/*
* Copyright 2015 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:
*
* http://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;
import org.junit.Test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.util.Map;
import static org.junit.Assert.*;
public class HostsFileParserTest {
@Test
public void testParse() throws IOException {
String hostsString = new StringBuilder()
.append("127.0.0.1 host1").append("\n") // single hostname, separated with blanks
.append("::1 host1").append("\n") // same as above, but IPv6
.append("\n") // empty line
.append("192.168.0.1\thost2").append("\n") // single hostname, separated with tabs
.append("#comment").append("\n") // comment at the beginning of the line
.append(" #comment ").append("\n") // comment in the middle of the line
.append("192.168.0.2 host3 #comment").append("\n") // comment after hostname
.append("192.168.0.3 host4 host5 host6").append("\n") // multiple aliases
.append("192.168.0.4 host4").append("\n") // host mapped to a second address, must be ignored
.append("192.168.0.5 HOST7").append("\n") // uppercase host, should match lowercase host
.append("192.168.0.6 host7").append("\n") // should be ignored since we have the uppercase host already
.toString();
HostsFileEntries entries = HostsFileParser.parse(new BufferedReader(new StringReader(hostsString)));
Map<String, Inet4Address> inet4Entries = entries.inet4Entries();
Map<String, Inet6Address> inet6Entries = entries.inet6Entries();
assertEquals("Expected 7 IPv4 entries", 7, inet4Entries.size());
assertEquals("Expected 1 IPv6 entries", 1, inet6Entries.size());
assertEquals("127.0.0.1", inet4Entries.get("host1").getHostAddress());
assertEquals("192.168.0.1", inet4Entries.get("host2").getHostAddress());
assertEquals("192.168.0.2", inet4Entries.get("host3").getHostAddress());
assertEquals("192.168.0.3", inet4Entries.get("host4").getHostAddress());
assertEquals("192.168.0.3", inet4Entries.get("host5").getHostAddress());
assertEquals("192.168.0.3", inet4Entries.get("host6").getHostAddress());
assertNotNull("uppercase host doesn't resolve", inet4Entries.get("host7"));
assertEquals("192.168.0.5", inet4Entries.get("host7").getHostAddress());
assertEquals("0:0:0:0:0:0:0:1", inet6Entries.get("host1").getHostAddress());
}
}