v2writable: support "barrier" operation to avoid reforking

Stopping and starting a bunch of processes to look up duplicates
or removals is inefficient.  Take advantage of checkpointing
in "git fast-import" and transactions in Xapian and SQLite.

1 files changed, 2 insertions, 1 deletions

diff --git a/t/v2writable.t b/t/v2writable.t
index 404c8651..7d276da7 100644
--- a/t/v2writable.t
+++ b/t/v2writable.t
@@ -55,7 +55,7 @@ if ('ensure git configs are correct') {
 {
         my @warn;
         local $SIG{__WARN__} = sub { push @warn, @_ };
-        is(undef, $im->add($mime), 'obvious duplicate rejected');
+        is($im->add($mime), undef, 'obvious duplicate rejected');
         like(join(' ', @warn), qr/resent/, 'warned about resent message');
 
         @warn = ();
@@ -105,6 +105,7 @@ if ('ensure git configs are correct') {
         ok($im->add($mime), 'message with multiple Message-ID');
         $im->done;
         my @found;
+        $ibx->search->reopen;
         $ibx->search->each_smsg_by_mid('abcde@1', sub { push @found, @_; 1 });
         is(scalar(@found), 1, 'message found by first MID');
         $ibx->search->each_smsg_by_mid('abcde@2', sub { push @found, @_; 1 });