/* * Copyright 2016 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 io.netty.util.NetUtil; import org.junit.Assert; import org.junit.Test; import java.net.Inet4Address; import java.net.Inet6Address; import java.net.InetAddress; import java.util.HashMap; import java.util.Map; public class DefaultHostsFileEntriesResolverTest { /** * show issue https://github.com/netty/netty/issues/5182 * HostsFileParser tries to resolve hostnames as case-sensitive */ @Test public void testCaseInsensitivity() throws Exception { DefaultHostsFileEntriesResolver resolver = new DefaultHostsFileEntriesResolver(); //normalized somehow Assert.assertEquals(resolver.normalize("localhost"), resolver.normalize("LOCALHOST")); } @Test public void shouldntFindWhenAddressTypeDoesntMatch() { Map<String, Inet4Address> inet4Entries = new HashMap<String, Inet4Address>(); Map<String, Inet6Address> inet6Entries = new HashMap<String, Inet6Address>(); inet4Entries.put("localhost", NetUtil.LOCALHOST4); DefaultHostsFileEntriesResolver resolver = new DefaultHostsFileEntriesResolver(new HostsFileEntries(inet4Entries, inet6Entries)); InetAddress address = resolver.address("localhost", ResolvedAddressTypes.IPV6_ONLY); Assert.assertNull("Should pick an IPv6 address", address); } @Test public void shouldPickIpv4WhenBothAreDefinedButIpv4IsPreferred() { Map<String, Inet4Address> inet4Entries = new HashMap<String, Inet4Address>(); Map<String, Inet6Address> inet6Entries = new HashMap<String, Inet6Address>(); inet4Entries.put("localhost", NetUtil.LOCALHOST4); inet6Entries.put("localhost", NetUtil.LOCALHOST6); DefaultHostsFileEntriesResolver resolver = new DefaultHostsFileEntriesResolver(new HostsFileEntries(inet4Entries, inet6Entries)); InetAddress address = resolver.address("localhost", ResolvedAddressTypes.IPV4_PREFERRED); Assert.assertTrue("Should pick an IPv4 address", address instanceof Inet4Address); } @Test public void shouldPickIpv6WhenBothAreDefinedButIpv6IsPreferred() { Map<String, Inet4Address> inet4Entries = new HashMap<String, Inet4Address>(); Map<String, Inet6Address> inet6Entries = new HashMap<String, Inet6Address>(); inet4Entries.put("localhost", NetUtil.LOCALHOST4); inet6Entries.put("localhost", NetUtil.LOCALHOST6); DefaultHostsFileEntriesResolver resolver = new DefaultHostsFileEntriesResolver(new HostsFileEntries(inet4Entries, inet6Entries)); InetAddress address = resolver.address("localhost", ResolvedAddressTypes.IPV6_PREFERRED); Assert.assertTrue("Should pick an IPv6 address", address instanceof Inet6Address); } }