return ret;
    }

    /**
     * Generates the NTOWFv2 hash for the given domain, username, and password.
     *
     * @param domain the authentication domain
     * @param username the username
     * @param password the password
     *
     * @return the calculated mac
     */

        lenient().when(mockHost.getHostName()).thenReturn("TEST_HOSTNAME");

        return mockCtx;
    }

    @Test
    @DisplayName("Should create Type 3 message with authentication data")
    void testType3MessageCreation() throws Exception {
        // Given
        Type2Message type2 = createMockType2Message();
        String password = "testpassword";
        String domain = "TESTDOMAIN";

     * @throws SmbException if an error occurs checking signing status
     */
    boolean isSigningEnforced() throws SmbException;

    /**
     * Gets the server's encryption key for authentication.
     *
     * @return the encryption key used by the server
     */
    byte[] getServerEncryptionKey();

    /**
     * Gets or creates an SMB session for the given context.
     *

    // retry, we return true and try a new route.
    return true
  }

  /**
   * Figures out the HTTP request to make in response to receiving [userResponse]. This will
   * either add authentication headers, follow redirects or handle a client request timeout. If a
   * follow-up is either unnecessary or not applicable, this returns null.
   */
  @Throws(IOException::class)
  private fun followUpRequest(

    }

    public void test_throwAndCatch() {
        // Test throwing and catching the exception
        String expectedMessage = "LDAP authentication failed";
        try {
            throw new LdapOperationException(expectedMessage);
        } catch (LdapOperationException e) {
            assertEquals(expectedMessage, e.getMessage());

        PERMANENT, // Operation cannot succeed
        FATAL // Connection or session must be terminated
    }

    /**
     * Error categories
     */
    public enum Category {
        AUTHENTICATION, AUTHORIZATION, NETWORK, PROTOCOL, RESOURCE, CONFIGURATION, ENCRYPTION, TIMEOUT, IO, UNKNOWN
    }

    private final int errorCode;
    private final Severity severity;
    private final Category category;

     * however the username can be {@code null} indication anonymous
     * credentials were used (e.g. some IPC$ services).
     */

    /**
     * Returns the principal used for authentication
     *
     * @return the authentication principal
     */
    public Principal getPrincipal() {
        return auth;
    }

    /**
     * Returns the last component of the target URL. This will

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import jcifs.CIFSException;
import jcifs.smb.PreauthIntegrityService.PreauthIntegrityContext;

/**
 * Comprehensive tests for enhanced pre-authentication integrity service.
 */
public class PreauthIntegrityServiceTest {

    private PreauthIntegrityService preauthService;
    private SecureRandom secureRandom;

    @BeforeEach
    public void setUp() {

        assertFalse(exception.isAuthenticationError());
        assertFalse(exception.isFileSystemError());
        assertFalse(exception.isTransientError());

        // Authentication error
        exception = new SmbOperationException(SmbOperationException.ErrorCode.INVALID_CREDENTIALS, "Bad password");
        assertFalse(exception.isNetworkError());
        assertTrue(exception.isAuthenticationError());

        }
    }

    @Test
    @DisplayName("Should return false if neither renewable nor NTLM authentication succeeds")
    void testRenewCredentials_NoRenewalPossible() {
        // Ensure credentials are not renewable