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

        User user = createTestUser("testuser");
        User result = authenticationManager.load(user);
        assertEquals(user, result);
    }

    // Test load with single chain
    public void test_load_singleChain() {
        User user = createTestUser("testuser");
        User loadedUser = createTestUser("loadeduser");
        TestAuthenticationChain chain = new TestAuthenticationChain();

        List<User> users = new ArrayList<>();

        // Create test users
        for (int i = 0; i < 10; i++) {
            users.add(createTestUser("user" + i, "User " + i));
        }

        // Perform sequential operations
        for (User user : users) {
            chain.update(user);
            chain.changePassword(user.getName(), "newpass" + user.getName());
            chain.load(user);

    }

    @Test
    @DisplayName("handle: empty user/domain edge yields '@' and null password")
    void testHandleWithEmptyUserAndDomainEdge() throws Exception {
        // Default constructor results in empty strings for user and domain, null for password
        JAASAuthenticator auth = new JAASAuthenticator();
        NameCallback nc = new NameCallback("user:");
        PasswordCallback pc = new PasswordCallback("pass:", false);

    // Helper method to create test user
    private User createTestUser(String username, String password) {
        User user = new User();
        user.setName(username);
        user.setPassword(password);
        user.setRoles(new String[] { "role1", "role2" });
        user.setGroups(new String[] { "group1", "group2" });
        return user;
    }

    // Test LdapManager implementation

            "The specified user does not exist.", "The specified network password is not correct.",
            "Logon failure: unknown user name or bad password.", "Logon failure: user account restriction.",
            "Logon failure: account logon time restriction violation.", "Logon failure: user not allowed to log on to this computer.",

    }

    /**
     * The unique identifier of the user being edited.
     * This is a required field for identifying which user to update.
     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The version number of the user for optimistic locking.
     * This field is required to prevent concurrent modification conflicts
     * by ensuring the user hasn't been modified by another process.
     */

import org.apache.maven.api.annotations.Nullable;

/**
 * Service used to interact with the end user.
 *
 * @since 4.0.0
 */
@Experimental
public interface Prompter extends Service {
    /**
     * Prompts the user for a string.
     *
     * @param message the message to display to the user
     * @return the string entered by the user
     * @throws PrompterException if an exception occurs
     */
    @Nonnull

        permissionList.add("2aaa");

        allowEmptyPermission.set(true);
        assertTrue(ldapManager.allowEmptyGroupAndRole(user));
        allowEmptyPermission.set(false);
        assertTrue(ldapManager.allowEmptyGroupAndRole(user));

        permissionList.clear();
        permissionList.add("Raaa");

        allowEmptyPermission.set(true);

     * When enabled, user search queries are logged for analysis.
     */
    @Size(max = 10)
    public String searchLog;

    /**
     * Enable or disable user information tracking.
     * When enabled, user information is stored and tracked.
     */
    @Size(max = 10)
    public String userInfo;

    /**
     * Enable or disable user favorite functionality.