coredns/middleware/etcd/group_test.go

// +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"
	coretest "github.com/miekg/coredns/middleware/testing"

	"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 := tc.Msg()

		rec := middleware.NewResponseRecorder(&coretest.ResponseWriter{})
		_, err := etc.ServeDNS(ctx, rec, m)
		if err != nil {
			t.Errorf("expected no error, got %v\n", err)
			return
		}
		resp := rec.Msg()

		sort.Sort(coretest.RRSet(resp.Answer))
		sort.Sort(coretest.RRSet(resp.Ns))
		sort.Sort(coretest.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 !coretest.CheckSection(t, tc, coretest.Answer, resp.Answer) {
			t.Logf("%v\n", resp)
		}
		if !coretest.CheckSection(t, tc, coretest.Ns, resp.Ns) {
			t.Logf("%v\n", resp)

		}
		if !coretest.CheckSection(t, tc, coretest.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 = []coretest.Case{
	// Groups
	{
		// hits the group 'g1' and only includes those records
		Qname: "dom.skydns.test.", Qtype: dns.TypeA,
		Answer: []dns.RR{
			coretest.A("dom.skydns.test. 300 IN A 127.0.0.1"),
			coretest.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{
			coretest.A("dom2.skydns.test. 300 IN A 127.0.0.1"),
			coretest.A("dom2.skydns.test. 300 IN A 127.0.0.2"),
		},
	},
	{
		// The groups differ.
		Qname: "dom1.skydns.test.", Qtype: dns.TypeA,
		Answer: []dns.RR{
			coretest.A("dom1.skydns.test. 300 IN A 127.0.0.1"),
		},
	},
}