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A DNS library for Java and Android systems

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/*
 * Copyright 2015-2020 the original author or authors
 *
 * This software is licensed under the Apache License, Version 2.0,
 * the GNU Lesser General Public License version 2 or later ("LGPL")
 * and the WTFPL.
 * You may choose either license to govern your use of this software only
 * upon the condition that you accept all of the terms of either
 * the Apache License 2.0, the LGPL 2.1+ or the WTFPL.
 */
package org.minidns.integrationtest;

import org.minidns.DnsClient;
import org.minidns.cache.LruCache;
import org.minidns.dnsqueryresult.DnsQueryResult;
import org.minidns.record.Data;
import org.minidns.record.Record;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class CoreTest {
    @IntegrationTest
    public static void testExampleCom() throws IOException {
        DnsClient client = new DnsClient(new LruCache(1024));
        String exampleIp4 = "93.184.216.34"; // stable?
        String exampleIp6 = "2606:2800:220:1:248:1893:25c8:1946"; // stable?
        assertEquals(client.query("example.com", Record.TYPE.A).response.answerSection.get(0).payloadData.toString(), exampleIp4);
        assertEquals(client.query("www.example.com", Record.TYPE.A).response.answerSection.get(0).payloadData.toString(), exampleIp4);
        assertEquals(client.query("example.com", Record.TYPE.AAAA).response.answerSection.get(0).payloadData.toString(), exampleIp6);
        assertEquals(client.query("www.example.com", Record.TYPE.AAAA).response.answerSection.get(0).payloadData.toString(), exampleIp6);

        DnsQueryResult nsResult = client.query("example.com", Record.TYPE.NS);
        List values = new ArrayList<>();
        for (Record record : nsResult.response.answerSection) {
            values.add(record.payloadData.toString());
        }
        Collections.sort(values);
        assertEquals(values.get(0), "a.iana-servers.net.");
        assertEquals(values.get(1), "b.iana-servers.net.");
    }

    @IntegrationTest
    public static void testTcpAnswer() throws IOException {
        DnsClient client = new DnsClient(new LruCache(1024));
        client.setAskForDnssec(true);
        client.setDisableResultFilter(true);
        DnsQueryResult result = client.query("www-nsec.example.com", Record.TYPE.A);
        assertNotNull(result);
        assertTrue(result.response.toArray().length > 512);
    }
}