@Test
    @DisplayName("Should create configuration from Properties")
    void testConfigurationCreation() throws CIFSException {
        // Then
        assertNotNull(config);
        assertEquals("testuser", config.getDefaultUsername());
        assertEquals("testpass", config.getDefaultPassword());
        assertEquals("testdomain", config.getDefaultDomain());
    }

    @Test
    @DisplayName("Should handle null properties gracefully")

    private Configuration mockConfig;

    private BaseContext context;

    @BeforeEach
    void setUp() throws CIFSException {
        // Setup mock configuration with required methods
        when(mockConfig.getDefaultUsername()).thenReturn(null);
        when(mockConfig.getDefaultPassword()).thenReturn(null);
        when(mockConfig.getDefaultDomain()).thenReturn(null);
        when(mockConfig.getBufferCacheSize()).thenReturn(16);

        return this.delegate.getDefaultDomain();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getDefaultUsername()
     */
    @Override
    public String getDefaultUsername() {
        return this.delegate.getDefaultUsername();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Configuration#getDefaultPassword()
     */
    @Override

        when(mockDelegate.getNetbiosHostname()).thenReturn("TESTHOST");
        when(mockDelegate.getDefaultDomain()).thenReturn("WORKGROUP");
        when(mockDelegate.getDefaultUsername()).thenReturn("testuser");
        when(mockDelegate.getDefaultPassword()).thenReturn("testpass");
        when(mockDelegate.getNativeLanman()).thenReturn("jCIFS");

        // When

    }

    @Test
    @DisplayName("Test authentication configuration getters")
    void testAuthenticationConfigurationGetters() {
        assertNull(config.getDefaultDomain());
        assertNull(config.getDefaultUsername());
        assertNull(config.getDefaultPassword());
        assertTrue(config.isDisablePlainTextPasswords());
        assertEquals(3, config.getLanManCompatibility());
        assertTrue(config.isAllowNTLMFallback());

     */
    String getDefaultDomain();

    /**
     *
     * Property {@code jcifs.smb.client.username}
     *
     * @return default credentials, user name
     */
    String getDefaultUsername();

    /**
     *
     * Property {@code jcifs.smb.client.password}
     *
     * @return default credentials, password
     */
    String getDefaultPassword();

    /**

        return this.logonShare;
    }

    @Override
    public String getDefaultDomain() {
        return this.defaultDomain;
    }

    @Override
    public String getDefaultUsername() {
        return this.defaultUserName;
    }

    @Override
    public String getDefaultPassword() {
        return this.defaultPassword;
    }

    @Override

     *            context to use
     */
    public Type3Message(final CIFSContext tc) {
        setFlags(getDefaultFlags(tc));
        setDomain(tc.getConfig().getDefaultDomain());
        setUser(tc.getConfig().getDefaultUsername());
        setWorkstation(tc.getNameServiceClient().getLocalHost().getHostName());
    }

    /**
     * Creates a Type-3 message in response to the given Type-2 message.
     *
     * @param tc