OptionalEntity<String> result = ldapManager.getSAMAccountGroupName(null, "testGroup");
        assertFalse(result.isPresent());
    }

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

        // Blank bindDn should return empty