// Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package net import ( "sort" "testing" ) type hostTest struct { host string ips []IP } var hosttests = []hostTest{ {"odin", []IP{ IPv4(127, 0, 0, 2), IPv4(127, 0, 0, 3), ParseIP("::2"), }}, {"thor", []IP{ IPv4(127, 1, 1, 1), }}, {"loki", []IP{}}, {"ullr", []IP{ IPv4(127, 1, 1, 2), }}, {"ullrhost", []IP{ IPv4(127, 1, 1, 2), }}, } func TestLookupStaticHost(t *testing.T) { p := hostsPath hostsPath = "testdata/hosts" for i := 0; i < len(hosttests); i++ { tt := hosttests[i] ips := lookupStaticHost(tt.host) if len(ips) != len(tt.ips) { t.Errorf("# of hosts = %v; want %v", len(ips), len(tt.ips)) continue } for k, v := range ips { if tt.ips[k].String() != v { t.Errorf("lookupStaticHost(%q) = %v; want %v", tt.host, v, tt.ips[k]) } } } hostsPath = p } // https://code.google.com/p/go/issues/detail?id=6646 func TestSingleLineHostsFile(t *testing.T) { p := hostsPath hostsPath = "testdata/hosts_singleline" ips := lookupStaticHost("odin") if len(ips) != 1 || ips[0] != "127.0.0.2" { t.Errorf("lookupStaticHost = %v, want %v", ips, []string{"127.0.0.2"}) } hostsPath = p } func TestLookupHost(t *testing.T) { // Can't depend on this to return anything in particular, // but if it does return something, make sure it doesn't // duplicate addresses (a common bug due to the way // getaddrinfo works). addrs, _ := LookupHost("localhost") sort.Strings(addrs) for i := 0; i+1 < len(addrs); i++ { if addrs[i] == addrs[i+1] { t.Fatalf("LookupHost(\"localhost\") = %v, has duplicate addresses", addrs) } } }