*/
public class SmbComOpenAndX extends AndXServerMessageBlock {

    // flags (not the same as flags constructor argument)
    static final int FLAGS_RETURN_ADDITIONAL_INFO = 0x01;
    static final int FLAGS_REQUEST_OPLOCK = 0x02;
    static final int FLAGS_REQUEST_BATCH_OPLOCK = 0x04;

    // Access Mode Encoding for desiredAccess
    static final int SHARING_COMPATIBILITY = 0x00;
    static final int SHARING_DENY_READ_WRITE_EXECUTE = 0x10;

    void testLeaseStateConstants() {
        assertEquals(0x00, Smb2LeaseState.SMB2_LEASE_NONE);
        assertEquals(0x01, Smb2LeaseState.SMB2_LEASE_READ_CACHING);
        assertEquals(0x02, Smb2LeaseState.SMB2_LEASE_HANDLE_CACHING);
        assertEquals(0x04, Smb2LeaseState.SMB2_LEASE_WRITE_CACHING);
        assertEquals(0x03, Smb2LeaseState.SMB2_LEASE_READ_HANDLE);

    private static final int PRIMARY_SETUP_OFFSET = 61;
    private static final int SECONDARY_PARAMETER_OFFSET = 51;

    private static final int DISCONNECT_TID = 0x01;
    private static final int ONE_WAY_TRANSACTION = 0x02;

    private static final int PADDING_SIZE = 2;

    private final int flags = 0x00;
    private int fid;
    private int pad = 0;
    private int pad1 = 0;
    private boolean hasMore = true;

    @Test
    @DisplayName("Test all file information class constants")
    void testFileInformationClassConstants() {
        assertEquals(0x01, Smb2QueryDirectoryRequest.FILE_DIRECTORY_INFO);
        assertEquals(0x02, Smb2QueryDirectoryRequest.FILE_FULL_DIRECTORY_INFO);
        assertEquals(0x03, Smb2QueryDirectoryRequest.FILE_BOTH_DIRECTORY_INFO);
        assertEquals(0x0C, Smb2QueryDirectoryRequest.FILE_NAMES_INFO);

    void byteArrayConstructor_malformedDER_throwsWrapped() {
        // Arrange: Truncated SEQUENCE (0x30 len=2 but only 1 byte of content)
        byte[] malformed = new byte[] { 0x30, 0x02, 0x01 };

        // Act + Assert
        PACDecodingException ex = assertThrows(PACDecodingException.class, () -> new KerberosApRequest(malformed, null));
        assertTrue(ex.getMessage().contains("Malformed Kerberos Ticket"));

            request.setFileId(testFileId);
            request.setData(data, 512, 1024);
            request.setOffset(4096L);
            request.setRemainingBytes(2048);
            request.setWriteFlags(0x02);

            // Calculate expected size
            int expectedSize = ((Smb2Constants.SMB2_HEADER_LENGTH + 48 + 1024 + 7) / 8) * 8;
            assertEquals(expectedSize, request.size());

        // Assert
        assertEquals(expectedFlags, queryPolicy.getFlags());
        // Binary check for individual flags
        assertEquals(0x03, queryPolicy.getFlags()); // 0x01 | 0x02 = 0x03
    }

    @Test
    void getOpnum_shouldReturnCorrectValue() {
        // Arrange
        short level = 1;
        queryPolicy = new MsrpcQueryInformationPolicy(mockPolicyHandle, level, mockNdrObject);

     * Test file attribute constants.
     */
    @Test
    @DisplayName("File attribute constants are correct")
    void fileAttributesTest() {
        assertEquals(0x01, SmbConstants.ATTR_READONLY);
        assertEquals(0x02, SmbConstants.ATTR_HIDDEN);
        assertEquals(0x04, SmbConstants.ATTR_SYSTEM);
        assertEquals(0x08, SmbConstants.ATTR_VOLUME);
        assertEquals(0x10, SmbConstants.ATTR_DIRECTORY);
    }

    /**

            java.lang.reflect.Field flagsField = jcifs.dcerpc.DcerpcMessage.class.getDeclaredField("flags");
            flagsField.setAccessible(true);
            assertEquals(0x01 | 0x02, flagsField.get(msrpcSamrOpenAlias),
                    "flags should be initialized to DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG");
        } catch (NoSuchFieldException | IllegalAccessException e) {

    void testReadAtDifferentOffsets(int offset) throws SMBProtocolDecodingException {
        // Given
        byte[] buffer = new byte[offset + 20];
        SMBUtil.writeInt2(16, buffer, offset);
        buffer[offset + 2] = 0x02; // PIPE
        buffer[offset + 3] = 0;
        SMBUtil.writeInt4(0x1234, buffer, offset + 4);
        SMBUtil.writeInt4(0x5678, buffer, offset + 8);
        SMBUtil.writeInt4(0x9ABC, buffer, offset + 12);