@Test
    public void test_getOicClientId_default() {
        final String clientId = authenticator.getOicClientId();
        assertEquals("", clientId);
    }

    @Test
    public void test_getOicClientSecret_default() {
        final String secret = authenticator.getOicClientSecret();
        assertEquals("", secret);
    }

    @Test
    public void test_getOicScope_default() {