srvsvc.ShareInfo0 shareInfo0 = new srvsvc.ShareInfo0();
        shareInfo0.netname = null;

        shareInfo0.encode(mockNdrBuffer);

        // Verify the encode operations
        verify(mockNdrBuffer).align(4);
        verify(mockNdrBuffer).enc_ndr_referent(null, 1);
        // Should not encode string if netname is null
        verify(mockDeferredBuffer, never()).enc_ndr_string(anyString());
    }

    @Test

	return fmt.Errorf("%w (offline-disks=%d/%d)", writeErr, countErrs(p.errs, errDiskNotFound), len(p.writers))
}

// Encode reads from the reader, erasure-encodes the data and writes to the writers.
func (e *Erasure) Encode(ctx context.Context, src io.Reader, writers []io.Writer, buf []byte, quorum int) (total int64, err error) {
	writer := &multiWriter{
		writers:     writers,
		writeQuorum: quorum,

            byte[] largeBuffer = new byte[1000];

            // Act
            int smallEncodedSize = context.encode(smallBuffer, 0);
            int largeEncodedSize = context.encode(largeBuffer, 500);

            // Assert
            // encode() returns actual bytes written (6), not size() value (8)
            assertEquals(6, smallEncodedSize); // actual: 2 bytes count + 2*2 bytes for ciphers

        // The actual implementation reassigns _dst = _dst.deferred inside encode(), so we can't verify the exact buffer
        verify(objAttr.root_directory).encode(any(NdrBuffer.class));
        verify(objAttr.object_name).encode(any(NdrBuffer.class));
        verify(objAttr.security_quality_of_service).encode(any(NdrBuffer.class));
    }

    @Test

    }

    @ParameterizedTest(name = "decode({1}) -> {2}")
    @MethodSource("decodeProvider")
    void testDecode(String encoded, byte[] expected) {
        // Act
        byte[] actual = Base64.decode(encoded);
        // Assert
        assertArrayEquals(expected, actual, "Base64.decode should return original bytes");
    }

    @Test
    @DisplayName("encode should throw NPE on null input")
    void testEncodeNull() {

 * result extraction, header encoding/decoding, and the round-trip of an
 * encode/decode operation.
 */
public class DcerpcMessageTest {

    /**
     * A trivial concrete subclass used for testing. It simply writes a
     * single small value in {@code encode_in} and reads it in
     * {@code decode_out}.
     */
    private static class TestMessage extends DcerpcMessage {
        int decodedValue = 0;

        }

        @Test
        @DisplayName("Should encode and decode correctly with null parameters")
        void testRoundTripNullParameters() throws SMBProtocolDecodingException {
            PreauthIntegrityNegotiateContext originalContext = new PreauthIntegrityNegotiateContext(mockConfig, null, null);

            int encoded = originalContext.encode(buffer, 0);

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

            if (netname != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(netname);

            }
        }

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

    }

    /**
     * Test decode with only EOL
     */
    @Test
    @DisplayName("Decode empty list with only EOL")
    void testDecodeEmptyList() throws CIFSException {
        byte[] eolData = createEolData();
        List<AvPair> pairs = AvPairs.decode(eolData);

        assertNotNull(pairs, "Decoded pairs should not be null");

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

            if (entry_path != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(entry_path);

            }
        }

        @Override
        public void decode(NdrBuffer _src) throws NdrException {