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k8s middleware add tests and docs update (#501)

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* add cidrs opt

* remove state data from middleware object

* update k8s docs

* Add integration tests

* add unit tests for cidr and pods config

* more README fixes, separate dev notes

* adjust section headers

* fix typo
This commit is contained in:
Chris O'Haver 2017-02-02 16:51:42 -05:00 • committed by John Belamaric
parent 8beb1b2166
commit 77f957d443
5 changed files with 512 additions and 322 deletions
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86
test/kubernetes_test.go
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@ -255,6 +255,66 @@ var dnsTestCasesPodsVerified = []test.Case{
},
}
var dnsTestCasesCidrReverseZone = []test.Case{
{
Qname: "123.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{},
},
{
Qname: "100.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("100.0.0.10.in-addr.arpa. 303 IN PTR svc-1-a.test-1.svc.cluster.local."),
},
},
{
Qname: "110.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("115.0.0.10.in-addr.arpa. 303 IN PTR svc-1-b.test-1.svc.cluster.local."),
},
},
{
Qname: "115.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("115.0.0.10.in-addr.arpa. 303 IN PTR svc-c.test-1.svc.cluster.local."),
},
},
}
var dnsTestCasesPartialCidrReverseZone = []test.Case{
{
// In exposed range, record not present = OK + No data
Qname: "99.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{},
},
{
// In exposed range, record present = OK + Data
Qname: "100.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("100.0.0.10.in-addr.arpa. 303 IN PTR svc-1-a.test-1.svc.cluster.local."),
},
},
{
// In exposed range, record present = OK + Data
Qname: "110.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeSuccess,
Answer: []dns.RR{
test.PTR("115.0.0.10.in-addr.arpa. 303 IN PTR svc-1-b.test-1.svc.cluster.local."),
},
},
{
// Out of exposed range, record present = pass to next middleware (not existing in test) = FAIL
Qname: "115.0.0.10.in-addr.arpa.", Qtype: dns.TypePTR,
Rcode: dns.RcodeServerFailure,
Answer: []dns.RR{},
},
}
func createTestServer(t *testing.T, corefile string) (*caddy.Instance, string) {
server, err := CoreDNSServer(corefile)
if err != nil {
@ -275,7 +335,7 @@ func doIntegrationTests(t *testing.T, corefile string, testCases []test.Case) {
// Work-around for timing condition that results in no-data being returned in
// test environment.
time.Sleep(5 * time.Second)
time.Sleep(1 * time.Second)
for _, tc := range testCases {
@ -340,3 +400,27 @@ func TestKubernetesIntegrationPodsVerified(t *testing.T) {
`
doIntegrationTests(t, corefile, dnsTestCasesPodsVerified)
}
func TestKubernetesIntegrationCidrReverseZone(t *testing.T) {
corefile :=
`.:0 {
kubernetes cluster.local {
endpoint http://localhost:8080
namespaces test-1
cidrs 10.0.0.0/24
}
`
doIntegrationTests(t, corefile, dnsTestCasesCidrReverseZone)
}
func TestKubernetesIntegrationPartialCidrReverseZone(t *testing.T) {
corefile :=
`.:0 {
kubernetes cluster.local {
endpoint http://localhost:8080
namespaces test-1
cidrs 10.0.0.96/28 10.0.0.120/32
}
`
doIntegrationTests(t, corefile, dnsTestCasesPartialCidrReverseZone)
}