// Format: TOK_ID(2 bytes) | OID_LEN(2 bytes) | OID_DER | NAME_LEN(4 bytes) | NAME(bytes)
    private static byte[] buildExportName(Oid mech, String name) throws GSSException {
        byte[] der = mech.getDER();
        byte[] nb = name.getBytes();
        int len = 2 + 2 + der.length + 4 + nb.length;
        byte[] out = new byte[len];
        int i = 0;

        assertEquals(0, emptyRead);
        assertEquals(0, fullRead);
    }

    /**
     * Create a test byte array with specified size and pattern
     */
    private byte[] createTestData(int size) {
        byte[] data = new byte[size];
        for (int i = 0; i < size; i++) {
            data[i] = (byte) (i % 256);
        }
        return data;
    }

    }

    @Test
    @DisplayName("Test writeBytesWireFormat returns 0")
    void testWriteBytesWireFormat() {
        response = new Smb2QueryInfoResponse(mockConfig, (byte) 1, (byte) 2);
        byte[] dst = new byte[1024];
        int dstIndex = 0;

        int result = response.writeBytesWireFormat(dst, dstIndex);

        assertEquals(0, result);
    }

    @Test

     */
    @Test
    void testConstructorWithEmptyToken() {
        byte[] emptyToken = new byte[0];
        assertThrows(PACDecodingException.class, () -> new KerberosToken(emptyToken));
    }

    /**
     * Test constructor with a malformed token (not ASN.1).
     */
    @Test
    void testConstructorWithMalformedToken() {
        byte[] malformedToken = "This is not a valid token".getBytes();

        serverData.capabilities = 0; // No extended security
        serverData.encryptionKeyLength = 8;
        response.byteCount = 15; // 8 bytes key + 6 bytes "DOMAIN" + 1 null terminator

        // Prepare byte array
        byte[] encryptionKey = "12345678".getBytes();
        byte[] domainNameBytes = "DOMAIN".getBytes(ServerMessageBlock.OEM_ENCODING);
        ByteBuffer buffer = ByteBuffer.allocate(response.byteCount);

        void testEncodeWithoutSignature() {
            byte[] buffer = new byte[1024];

            int length = testBlock.encode(buffer, 0);

            assertTrue(length > 0);
            assertEquals(length, testBlock.getLength());
            // SMB_HEADER is {0xFF, 'S', 'M', 'B'}
            byte[] expectedHeader = { (byte) 0xFF, (byte) 'S', (byte) 'M', (byte) 'B' };

    void testCompleteWireFormatWriting() {
        trans2QueryFSInfo = new Trans2QueryFSInformation(config, FileSystemInformation.FS_SIZE_INFO);

        byte[] setupBuffer = new byte[256];
        byte[] paramBuffer = new byte[256];
        byte[] dataBuffer = new byte[256];

        int setupWritten = trans2QueryFSInfo.writeSetupWireFormat(setupBuffer, 0);

                (byte) 0xCC, (byte) 0xDD, (byte) 0xEE, (byte) 0xFF, 0x00 };

        Smb2LeaseKey key = new Smb2LeaseKey(testBytes);
        byte[] buffer = new byte[20];

        key.encode(buffer, 2);

        for (int i = 0; i < 16; i++) {
            assertEquals(testBytes[i], buffer[i + 2]);
        }
    }

    @Test
    @DisplayName("Should implement equals correctly")
    void testEquals() {

        // First decode to set internal state
        byte[] sourceBuffer = new byte[8];
        long expectedIndexNumber = 0x0123456789ABCDEFL;
        SMBUtil.writeInt8(expectedIndexNumber, sourceBuffer, 0);
        fileInternalInfo.decode(sourceBuffer, 0, sourceBuffer.length);

        // Now test encode
        byte[] destinationBuffer = new byte[8];
        int bytesEncoded = fileInternalInfo.encode(destinationBuffer, 0);

  /** Converts a string, which should contain only ascii-representable characters, to a byte[]. */
  static byte[] ascii(String string) {
    byte[] bytes = new byte[string.length()];
    for (int i = 0; i < string.length(); i++) {
      bytes[i] = (byte) string.charAt(i);
    }
    return bytes;
  }

  interface HashFn {
    byte[] hash(byte[] input, int seed);
  }