package dns

// Tests that solve that an specific issue.

import (
	"strings"
	"testing"
)

func TestTCPRtt(t *testing.T) {
	m := new(Msg)
	m.RecursionDesired = true
	m.SetQuestion("example.org.", TypeA)

	c := &Client{}
	for _, proto := range []string{"udp", "tcp"} {
		c.Net = proto
		_, rtt, err := c.Exchange(m, "8.8.4.4:53")
		if err != nil {
			t.Fatal(err)
		}
		if rtt == 0 {
			t.Fatalf("expecting non zero rtt %s, got zero", c.Net)
		}
	}
}

func TestNSEC3MissingSalt(t *testing.T) {
	rr, err := NewRR("ji6neoaepv8b5o6k4ev33abha8ht9fgc.example. NSEC3 1 1 12 aabbccdd K8UDEMVP1J2F7EG6JEBPS17VP3N8I58H")
	if err != nil {
		t.Fatalf("failed to parse example rr: %s", err)
	}
	m := new(Msg)
	m.Answer = []RR{rr}
	mb, err := m.Pack()
	if err != nil {
		t.Fatalf("expected to pack message. err: %s", err)
	}
	if err := m.Unpack(mb); err != nil {
		t.Fatalf("expected to unpack message. missing salt? err: %s", err)
	}
	in := rr.(*NSEC3).Salt
	out := m.Answer[0].(*NSEC3).Salt
	if in != out {
		t.Fatalf("expected salts to match. packed: `%s`. returned: `%s`", in, out)
	}
}

func TestNSEC3MixedNextDomain(t *testing.T) {
	rr, err := NewRR("ji6neoaepv8b5o6k4ev33abha8ht9fgc.example. NSEC3 1 1 12 - k8udemvp1j2f7eg6jebps17vp3n8i58h")
	if err != nil {
		t.Fatalf("failed to parse example rr: %s", err)
	}
	m := new(Msg)
	m.Answer = []RR{rr}
	mb, err := m.Pack()
	if err != nil {
		t.Fatalf("expected to pack message. err: %s", err)
	}
	if err := m.Unpack(mb); err != nil {
		t.Fatalf("expected to unpack message. err: %s", err)
	}
	in := strings.ToUpper(rr.(*NSEC3).NextDomain)
	out := m.Answer[0].(*NSEC3).NextDomain
	if in != out {
		t.Fatalf("expected round trip to produce NextDomain `%s`, instead `%s`", in, out)
	}
}