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package test
import (
"testing"
"github.com/coredns/coredns/plugin/test"
"github.com/miekg/dns"
)
func TestFileUpstream(t *testing.T) {
name, rm, err := test.TempFile(".", `$ORIGIN example.org.
@ 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. (
2017042745 ; serial
7200 ; refresh (2 hours)
3600 ; retry (1 hour)
1209600 ; expire (2 weeks)
3600 ; minimum (1 hour)
)
3600 IN NS a.iana-servers.net.
3600 IN NS b.iana-servers.net.
www 3600 IN CNAME www.example.net.
`)
if err != nil {
t.Fatalf("Failed to create zone: %s", err)
}
defer rm()
corefile := `.:0 {
file ` + name + ` example.org {
upstream
}
hosts {
10.0.0.1 www.example.net.
fallthrough
}
}`
i, udp, _, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer i.Stop()
m := new(dns.Msg)
m.SetQuestion("www.example.org.", dns.TypeA)
m.SetEdns0(4096, true)
r, err := dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not exchange msg: %s", err)
}
if r.Rcode == dns.RcodeServerFailure {
t.Fatalf("Rcode should not be dns.RcodeServerFailure")
}
if x := r.Answer[1].(*dns.A).A.String(); x != "10.0.0.1" {
t.Errorf("Failed to get address for CNAME, expected 10.0.0.1 got %s", x)
}
}
// TestFileUpstreamAdditional runs two CoreDNS servers that serve example.org and foo.example.org.
// example.org contains a cname to foo.example.org; this should be resolved via upstream.Self.
func TestFileUpstreamAdditional(t *testing.T) {
name, rm, err := test.TempFile(".", `$ORIGIN example.org.
@ 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. 2017042745 7200 3600 1209600 3600
3600 IN NS b.iana-servers.net.
www 3600 IN CNAME www.foo
`)
if err != nil {
t.Fatalf("Failed to create zone: %s", err)
}
defer rm()
name2, rm2, err2 := test.TempFile(".", `$ORIGIN foo.example.org.
@ 3600 IN SOA sns.dns.icann.org. noc.dns.icann.org. 2017042745 7200 3600 1209600 3600
3600 IN NS b.iana-servers.net.
www 3600 IN A 127.0.0.53
`)
if err2 != nil {
t.Fatalf("Failed to create zone: %s", err2)
}
defer rm2()
corefile := `.:0 {
file ` + name + ` example.org {
upstream
}
file ` + name2 + ` foo.example.org {
upstream
}
}`
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("www.example.org.", dns.TypeA)
r, err := dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not exchange msg: %s", err)
}
if r.Rcode == dns.RcodeServerFailure {
t.Fatalf("Rcode should not be dns.RcodeServerFailure")
}
if x := len(r.Answer); x != 2 {
t.Errorf("Expected 2 RR in reply, got %d", x)
}
if x := r.Answer[1].(*dns.A).A.String(); x != "127.0.0.53" {
t.Errorf("Failed to get address for CNAME, expected 127.0.0.53, got %s", x)
}
}
|
