* 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;

  } catch (nsee: NoSuchElementException) {
    throw IllegalArgumentException("failed to decode certificate", nsee)
  } catch (iae: IllegalArgumentException) {
    throw IllegalArgumentException("failed to decode certificate", iae)
  } catch (e: GeneralSecurityException) {
    throw IllegalArgumentException("failed to decode certificate", e)
  }
}

/**
 * Returns the certificate encoded in [PEM format][rfc_7468].
 *

            assertEquals(FileSystemInformation.FS_SIZE_INFO, fileFsSizeInfo.getFileSystemInformationClass());
        }
    }

    @Nested
    @DisplayName("Decode Method Tests")
    class DecodeMethodTests {

        @Test
        @DisplayName("Should decode buffer with typical values correctly")
        void shouldDecodeBufferWithTypicalValues() throws SMBProtocolDecodingException {

        // 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.");

            assertEquals(FileSystemInformation.FS_FULL_SIZE_INFO, fileFsFullSizeInfo.getFileSystemInformationClass());
        }
    }

    @Nested
    @DisplayName("Decode Method Tests")
    class DecodeMethodTests {

        @Test
        @DisplayName("Should decode buffer with typical values correctly")
        void shouldDecodeBufferWithTypicalValues() throws SMBProtocolDecodingException {

        void testPad8() {
            testMessage.encode(new byte[1024], 0);
            // After header is written, padding depends on position
            int headerStart = testMessage.getHeaderStart();
            assertEquals(0, headerStart); // Should start at 0
        }
    }

    @Nested
    @DisplayName("Encode/Decode Tests")
    class EncodeDecodeTests {

        @Test

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.

        bb.putShort((short) 0);

        // Decode with exact length
        int decodedSize = referral.decode(testBuffer, 0, 24);
        assertEquals(24, decodedSize);

        // Decode with excess length
        Referral referral2 = new Referral();
        decodedSize = referral2.decode(testBuffer, 0, 512);
        assertEquals(24, decodedSize);
    }

        byte[] buffer = new byte[originalContext.size()];
        originalContext.encode(buffer, 0);

        // Create a new context and decode
        DirectoryLeaseContext decodedContext = new DirectoryLeaseContext(new Smb2LeaseKey(), 0, DirectoryCacheScope.IMMEDIATE_CHILDREN);
        decodedContext.decode(buffer, 0, buffer.length);

        // Verify decoded values

     * 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;
    }