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Commit b5f35a2f authored by Miek Gieben's avatar Miek Gieben
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Add lookup tests for integration tests

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middleware/etcd/lookup_test.go 0 → 100644
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// Copyright (c) 2014 The SkyDNS Authors. All rights reserved.
// Use of this source code is governed by The MIT License (MIT) that can be
// found in the LICENSE file.
package server
// etcd needs to be running on http://127.0.0.1:4001
import (
"encoding/json"
"sort"
"testing"
"time"
backendetcd "github.com/skynetservices/skydns/backends/etcd"
"github.com/skynetservices/skydns/msg"
etcd "github.com/coreos/etcd/client"
"github.com/miekg/dns"
)
func addService(t *testing.T, s *server, k string, ttl time.Duration, m *msg.Service) {
b, err := json.Marshal(m)
if err != nil {
t.Fatal(err)
}
path, _ := msg.PathWithWildcard(k)
s.backend.(*backendetcd.Backend).Client().Set(ctx, path, string(b), &etcd.SetOptions{TTL: ttl})
}
func delService(t *testing.T, s *server, k string) {
path, _ := msg.PathWithWildcard(k)
backend.(*backendetcd.Backend).Client().Delete(ctx, path, &etcd.DeleteOptions{Recursive: false})
}
type rrSet []dns.RR
func (p rrSet) Len() int { return len(p) }
func (p rrSet) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p rrSet) Less(i, j int) bool { return p[i].String() < p[j].String() }
func TestDNS(t *testing.T) {
s := newTestServerDNSSEC(t, false)
defer s.Stop()
for _, serv := range services {
addService(t, s, serv.Key, 0, serv)
defer delService(t, s, serv.Key)
}
c := new(dns.Client)
for _, tc := range dnsTestCases {
m := new(dns.Msg)
m.SetQuestion(tc.Qname, tc.Qtype)
if tc.dnssec {
m.SetEdns0(4096, true)
}
if tc.chaos {
m.Question[0].Qclass = dns.ClassCHAOS
}
resp, _, err := c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
// try twice, be more resilent against remote lookups
// timing out.
resp, _, err = c.Exchange(m, "127.0.0.1:"+StrPort)
if err != nil {
t.Fatalf("failing: %s: %s\n", m.String(), err.Error())
}
}
sort.Sort(rrSet(resp.Answer))
sort.Sort(rrSet(resp.Ns))
sort.Sort(rrSet(resp.Extra))
fatal := false
defer func() {
if fatal {
t.Logf("question: %s\n", m.Question[0].String())
t.Logf("%s\n", resp)
}
}()
if resp.Rcode != tc.Rcode {
fatal = true
t.Fatalf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
}
if len(resp.Answer) != len(tc.Answer) {
fatal = true
t.Fatalf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
}
for i, a := range resp.Answer {
if a.Header().Name != tc.Answer[i].Header().Name {
fatal = true
t.Fatalf("answer %d should have a Header Name of %q, but has %q", i, tc.Answer[i].Header().Name, a.Header().Name)
}
if a.Header().Ttl != tc.Answer[i].Header().Ttl {
fatal = true
t.Fatalf("Answer %d should have a Header TTL of %d, but has %d", i, tc.Answer[i].Header().Ttl, a.Header().Ttl)
}
if a.Header().Rrtype != tc.Answer[i].Header().Rrtype {
fatal = true
t.Fatalf("answer %d should have a header response type of %d, but has %d", i, tc.Answer[i].Header().Rrtype, a.Header().Rrtype)
}
switch x := a.(type) {
case *dns.SRV:
if x.Priority != tc.Answer[i].(*dns.SRV).Priority {
fatal = true
t.Fatalf("answer %d should have a Priority of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Priority, x.Priority)
}
if x.Weight != tc.Answer[i].(*dns.SRV).Weight {
fatal = true
t.Fatalf("answer %d should have a Weight of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Weight, x.Weight)
}
if x.Port != tc.Answer[i].(*dns.SRV).Port {
fatal = true
t.Fatalf("answer %d should have a Port of %d, but has %d", i, tc.Answer[i].(*dns.SRV).Port, x.Port)
}
if x.Target != tc.Answer[i].(*dns.SRV).Target {
fatal = true
t.Fatalf("answer %d should have a Target of %q, but has %q", i, tc.Answer[i].(*dns.SRV).Target, x.Target)
}
case *dns.A:
if x.A.String() != tc.Answer[i].(*dns.A).A.String() {
fatal = true
t.Fatalf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Answer[i].(*dns.AAAA).AAAA.String() {
fatal = true
t.Fatalf("answer %d should have a Address of %q, but has %q", i, tc.Answer[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.TXT:
for j, txt := range x.Txt {
if txt != tc.Answer[i].(*dns.TXT).Txt[j] {
fatal = true
t.Fatalf("answer %d should have a Txt of %q, but has %q", i, tc.Answer[i].(*dns.TXT).Txt[j], txt)
}
}
case *dns.SOA:
tt := tc.Answer[i].(*dns.SOA)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.PTR:
tt := tc.Answer[i].(*dns.PTR)
if x.Ptr != tt.Ptr {
fatal = true
t.Fatalf("PTR ptr should be %q, but is %q", x.Ptr, tt.Ptr)
}
case *dns.CNAME:
tt := tc.Answer[i].(*dns.CNAME)
if x.Target != tt.Target {
fatal = true
t.Fatalf("CNAME target should be %q, but is %q", x.Target, tt.Target)
}
case *dns.MX:
tt := tc.Answer[i].(*dns.MX)
if x.Mx != tt.Mx {
t.Fatalf("MX Mx should be %q, but is %q", x.Mx, tt.Mx)
}
if x.Preference != tt.Preference {
t.Fatalf("MX Preference should be %q, but is %q", x.Preference, tt.Preference)
}
}
}
if len(resp.Ns) != len(tc.Ns) {
fatal = true
t.Fatalf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
}
for i, n := range resp.Ns {
switch x := n.(type) {
case *dns.SOA:
tt := tc.Ns[i].(*dns.SOA)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("SOA nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
case *dns.NS:
tt := tc.Ns[i].(*dns.NS)
if x.Ns != tt.Ns {
fatal = true
t.Fatalf("NS nameserver should be %q, but is %q", x.Ns, tt.Ns)
}
}
}
if len(resp.Extra) != len(tc.Extra) {
fatal = true
t.Fatalf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
}
for i, e := range resp.Extra {
switch x := e.(type) {
case *dns.A:
if x.A.String() != tc.Extra[i].(*dns.A).A.String() {
fatal = true
t.Fatalf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.A).A.String(), x.A.String())
}
case *dns.AAAA:
if x.AAAA.String() != tc.Extra[i].(*dns.AAAA).AAAA.String() {
fatal = true
t.Fatalf("extra %d should have a address of %q, but has %q", i, tc.Extra[i].(*dns.AAAA).AAAA.String(), x.AAAA.String())
}
case *dns.CNAME:
tt := tc.Extra[i].(*dns.CNAME)
if x.Target != tt.Target {
// Super super gross hack.
if x.Target == "a.ipaddr.skydns.test." && tt.Target == "b.ipaddr.skydns.test." {
// These records are randomly choosen, either one is OK.
continue
}
fatal = true
t.Fatalf("CNAME target should be %q, but is %q", x.Target, tt.Target)
}
}
}
}
}
type dnsTestCase struct {
Qname string
Qtype uint16
chaos bool
Rcode int
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
}
// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
var services = []*msg.Service{
{Host: "server1", Port: 8080, Key: "100.server1.development.region1.skydns.test."},
{Host: "server2", Port: 80, Key: "101.server2.production.region1.skydns.test."},
{Host: "server4", Port: 80, Priority: 333, Key: "102.server4.development.region6.skydns.test."},
}
var dnsTestCases = []dnsTestCase{
// Full Name Test
{
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("100.server1.development.region1.skydns.test. 3600 SRV 10 100 8080 server1.")},
},
// A Record Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Multiple A Record Test
{
Qname: "ipaddr.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("ipaddr.skydns.test. 3600 A 172.16.1.1"),
newA("ipaddr.skydns.test. 3600 A 172.16.1.2"),
},
},
// A Record Test with SRV
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("104.server1.development.region1.skydns.test. 3600 SRV 10 100 0 104.server1.development.region1.skydns.test.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// AAAAA Record Test
{
Qname: "105.server3.production.region2.skydns.test.", Qtype: dns.TypeAAAA,
Answer: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 AAAA 2001::8:8:8:8")},
},
// Multi SRV with the same target, should be dedupped.
{
Qname: "*.cname2.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.cname2.skydns.test. 3600 IN SRV 10 100 0 www.miek.nl."),
},
Extra: []dns.RR{
newA("a.miek.nl. 3600 IN A 139.162.196.78"),
newAAAA("a.miek.nl. 3600 IN AAAA 2a01:7e00::f03c:91ff:fef1:6735"),
newCNAME("www.miek.nl. 3600 IN CNAME a.miek.nl."),
},
},
// CNAME (unresolvable internal name)
{
Qname: "2.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// CNAME loop detection
{
Qname: "3.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// CNAME (resolvable external name)
{
Qname: "external1.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("a.miek.nl. 60 IN A 139.162.196.78"),
newCNAME("external1.cname.skydns.test. 60 IN CNAME www.miek.nl."),
newCNAME("www.miek.nl. 60 IN CNAME a.miek.nl."),
},
},
// CNAME (unresolvable external name)
{
Qname: "external2.cname.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{},
Ns: []dns.RR{newSOA("skydns.test. 60 SOA ns.dns.skydns.test. hostmaster.skydns.test. 1407441600 28800 7200 604800 60")},
},
// Priority Test
{
Qname: "region6.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{newSRV("region6.skydns.test. 3600 SRV 333 100 80 server4.")},
},
// Subdomain Test
{
Qname: "region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("region1.skydns.test. 3600 SRV 10 33 80 server2"),
newSRV("region1.skydns.test. 3600 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Subdomain Weight Test
{
Qname: "region5.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("region5.skydns.test. 3600 SRV 10 22 0 server2."),
newSRV("region5.skydns.test. 3600 SRV 10 36 0 server1."),
newSRV("region5.skydns.test. 3600 SRV 10 41 0 server3."),
newSRV("region5.skydns.test. 3600 SRV 30 100 0 server4.")},
},
// Wildcard Test
{
Qname: "*.region1.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("*.region1.skydns.test. 3600 SRV 10 33 0 104.server1.development.region1.skydns.test."),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 80 server2"),
newSRV("*.region1.skydns.test. 3600 SRV 10 33 8080 server1.")},
Extra: []dns.RR{newA("104.server1.development.region1.skydns.test. 3600 A 10.0.0.1")},
},
// Wildcard Test
{
Qname: "production.*.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("production.*.skydns.test. 3600 IN SRV 10 50 0 105.server3.production.region2.skydns.test."),
newSRV("production.*.skydns.test. 3600 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 IN AAAA 2001::8:8:8:8")},
},
// Wildcard Test
{
Qname: "production.any.skydns.test.", Qtype: dns.TypeSRV,
Answer: []dns.RR{
newSRV("production.any.skydns.test. 3600 IN SRV 10 50 0 105.server3.production.region2.skydns.test."),
newSRV("production.any.skydns.test. 3600 IN SRV 10 50 80 server2.")},
Extra: []dns.RR{newAAAA("105.server3.production.region2.skydns.test. 3600 IN AAAA 2001::8:8:8:8")},
},
// NXDOMAIN Test
{
Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
},
},
// NODATA Test
{
Qname: "104.server1.development.region1.skydns.test.", Qtype: dns.TypeTXT,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
// NODATA Test 2
{
Qname: "100.server1.development.region1.skydns.test.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Ns: []dns.RR{newSOA("skydns.test. 3600 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0")},
},
{
// One has group, the other has not... Include the non-group always.
Qname: "dom2.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom2.skydns.test. IN A 127.0.0.1"),
newA("dom2.skydns.test. IN A 127.0.0.2"),
},
},
{
// The groups differ.
Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
Answer: []dns.RR{
newA("dom1.skydns.test. IN A 127.0.0.1"),
},
},
}
func newA(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
func newAAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
func newCNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
func newSRV(rr string) *dns.SRV { r, _ := dns.NewRR(rr); return r.(*dns.SRV) }
func newSOA(rr string) *dns.SOA { r, _ := dns.NewRR(rr); return r.(*dns.SOA) }
func newNS(rr string) *dns.NS { r, _ := dns.NewRR(rr); return r.(*dns.NS) }
func newPTR(rr string) *dns.PTR { r, _ := dns.NewRR(rr); return r.(*dns.PTR) }
func newTXT(rr string) *dns.TXT { r, _ := dns.NewRR(rr); return r.(*dns.TXT) }
func newMX(rr string) *dns.MX { r, _ := dns.NewRR(rr); return r.(*dns.MX) }
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