assertEquals("\\28objectClass=\\2a\\29", ldapManager.escapeLDAPSearchFilter("(objectClass=*)"));
    }

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

        // Null byte should be escaped to \00
        assertEquals("\\00", ldapManager.escapeLDAPSearchFilter("\0"));