mox!

iprev/iprev_test.go

@@ -0,0 +1,68 @@
+package iprev
+
+import (
+	"context"
+	"errors"
+	"net"
+	"strings"
+	"testing"
+
+	"github.com/mjl-/mox/dns"
+)
+
+func TestIPRev(t *testing.T) {
+	resolver := dns.MockResolver{
+		PTR: map[string][]string{
+			"10.0.0.1":    {"basic.example."},
+			"10.0.0.4":    {"absent.example.", "b.example."},
+			"10.0.0.5":    {"other.example.", "c.example."},
+			"10.0.0.6":    {"temperror.example.", "d.example."},
+			"10.0.0.7":    {"temperror.example.", "temperror2.example."},
+			"10.0.0.8":    {"other.example."},
+			"2001:db8::1": {"basic6.example."},
+		},
+		A: map[string][]string{
+			"basic.example.":      {"10.0.0.1"},
+			"b.example.":          {"10.0.0.4"},
+			"c.example.":          {"10.0.0.5"},
+			"d.example.":          {"10.0.0.6"},
+			"other.example.":      {"10.9.9.9"},
+			"temperror.example.":  {"10.0.0.99"},
+			"temperror2.example.": {"10.0.0.99"},
+		},
+		AAAA: map[string][]string{
+			"basic6.example.": {"2001:db8::1"},
+		},
+		Fail: map[dns.Mockreq]struct{}{
+			{Type: "ptr", Name: "10.0.0.3"}:           {},
+			{Type: "ptr", Name: "2001:db8::3"}:        {},
+			{Type: "ip", Name: "temperror.example."}:  {},
+			{Type: "ip", Name: "temperror2.example."}: {},
+		},
+	}
+
+	test := func(ip string, expStatus Status, expName string, expNames string, expErr error) {
+		t.Helper()
+
+		status, name, names, err := Lookup(context.Background(), resolver, net.ParseIP(ip))
+		if (err == nil) != (expErr == nil) || err != nil && !errors.Is(err, expErr) {
+			t.Fatalf("got err %v, expected err %v", err, expErr)
+		} else if err != nil {
+			return
+		} else if status != expStatus || name != expName || strings.Join(names, ",") != expNames {
+			t.Fatalf("got status %q, name %q, expNames %v, expected %q %q %v", status, name, names, expStatus, expName, expNames)
+		}
+	}
+
+	test("10.0.0.1", StatusPass, "basic.example.", "basic.example.", nil)
+	test("10.0.0.2", StatusPermerror, "", "", ErrNoRecord)
+	test("10.0.0.3", StatusTemperror, "", "", ErrDNS)
+	test("10.0.0.4", StatusPass, "b.example.", "absent.example.,b.example.", nil)
+	test("10.0.0.5", StatusPass, "c.example.", "other.example.,c.example.", nil)
+	test("10.0.0.6", StatusPass, "d.example.", "temperror.example.,d.example.", nil)
+	test("10.0.0.7", StatusTemperror, "", "temperror.example.,temperror2.example.", ErrDNS)
+	test("10.0.0.8", StatusFail, "", "other.example.", nil)
+	test("2001:db8::1", StatusPass, "basic6.example.", "basic6.example.", nil)
+	test("2001:db8::2", StatusPermerror, "", "", ErrNoRecord)
+	test("2001:db8::3", StatusTemperror, "", "", ErrDNS)
+}