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Middleware/k8s: Add unit tests for Pods (#815)

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* Added Pod testing

* Cleanup

* fixed formatting
This commit is contained in:
Sandeep Rajan
2017-08-03 15:16:50 -04:00
committed by Yong Tang
parent cd1f2f1bbf
commit 8ad8c75ab4
2 changed files with 77 additions and 2 deletions
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78
middleware/kubernetes/handler_test.go
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@@ -106,6 +106,68 @@ var dnsTestCases = map[string](*test.Case){
},
}
var podModeDisabledCases = map[string](*test.Case){
"A Record Pod mode = Case 1": {
Qname: "10-240-0-1.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Error: errPodsDisabled,
Answer: []dns.RR{},
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
"A Record Pod mode = Case 2": {
Qname: "172-0-0-2.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Error: errPodsDisabled,
Answer: []dns.RR{},
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
}
var podModeInsecureCases = map[string](*test.Case){
"A Record Pod mode = Case 1": {
Qname: "10-240-0-1.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("10-240-0-1.podns.pod.cluster.local. 0 IN A 10.240.0.1"),
},
},
"A Record Pod mode = Case 2": {
Qname: "172-0-0-2.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("172-0-0-2.podns.pod.cluster.local. 0 IN A 172.0.0.2"),
},
},
}
var podModeVerifiedCases = map[string](*test.Case){
"A Record Pod mode = Case 1": {
Qname: "10-240-0-1.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.A("10-240-0-1.podns.pod.cluster.local. 0 IN A 10.240.0.1"),
},
},
"A Record Pod mode = Case 2": {
Qname: "172-0-0-2.podns.pod.cluster.local.", Qtype: dns.TypeA,
Rcode: dns.RcodeNameError,
Answer: []dns.RR{},
Ns: []dns.RR{
test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
},
},
}
var autopathCases = map[string](*test.Case){
"A Autopath Service (Second Search)": {
Qname: "svc1.testns.podns.svc.cluster.local.", Qtype: dns.TypeA,
@@ -215,11 +277,20 @@ func TestServeDNS(t *testing.T) {
runServeDNSTests(t, autopathCases, k, ctx)
runServeDNSTests(t, autopathBareSearch, k, ctx)
//Set PodMode to Disabled
k.PodMode = PodModeDisabled
runServeDNSTests(t, podModeDisabledCases, k, ctx)
//Set PodMode to Insecure
k.PodMode = PodModeInsecure
runServeDNSTests(t, podModeInsecureCases, k, ctx)
//Set PodMode to Verified
k.PodMode = PodModeVerified
runServeDNSTests(t, podModeVerifiedCases, k, ctx)
// Set ndots to 2 for the ndots test cases
k.AutoPath.NDots = 2
runServeDNSTests(t, autopath2NDotsCases, k, ctx)
k.AutoPath.NDots = defautNdots
// Disable the NXDOMAIN override (enabled by default)
k.OnNXDOMAIN = dns.RcodeNameError
runServeDNSTests(t, autopathCases, k, ctx)
@@ -235,10 +306,13 @@ func runServeDNSTests(t *testing.T, dnsTestCases map[string](*test.Case), k Kube
w := dnsrecorder.New(&test.ResponseWriter{})
_, err := k.ServeDNS(ctx, w, r)
if err != nil {
if err != tc.Error {
t.Errorf("%v expected no error, got %v\n", testname, err)
return
}
if tc.Error != nil {
continue
}
resp := w.Msg

1
middleware/test/helpers.go
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@@ -35,6 +35,7 @@ type Case struct {
Answer []dns.RR
Ns []dns.RR
Extra []dns.RR
Error error
}
// Msg returns a *dns.Msg embedded in c.