Implement AXFR over TCP and RFC 2136 UPDATE with caller TSIG.

Callers get a session API, typed RR builders, and BIND testcontainer proof so CheckDNS can stay off the DNS wire.

Co-authored-by: Cursor <cursoragent@cursor.com>

record_test.go

@@ -0,0 +1,177 @@
+package godns_test
+
+import (
+	"net"
+	"strings"
+	"testing"
+
+	godns "gitea.neitzel.de/konrad/go-dns"
+)
+
+func TestABuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.A("www.example.test", 300, net.ParseIP("192.0.2.10"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Owner != "www.example.test." {
+		t.Fatalf("owner: %q", rec.Owner)
+	}
+	if rec.Type != "A" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.TTL != 300 {
+		t.Fatalf("ttl: %d", rec.TTL)
+	}
+	if rec.RData != "192.0.2.10" {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+	if rec.Class != "IN" {
+		t.Fatalf("class: %q", rec.Class)
+	}
+}
+
+func TestAAAABuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.AAAA("www.example.test", 300, net.ParseIP("2001:db8::10"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "AAAA" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "2001:db8::10" {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestMXBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.MX("example.test", 3600, 10, "mail.example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "MX" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "10 mail.example.test." {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestTXTBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.TXT("example.test", 3600, "v=spf1 -all")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "TXT" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != `"v=spf1 -all"` {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestCNAMEBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.CNAME("www.example.test", 3600, "example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "CNAME" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "example.test." {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestNSBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.NS("example.test", 3600, "ns.example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "NS" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "ns.example.test." {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestSRVBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.SRV("_sip._tcp.example.test", 3600, 10, 20, 5060, "sip.example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "SRV" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "10 20 5060 sip.example.test." {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestPTRBuilder(t *testing.T) {
+	t.Parallel()
+
+	rec, err := godns.PTR("1.2.0.192.in-addr.arpa", 3600, "www.example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if rec.Type != "PTR" {
+		t.Fatalf("type: %q", rec.Type)
+	}
+	if rec.RData != "www.example.test." {
+		t.Fatalf("rdata: %q", rec.RData)
+	}
+}
+
+func TestBuilderRejectsNonASCIIOwner(t *testing.T) {
+	t.Parallel()
+
+	_, err := godns.A("wüw.example.test", 300, net.ParseIP("192.0.2.10"))
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "ascii") {
+		t.Fatalf("error should mention ASCII, got %v", err)
+	}
+}
+
+func TestZoneGroupsRRSets(t *testing.T) {
+	t.Parallel()
+
+	a1, err := godns.A("www.example.test", 300, net.ParseIP("192.0.2.10"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	a2, err := godns.A("www.example.test", 300, net.ParseIP("192.0.2.11"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	mx, err := godns.MX("example.test", 3600, 10, "mail.example.test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	zone := godns.Zone{
+		Origin:  "example.test.",
+		Serial:  1,
+		Records: []godns.Record{a1, a2, mx},
+	}
+	sets := zone.RRSets()
+	if len(sets) != 2 {
+		t.Fatalf("expected 2 RRsets, got %d", len(sets))
+	}
+}