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package test
import (
"testing"
"github.com/coredns/coredns/plugin/test"
"github.com/miekg/dns"
)
const loopDB = `example.com. 500 IN SOA ns1.outside.com. root.example.com. 3 604800 86400 2419200 604800
example.com. 500 IN NS ns1.outside.com.
a.example.com. 500 IN CNAME b.example.com.
*.foo.example.com. 500 IN CNAME bar.foo.example.com.`
func TestFileLoop(t *testing.T) {
name, rm, err := test.TempFile(".", loopDB)
if err != nil {
t.Fatalf("Failed to create zone: %s", err)
}
defer rm()
// Corefile with for example without proxy section.
corefile := `example.com:0 {
file ` + name + `
}`
i, udp, _, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer i.Stop()
m := new(dns.Msg)
m.SetQuestion("something.foo.example.com.", dns.TypeA)
r, err := dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not exchange msg: %s", err)
}
// This should not loop, don't really care about the correctness of the answer.
// Currently we return servfail in the file lookup.go file.
// For now: document current behavior in this test.
if r.Rcode != dns.RcodeServerFailure {
t.Errorf("Rcode should be dns.RcodeServerFailure: %d", r.Rcode)
}
}
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