* @param handle The policy handle to close
         */
        public SamrCloseHandle(final rpc.policy_handle handle) {
            this.handle = handle;
        }

        @Override
        public void encode_in(final NdrBuffer _dst) throws NdrException {
            this.handle.encode(_dst);
        }

        @Override
        public void decode_out(final NdrBuffer _src) throws NdrException {

         * @param handle The policy handle to close
         */
        public SamrCloseHandle(final rpc.policy_handle handle) {
            this.handle = handle;
        }

        @Override
        public void encode_in(final NdrBuffer _dst) throws NdrException {
            handle.encode(_dst);
        }

        @Override
        public void decode_out(final NdrBuffer _src) throws NdrException {

            // Given: Close handle message
            samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // When: Encoding input
            message.encode_in(mockNdrBuffer);

            // Then: Should encode handle
            verify(mockPolicyHandle).encode(mockNdrBuffer);
        }

        @Test
        @DisplayName("Should decode output parameters correctly")

            buf.enc_ndr_long(0); /* momentarily skip alloc hint */
            buf.enc_ndr_short(0); /* context id */
            buf.enc_ndr_short(getOpnum());
        }

        encode_in(buf);
        this.length = buf.getIndex() - start;

        if (this.ptype == 0) {
            buf.setIndex(alloc_hint_index);
            this.alloc_hint = this.length - alloc_hint_index;

            // When/Then
            assertThrows(NullPointerException.class, () -> {
                bindWithNullBinding.encode_in(mockBuffer);
            }, "Should throw NullPointerException when binding is null");
        }

        @Test
        @DisplayName("encode_in should use default constructor values")
        void testEncodeInDefaultConstructor() throws Exception {
            // Given

            this.prefmaxlen = prefmaxlen;
            this.totalentries = totalentries;
            this.resume_handle = resume_handle;
        }

        @Override
        public void encode_in(NdrBuffer _dst) throws NdrException {
            _dst.enc_ndr_referent(servername, 1);
            if (servername != null) {
                _dst.enc_ndr_string(servername);

            }

            this.prefmaxlen = prefmaxlen;
            this.totalentries = totalentries;
            this.resume_handle = resume_handle;
        }

        @Override
        public void encode_in(NdrBuffer _dst) throws NdrException {
            _dst.enc_ndr_referent(this.servername, 1);
            if (this.servername != null) {
                _dst.enc_ndr_string(this.servername);

            }

            // Given: Close handle message
            samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // When: Encoding input
            message.encode_in(mockNdrBuffer);

            // Then: Should encode handle
            verify(mockPolicyHandle).encode(mockNdrBuffer);
        }

        @Test
        @DisplayName("Should decode output parameters correctly")

            buf.enc_ndr_long(0); /* momentarily skip alloc hint */
            buf.enc_ndr_short(0); /* context id */
            buf.enc_ndr_short(getOpnum());
        }

        encode_in(buf);
        length = buf.getIndex() - start;

        if (ptype == 0) {
            buf.setIndex(alloc_hint_index);
            alloc_hint = length - alloc_hint_index;
            buf.enc_ndr_long(alloc_hint);

 * 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;

        TestMessage() {
            /* nothing */
        }