@Override
        public void encode(NdrBuffer _dst) throws NdrException {
            _dst.align(4);
            _dst.enc_ndr_referent(sid, 1);

            if (sid != null) {
                _dst = _dst.deferred;
                sid.encode(_dst);

            }
        }

        @Override
        public void decode(NdrBuffer _src) throws NdrException {
            _src.align(4);

        SMBUtil.writeInt2(20, buffer, 42); // byteCount

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

        assertTrue(length > 0);
        assertEquals(4, testBlock.wordCount);
        assertNull(testBlock.getAndx());
    }

    @Test
    @DisplayName("Test decode with retain payload")
    void testDecodeWithRetainPayload() throws SMBProtocolDecodingException {

    public void setInterfaces(List<NetworkInterfaceInfo> interfaces) {
        this.interfaces = interfaces;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(byte[] buffer, int bufferIndex, int len) {
        int start = bufferIndex;
        int end = start + len;
        interfaces.clear();

        // Call the decode method
        ndrLong.decode(mockNdrBuffer);

        // Verify that dec_ndr_long was called exactly once
        verify(mockNdrBuffer, times(1)).dec_ndr_long();
        // Verify that the value field was updated correctly
        assertEquals(decodedValue, ndrLong.value, "Decode should correctly assign the value returned by dec_ndr_long.");

        return stream(getRoles()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    @Override
    public String[] getGroupNames() {
        return stream(getGroups()).get(stream -> stream.map(this::decode).toArray(n -> new String[n]));
    }

    private String decode(final String value) {
        return new String(Base64.getDecoder().decode(value), Constants.CHARSET_UTF_8);
    }

    @Override

        // When - Decode
        FileBasicInfo decodedInfo = new FileBasicInfo();
        int bytesDecoded = decodedInfo.decode(buffer, 0, bytesEncoded);

        // Then
        assertEquals(40, bytesEncoded);
        assertEquals(36, bytesDecoded); // decode returns 36, encode returns 40
        assertEquals(originalInfo.getCreateTime(), decodedInfo.getCreateTime());

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

/**
 * JUnit 5 tests for AndXServerMessageBlock in legacy smb1 package.
 *
 * The tests use small stub subclasses to drive encode/decode paths and
 * validate batching, chaining, signing, and NT_CREATE_ANDX extended handling.
 */
class AndXServerMessageBlockTest {

    /**
     * Test stub for AndXServerMessageBlock to control read/write logic.

      return decode(certificatePem, pkcs8Base64)
    }

    private fun decode(
      certificatePem: String,
      pkcs8Base64Text: String,
    ): HeldCertificate {
      val certificate = certificatePem.decodeCertificatePem()

      val pkcs8Bytes =
        pkcs8Base64Text.decodeBase64()
          ?: throw IllegalArgumentException("failed to decode private key")

     *
     * @return the appropriate decodable object for the control code, or null if not recognized
     */
    protected Decodable createInputDecodable() {
        return null;
    }

    /**
     * Gets the output data decoded as the specified response type.
     *
     * @param <T> the type of the decoded response data

     * Decodes a 32-bit unsigned integer from little-endian byte order.
     *
     * @param src the source byte array
     * @param si the starting index in the source array
     * @return the decoded integer value
     */
    public static int dec_uint32le(final byte[] src, final int si) {
        return src[si] & 0xFF | (src[si + 1] & 0xFF) << 8 | (src[si + 2] & 0xFF) << 16 | (src[si + 3] & 0xFF) << 24;
    }