1 files changed, 79 insertions, 0 deletions
diff --git a/plugin/etcd/cname_test.go b/plugin/etcd/cname_test.go
new file mode 100644
index 000000000..33291094b
--- /dev/null
+++ b/plugin/etcd/cname_test.go
@@ -0,0 +1,79 @@
+// +build etcd
+
+package etcd
+
+// etcd needs to be running on http://localhost:2379
+
+import (
+	"testing"
+
+	"github.com/coredns/coredns/plugin/etcd/msg"
+	"github.com/coredns/coredns/plugin/pkg/dnsrecorder"
+	"github.com/coredns/coredns/plugin/test"
+
+	"github.com/miekg/dns"
+)
+
+// Check the ordering of returned cname.
+func TestCnameLookup(t *testing.T) {
+	etc := newEtcdMiddleware()
+
+	for _, serv := range servicesCname {
+		set(t, etc, serv.Key, 0, serv)
+		defer delete(t, etc, serv.Key)
+	}
+	for _, tc := range dnsTestCasesCname {
+		m := tc.Msg()
+
+		rec := dnsrecorder.New(&test.ResponseWriter{})
+		_, err := etc.ServeDNS(ctxt, rec, m)
+		if err != nil {
+			t.Errorf("expected no error, got %v\n", err)
+			return
+		}
+
+		resp := rec.Msg
+		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)
+		}
+	}
+}
+
+var servicesCname = []*msg.Service{
+	{Host: "cname1.region2.skydns.test", Key: "a.server1.dev.region1.skydns.test."},
+	{Host: "cname2.region2.skydns.test", Key: "cname1.region2.skydns.test."},
+	{Host: "cname3.region2.skydns.test", Key: "cname2.region2.skydns.test."},
+	{Host: "cname4.region2.skydns.test", Key: "cname3.region2.skydns.test."},
+	{Host: "cname5.region2.skydns.test", Key: "cname4.region2.skydns.test."},
+	{Host: "cname6.region2.skydns.test", Key: "cname5.region2.skydns.test."},
+	{Host: "endpoint.region2.skydns.test", Key: "cname6.region2.skydns.test."},
+	{Host: "10.240.0.1", Key: "endpoint.region2.skydns.test."},
+}
+
+var dnsTestCasesCname = []test.Case{
+	{
+		Qname: "a.server1.dev.region1.skydns.test.", Qtype: dns.TypeSRV,
+		Answer: []dns.RR{
+			test.SRV("a.server1.dev.region1.skydns.test.	300	IN	SRV	10 100 0 cname1.region2.skydns.test."),
+		},
+		Extra: []dns.RR{
+			test.CNAME("cname1.region2.skydns.test.	300	IN	CNAME	cname2.region2.skydns.test."),
+			test.CNAME("cname2.region2.skydns.test.	300	IN	CNAME	cname3.region2.skydns.test."),
+			test.CNAME("cname3.region2.skydns.test.	300	IN	CNAME	cname4.region2.skydns.test."),
+			test.CNAME("cname4.region2.skydns.test.	300	IN	CNAME	cname5.region2.skydns.test."),
+			test.CNAME("cname5.region2.skydns.test.	300	IN	CNAME	cname6.region2.skydns.test."),
+			test.CNAME("cname6.region2.skydns.test.	300	IN	CNAME	endpoint.region2.skydns.test."),
+			test.A("endpoint.region2.skydns.test.	300	IN	A	10.240.0.1"),
+		},
+	},
+}