}

    @Test
    public void test_constructor() {
        // Test constructor initializes fields correctly
        LdapUser user = new LdapUser(testEnv, "username");
        assertEquals("username", user.getName());
        assertSame(testEnv, user.getEnvironment());
        assertNull(user.permissions);
    }

    @Test
    public void test_getName() {
        // Test getName returns the correct name

            public boolean isLdapIgnoreNetbiosName() {
                return false;
            }
        });
        sambaHelper.init();

        // Test User SID (type 1)
        assertEquals("1Test User", sambaHelper.getAccountId(createMockSID(1, "Test User")));

        // Test Domain Group SID (type 2)
        assertEquals("2Domain Group", sambaHelper.getAccountId(createMockSID(2, "Domain Group")));

        activityHelper.accessDenied(createUser("testuser", new String[0]), "/admin/user/");
        assertEquals("action:ACCESS_DENIED\tuser:testuser\tpath:/admin/user/", localLogMsg.get());

        activityHelper.accessDenied(createUser("testuser", new String[] { "111", "222" }), "/admin/role/");
        assertEquals("action:ACCESS_DENIED\tuser:testuser\tpath:/admin/role/", localLogMsg.get());
    }

    @Test

        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);

    // 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

        // Test with single role - not matching
        assertFalse(fessUserBean.hasRole("user"));

        // Test with multiple roles
        testUser.setRoleNames(new String[] { "admin", "user", "manager" });
        assertTrue(fessUserBean.hasRole("admin"));
        assertTrue(fessUserBean.hasRole("user"));
        assertTrue(fessUserBean.hasRole("manager"));
        assertFalse(fessUserBean.hasRole("guest"));

        assertNotNull(exception);
        assertEquals("User is not found: null", exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test
    public void test_constructor_withSpecialCharacters() {
        // Test with username containing special characters
        String username = "user@domain.com";
        FessUserNotFoundException exception = new FessUserNotFoundException(username);

        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);

        this.sessionId = sessionId;
    }

    /**
     * Gets the user ID.
     *
     * @return the user ID
     */
    public String getUserId() {
        return userId;
    }

    /**
     * Sets the user ID.
     *
     * @param userId the user ID
     */
    public void setUserId(final String userId) {
        this.userId = userId;
    }

    /**

     * 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",