UnixResolverDnsServerAddressStreamProviderTest.java — netty Source File

Source Code

/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.resolver.dns;

import io.netty.util.CharsetUtil;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.io.TempDir;

import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.UUID;

import static io.netty.resolver.dns.UnixResolverDnsServerAddressStreamProvider.parseEtcResolverOptions;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class UnixResolverDnsServerAddressStreamProviderTest {
    @Test
    public void defaultLookupShouldReturnResultsIfOnlySingleFileSpecified(@TempDir Path tempDir) throws Exception {
        File f = buildFile(tempDir, "domain linecorp.local\n" +
                           "nameserver 127.0.0.2\n" +
                           "nameserver 127.0.0.3\n");
        UnixResolverDnsServerAddressStreamProvider p =
                new UnixResolverDnsServerAddressStreamProvider(f, null);

        DnsServerAddressStream stream = p.nameServerAddressStream("somehost");
        assertHostNameEquals("127.0.0.2", stream.next());
        assertHostNameEquals("127.0.0.3", stream.next());
    }

    @Test
    public void nameServerAddressStreamShouldBeRotationalWhenRotationOptionsIsPresent(
        @TempDir Path tempDir) throws Exception {
        File f = buildFile(tempDir, "options rotate\n" +
            "domain linecorp.local\n" +
            "nameserver 127.0.0.2\n" +
            "nameserver 127.0.0.3\n" +
            "nameserver 127.0.0.4\n");
        UnixResolverDnsServerAddressStreamProvider p =
            new UnixResolverDnsServerAddressStreamProvider(f, null);

        DnsServerAddressStream stream = p.nameServerAddressStream("");
// ... (247 more lines)