coredns/plugin/etcd/group_test.go

//go:build etcd

package etcd

import (
	"testing"

	"github.com/coredns/coredns/plugin/etcd/msg"
	"github.com/coredns/coredns/plugin/pkg/dnstest"
	"github.com/coredns/coredns/plugin/test"

	"github.com/miekg/dns"
)

func TestGroupLookup(t *testing.T) {
	etc := newEtcdPlugin()

	for _, serv := range servicesGroup {
		set(t, etc, serv.Key, 0, serv)
		defer delete(t, etc, serv.Key)
	}
	for _, tc := range dnsTestCasesGroup {
		m := tc.Msg()

		rec := dnstest.NewRecorder(&test.ResponseWriter{})
		_, err := etc.ServeDNS(ctxt, rec, m)
		if err != nil {
			t.Errorf("Expected no error, got %v", err)
			continue
		}

		resp := rec.Msg
		if err := test.SortAndCheck(resp, tc); err != nil {
			t.Error(err)
		}
	}
}

// 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"},

	{Text: "foo", Key: "a.dom3.skydns.test.", Group: "g1"},
	{Text: "bar", Key: "b.sub.dom3.skydns.test.", Group: "g1"},
}

var dnsTestCasesGroup = []test.Case{
	// Groups
	{
		// hits the group 'g1' and only includes those A records
		Qname: "dom.skydns.test.", Qtype: dns.TypeA,
		Answer: []dns.RR{
			test.A("dom.skydns.test. 300 IN A 127.0.0.1"),
			test.A("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{
			test.A("dom2.skydns.test. 300 IN A 127.0.0.1"),
			test.A("dom2.skydns.test. 300 IN A 127.0.0.2"),
		},
	},
	{
		// The groups differ.
		Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
		Answer: []dns.RR{
			test.A("dom1.skydns.test. 300 IN A 127.0.0.1"),
		},
	},
	{
		// hits the group 'g1' and only includes those TXT records
		Qname: "dom3.skydns.test.", Qtype: dns.TypeTXT,
		Answer: []dns.RR{
			test.TXT("dom3.skydns.test. 300 IN TXT bar"),
			test.TXT("dom3.skydns.test. 300 IN TXT foo"),
		},
	},
}