length = 0;
        deferred = this;
    }

    /**
     * Creates a derived NdrBuffer at the specified index position.
     *
     * @param idx the index position for the derived buffer
     * @return the derived NdrBuffer
     */
    public NdrBuffer derive(final int idx) {
        final NdrBuffer nb = new NdrBuffer(buf, start);
        nb.index = idx;
        nb.deferred = deferred;
        return nb;
    }

        this.length = 0;
        this.deferred = this;
    }

    /**
     * Creates a derived NdrBuffer at the specified index position.
     *
     * @param idx the index position for the derived buffer
     * @return the derived NdrBuffer
     */
    public NdrBuffer derive(final int idx) {
        final NdrBuffer nb = new NdrBuffer(this.buf, this.start);
        nb.index = idx;
        nb.deferred = this.deferred;
        return nb;

        byte[] encodeBuffer = new byte[1024];
        NdrBuffer dst = new NdrBuffer(encodeBuffer, 0);
        info1.encode(dst);

        ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
        // Use the encoded buffer for decoding
        NdrBuffer src = new NdrBuffer(encodeBuffer, 0);
        netdfs.DfsInfo1 decodedInfo1 = new netdfs.DfsInfo1();

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

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

            }
        }

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

        try {
            final NdrBuffer buf = encodeMessage(msg, out);
            final int off = sendFragments(msg, out, buf);

            // last fragment gets written (possibly) using transact/call semantics
            final int have = doSendReceiveFragment(out, off, msg.length, inB);

            if (have != 0) {
                final NdrBuffer hdrBuf = new NdrBuffer(inB, 0);

package jcifs.smb1.dcerpc;

import jcifs.smb1.dcerpc.ndr.NdrBuffer;
import jcifs.smb1.dcerpc.ndr.NdrException;
import jcifs.smb1.dcerpc.ndr.NdrObject;

/**
 * RPC data structure definitions for DCE/RPC protocol support.
 * This class contains NDR (Network Data Representation) encodable/decodable structures
 * used in DCE/RPC communications.
 */
public class rpc {

    /**
     * Private constructor to prevent instantiation of utility class.

        ndrBuffer.advance(10);
        assertEquals(10, ndrBuffer.getIndex());
        assertEquals(10, ndrBuffer.getLength());

        ndrBuffer.advance(5);
        assertEquals(15, ndrBuffer.getIndex());
        assertEquals(15, ndrBuffer.getLength());

        // Advance past current length
        ndrBuffer.setLength(10);
        ndrBuffer.setIndex(10);
        ndrBuffer.advance(10);

        domainInfo.sid.sub_authority = new int[] { 21, 12345 };

        // Encode to buffer
        byte[] buffer = new byte[1024];
        NdrBuffer encodeBuffer = new NdrBuffer(buffer, 0);
        domainInfo.encode(encodeBuffer);

        // Decode from buffer
        NdrBuffer decodeBuffer = new NdrBuffer(buffer, 0);
        lsarpc.LsarDomainInfo decodedInfo = new lsarpc.LsarDomainInfo();
        decodedInfo.decode(decodeBuffer);

    }

    /**
     * Verify that the encode method forwards the value to NdrBuffer.
     */
    @Test
    @DisplayName("Encode should call NdrBuffer.enc_ndr_hyper with correct value")
    public void testEncodeInteraction() throws NdrException {
        NdrBuffer buf = mock(NdrBuffer.class);
        NdrHyper hyper = new NdrHyper(12345L);
        hyper.encode(buf);

            // Mock encoding buffer
            NdrBuffer encodeBuffer = mock(NdrBuffer.class);
            when(encodeBuffer.derive(anyInt())).thenReturn(encodeBuffer);
            originalUuid.encode(encodeBuffer);

            // Mock decoding buffer with the same values
            NdrBuffer decodeBuffer = mock(NdrBuffer.class);
            when(decodeBuffer.dec_ndr_long()).thenReturn(originalUuid.time_low);