assertEquals("LOGOUT", SsoResponseType.LOGOUT.toString());
    }

    public void test_equals() {
        // Test equals method for enum constants
        assertTrue(SsoResponseType.METADATA.equals(SsoResponseType.METADATA));
        assertTrue(SsoResponseType.LOGOUT.equals(SsoResponseType.LOGOUT));
        assertFalse(SsoResponseType.METADATA.equals(SsoResponseType.LOGOUT));

        assertNull(result);
    }

    // Test logout method
    public void test_logout_withValidUser() {
        // Setup
        FessUserBean user = FessUserBean.empty();
        String expectedUrl = "https://example.com/logout?user=testuser123";
        authenticator.setLogoutUrl(expectedUrl);

        // Execute
        String result = authenticator.logout(user);

        // Verify

        assertNotNull(response);
        assertEquals(expectedResponse, response);
    }

    // Test logout() method
    public void test_logout_whenNotAvailable() {
        currentSsoType = Constants.NONE;
        FessUserBean user = FessUserBean.empty();
        assertNull(ssoManager.logout(user));
    }

    public void test_logout_whenAvailableButNoAuthenticator() {
        currentSsoType = "invalid";

                            samlUser.getNameIdFormat(), samlUser.getNameidNameQualifier(), samlUser.getNameidSPNameQualifier());
                    return auth.logout(null, logoutRequestParams, true);
                } catch (final Exception e) {
                    logger.warn("Failed to logout from IdP: {}", samlUser, e);
                }
                return null;
            }).orElse(null);
        }
        return null;
    }

            }
        });
        log(valueMap);
    }

    /**
     * Log the logout activity.
     * @param user The user.
     */
    public void logout(final OptionalThing<FessUserBean> user) {
        final Map<String, String> valueMap = new LinkedHashMap<>();
        valueMap.put("action", Action.LOGOUT.name());
        valueMap.put("user", user.map(FessUserBean::getUserId).orElse("-"));

        assertEquals("{labels.paths}", FessLabels.LABELS_PATHS);
        assertEquals("{labels.port}", FessLabels.LABELS_PORT);
        assertEquals("{labels.regex}", FessLabels.LABELS_REGEX);

        // Test login/logout related labels
        assertEquals("{labels.login}", FessLabels.LABELS_LOGIN);
        assertEquals("{labels.login.title}", FessLabels.LABELS_LOGIN_TITLE);

            return false;
        }

        @Override
        public void login(String username, String password) throws ServletException {
        }

        @Override
        public void logout() throws ServletException {
        }

        @Override
        public Collection<Part> getParts() throws IOException, ServletException {
            return null;
        }

        @Override

            return false;
        }

        @Override
        public void login(String username, String password) {
        }

        @Override
        public void logout() {
        }

        @Override
        public java.util.Collection<jakarta.servlet.http.Part> getParts() {
            return null;
        }

        @Override

            }

            @Override
            public void login(String username, String password) throws ServletException {
            }

            @Override
            public void logout() throws ServletException {
            }

            @Override
            public java.util.Collection<jakarta.servlet.http.Part> getParts() throws IOException, ServletException {
                return null;

        }

        @Override
        public void login(String username, String password) {
            throw new UnsupportedOperationException();
        }

        @Override
        public void logout() {
            throw new UnsupportedOperationException();
        }

        @Override
        public java.util.Collection<jakarta.servlet.http.Part> getParts() {