117 lines
3 KiB
Go
117 lines
3 KiB
Go
package federation
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import (
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"context"
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"testing"
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"github.com/coredns/coredns/plugin/kubernetes"
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"github.com/coredns/coredns/plugin/pkg/dnstest"
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"github.com/coredns/coredns/plugin/test"
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"github.com/miekg/dns"
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)
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func TestIsNameFederation(t *testing.T) {
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tests := []struct {
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fed string
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qname string
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expectedZone string
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}{
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{"prod", "nginx.mynamespace.prod.svc.example.com.", "nginx.mynamespace.svc.example.com."},
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{"prod", "nginx.mynamespace.staging.svc.example.com.", ""},
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{"prod", "nginx.mynamespace.example.com.", ""},
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{"prod", "example.com.", ""},
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{"prod", "com.", ""},
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}
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fed := New()
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for i, tc := range tests {
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fed.f[tc.fed] = "test-name"
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if x, _ := fed.isNameFederation(tc.qname, "example.com."); x != tc.expectedZone {
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t.Errorf("Test %d, failed to get zone, expected %s, got %s", i, tc.expectedZone, x)
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}
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}
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}
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func TestFederationKubernetes(t *testing.T) {
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tests := []test.Case{
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{
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// service exists so we return the IP address associated with it.
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Qname: "svc1.testns.prod.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("svc1.testns.prod.svc.cluster.local. 303 IN A 10.0.0.1"),
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},
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},
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{
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// service does not exist, do the federation dance.
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Qname: "svc0.testns.prod.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.CNAME("svc0.testns.prod.svc.cluster.local. 303 IN CNAME svc0.testns.prod.svc.fd-az.fd-r.federal.example."),
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},
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},
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}
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k := kubernetes.New([]string{"cluster.local."})
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k.APIConn = &APIConnFederationTest{zone: "fd-az", region: "fd-r"}
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fed := New()
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fed.zones = []string{"cluster.local."}
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fed.Federations = k.Federations
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fed.Next = k
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fed.f = map[string]string{
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"prod": "federal.example.",
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}
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ctx := context.TODO()
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for i, tc := range tests {
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m := tc.Msg()
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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_, err := fed.ServeDNS(ctx, rec, m)
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if err != nil {
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t.Errorf("Test %d, expected no error, got %v\n", i, err)
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return
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}
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resp := rec.Msg
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test.SortAndCheck(t, resp, tc)
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}
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}
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func TestFederationKubernetesMissingLabels(t *testing.T) {
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tests := []test.Case{
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{
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// service does not exist, do the federation dance.
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Qname: "svc0.testns.prod.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.CNAME("svc0.testns.prod.svc.cluster.local. 303 IN CNAME svc0.testns.prod.svc.fd-az.fd-r.federal.example."),
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},
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},
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}
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k := kubernetes.New([]string{"cluster.local."})
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k.APIConn = &APIConnFederationTest{zone: "", region: ""}
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fed := New()
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fed.zones = []string{"cluster.local."}
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fed.Federations = k.Federations
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fed.Next = k
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fed.f = map[string]string{
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"prod": "federal.example.",
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}
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ctx := context.TODO()
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for _, tc := range tests {
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m := tc.Msg()
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rec := dnstest.NewRecorder(&test.ResponseWriter{})
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_, err := fed.ServeDNS(ctx, rec, m)
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if err == nil {
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t.Errorf("Expected an error")
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return
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}
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}
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}
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