func BenchmarkLookup(b *testing.B) {
zone, err := Parse(strings.NewReader(dbMiekNL), testzone, "stdin")
if err != nil {
return
}
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: zone}, Names: []string{testzone}}}
ctx := context.TODO()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
tc := test.Case{
Qname: "www.miek.nl.", Qtype: dns.TypeA,
Answer: []dns.RR{
test.CNAME("www.miek.nl. 1800 IN CNAME a.miek.nl."),
test.A("a.miek.nl. 1800 IN A 139.162.196.78"),
},
}
m := tc.Msg()
b.ResetTimer()
for i := 0; i < b.N; i++ {
fm.ServeDNS(ctx, rec, m)
}
}
func TestDebugLookupFalse(t *testing.T) {
for _, serv := range servicesDebug {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCasesDebugFalse {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := etc.ServeDNS(ctxt, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
continue
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestLookup(t *testing.T) {
for _, serv := range services {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
for _, tc := range dnsTestCases {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := etc.ServeDNS(ctxt, rec, m)
if err != nil {
t.Errorf("expected no error, got: %v for %s %s\n", err, m.Question[0].Name, dns.Type(m.Question[0].Qtype))
return
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func BenchmarkLookupDNSSEC(b *testing.B) {
zone, err := Parse(strings.NewReader(dbMiekNL_signed), testzone, "stdin")
if err != nil {
return
}
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: zone}, Names: []string{testzone}}}
ctx := context.TODO()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
tc := test.Case{
Qname: "b.miek.nl.", Qtype: dns.TypeA, Do: true,
Rcode: dns.RcodeNameError,
Ns: []dns.RR{
test.NSEC("archive.miek.nl. 14400 IN NSEC go.dns.miek.nl. CNAME RRSIG NSEC"),
test.RRSIG("archive.miek.nl. 14400 IN RRSIG NSEC 8 3 14400 20160426031301 20160327031301 12051 miek.nl. jEpx8lcp4do5fWXg="),
test.NSEC("miek.nl. 14400 IN NSEC a.miek.nl. A NS SOA MX AAAA RRSIG NSEC DNSKEY"),
test.RRSIG("miek.nl. 14400 IN RRSIG NSEC 8 2 14400 20160426031301 20160327031301 12051 miek.nl. mFfc3r/9PSC1H6oSpdC"),
test.RRSIG("miek.nl. 1800 IN RRSIG SOA 8 2 1800 20160426031301 20160327031301 12051 miek.nl. FIrzy07acBbtyQczy1dc="),
test.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
},
}
m := tc.Msg()
b.ResetTimer()
for i := 0; i < b.N; i++ {
fm.ServeDNS(ctx, rec, m)
}
}
func TestLoggedStatus(t *testing.T) {
var f bytes.Buffer
var next erroringMiddleware
rule := Rule{
NameScope: ".",
Format: DefaultLogFormat,
Log: log.New(&f, "", 0),
}
logger := Logger{
Rules: []Rule{rule},
Next: next,
}
ctx := context.TODO()
r := new(dns.Msg)
r.SetQuestion("example.org.", dns.TypeA)
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
rcode, _ := logger.ServeDNS(ctx, rec, r)
if rcode != 0 {
t.Error("Expected rcode to be 0 - was", rcode)
}
logged := f.String()
if !strings.Contains(logged, "A IN example.org. udp false 512") {
t.Error("Expected it to be logged. Logged string -", logged)
}
}
func (l Logger) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
state := middleware.State{W: w, Req: r}
for _, rule := range l.Rules {
if middleware.Name(rule.NameScope).Matches(state.Name()) {
responseRecorder := middleware.NewResponseRecorder(w)
rcode, err := l.Next.ServeDNS(ctx, responseRecorder, r)
if rcode > 0 {
// There was an error up the chain, but no response has been written yet.
// The error must be handled here so the log entry will record the response size.
if l.ErrorFunc != nil {
l.ErrorFunc(responseRecorder, r, rcode)
} else {
rc := middleware.RcodeToString(rcode)
answer := new(dns.Msg)
answer.SetRcode(r, rcode)
state.SizeAndDo(answer)
metrics.Report(state, metrics.Dropped, rc, answer.Len(), time.Now())
w.WriteMsg(answer)
}
rcode = 0
}
rep := middleware.NewReplacer(r, responseRecorder, CommonLogEmptyValue)
rule.Log.Println(rep.Replace(rule.Format))
return rcode, err
}
}
return l.Next.ServeDNS(ctx, w, r)
}
func TestStubCycle(t *testing.T) {
// reuse servics from stub_test.go
for _, serv := range servicesStub {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
etc.updateStubZones()
for _, tc := range dnsTestCasesCycleStub {
m := tc.Msg()
if tc.Do {
// add our wacky edns fluff
m.Extra[0] = ednsStub
}
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := etc.ServeDNS(ctxt, rec, m)
if err == nil {
t.Errorf("expected error, got none")
continue
}
// err should have been, set msg is nil, CoreDNS middlware handling takes
// care of proper error to client.
}
}
func TestLookupNil(t *testing.T) {
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: nil}, Names: []string{testzone}}}
ctx := context.TODO()
m := dnsTestCases[0].Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
fm.ServeDNS(ctx, rec, m)
}
func TestErrors(t *testing.T) {
buf := bytes.Buffer{}
em := ErrorHandler{Log: log.New(&buf, "", 0)}
testErr := errors.New("test error")
tests := []struct {
next middleware.Handler
expectedCode int
expectedLog string
expectedErr error
}{
{
next: genErrorHandler(dns.RcodeSuccess, nil),
expectedCode: dns.RcodeSuccess,
expectedLog: "",
expectedErr: nil,
},
{
next: genErrorHandler(dns.RcodeNotAuth, testErr),
expectedCode: dns.RcodeNotAuth,
expectedLog: fmt.Sprintf("[ERROR %d %s] %v\n", dns.RcodeNotAuth, "example.org. A", testErr),
expectedErr: testErr,
},
}
ctx := context.TODO()
req := new(dns.Msg)
req.SetQuestion("example.org.", dns.TypeA)
for i, tc := range tests {
em.Next = tc.next
buf.Reset()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
code, err := em.ServeDNS(ctx, rec, req)
if err != tc.expectedErr {
t.Errorf("Test %d: Expected error %v, but got %v",
i, tc.expectedErr, err)
}
if code != tc.expectedCode {
t.Errorf("Test %d: Expected status code %d, but got %d",
i, tc.expectedCode, code)
}
if log := buf.String(); !strings.Contains(log, tc.expectedLog) {
t.Errorf("Test %d: Expected log %q, but got %q",
i, tc.expectedLog, log)
}
}
}
func (m Metrics) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
state := middleware.State{W: w, Req: r}
qname := state.QName()
zone := middleware.Zones(m.ZoneNames).Matches(qname)
if zone == "" {
zone = "."
}
// Record response to get status code and size of the reply.
rw := middleware.NewResponseRecorder(w)
status, err := m.Next.ServeDNS(ctx, rw, r)
Report(state, zone, rw.Rcode(), rw.Size(), rw.Start())
return status, err
}
func TestStubLookup(t *testing.T) {
for _, serv := range servicesStub {
set(t, etc, serv.Key, 0, serv)
defer delete(t, etc, serv.Key)
}
etc.updateStubZones()
for _, tc := range dnsTestCasesStub {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := etc.ServeDNS(ctxt, rec, m)
if err != nil {
if tc.Rcode != dns.RcodeServerFailure {
t.Errorf("expected no error, got %v\n", err)
}
// This is OK, we expect this backend to *not* work.
continue
}
resp := rec.Msg()
if resp == nil {
// etcd not running?
continue
}
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestLookupZone(t *testing.T) {
zone, err := file.Parse(strings.NewReader(dbMiekNL), "miek.nl.", "stdin")
if err != nil {
return
}
fm := file.File{Next: test.ErrorHandler(), Zones: file.Zones{Z: map[string]*file.Zone{"miek.nl.": zone}, Names: []string{"miek.nl."}}}
dnskey, rm1, rm2 := newKey(t)
defer rm1()
defer rm2()
dh := NewDnssec([]string{"miek.nl."}, []*DNSKEY{dnskey}, fm)
ctx := context.TODO()
for _, tc := range dnsTestCases {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := dh.ServeDNS(ctx, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestLookupENT(t *testing.T) {
zone, err := Parse(strings.NewReader(dbMiekENTNL), testzone, "stdin")
if err != nil {
t.Fatalf("expect no error when reading zone, got %q", err)
}
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: zone}, Names: []string{testzone}}}
ctx := context.TODO()
for _, tc := range entTestCases {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := fm.ServeDNS(ctx, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestMultiLookup(t *testing.T) {
etcMulti := etc
etcMulti.Zones = []string{"skydns.test.", "miek.nl."}
etcMulti.Next = test.ErrorHandler()
for _, serv := range servicesMulti {
set(t, etcMulti, serv.Key, 0, serv)
defer delete(t, etcMulti, serv.Key)
}
for _, tc := range dnsTestCasesMulti {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := etcMulti.ServeDNS(ctxt, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestVisibleErrorWithPanic(t *testing.T) {
const panicMsg = "I'm a panic"
eh := ErrorHandler{
Debug: true,
Next: middleware.HandlerFunc(func(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
panic(panicMsg)
}),
}
ctx := context.TODO()
req := new(dns.Msg)
req.SetQuestion("example.org.", dns.TypeA)
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
code, err := eh.ServeDNS(ctx, rec, req)
if code != 0 {
t.Errorf("Expected error handler to return 0 (it should write to response), got status %d", code)
}
if err != nil {
t.Errorf("Expected error handler to return nil error (it should panic!), but got '%v'", err)
}
}
func TestLookupDNSKEY(t *testing.T) {
dnskey, rm1, rm2 := newKey(t)
defer rm1()
defer rm2()
dh := NewDnssec([]string{"miek.nl."}, []*DNSKEY{dnskey}, test.ErrorHandler())
ctx := context.TODO()
for _, tc := range dnssecTestCases {
m := tc.Msg()
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
_, err := dh.ServeDNS(ctx, rec, m)
if err != nil {
t.Errorf("expected no error, got %v\n", err)
return
}
resp := rec.Msg()
sort.Sort(test.RRSet(resp.Answer))
sort.Sort(test.RRSet(resp.Ns))
sort.Sort(test.RRSet(resp.Extra))
if !test.Header(t, tc, resp) {
t.Logf("%v\n", resp)
continue
}
if !test.Section(t, tc, test.Answer, resp.Answer) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Ns, resp.Ns) {
t.Logf("%v\n", resp)
}
if !test.Section(t, tc, test.Extra, resp.Extra) {
t.Logf("%v\n", resp)
}
}
}
func TestChaos(t *testing.T) {
em := Chaos{
Version: version,
Authors: map[string]bool{"Miek Gieben": true},
}
tests := []struct {
next middleware.Handler
qname string
qtype uint16
expectedCode int
expectedReply string
expectedErr error
}{
{
next: genHandler(dns.RcodeSuccess, nil),
qname: "version.bind",
expectedCode: dns.RcodeSuccess,
expectedReply: version,
expectedErr: nil,
},
{
next: genHandler(dns.RcodeSuccess, nil),
qname: "authors.bind",
expectedCode: dns.RcodeSuccess,
expectedReply: "Miek Gieben",
expectedErr: nil,
},
{
next: genHandler(dns.RcodeSuccess, nil),
qname: "authors.bind",
qtype: dns.TypeSRV,
expectedCode: dns.RcodeSuccess,
expectedErr: nil,
},
}
ctx := context.TODO()
for i, tc := range tests {
req := new(dns.Msg)
if tc.qtype == 0 {
tc.qtype = dns.TypeTXT
}
req.SetQuestion(dns.Fqdn(tc.qname), tc.qtype)
req.Question[0].Qclass = dns.ClassCHAOS
em.Next = tc.next
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
code, err := em.ServeDNS(ctx, rec, req)
if err != tc.expectedErr {
t.Errorf("Test %d: Expected error %v, but got %v", i, tc.expectedErr, err)
}
if code != int(tc.expectedCode) {
t.Errorf("Test %d: Expected status code %d, but got %d", i, tc.expectedCode, code)
}
if tc.expectedReply != "" {
answer := rec.Msg().Answer[0].(*dns.TXT).Txt[0]
if answer != tc.expectedReply {
t.Errorf("Test %d: Expected answer %s, but got %s", i, tc.expectedReply, answer)
}
}
}
}
func TestRewrite(t *testing.T) {
rw := Rewrite{
Next: middleware.HandlerFunc(msgPrinter),
Rules: []Rule{
NewSimpleRule("from.nl.", "to.nl."),
NewSimpleRule("CH", "IN"),
NewSimpleRule("ANY", "HINFO"),
},
noRevert: true,
}
tests := []struct {
from string
fromT uint16
fromC uint16
to string
toT uint16
toC uint16
}{
{"from.nl.", dns.TypeA, dns.ClassINET, "to.nl.", dns.TypeA, dns.ClassINET},
{"a.nl.", dns.TypeA, dns.ClassINET, "a.nl.", dns.TypeA, dns.ClassINET},
{"a.nl.", dns.TypeA, dns.ClassCHAOS, "a.nl.", dns.TypeA, dns.ClassINET},
{"a.nl.", dns.TypeANY, dns.ClassINET, "a.nl.", dns.TypeHINFO, dns.ClassINET},
// name is rewritten, type is not.
{"from.nl.", dns.TypeANY, dns.ClassINET, "to.nl.", dns.TypeANY, dns.ClassINET},
// name is not, type is, but class is, because class is the 2nd rule.
{"a.nl.", dns.TypeANY, dns.ClassCHAOS, "a.nl.", dns.TypeANY, dns.ClassINET},
}
ctx := context.TODO()
for i, tc := range tests {
m := new(dns.Msg)
m.SetQuestion(tc.from, tc.fromT)
m.Question[0].Qclass = tc.fromC
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
rw.ServeDNS(ctx, rec, m)
resp := rec.Msg()
if resp.Question[0].Name != tc.to {
t.Errorf("Test %d: Expected Name to be '%s' but was '%s'", i, tc.to, resp.Question[0].Name)
}
if resp.Question[0].Qtype != tc.toT {
t.Errorf("Test %d: Expected Type to be '%d' but was '%d'", i, tc.toT, resp.Question[0].Qtype)
}
if resp.Question[0].Qclass != tc.toC {
t.Errorf("Test %d: Expected Class to be '%d' but was '%d'", i, tc.toC, resp.Question[0].Qclass)
}
}
/*
regexps := [][]string{
{"/reg/", ".*", "/to", ""},
{"/r/", "[a-z]+", "/toaz", "!.html|"},
{"/url/", "a([a-z0-9]*)s([A-Z]{2})", "/to/{path}", ""},
{"/ab/", "ab", "/ab?{query}", ".txt|"},
{"/ab/", "ab", "/ab?type=html&{query}", ".html|"},
{"/abc/", "ab", "/abc/{file}", ".html|"},
{"/abcd/", "ab", "/a/{dir}/{file}", ".html|"},
{"/abcde/", "ab", "/a#{fragment}", ".html|"},
{"/ab/", `.*\.jpg`, "/ajpg", ""},
{"/reggrp", `/ad/([0-9]+)([a-z]*)`, "/a{1}/{2}", ""},
{"/reg2grp", `(.*)`, "/{1}", ""},
{"/reg3grp", `(.*)/(.*)/(.*)`, "/{1}{2}{3}", ""},
}
for _, regexpRule := range regexps {
var ext []string
if s := strings.Split(regexpRule[3], "|"); len(s) > 1 {
ext = s[:len(s)-1]
}
rule, err := NewComplexRule(regexpRule[0], regexpRule[1], regexpRule[2], 0, ext, nil)
if err != nil {
t.Fatal(err)
}
rw.Rules = append(rw.Rules, rule)
}
*/
/*
statusTests := []struct {
status int
base string
to string
regexp string
statusExpected bool
}{
{400, "/status", "", "", true},
{400, "/ignore", "", "", false},
{400, "/", "", "^/ignore", false},
{400, "/", "", "(.*)", true},
{400, "/status", "", "", true},
}
for i, s := range statusTests {
urlPath := fmt.Sprintf("/status%d", i)
rule, err := NewComplexRule(s.base, s.regexp, s.to, s.status, nil, nil)
if err != nil {
t.Fatalf("Test %d: No error expected for rule but found %v", i, err)
}
rw.Rules = []Rule{rule}
req, err := http.NewRequest("GET", urlPath, nil)
if err != nil {
t.Fatalf("Test %d: Could not create HTTP request: %v", i, err)
}
rec := httptest.NewRecorder()
code, err := rw.ServeHTTP(rec, req)
if err != nil {
t.Fatalf("Test %d: No error expected for handler but found %v", i, err)
}
if s.statusExpected {
if rec.Body.String() != "" {
t.Errorf("Test %d: Expected empty body but found %s", i, rec.Body.String())
}
if code != s.status {
t.Errorf("Test %d: Expected status code %d found %d", i, s.status, code)
}
} else {
if code != 0 {
t.Errorf("Test %d: Expected no status code found %d", i, code)
}
}
}
*/
}
func TestLoadBalance(t *testing.T) {
rm := RoundRobin{Next: handler()}
// the first X records must be cnames after this test
tests := []struct {
answer []dns.RR
extra []dns.RR
cnameAnswer int
cnameExtra int
}{
{
answer: []dns.RR{
newCNAME("cname1.region2.skydns.test. 300 IN CNAME cname2.region2.skydns.test."),
newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
newCNAME("cname5.region2.skydns.test. 300 IN CNAME cname6.region2.skydns.test."),
newCNAME("cname6.region2.skydns.test. 300 IN CNAME endpoint.region2.skydns.test."),
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
},
cnameAnswer: 4,
},
{
answer: []dns.RR{
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
newCNAME("cname.region2.skydns.test. 300 IN CNAME endpoint.region2.skydns.test."),
},
cnameAnswer: 1,
},
{
answer: []dns.RR{
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.2"),
newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.3"),
},
extra: []dns.RR{
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
newAAAA("endpoint.region2.skydns.test. 300 IN AAAA ::1"),
newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.3"),
newAAAA("endpoint.region2.skydns.test. 300 IN AAAA ::2"),
},
cnameAnswer: 1,
cnameExtra: 1,
},
}
rec := middleware.NewResponseRecorder(&test.ResponseWriter{})
for i, test := range tests {
req := new(dns.Msg)
req.SetQuestion("region2.skydns.test.", dns.TypeSRV)
req.Answer = test.answer
req.Extra = test.extra
_, err := rm.ServeDNS(context.TODO(), rec, req)
if err != nil {
t.Errorf("Test %d: Expected no error, but got %s", i, err)
continue
}
cname := 0
for _, r := range rec.Msg().Answer {
if r.Header().Rrtype != dns.TypeCNAME {
break
}
cname++
}
if cname != test.cnameAnswer {
t.Errorf("Test %d: Expected %d cnames in Answer, but got %d", i, test.cnameAnswer, cname)
}
cname = 0
for _, r := range rec.Msg().Extra {
if r.Header().Rrtype != dns.TypeCNAME {
break
}
cname++
}
if cname != test.cnameExtra {
t.Errorf("Test %d: Expected %d cname in Extra, but got %d", i, test.cnameExtra, cname)
}
}
}