1package message

2

3import (

4 "errors"

5 "testing"

6)

7

8func TestMessageIDCanonical(t *testing.T) {

9 check := func(s string, expID string, expRaw bool, expErr error) {

10 t.Helper()

11

12 id, raw, err := MessageIDCanonical(s)

13 if id != expID || raw != expRaw || (expErr == nil) != (err == nil) || err != nil && !errors.Is(err, expErr) {

14 t.Fatalf("got message-id %q, raw %v, err %v, expected %q %v %v, for message-id %q", id, raw, err, expID, expRaw, expErr, s)

15 }

16 }

17

18 check("bogus", "", false, errBadMessageID)

19 check("<bogus@host", "", false, errBadMessageID)

20 check("bogus@host>", "", false, errBadMessageID)

21 check("<>", "", false, errBadMessageID)

22 check("<user@domain>", "user@domain", false, nil)

23 check("<USER@DOMAIN>", "user@domain", false, nil)

24 check("<user@[10.0.0.1]>", "user@[10.0.0.1]", true, nil)

25 check("<user@domain> (added by postmaster@isp.example)", "user@domain", false, nil)

26 check("<user@domain> other", "user@domain", false, nil)

27 check("<User@Domain@Time>", "user@domain@time", true, nil)

28 check("<User>", "user", true, nil)

29}

30