import java.net.UnknownHostException;

import org.junit.jupiter.api.Test;

/**
 * Unit tests for IpAddressUtil class.
 */
public class IpAddressUtilTest {

    @Test
    public void testCompressIPv6() {
        // Test IPv6 compression (using reflection to access protected method)
        try {
            java.lang.reflect.Method method = IpAddressUtil.class.getDeclaredMethod("compressIPv6", String.class);