assertEquals("user123", ldapManager.escapeLDAPSearchFilter("user123"));
        assertEquals("user.name", ldapManager.escapeLDAPSearchFilter("user.name"));
    }

    @Test
    public void test_escapeLDAPSearchFilter_withBackslash() {
        LdapManager ldapManager = new LdapManager();
        ldapManager.init();

        // Backslash should be escaped to \5c
        assertEquals("\\5c", ldapManager.escapeLDAPSearchFilter("\\"));