nameLength = SMBUtil.readInt4(buffer, 16);
        byte[] nameBytes = new byte[nameLength];
        System.arraycopy(buffer, 20, nameBytes, 0, nameLength);

        void testWriteBytesWireFormat() {
            byte[] buffer = new byte[1024];
            int result = response.writeBytesWireFormat(buffer, 0);
            assertEquals(0, result);
        }

        @Test
        @DisplayName("Should return 0 regardless of buffer position")
        void testWriteBytesWireFormatDifferentPosition() {
            byte[] buffer = new byte[1024];

        // Verify each instance maintains its own state
        byte[] dst1 = new byte[8];
        byte[] dst2 = new byte[8];
        byte[] dst3 = new byte[8];

        notify1.writeSetupWireFormat(dst1, 0);
        notify2.writeSetupWireFormat(dst2, 0);
        notify3.writeSetupWireFormat(dst3, 0);

    @Test
    @DisplayName("Should set and get lease key")
    void testLeaseKeyAccessors() {
        byte[] newKeyBytes = new byte[] { (byte) 0xFF, (byte) 0xFE, (byte) 0xFD, (byte) 0xFC, (byte) 0xFB, (byte) 0xFA, (byte) 0xF9,
                (byte) 0xF8, (byte) 0xF7, (byte) 0xF6, (byte) 0xF5, (byte) 0xF4, (byte) 0xF3, (byte) 0xF2, (byte) 0xF1, (byte) 0xF0 };
        Smb2LeaseKey newKey = new Smb2LeaseKey(newKeyBytes);

            "3, 3", // PRINT
            "0, 0", // Unknown
            "255, -1" // Byte overflow to signed
    })
    void testDifferentShareTypes(int shareTypeValue, int expectedValue) throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[256];
        SMBUtil.writeInt2(16, buffer, 0);
        buffer[2] = (byte) shareTypeValue;

        // When
        response.readBytesWireFormat(buffer, 0);

        void testWriteSetupWireFormat() {
            byte[] dst = new byte[100];
            int result = response.writeSetupWireFormat(dst, 0);

            assertEquals(0, result);
        }

        @Test
        @DisplayName("Should return 0 for writeSetupWireFormat with offset")
        void testWriteSetupWireFormatWithOffset() {
            byte[] dst = new byte[100];

        // fid 0x1234, lastWriteTime 0 -> UTime all 0xFF
        return Stream.of(Arguments.of(0x1234, 0L, new byte[] { 0x34, 0x12, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }),
                // negative fid wraps around, lastWriteTime = 1000 -> 1 second -> int value 1
                Arguments.of(-1, 1000L, new byte[] { (byte) 0xFF, (byte) 0xFF, 0x01, 0x00, 0x00, 0x00 }));
    }

    /**