package test

import (
	"testing"

	"github.com/miekg/dns"
)

func TestZoneEDNS0Lookup(t *testing.T) {
	t.Parallel()

	name, rm, err := 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     IN A 127.0.0.1
www     IN AAAA ::1
`)
	if err != nil {
		t.Fatalf("Failed to create zone: %s", err)
	}
	defer rm()

	// Corefile with for example without proxy section.
	corefile := `example.org: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("example.org.", dns.TypeMX)
	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")
	}
}

func TestZoneNoNS(t *testing.T) {
	t.Parallel()

	name, rm, err := 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)
	)

www     IN A 127.0.0.1
www     IN AAAA ::1
`)
	if err != nil {
		t.Fatalf("Failed to create zone: %s", err)
	}
	defer rm()

	// Corefile with for example without proxy section.
	corefile := `example.org: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("example.org.", dns.TypeMX)
	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")
	}
}
