forked from hashicorp/mdns
/
zone_test.go
275 lines (255 loc) · 6.5 KB
/
zone_test.go
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package mdns
import (
"bytes"
"net"
"reflect"
"testing"
"github.com/miekg/dns"
)
func makeService(t *testing.T) *MDNSService {
return makeServiceWithServiceName(t, "_http._tcp")
}
func makeServiceWithServiceName(t *testing.T, service string) *MDNSService {
m, err := NewMDNSService(
"hostname",
service,
"local.",
"testhost.",
80, // port
[]net.IP{net.IP([]byte{192, 168, 0, 42}), net.ParseIP("2620:0:1000:1900:b0c2:d0b2:c411:18bc")},
[]string{"Local web server"}) // TXT
if err != nil {
t.Fatalf("err: %v", err)
}
return m
}
func TestNewMDNSService_BadParams(t *testing.T) {
for _, test := range []struct {
testName string
hostName string
domain string
}{
{
"NewMDNSService should fail when passed hostName that is not a legal fully-qualified domain name",
"hostname", // not legal FQDN - should be "hostname." or "hostname.local.", etc.
"local.", // legal
},
{
"NewMDNSService should fail when passed domain that is not a legal fully-qualified domain name",
"hostname.", // legal
"local", // should be "local."
},
} {
_, err := NewMDNSService(
"instance name",
"_http._tcp",
test.domain,
test.hostName,
80, // port
[]net.IP{net.IP([]byte{192, 168, 0, 42})},
[]string{"Local web server"}) // TXT
if err == nil {
t.Fatalf("%s: error expected, but got none", test.testName)
}
}
}
func TestMDNSService_BadAddr(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "random",
Qtype: dns.TypeANY,
}
recs := s.Records(q)
if len(recs) != 0 {
t.Fatalf("bad: %v", recs)
}
}
func TestMDNSService_ServiceAddr(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "_http._tcp.local.",
Qtype: dns.TypeANY,
}
recs := s.Records(q)
if got, want := len(recs), 5; got != want {
t.Fatalf("got %d records, want %d: %v", got, want, recs)
}
if ptr, ok := recs[0].(*dns.PTR); !ok {
t.Errorf("recs[0] should be PTR record, got: %v, all records: %v", recs[0], recs)
} else if got, want := ptr.Ptr, "hostname._http._tcp.local."; got != want {
t.Fatalf("bad PTR record %v: got %v, want %v", ptr, got, want)
}
if _, ok := recs[1].(*dns.SRV); !ok {
t.Errorf("recs[1] should be SRV record, got: %v, all reccords: %v", recs[1], recs)
}
if _, ok := recs[2].(*dns.A); !ok {
t.Errorf("recs[2] should be A record, got: %v, all records: %v", recs[2], recs)
}
if _, ok := recs[3].(*dns.AAAA); !ok {
t.Errorf("recs[3] should be AAAA record, got: %v, all records: %v", recs[3], recs)
}
if _, ok := recs[4].(*dns.TXT); !ok {
t.Errorf("recs[4] should be TXT record, got: %v, all records: %v", recs[4], recs)
}
q.Qtype = dns.TypePTR
if recs2 := s.Records(q); !reflect.DeepEqual(recs, recs2) {
t.Fatalf("PTR question should return same result as ANY question: ANY => %v, PTR => %v", recs, recs2)
}
}
func TestMDNSService_InstanceAddr_ANY(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "hostname._http._tcp.local.",
Qtype: dns.TypeANY,
}
recs := s.Records(q)
if len(recs) != 4 {
t.Fatalf("bad: %v", recs)
}
if _, ok := recs[0].(*dns.SRV); !ok {
t.Fatalf("bad: %v", recs[0])
}
if _, ok := recs[1].(*dns.A); !ok {
t.Fatalf("bad: %v", recs[1])
}
if _, ok := recs[2].(*dns.AAAA); !ok {
t.Fatalf("bad: %v", recs[2])
}
if _, ok := recs[3].(*dns.TXT); !ok {
t.Fatalf("bad: %v", recs[3])
}
}
func TestMDNSService_InstanceAddr_SRV(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "hostname._http._tcp.local.",
Qtype: dns.TypeSRV,
}
recs := s.Records(q)
if len(recs) != 3 {
t.Fatalf("bad: %v", recs)
}
srv, ok := recs[0].(*dns.SRV)
if !ok {
t.Fatalf("bad: %v", recs[0])
}
if _, ok := recs[1].(*dns.A); !ok {
t.Fatalf("bad: %v", recs[1])
}
if _, ok := recs[2].(*dns.AAAA); !ok {
t.Fatalf("bad: %v", recs[2])
}
if srv.Port != uint16(s.Port) {
t.Fatalf("bad: %v", recs[0])
}
}
func TestMDNSService_InstanceAddr_A(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "hostname._http._tcp.local.",
Qtype: dns.TypeA,
}
recs := s.Records(q)
if len(recs) != 1 {
t.Fatalf("bad: %v", recs)
}
a, ok := recs[0].(*dns.A)
if !ok {
t.Fatalf("bad: %v", recs[0])
}
if !bytes.Equal(a.A, []byte{192, 168, 0, 42}) {
t.Fatalf("bad: %v", recs[0])
}
}
func TestMDNSService_InstanceAddr_AAAA(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "hostname._http._tcp.local.",
Qtype: dns.TypeAAAA,
}
recs := s.Records(q)
if len(recs) != 1 {
t.Fatalf("bad: %v", recs)
}
a4, ok := recs[0].(*dns.AAAA)
if !ok {
t.Fatalf("bad: %v", recs[0])
}
ip6 := net.ParseIP("2620:0:1000:1900:b0c2:d0b2:c411:18bc")
if got := len(ip6); got != net.IPv6len {
t.Fatalf("test IP failed to parse (len = %d, want %d)", got, net.IPv6len)
}
if !bytes.Equal(a4.AAAA, ip6) {
t.Fatalf("bad: %v", recs[0])
}
}
func TestMDNSService_InstanceAddr_TXT(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "hostname._http._tcp.local.",
Qtype: dns.TypeTXT,
}
recs := s.Records(q)
if len(recs) != 1 {
t.Fatalf("bad: %v", recs)
}
txt, ok := recs[0].(*dns.TXT)
if !ok {
t.Fatalf("bad: %v", recs[0])
}
if got, want := txt.Txt, s.TXT; !reflect.DeepEqual(got, want) {
t.Fatalf("TXT record mismatch for %v: got %v, want %v", recs[0], got, want)
}
}
func TestMDNSService_HostNameQuery(t *testing.T) {
s := makeService(t)
for _, test := range []struct {
q dns.Question
want []dns.RR
}{
{
dns.Question{Name: "testhost.", Qtype: dns.TypeA},
[]dns.RR{&dns.A{
Hdr: dns.RR_Header{
Name: "testhost.",
Rrtype: dns.TypeA,
Class: dns.ClassINET,
Ttl: 120,
},
A: net.IP([]byte{192, 168, 0, 42}),
}},
},
{
dns.Question{Name: "testhost.", Qtype: dns.TypeAAAA},
[]dns.RR{&dns.AAAA{
Hdr: dns.RR_Header{
Name: "testhost.",
Rrtype: dns.TypeAAAA,
Class: dns.ClassINET,
Ttl: 120,
},
AAAA: net.ParseIP("2620:0:1000:1900:b0c2:d0b2:c411:18bc"),
}},
},
} {
if got := s.Records(test.q); !reflect.DeepEqual(got, test.want) {
t.Errorf("hostname query failed: s.Records(%v) = %v, want %v", test.q, got, test.want)
}
}
}
func TestMDNSService_serviceEnum_PTR(t *testing.T) {
s := makeService(t)
q := dns.Question{
Name: "_services._dns-sd._udp.local.",
Qtype: dns.TypePTR,
}
recs := s.Records(q)
if len(recs) != 1 {
t.Fatalf("bad: %v", recs)
}
if ptr, ok := recs[0].(*dns.PTR); !ok {
t.Errorf("recs[0] should be PTR record, got: %v, all records: %v", recs[0], recs)
} else if got, want := ptr.Ptr, "_http._tcp.local."; got != want {
t.Fatalf("bad PTR record %v: got %v, want %v", ptr, got, want)
}
}