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// 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.
// TODO It would be nice to use a mock DNS server, to eliminate
// external dependencies.
package net
import (
"flag"
"strings"
"testing"
)
var testExternal = flag.Bool("external", true, "allow use of external networks during long test")
func TestGoogleSRV(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
_, addrs, err := LookupSRV("xmpp-server", "tcp", "google.com")
if err != nil {
t.Errorf("failed: %s", err)
}
if len(addrs) == 0 {
t.Errorf("no results")
}
// Non-standard back door.
_, addrs, err = LookupSRV("", "", "_xmpp-server._tcp.google.com")
if err != nil {
t.Errorf("back door failed: %s", err)
}
if len(addrs) == 0 {
t.Errorf("back door no results")
}
}
func TestGmailMX(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
mx, err := LookupMX("gmail.com")
if err != nil {
t.Errorf("failed: %s", err)
}
if len(mx) == 0 {
t.Errorf("no results")
}
}
func TestGmailNS(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
ns, err := LookupNS("gmail.com")
if err != nil {
t.Errorf("failed: %s", err)
}
if len(ns) == 0 {
t.Errorf("no results")
}
}
func TestGmailTXT(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
txt, err := LookupTXT("gmail.com")
if err != nil {
t.Errorf("failed: %s", err)
}
if len(txt) == 0 || len(txt[0]) == 0 {
t.Errorf("no results")
}
}
func TestGoogleDNSAddr(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
names, err := LookupAddr("8.8.8.8")
if err != nil {
t.Errorf("failed: %s", err)
}
if len(names) == 0 {
t.Errorf("no results")
}
}
func TestLookupIANACNAME(t *testing.T) {
if testing.Short() || !*testExternal {
t.Skip("skipping test to avoid external network")
}
cname, err := LookupCNAME("www.iana.org")
if !strings.HasSuffix(cname, ".icann.org.") || err != nil {
t.Errorf(`LookupCNAME("www.iana.org.") = %q, %v, want "*.icann.org.", nil`, cname, err)
}
}
var revAddrTests = []struct {
Addr string
Reverse string
ErrPrefix string
}{
{"1.2.3.4", "4.3.2.1.in-addr.arpa.", ""},
{"245.110.36.114", "114.36.110.245.in-addr.arpa.", ""},
{"::ffff:12.34.56.78", "78.56.34.12.in-addr.arpa.", ""},
{"::1", "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa.", ""},
{"1::", "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.ip6.arpa.", ""},
{"1234:567::89a:bcde", "e.d.c.b.a.9.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.6.5.0.4.3.2.1.ip6.arpa.", ""},
{"1234:567:fefe:bcbc:adad:9e4a:89a:bcde", "e.d.c.b.a.9.8.0.a.4.e.9.d.a.d.a.c.b.c.b.e.f.e.f.7.6.5.0.4.3.2.1.ip6.arpa.", ""},
{"1.2.3", "", "unrecognized address"},
{"1.2.3.4.5", "", "unrecognized address"},
{"1234:567:bcbca::89a:bcde", "", "unrecognized address"},
{"1234:567::bcbc:adad::89a:bcde", "", "unrecognized address"},
}
func TestReverseAddress(t *testing.T) {
for i, tt := range revAddrTests {
a, err := reverseaddr(tt.Addr)
if len(tt.ErrPrefix) > 0 && err == nil {
t.Errorf("#%d: expected %q, got <nil> (error)", i, tt.ErrPrefix)
continue
}
if len(tt.ErrPrefix) == 0 && err != nil {
t.Errorf("#%d: expected <nil>, got %q (error)", i, err)
}
if err != nil && err.(*DNSError).Err != tt.ErrPrefix {
t.Errorf("#%d: expected %q, got %q (mismatched error)", i, tt.ErrPrefix, err.(*DNSError).Err)
}
if a != tt.Reverse {
t.Errorf("#%d: expected %q, got %q (reverse address)", i, tt.Reverse, a)
}
}
}
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