-$v2w->done;
-
-my $msgs = $ibx->search->reopen->query("gmane:1234");
-is_deeply([map { $_->mid } @$msgs], ['a@example.com'], 'got one match');
-$msgs = $ibx->search->query("gmane:666");
-is_deeply([], $msgs, 'body did NOT match');
+};
+my $mm = PublicInbox::Msgmap->new_file("$ibx->{inboxdir}/$another", 1);
+ok(0 == $mm->mid_set(1234, 'a@example.com'), 'mid_set not idempotent');
+ok(0 == $mm->mid_set(1, 'a@example.com'), 'mid_set fails with dup MID');
+my $mset = $ibx->search->mset('gmane:1234');
+my $msgs = $ibx->search->mset_to_smsg($ibx, $mset);
+$msgs = [ map { $_->{mid} } @$msgs ];
+is_deeply($msgs, ['a@example.com'], 'got one match');
+$mset = $ibx->search->mset('gmane:666');
+is($mset->size, 0, 'body did NOT match');