Add more tests and include the forgotten chaos_test.go as well

2025-10-31 10:13:14 -04:00 · 2016-03-25 10:32:12 +00:00
parent b3a52c6988
commit e408c81a8c
7 changed files with 372 additions and 5 deletions
--- a/middleware/chaos/chaos_test.go
+++ b/middleware/chaos/chaos_test.go
@@ -0,0 +1,83 @@
+package chaos
+
+import (
+	"testing"
+
+	"github.com/miekg/coredns/middleware"
+
+	"github.com/miekg/dns"
+	"golang.org/x/net/context"
+)
+
+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, test := range tests {
+		req := new(dns.Msg)
+		if test.qtype == 0 {
+			test.qtype = dns.TypeTXT
+		}
+		req.SetQuestion(dns.Fqdn(test.qname), test.qtype)
+		em.Next = test.next
+
+		rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
+		code, err := em.ServeDNS(ctx, rec, req)
+
+		if err != test.expectedErr {
+			t.Errorf("Test %d: Expected error %v, but got %v", i, test.expectedErr, err)
+		}
+		if code != int(test.expectedCode) {
+			t.Errorf("Test %d: Expected status code %d, but got %d", i, test.expectedCode, code)
+		}
+		if test.expectedReply != "" {
+			answer := rec.Msg().Answer[0].(*dns.TXT).Txt[0]
+			if answer != test.expectedReply {
+				t.Errorf("Test %d: Expected answer %s, but got %s", i, test.expectedReply, answer)
+			}
+		}
+	}
+}
+
+func genHandler(rcode int, err error) middleware.Handler {
+	return middleware.HandlerFunc(func(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
+		return rcode, err
+	})
+}
+
+const version = "CoreDNS-001"
--- a/middleware/etcd/group_test.go
+++ b/middleware/etcd/group_test.go
@@ -0,0 +1,112 @@
+// +build etcd
+
+package etcd
+
+// etcd needs to be running on http://127.0.0.1:2379
+// *and* needs connectivity to the internet for remotely resolving
+// names.
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/miekg/coredns/middleware"
+	"github.com/miekg/coredns/middleware/etcd/msg"
+
+	"github.com/miekg/dns"
+)
+
+func TestGroupLookup(t *testing.T) {
+	for _, serv := range servicesGroup {
+		set(t, etc, serv.Key, 0, serv)
+		defer delete(t, etc, serv.Key)
+	}
+	for _, tc := range dnsTestCasesGroup {
+		m := new(dns.Msg)
+		m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
+
+		rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
+		_, err := etc.ServeDNS(ctx, rec, m)
+		if err != nil {
+			t.Errorf("expected no error, got %v\n", err)
+			return
+		}
+		resp := rec.Msg()
+
+		sort.Sort(rrSet(resp.Answer))
+		sort.Sort(rrSet(resp.Ns))
+		sort.Sort(rrSet(resp.Extra))
+
+		if resp.Rcode != tc.Rcode {
+			t.Errorf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
+			t.Logf("%v\n", resp)
+			continue
+		}
+
+		if len(resp.Answer) != len(tc.Answer) {
+			t.Errorf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
+			t.Logf("%v\n", resp)
+			continue
+		}
+		if len(resp.Ns) != len(tc.Ns) {
+			t.Errorf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
+			t.Logf("%v\n", resp)
+			continue
+		}
+		if len(resp.Extra) != len(tc.Extra) {
+			t.Errorf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
+			t.Logf("%v\n", resp)
+			continue
+		}
+
+		if !checkSection(t, tc, Answer, resp.Answer) {
+			t.Logf("%v\n", resp)
+		}
+		if !checkSection(t, tc, Ns, resp.Ns) {
+			t.Logf("%v\n", resp)
+
+		}
+		if !checkSection(t, tc, Extra, resp.Extra) {
+			t.Logf("%v\n", resp)
+		}
+	}
+}
+
+// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
+var servicesGroup = []*msg.Service{
+	{Host: "127.0.0.1", Key: "a.dom.skydns.test.", Group: "g1"},
+	{Host: "127.0.0.2", Key: "b.sub.dom.skydns.test.", Group: "g1"},
+
+	{Host: "127.0.0.1", Key: "a.dom2.skydns.test.", Group: "g1"},
+	{Host: "127.0.0.2", Key: "b.sub.dom2.skydns.test.", Group: ""},
+
+	{Host: "127.0.0.1", Key: "a.dom1.skydns.test.", Group: "g1"},
+	{Host: "127.0.0.2", Key: "b.sub.dom1.skydns.test.", Group: "g2"},
+}
+
+var dnsTestCasesGroup = []dnsTestCase{
+	// Groups
+	{
+		// hits the group 'g1' and only includes those records
+		Qname: "dom.skydns.test.", Qtype: dns.TypeA,
+		Answer: []dns.RR{
+			newA("dom.skydns.test. 300 IN A 127.0.0.1"),
+			newA("dom.skydns.test. 300 IN A 127.0.0.2"),
+		},
+	},
+	{
+		// 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. 300 IN A 127.0.0.1"),
+			newA("dom2.skydns.test. 300 IN A 127.0.0.2"),
+		},
+	},
+	{
+		// The groups differ.
+		Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
+		Answer: []dns.RR{
+			newA("dom1.skydns.test. 300 IN A 127.0.0.1"),
+		},
+	},
+}
--- a/middleware/etcd/handler.go
+++ b/middleware/etcd/handler.go
@@ -41,6 +41,7 @@ func (e Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 		// rwrite and return
 		// Nodata response
 		// also catch other types, so that they return NODATA
+		// TODO(miek) nodata function see below
 		return 0, nil
 	}
 	if isEtcdNameError(err) {
@@ -55,11 +56,12 @@ func (e Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 	}

 	if len(records) == 0 {
+		// NODATE function, see below
 		m := new(dns.Msg)
 		m.SetReply(state.Req)
 		m.Ns = []dns.RR{e.SOA(zone, state)}
 		state.W.WriteMsg(m)
-		return dns.RcodeNameError, nil
+		return dns.RcodeSuccess, nil

 	}
 	if len(records) > 0 {
@@ -68,6 +70,9 @@ func (e Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 	if len(extra) > 0 {
 		m.Extra = append(m.Extra, extra...)
 	}
+
+	m = dedup(m)
+
 	state.W.WriteMsg(m)
 	return 0, nil
 }
@@ -76,3 +81,11 @@ func (e Etcd) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (i
 func (e Etcd) NoData(zone string, state middleware.State) {
 	// TODO(miek): write it
 }
+
+func dedup(m *dns.Msg) *dns.Msg {
+	ma := make(map[string]dns.RR)
+	m.Answer = dns.Dedup(m.Answer, ma)
+	m.Ns = dns.Dedup(m.Ns, ma)
+	m.Extra = dns.Dedup(m.Extra, ma)
+	return m
+}
--- a/middleware/etcd/lookup_test.go
+++ b/middleware/etcd/lookup_test.go
@@ -36,6 +36,11 @@ var dnsTestCases = []dnsTestCase{
 		Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeSRV,
 		Answer: []dns.RR{newSRV("a.server1.dev.region1.skydns.test. 300 SRV 10 100 8080 dev.server1.")},
 	},
+	// SRV Test (case test)
+	{
+		Qname: "a.SERVer1.dEv.region1.skydns.tEst.", Qtype: dns.TypeSRV,
+		Answer: []dns.RR{newSRV("a.SERVer1.dEv.region1.skydns.tEst. 300 SRV 10 100 8080 dev.server1.")},
+	},
 	// NXDOMAIN Test
 	{
 		Qname: "doesnotexist.skydns.test.", Qtype: dns.TypeA,
--- a/middleware/etcd/other_test.go
+++ b/middleware/etcd/other_test.go
@@ -0,0 +1,154 @@
+// +build etcd
+
+// tests mx and txt records
+
+package etcd
+
+// etcd needs to be running on http://127.0.0.1:2379
+// *and* needs connectivity to the internet for remotely resolving
+// names.
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/miekg/coredns/middleware"
+	"github.com/miekg/coredns/middleware/etcd/msg"
+
+	"github.com/miekg/dns"
+)
+
+func TestOtherLookup(t *testing.T) {
+	for _, serv := range servicesOther {
+		set(t, etc, serv.Key, 0, serv)
+		defer delete(t, etc, serv.Key)
+	}
+	for _, tc := range dnsTestCasesOther {
+		m := new(dns.Msg)
+		m.SetQuestion(dns.Fqdn(tc.Qname), tc.Qtype)
+
+		rec := middleware.NewResponseRecorder(&middleware.TestResponseWriter{})
+		_, err := etc.ServeDNS(ctx, rec, m)
+		if err != nil {
+			t.Errorf("expected no error, got %v\n", err)
+			return
+		}
+		resp := rec.Msg()
+
+		sort.Sort(rrSet(resp.Answer))
+		sort.Sort(rrSet(resp.Ns))
+		sort.Sort(rrSet(resp.Extra))
+
+		if resp.Rcode != tc.Rcode {
+			t.Errorf("rcode is %q, expected %q", dns.RcodeToString[resp.Rcode], dns.RcodeToString[tc.Rcode])
+			t.Logf("%v\n", resp)
+			continue
+		}
+
+		if len(resp.Answer) != len(tc.Answer) {
+			t.Errorf("answer for %q contained %d results, %d expected", tc.Qname, len(resp.Answer), len(tc.Answer))
+			t.Logf("%v\n", resp)
+			continue
+		}
+		if len(resp.Ns) != len(tc.Ns) {
+			t.Errorf("authority for %q contained %d results, %d expected", tc.Qname, len(resp.Ns), len(tc.Ns))
+			t.Logf("%v\n", resp)
+			continue
+		}
+		if len(resp.Extra) != len(tc.Extra) {
+			t.Errorf("additional for %q contained %d results, %d expected", tc.Qname, len(resp.Extra), len(tc.Extra))
+			t.Logf("%v\n", resp)
+			continue
+		}
+
+		if !checkSection(t, tc, Answer, resp.Answer) {
+			t.Logf("%v\n", resp)
+		}
+		if !checkSection(t, tc, Ns, resp.Ns) {
+			t.Logf("%v\n", resp)
+
+		}
+		if !checkSection(t, tc, Extra, resp.Extra) {
+			t.Logf("%v\n", resp)
+		}
+	}
+}
+
+// Note the key is encoded as DNS name, while in "reality" it is a etcd path.
+var servicesOther = []*msg.Service{
+	{Host: "dev.server1", Port: 8080, Key: "a.server1.dev.region1.skydns.test."},
+
+	// mx
+	{Host: "mx.skydns.test", Priority: 50, Mail: true, Key: "a.mail.skydns.test."},
+	{Host: "mx.miek.nl", Priority: 50, Mail: true, Key: "b.mail.skydns.test."},
+	{Host: "a.ipaddr.skydns.test", Priority: 30, Mail: true, Key: "a.mx.skydns.test."},
+
+	{Host: "a.ipaddr.skydns.test", Mail: true, Key: "a.mx2.skydns.test."},
+	{Host: "b.ipaddr.skydns.test", Mail: true, Key: "b.mx2.skydns.test."},
+
+	{Host: "172.16.1.1", Key: "a.ipaddr.skydns.test."},
+	{Host: "172.16.1.2", Key: "b.ipaddr.skydns.test."},
+
+	// txt
+	{Text: "abc", Key: "a1.txt.skydns.test."},
+	{Text: "abc abc", Key: "a2.txt.skydns.test."},
+
+	// duplicate ip address
+	{Host: "10.11.11.10", Key: "http.multiport.http.skydns.test.", Port: 80},
+	{Host: "10.11.11.10", Key: "https.multiport.http.skydns.test.", Port: 443},
+}
+
+var dnsTestCasesOther = []dnsTestCase{
+	// MX Tests
+	{
+		// NODATA as this is not an Mail: true record.
+		Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeMX,
+		Ns: []dns.RR{
+			newSOA("skydns.test. 300 SOA ns.dns.skydns.test. hostmaster.skydns.test. 0 0 0 0 0"),
+		},
+	},
+	{
+		Qname: "a.mail.skydns.test.", Qtype: dns.TypeMX,
+		Answer: []dns.RR{newMX("a.mail.skydns.test. 300 IN MX 50 mx.skydns.test.")},
+		Extra: []dns.RR{
+			newA("a.ipaddr.skydns.test.	300	IN	A	172.16.1.1"),
+			newCNAME("mx.skydns.test.	300	IN	CNAME	a.ipaddr.skydns.test."),
+		},
+	},
+	{
+		Qname: "mx2.skydns.test.", Qtype: dns.TypeMX,
+		Answer: []dns.RR{
+			newMX("mx2.skydns.test. 300 IN MX 10 a.ipaddr.skydns.test."),
+			newMX("mx2.skydns.test. 300 IN MX 10 b.ipaddr.skydns.test."),
+		},
+		Extra: []dns.RR{
+			newA("a.ipaddr.skydns.test. 300 A 172.16.1.1"),
+			newA("b.ipaddr.skydns.test. 300 A 172.16.1.2"),
+		},
+	},
+	// Txt
+	{
+		Qname: "a1.txt.skydns.test.", Qtype: dns.TypeTXT,
+		Answer: []dns.RR{
+			newTXT("a1.txt.skydns.test. 300 IN TXT \"abc\""),
+		},
+	},
+	{
+		Qname: "a2.txt.skydns.test.", Qtype: dns.TypeTXT,
+		Answer: []dns.RR{
+			newTXT("a2.txt.skydns.test. 300 IN TXT \"abc abc\""),
+		},
+	},
+	{
+		Qname: "txt.skydns.test.", Qtype: dns.TypeTXT,
+		Answer: []dns.RR{
+			newTXT("txt.skydns.test. 300 IN TXT \"abc abc\""),
+			newTXT("txt.skydns.test. 300 IN TXT \"abc\""),
+		},
+	},
+	// Duplicate IP address test
+	{
+		Qname: "multiport.http.skydns.test.", Qtype: dns.TypeA,
+		Answer: []dns.RR{newA("multiport.http.skydns.test. 300 IN A 10.11.11.10")},
+	},
+}
--- a/middleware/etcd/setup_test.go
+++ b/middleware/etcd/setup_test.go
@@ -37,7 +37,7 @@ const (
 )

 func init() {
-	ctx, _ = context.WithTimeout(ctx.Background(), etcdTimeout)
+	ctx, _ = context.WithTimeout(context.Background(), etcdTimeout)

 	etcdCfg := etcdc.Config{
 		Endpoints: []string{"http://localhost:2379"},
@@ -88,7 +88,7 @@ func TestLookup(t *testing.T) {
 			t.Errorf("expected no error, got %v\n", err)
 			return
 		}
-		resp := rec.Reply()
+		resp := rec.Msg()

 		sort.Sort(rrSet(resp.Answer))
 		sort.Sort(rrSet(resp.Ns))
--- a/middleware/etcd/stub.go
+++ b/middleware/etcd/stub.go
@@ -37,8 +37,8 @@ func addStubEdns0(m *dns.Msg) *dns.Msg {
 	return m
 }

-// Look in .../dns/stub/<domain>/xx for msg.Services. Loop through them
-// extract <domain> and add them as forwarders (ip:port-combos) for
+// Look in .../dns/stub/<zone>/xx for msg.Services. Loop through them
+// extract <zone> and add them as forwarders (ip:port-combos) for
 // the stub zones. Only numeric (i.e. IP address) hosts are used.
 // TODO(miek): makes this Startup Function.
 func (e Etcd) UpdateStubZones(zone string) error {