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d1f17fa7e0
Move all (almost all) Go files in middleware into their own packages. This makes for better naming and discoverability. Lot of changes elsewhere to make this change. The middleware.State was renamed to request.Request which is better, but still does not cover all use-cases. It was also moved out middleware because it is used by `dnsserver` as well. A pkg/dnsutil packages was added for shared, handy, dns util functions. All normalize functions are now put in normalize.go
107 lines
3.1 KiB
Go
107 lines
3.1 KiB
Go
package loadbalance
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import (
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"testing"
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"github.com/miekg/coredns/middleware"
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"github.com/miekg/coredns/middleware/pkg/dnsrecorder"
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"github.com/miekg/coredns/middleware/test"
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"github.com/miekg/dns"
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"golang.org/x/net/context"
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)
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func TestLoadBalance(t *testing.T) {
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rm := RoundRobin{Next: handler()}
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// the first X records must be cnames after this test
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tests := []struct {
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answer []dns.RR
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extra []dns.RR
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cnameAnswer int
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cnameExtra int
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}{
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{
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answer: []dns.RR{
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newCNAME("cname1.region2.skydns.test. 300 IN CNAME cname2.region2.skydns.test."),
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newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
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newCNAME("cname5.region2.skydns.test. 300 IN CNAME cname6.region2.skydns.test."),
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newCNAME("cname6.region2.skydns.test. 300 IN CNAME endpoint.region2.skydns.test."),
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
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},
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cnameAnswer: 4,
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},
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{
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answer: []dns.RR{
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
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newCNAME("cname.region2.skydns.test. 300 IN CNAME endpoint.region2.skydns.test."),
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},
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cnameAnswer: 1,
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},
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{
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answer: []dns.RR{
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.2"),
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newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.3"),
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},
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extra: []dns.RR{
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.1"),
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newAAAA("endpoint.region2.skydns.test. 300 IN AAAA ::1"),
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newCNAME("cname2.region2.skydns.test. 300 IN CNAME cname3.region2.skydns.test."),
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newA("endpoint.region2.skydns.test. 300 IN A 10.240.0.3"),
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newAAAA("endpoint.region2.skydns.test. 300 IN AAAA ::2"),
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},
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cnameAnswer: 1,
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cnameExtra: 1,
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},
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}
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rec := dnsrecorder.New(&test.ResponseWriter{})
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for i, test := range tests {
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req := new(dns.Msg)
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req.SetQuestion("region2.skydns.test.", dns.TypeSRV)
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req.Answer = test.answer
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req.Extra = test.extra
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_, err := rm.ServeDNS(context.TODO(), rec, req)
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if err != nil {
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t.Errorf("Test %d: Expected no error, but got %s", i, err)
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continue
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}
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cname := 0
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for _, r := range rec.Msg.Answer {
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if r.Header().Rrtype != dns.TypeCNAME {
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break
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}
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cname++
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}
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if cname != test.cnameAnswer {
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t.Errorf("Test %d: Expected %d cnames in Answer, but got %d", i, test.cnameAnswer, cname)
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}
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cname = 0
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for _, r := range rec.Msg.Extra {
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if r.Header().Rrtype != dns.TypeCNAME {
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break
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}
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cname++
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}
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if cname != test.cnameExtra {
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t.Errorf("Test %d: Expected %d cname in Extra, but got %d", i, test.cnameExtra, cname)
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}
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}
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}
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func handler() middleware.Handler {
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return middleware.HandlerFunc(func(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
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w.WriteMsg(r)
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return dns.RcodeSuccess, nil
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})
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}
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func newA(rr string) *dns.A { r, _ := dns.NewRR(rr); return r.(*dns.A) }
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func newAAAA(rr string) *dns.AAAA { r, _ := dns.NewRR(rr); return r.(*dns.AAAA) }
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func newCNAME(rr string) *dns.CNAME { r, _ := dns.NewRR(rr); return r.(*dns.CNAME) }
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