@Test
    public void test_escapeValue_noSpecialChars() {
        assertEquals("admin", LdapUtil.escapeValue("admin"));
        assertEquals("john.doe", LdapUtil.escapeValue("john.doe"));
        assertEquals("user123", LdapUtil.escapeValue("user123"));
        assertEquals("Test User", LdapUtil.escapeValue("Test User"));
    }

    @Test
    public void test_escapeValue_backslash() {