searchidx: introduce "xref3" concept

This will be used to track cross-posted messages in the
external/detached index.

1 files changed, 24 insertions, 4 deletions

diff --git a/t/search.t b/t/search.t
index a66aec36..e789b81e 100644
--- a/t/search.t
+++ b/t/search.t
@@ -341,6 +341,14 @@ $ibx->with_umask(sub {
                 my $uid = PublicInbox::SearchIdx::get_val($doc, $col);
                 is($uid, $smsg->{num}, 'UID column matches {num}');
                 is($uid, $m->get_docid, 'UID column matches docid');
+
+                # check ->xref3 for external index:
+                is_deeply($smsg->xref3($doc), [], 'xref3 empty by default');
+                my $exp = "inbox.com.example:$uid:deadbeef";
+                $doc->add_boolean_term('P'.$exp);
+                is_deeply($smsg->xref3($doc), [ $exp ], 'xref3 can be set');
+                $doc->remove_term('P'.$exp);
+                is_deeply($smsg->xref3($doc), [], 'xref3 can be unset');
         }
 
         $mset = $ibx->search->mset('tc:list@example.com');
@@ -513,8 +521,13 @@ $ibx->with_umask(sub {
         $rw_commit->();
         my $doc_id = $rw->add_message(eml_load('t/data/message_embed.eml'));
         ok($doc_id > 0, 'messages within messages');
-        $rw->commit_txn_lazy;
-        $ibx->search->reopen;
+
+        my $eml = PublicInbox::Eml->new(<<EOF);
+List-Id: <blahblah.example.com>
+
+EOF
+        $rw->add_xref3($doc_id, 1, 'deadbeef', 'newsgroup1.example', $eml);
+        $rw_commit->();
         my $n_test_eml = $query->('n:test.eml');
         is(scalar(@$n_test_eml), 1, 'got a result');
         my $n_embed2x_eml = $query->('n:embed2x.eml');
@@ -532,8 +545,15 @@ $ibx->with_umask(sub {
         is($query->('s:"mail header experiments"')->[0]->{mid},
                 '20200418222508.GA13918@dcvr',
                 'Subject search reaches inside message/rfc822');
+        is($query->('l:blahblah.example.com')->[0]->{num}, $doc_id,
+                'xref3 List-Id probabilistic works');
+        is($query->('lid:blahblah.example.com')->[0]->{num}, $doc_id,
+                'xref3 List-Id boolean term works');
+        $rw->remove_xref3($doc_id, 'deadbeef', 'newsgroup1.example', $eml);
+        $rw->commit_txn_lazy;
+        $ibx->search->reopen;
+        my $res = $query->('lid:blahblah.example.com');
+        is_deeply($res, [], '->remove_xref3 dropped boolean term');
 });
 
 done_testing();
-
-1;