search: index byte size of a message for IMAP search

Searching for messages smaller than a certain size is allowed by
offlineimap(1), mbsync(1), and possibly other tools.  Maybe
public-inbox-watch will support it, too.

I don't see a reason to expose searching by size via WWW search
right now (but maybe in the future, I could be convinced to).

Note: we only store the byte-size of the message in git,
this is typically LF-only and we won't have the correct
size after CRLF conversion for NNTP or IMAP.

1 files changed, 6 insertions, 0 deletions

diff --git a/t/search.t b/t/search.t
index 6cf2bc2d..cf325416 100644
--- a/t/search.t
+++ b/t/search.t
@@ -318,6 +318,12 @@ $ibx->with_umask(sub {
         foreach my $m ($mset->items) {
                 my $smsg = $ro->{over_ro}->get_art($m->get_docid);
                 like($smsg->{to}, qr/\blist\@example\.com\b/, 'to appears');
+                my $doc = $m->get_document;
+                my $col = PublicInbox::Search::BYTES();
+                my $bytes = PublicInbox::Smsg::get_val($doc, $col);
+                like($bytes, qr/\A[0-9]+\z/, '$bytes stored as digit');
+                ok($bytes > 0, '$bytes is > 0');
+                is($bytes, $smsg->{bytes}, 'bytes Xapian value matches Over');
         }
 
         $mset = $ro->query('tc:list@example.com', {mset => 1});