assertNotNull(addresses);
        assertTrue(addresses.length > 0);
        assertEquals("127.0.0.1", addresses[0].getHostAddress());
    }

    public void test_resolve_hostname() throws UnknownHostException {
        IdnDnsResolver resolver = new IdnDnsResolver();

        // Test localhost hostname
        String host = "localhost";
        InetAddress[] addresses = resolver.resolve(host);