coredns/middleware/kubernetes/parse_test.go

package kubernetes

import (
	"testing"

	"github.com/coredns/coredns/request"

	"github.com/miekg/dns"
)

func TestParseRequest(t *testing.T) {
	k := New([]string{zone})

	tests := []struct {
		query    string
		qtype    uint16
		expected string // output from r.String()
	}{
		{
			// valid SRV request
			"_http._tcp.webs.mynamespace.svc.inter.webs.test.", dns.TypeSRV,
			"http.tcp..webs.mynamespace.svc",
		},
		{
			// wildcard acceptance
			"*.any.*.any.svc.inter.webs.test.", dns.TypeSRV,
			"*.*.any.*.any.svc",
		},
		{
			// A request of endpoint
			"1-2-3-4.webs.mynamespace.svc.inter.webs.test.", dns.TypeA,
			"*.*.1-2-3-4.webs.mynamespace.svc",
		},
	}
	for i, tc := range tests {
		m := new(dns.Msg)
		m.SetQuestion(tc.query, tc.qtype)
		state := request.Request{Zone: zone, Req: m}

		r, e := k.parseRequest(state)
		if e != nil {
			t.Errorf("Test %d, expected no error, got '%v'.", i, e)
		}
		rs := r.String()
		if rs != tc.expected {
			t.Errorf("Test %d, expected (stringyfied) recordRequest: %s, got %s", i, tc.expected, rs)
		}
	}
}

func TestParseInvalidRequest(t *testing.T) {
	k := New([]string{zone})

	invalid := []string{
		"webs.mynamespace.pood.inter.webs.test.",                // Request must be for pod or svc subdomain.
		"too.long.for.what.I.am.trying.to.do.inter.webs.tests.", // Too long.
	}

	for i, query := range invalid {
		m := new(dns.Msg)
		m.SetQuestion(query, dns.TypeA)
		state := request.Request{Zone: zone, Req: m}

		if _, e := k.parseRequest(state); e == nil {
			t.Errorf("Test %d: expected error from %s, got none", i, query)
		}
	}
}

const zone = "intern.webs.tests."