index: allow search/lookups on X-Alt-Message-ID

Since we replace extra Message-ID headers with X-Alt-Message-ID
to placate NNTP clients, we should allow searching and indexing
on X-Alt-Message-ID just like we do with Message-ID.

1 files changed, 6 insertions, 1 deletions

diff --git a/t/mid.t b/t/mid.t
index 9ad10a99..98b0c200 100644
--- a/t/mid.t
+++ b/t/mid.t
@@ -1,7 +1,7 @@
 # Copyright (C) 2016-2019 all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 use Test::More;
-use PublicInbox::MID qw(mid_escape mids references);
+use PublicInbox::MID qw(mid_escape mids references mids_for_index);
 
 is(mid_escape('foo!@(bar)'), 'foo!@(bar)');
 is(mid_escape('foo%!@(bar)'), 'foo%25!@(bar)');
@@ -10,6 +10,7 @@ is(mid_escape('foo%!@(bar)'), 'foo%25!@(bar)');
 {
         use Email::MIME;
         my $mime = Email::MIME->create;
+        $mime->header_set('X-Alt-Message-ID', '<alt-id-for-nntp>');
         $mime->header_set('Message-Id', '<mid-1@a>');
         is_deeply(['mid-1@a'], mids($mime->header_obj), 'mids in common case');
         $mime->header_set('Message-Id', '<mid-1@a>', '<mid-2@b>');
@@ -40,6 +41,10 @@ is(mid_escape('foo%!@(bar)'), 'foo%25!@(bar)');
         $mime->header_set('To', 'u@example.com');
         $mime->header_set('References', '<hello> <world> <n> <u@example.com>');
         is_deeply(references($mime->header_obj), [qw(hello world)]);
+
+        is_deeply([qw(helloworld alt-id-for-nntp)],
+                mids_for_index($mime->header_obj),
+                'X-Alt-Message-ID can be indexed');
 }
 
 done_testing();