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-rw-r--r--t/extsearch.t587
1 files changed, 587 insertions, 0 deletions
diff --git a/t/extsearch.t b/t/extsearch.t
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+#!perl -w
+# Copyright (C) all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+use v5.12;
+use PublicInbox::TestCommon;
+use PublicInbox::Config;
+use PublicInbox::InboxWritable;
+require_git(2.6);
+require_mods(qw(json DBD::SQLite Xapian));
+use autodie qw(open rename truncate unlink);
+require PublicInbox::Search;
+use_ok 'PublicInbox::ExtSearch';
+use_ok 'PublicInbox::ExtSearchIdx';
+use_ok 'PublicInbox::OverIdx';
+my ($home, $for_destroy) = tmpdir();
+local $ENV{HOME} = $home;
+mkdir "$home/.public-inbox" or BAIL_OUT $!;
+my $cfg_path = "$home/.public-inbox/config";
+PublicInbox::IO::write_file '>', $cfg_path, <<EOF;
+[publicinboxMda]
+        spamcheck = none
+EOF
+my $v2addr = 'v2test@example.com';
+my $v1addr = 'v1test@example.com';
+ok(run_script([qw(-init -Lbasic -V2 v2test --newsgroup v2.example),
+        "$home/v2test", 'http://example.com/v2test', $v2addr ]), 'v2test init');
+my $env = { ORIGINAL_RECIPIENT => $v2addr };
+my $eml = eml_load('t/utf8.eml');
+
+$eml->header_set('List-Id', '<v2.example.com>');
+
+my $in = \($eml->as_string);
+run_script(['-mda', '--no-precheck'], $env, { 0 => $in }) or BAIL_OUT '-mda';
+
+ok(run_script([qw(-init -V1 v1test --newsgroup v1.example), "$home/v1test",
+        'http://example.com/v1test', $v1addr ]), 'v1test init');
+
+$eml->header_set('List-Id', '<v1.example.com>');
+$in = \$eml->as_string;
+
+$env = { ORIGINAL_RECIPIENT => $v1addr };
+run_script(['-mda', '--no-precheck'], $env, { 0 => $in }) or BAIL_OUT '-mda';
+
+run_script([qw(-index -Lbasic), "$home/v1test"]) or BAIL_OUT "index $?";
+
+ok(run_script([qw(-extindex --dangerous --all), "$home/extindex"]),
+        'extindex init');
+{
+        my $es = PublicInbox::ExtSearch->new("$home/extindex");
+        ok($es->has_threadid, '->has_threadid');
+}
+
+if ('with boost') {
+        xsys([qw(git config publicinbox.v1test.boost), 10],
+                { GIT_CONFIG => $cfg_path });
+        ok(run_script([qw(-extindex --all), "$home/extindex-b"]),
+                'extindex init with boost');
+        my $es = PublicInbox::ExtSearch->new("$home/extindex-b");
+        my $smsg = $es->over->get_art(1);
+        ok($smsg, 'got first article');
+        my $xref3 = $es->over->get_xref3($smsg->{num});
+        my @v1 = grep(/\Av1/, @$xref3);
+        my @v2 = grep(/\Av2/, @$xref3);
+        like($v1[0], qr/\Av1\.example.*?\b\Q$smsg->{blob}\E\b/,
+                'smsg->{blob} respected boost');
+        is(scalar(@$xref3), 2, 'only to entries');
+        undef $es;
+
+        xsys([qw(git config publicinbox.v2test.boost), 20],
+                { GIT_CONFIG => $cfg_path });
+        ok(run_script([qw(-extindex --all --reindex), "$home/extindex-b"]),
+                'extindex --reindex with altered boost');
+
+        $es = PublicInbox::ExtSearch->new("$home/extindex-b");
+        $smsg = $es->over->get_art(1);
+        like($v2[0], qr/\Av2\.example.*?\b\Q$smsg->{blob}\E\b/,
+                        'smsg->{blob} respects boost after reindex');
+
+        # high boost added later
+        my $b2 = "$home/extindex-bb";
+        ok(run_script([qw(-extindex), $b2, "$home/v1test"]),
+                'extindex with low boost inbox only');
+        ok(run_script([qw(-extindex), $b2, "$home/v2test"]),
+                'extindex with high boost inbox only');
+        $es = PublicInbox::ExtSearch->new($b2);
+        $smsg = $es->over->get_art(1);
+        $xref3 = $es->over->get_xref3($smsg->{num});
+        like($v2[0], qr/\Av2\.example.*?\b\Q$smsg->{blob}\E\b/,
+                'smsg->{blob} respected boost across 2 index runs');
+
+        xsys([qw(git config --unset publicinbox.v1test.boost)],
+                { GIT_CONFIG => $cfg_path });
+        xsys([qw(git config --unset publicinbox.v2test.boost)],
+                { GIT_CONFIG => $cfg_path });
+}
+
+{ # TODO: -extindex should write this to config
+        PublicInbox::IO::write_file '>>', $cfg_path, <<EOF;
+; for ->ALL
+[extindex "all"]
+        topdir = $home/extindex
+EOF
+        my $pi_cfg = PublicInbox::Config->new;
+        $pi_cfg->fill_all;
+        ok($pi_cfg->ALL, '->ALL');
+        my $ibx = $pi_cfg->{-by_newsgroup}->{'v2.example'};
+        my $ret = $pi_cfg->ALL->nntp_xref_for($ibx, $ibx->over->get_art(1));
+        is_deeply($ret, { 'v1.example' => 1, 'v2.example' => 1 },
+                '->nntp_xref_for');
+}
+
+SKIP: {
+        require_mods(qw(Net::NNTP), 1);
+        my $sock = tcp_server();
+        my $host_port = tcp_host_port($sock);
+        my ($out, $err) = ("$home/nntpd.out.log", "$home/nntpd.err.log");
+        my $cmd = [ '-nntpd', '-W0', "--stdout=$out", "--stderr=$err" ];
+        my $td = start_script($cmd, undef, { 3 => $sock });
+        my $n = Net::NNTP->new($host_port);
+        my @xp = $n->xpath('<testmessage@example.com>');
+        is_deeply(\@xp, [ qw(v1.example/1 v2.example/1) ]);
+        $n->group('v1.example');
+        my $res = $n->head(1);
+        @$res = grep(/^Xref: /, @$res);
+        like($res->[0], qr/ v1\.example:1 v2\.example:1/, 'nntp_xref works');
+}
+
+my $es = PublicInbox::ExtSearch->new("$home/extindex");
+{
+        my $smsg = $es->over->get_art(1);
+        ok($smsg, 'got first article');
+        is($es->over->get_art(2), undef, 'only one added');
+        my $xref3 = $es->over->get_xref3(1);
+        like($xref3->[0], qr/\A\Qv2.example\E:1:/, 'order preserved 1');
+        like($xref3->[1], qr/\A\Qv1.example\E:1:/, 'order preserved 2');
+        is(scalar(@$xref3), 2, 'only to entries');
+}
+
+if ('inbox edited') {
+        my ($in, $out, $err);
+        $in = $out = $err = '';
+        my $opt = { 0 => \$in, 1 => \$out, 2 => \$err };
+        my $env = { MAIL_EDITOR => "$^X -w -i -p -e 's/test message/BEST MSG/'" };
+        my $cmd = [ qw(-edit -Ft/utf8.eml), "$home/v2test" ];
+        ok(run_script($cmd, $env, $opt), '-edit');
+        ok(run_script([qw(-extindex --all), "$home/extindex"], undef, $opt),
+                'extindex again');
+        like($err, qr/discontiguous range/, 'warned about discontiguous range');
+        my $msg1 = $es->over->get_art(1) or BAIL_OUT 'msg1 missing';
+        my $msg2 = $es->over->get_art(2) or BAIL_OUT 'msg2 missing';
+        is($msg1->{mid}, $msg2->{mid}, 'edited message indexed');
+        isnt($msg1->{blob}, $msg2->{blob}, 'blobs differ');
+        my $eml2 = $es->smsg_eml($msg2);
+        like($eml2->body, qr/BEST MSG/, 'edited body in #2');
+        unlike($eml2->body, qr/test message/, 'old body discarded in #2');
+        my $eml1 = $es->smsg_eml($msg1);
+        like($eml1->body, qr/test message/, 'original body in #1');
+        my $x1 = $es->over->get_xref3(1);
+        my $x2 = $es->over->get_xref3(2);
+        is(scalar(@$x1), 1, 'original only has one xref3');
+        is(scalar(@$x2), 1, 'new message has one xref3');
+        isnt($x1->[0], $x2->[0], 'xref3 differs');
+
+        my $mset = $es->mset('b:"BEST MSG"');
+        is($mset->size, 1, 'new message found');
+        $mset = $es->mset('b:"test message"');
+        is($mset->size, 1, 'old message found');
+        delete @$es{qw(git over xdb qp)}; # fork preparation
+
+        my $pi_cfg = PublicInbox::Config->new;
+        $pi_cfg->fill_all;
+        is(scalar($pi_cfg->ALL->mset('s:Testing')->items), 2,
+                '2 results in ->ALL');
+        my $res = {};
+        my $nr = 0;
+        $pi_cfg->each_inbox(sub {
+                $nr++;
+                my ($ibx) = @_;
+                local $SIG{__WARN__} = sub {}; # FIXME support --reindex
+                my $mset = $ibx->isrch->mset('s:Testing');
+                $res->{$ibx->eidx_key} = $ibx->isrch->mset_to_smsg($ibx, $mset);
+        });
+        is($nr, 2, 'two inboxes');
+        my $exp = {};
+        for my $v (qw(v1 v2)) {
+                my $ibx = $pi_cfg->lookup_newsgroup("$v.example");
+                my $smsg = $ibx->over->get_art(1);
+                $smsg->psgi_cull;
+                $exp->{"$v.example"} = [ $smsg ];
+        }
+        is_deeply($res, $exp, 'isearch limited results');
+        $pi_cfg = $res = $exp = undef;
+
+        $opt->{0} = \($eml2->as_string);
+        ok(run_script([qw(-learn rm --all)], undef, $opt), '-learn rm');
+
+        ok(run_script([qw(-extindex --all), "$home/extindex"], undef, undef),
+                'extindex after rm');
+        is($es->over->get_art(2), undef, 'doc #2 gone');
+        $mset = $es->mset('b:"BEST MSG"');
+        is($mset->size, 0, 'new message gone');
+}
+
+my $misc = $es->misc;
+my @it = $misc->mset('')->items;
+is(scalar(@it), 2, 'two inboxes');
+like($it[0]->get_document->get_data, qr/v2test/, 'docdata matched v2');
+like($it[1]->get_document->get_data, qr/v1test/, 'docdata matched v1');
+
+my $cfg = PublicInbox::Config->new;
+my $schema_version = PublicInbox::Search::SCHEMA_VERSION();
+my $f = "$home/extindex/ei$schema_version/over.sqlite3";
+my $oidx = PublicInbox::OverIdx->new($f);
+if ('inject w/o indexing') {
+        use PublicInbox::Import;
+        my $v1ibx = $cfg->lookup_name('v1test');
+        my $last_v1_commit = $v1ibx->mm->last_commit;
+        my $v2ibx = $cfg->lookup_name('v2test');
+        my $last_v2_commit = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        my $git0 = PublicInbox::Git->new("$v2ibx->{inboxdir}/git/0.git");
+        chomp(my $cmt = $git0->qx(qw(rev-parse HEAD^0)));
+        is($last_v2_commit, $cmt, 'v2 index up-to-date');
+
+        my $v2im = PublicInbox::Import->new($git0, undef, undef, $v2ibx);
+        $v2im->{lock_path} = undef;
+        $v2im->{path_type} = 'v2';
+        $v2im->add(eml_load('t/mda-mime.eml'));
+        $v2im->done;
+        chomp(my $tip = $git0->qx(qw(rev-parse HEAD^0)));
+        isnt($tip, $cmt, '0.git v2 updated');
+
+        # inject a message w/o updating index
+        rename("$home/v1test/public-inbox", "$home/v1test/skip-index");
+        open(my $eh, '<', 't/iso-2202-jp.eml');
+        run_script(['-mda', '--no-precheck'], $env, { 0 => $eh}) or
+                BAIL_OUT '-mda';
+        rename("$home/v1test/skip-index", "$home/v1test/public-inbox");
+
+        my ($in, $out, $err);
+        $in = $out = $err = '';
+        my $opt = { 0 => \$in, 1 => \$out, 2 => \$err };
+        ok(run_script([qw(-extindex -v -v --all), "$home/extindex"],
+                undef, undef), 'extindex noop');
+        $es->{xdb}->reopen;
+        my $mset = $es->mset('mid:199707281508.AAA24167@hoyogw.example');
+        is($mset->size, 0, 'did not attempt to index unindexed v1 message');
+        $mset = $es->mset('mid:multipart-html-sucks@11');
+        is($mset->size, 0, 'did not attempt to index unindexed v2 message');
+        ok(run_script([qw(-index --all)]), 'indexed v1 and v2 inboxes');
+
+        isnt($v1ibx->mm->last_commit, $last_v1_commit, '-index v1 worked');
+        isnt($v2ibx->mm->last_commit_xap($schema_version, 0),
+                $last_v2_commit, '-index v2 worked');
+        ok(run_script([qw(-extindex --all), "$home/extindex"]),
+                'extindex updates');
+
+        $es->{xdb}->reopen;
+        $mset = $es->mset('mid:199707281508.AAA24167@hoyogw.example');
+        is($mset->size, 1, 'got v1 message');
+        $mset = $es->mset('mid:multipart-html-sucks@11');
+        is($mset->size, 1, 'got v2 message');
+}
+
+if ('reindex catches missed messages') {
+        my $v2ibx = $cfg->lookup_name('v2test');
+        $v2ibx->{-no_fsync} = 1;
+        my $im = PublicInbox::InboxWritable->new($v2ibx)->importer(0);
+        my $cmt_a = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        my $eml = eml_load('t/data/0001.patch');
+        $im->add($eml);
+        $im->done;
+        my $cmt_b = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        isnt($cmt_a, $cmt_b, 'v2 0.git HEAD updated');
+        $oidx->dbh;
+        my $uv = $v2ibx->uidvalidity;
+        my $lc_key = "lc-v2:v2.example//$uv;0";
+        is($oidx->eidx_meta($lc_key, $cmt_b), $cmt_a,
+                'update lc-v2 meta, old is as expected');
+        my $max = $oidx->max;
+        $oidx->dbh_close;
+        ok(run_script([qw(-extindex), "$home/extindex", $v2ibx->{inboxdir}]),
+                '-extindex noop');
+        is($oidx->max, $max, '->max unchanged');
+        is($oidx->eidx_meta($lc_key), $cmt_b, 'lc-v2 unchanged');
+        $oidx->dbh_close;
+        my $opt = { 2 => \(my $err = '') };
+        ok(run_script([qw(-extindex --reindex), "$home/extindex",
+                        $v2ibx->{inboxdir}], undef, $opt),
+                        '--reindex for unseen');
+        is($oidx->max, $max + 1, '->max bumped');
+        is($oidx->eidx_meta($lc_key), $cmt_b, 'lc-v2 stays unchanged');
+        my @err = split(/^/, $err);
+        is(scalar(@err), 1, 'only one warning') or diag "err=$err";
+        like($err[0], qr/# reindex_unseen/, 'got reindex_unseen message');
+        my $new = $oidx->get_art($max + 1);
+        is($new->{subject}, $eml->header('Subject'), 'new message added');
+
+        $es->{xdb}->reopen;
+        # git patch-id --stable <t/data/0001.patch | awk '{print $1}'
+        my $patchid = '91ee6b761fc7f47cad9f2b09b10489f313eb5b71';
+        my $mset = $es->search->mset("patchid:$patchid");
+        is($mset->size, 1, 'patchid search works');
+
+        $mset = $es->mset("mid:$new->{mid}");
+        is($mset->size, 1, 'previously unseen, now indexed in Xapian');
+
+        ok($im->remove($eml), 'remove new message from v2 inbox');
+        $im->done;
+        my $cmt_c = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        is($oidx->eidx_meta($lc_key, $cmt_c), $cmt_b,
+                'bump lc-v2 meta again to skip v2 remove');
+        $err = '';
+        $oidx->dbh_close;
+        ok(run_script([qw(-extindex --reindex), "$home/extindex",
+                        $v2ibx->{inboxdir}], undef, $opt),
+                        '--reindex for stale');
+        @err = split(/^/, $err);
+        is(scalar(@err), 1, 'only one warning') or diag "err=$err";
+        like($err[0], qr/\(#$new->{num}\): stale/, 'got stale message warning');
+        is($oidx->get_art($new->{num}), undef,
+                'stale message gone from over');
+        is_deeply($oidx->get_xref3($new->{num}), [],
+                'stale message has no xref3');
+        $es->{xdb}->reopen;
+        $mset = $es->mset("mid:$new->{mid}");
+        is($mset->size, 0, 'stale mid gone Xapian');
+
+        ok(run_script([qw(-extindex --reindex --all --fast), "$home/extindex"],
+                        undef, $opt), '--reindex w/ --fast');
+        ok(!run_script([qw(-extindex --all --fast), "$home/extindex"],
+                        undef, $opt), '--fast alone makes no sense');
+}
+
+if ('reindex catches content bifurcation') {
+        use PublicInbox::MID qw(mids);
+        my $v2ibx = $cfg->lookup_name('v2test');
+        $v2ibx->{-no_fsync} = 1;
+        my $im = PublicInbox::InboxWritable->new($v2ibx)->importer(0);
+        my $eml = eml_load('t/data/message_embed.eml');
+        my $cmt_a = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        $im->add($eml);
+        $im->done;
+        my $cmt_b = $v2ibx->mm->last_commit_xap($schema_version, 0);
+        my $uv = $v2ibx->uidvalidity;
+        my $lc_key = "lc-v2:v2.example//$uv;0";
+        $oidx->dbh;
+        is($oidx->eidx_meta($lc_key, $cmt_b), $cmt_a,
+                'update lc-v2 meta, old is as expected');
+        my $mid = mids($eml)->[0];
+        my $smsg = $v2ibx->over->next_by_mid($mid, \(my $id), \(my $prev));
+        my $oldmax = $oidx->max;
+        my $x3_orig = $oidx->get_xref3(3);
+        is(scalar(@$x3_orig), 1, '#3 has one xref');
+        $oidx->add_xref3(3, $smsg->{num}, $smsg->{blob}, 'v2.example');
+        my $x3 = $oidx->get_xref3(3);
+        is(scalar(@$x3), 2, 'injected xref3');
+        $oidx->commit_lazy;
+        my $opt = { 2 => \(my $err = '') };
+        ok(run_script([qw(-extindex --all), "$home/extindex"], undef, $opt),
+                'extindex --all is noop');
+        is($err, '', 'no warnings in index');
+        $oidx->dbh;
+        is($oidx->max, $oldmax, 'oidx->max unchanged');
+        $oidx->dbh_close;
+        ok(run_script([qw(-extindex --reindex --all), "$home/extindex"],
+                undef, $opt), 'extindex --reindex') or diag explain($opt);
+        $oidx->dbh;
+        ok($oidx->max > $oldmax, 'oidx->max bumped');
+        like($err, qr/split into 2 due to deduplication change/,
+                'bifurcation noted');
+        my $added = $oidx->get_art($oidx->max);
+        is($added->{blob}, $smsg->{blob}, 'new blob indexed');
+        is_deeply(["v2.example:$smsg->{num}:$smsg->{blob}"],
+                $oidx->get_xref3($added->{num}),
+                'xref3 corrected for bifurcated message');
+        is_deeply($oidx->get_xref3(3), $x3_orig, 'xref3 restored for #3');
+}
+
+if ('--reindex --rethread') {
+        my $before = $oidx->dbh->selectrow_array(<<'');
+SELECT MAX(tid) FROM over WHERE num > 0
+
+        my $opt = {};
+        ok(run_script([qw(-extindex --reindex --rethread --all),
+                        "$home/extindex"], undef, $opt),
+                        '--rethread');
+        my $after = $oidx->dbh->selectrow_array(<<'');
+SELECT MIN(tid) FROM over WHERE num > 0
+
+        # actual rethread logic is identical to v1/v2 and tested elsewhere
+        ok($after > $before, '--rethread updates MIN(tid)');
+}
+
+if ('remove v1test and test gc') {
+        xsys([qw(git config --unset publicinbox.v1test.inboxdir)],
+                { GIT_CONFIG => $cfg_path });
+        my $opt = { 2 => \(my $err = '') };
+        ok(run_script([qw(-extindex --gc), "$home/extindex"], undef, $opt),
+                'extindex --gc');
+        like($err, qr/^# remove #1 v1\.example /ms, 'removed v1 message');
+        is(scalar(grep(!/^#/, split(/^/m, $err))), 0,
+                'no non-informational messages');
+        $misc->{xdb}->reopen;
+        @it = $misc->mset('')->items;
+        is(scalar(@it), 1, 'only one inbox left');
+}
+
+if ('dedupe + dry-run') {
+        my @cmd = ('-extindex', "$home/extindex");
+        my $opt = { 2 => \(my $err = '') };
+        ok(run_script([@cmd, '--dedupe'], undef, $opt), '--dedupe');
+        ok(run_script([@cmd, qw(--dedupe --dry-run)], undef, $opt),
+                '--dry-run --dedupe');
+        is $err, '', 'no errors';
+        ok(!run_script([@cmd, qw(--dry-run)], undef, $opt),
+                '--dry-run alone fails');
+}
+
+# chmod 0755, $home or xbail "chmod: $!";
+for my $j (1, 3, 6) {
+        my $o = { 2 => \(my $err = '') };
+        my $d = "$home/extindex-j$j";
+        ok(run_script(['-extindex', "-j$j", '--all', $d], undef, $o),
+                "init with -j$j");
+        my $max = $j - 2;
+        $max = 0 if $max < 0;
+        my @dirs = glob("$d/ei*/?");
+        like($dirs[-1], qr!/ei[0-9]+/$max\z!, '-j works');
+}
+
+SKIP: {
+        my $d = "$home/extindex-j1";
+        my $es = PublicInbox::ExtSearch->new($d);
+        ok(my $nresult0 = $es->mset('z:0..')->size, 'got results');
+        ok(ref($es->{xdb}), '{xdb} created');
+        my $nshards1 = $es->{nshard};
+        is($nshards1, 1, 'correct shard count');
+
+        my @ei_dir = glob("$d/ei*/");
+        chmod 0755, $ei_dir[0] or xbail "chmod: $!";
+        my $mode = sprintf('%04o', 07777 & (stat($ei_dir[0]))[2]);
+        is($mode, '0755', 'mode set on ei*/ dir');
+        my $o = { 2 => \(my $err = '') };
+        ok(run_script([qw(-xcpdb -R4), $d]), 'xcpdb R4');
+        my @dirs = glob("$d/ei*/?");
+        for my $i (0..3) {
+                is(grep(m!/ei[0-9]+/$i\z!, @dirs), 1, "shard [$i] created");
+                my $m = sprintf('%04o', 07777 & (stat($dirs[$i]))[2]);
+                is($m, $mode, "shard [$i] mode");
+        }
+        delete @$es{qw(xdb qp)};
+        is($es->mset('z:0..')->size, $nresult0, 'new shards, same results');
+
+        for my $i (4..5) {
+                is(grep(m!/ei[0-9]+/$i\z!, @dirs), 0, "no shard [$i]");
+        }
+
+        ok(run_script([qw(-xcpdb -R2), $d]), 'xcpdb -R2');
+        @dirs = glob("$d/ei*/?");
+        for my $i (0..1) {
+                is(grep(m!/ei[0-9]+/$i\z!, @dirs), 1, "shard [$i] kept");
+        }
+        for my $i (2..3) {
+                is(grep(m!/ei[0-9]+/$i\z!, @dirs), 0, "no shard [$i]");
+        }
+        have_xapian_compact 1;
+        ok(run_script([qw(-compact), $d], undef, $o), 'compact');
+        # n.b. stderr contains xapian-compact output
+
+        my @d2 = glob("$d/ei*/?");
+        is_deeply(\@d2, \@dirs, 'dirs consistent after compact');
+        ok(run_script([qw(-extindex --dedupe --all), $d]),
+                '--dedupe works after compact');
+        ok(run_script([qw(-extindex --gc), $d], undef, $o),
+                '--gc works after compact');
+}
+
+{ # ensure --gc removes non-xposted messages
+        my $old_size = -s $cfg_path // xbail "stat $cfg_path $!";
+        my $tmp_addr = 'v2tmp@example.com';
+        run_script([qw(-init v2tmp --indexlevel basic
+                --newsgroup v2tmp.example),
+                "$home/v2tmp", 'http://example.com/v2tmp', $tmp_addr ])
+                or xbail '-init';
+        $env = { ORIGINAL_RECIPIENT => $tmp_addr };
+        my $mid = 'tmpmsg@example.com';
+        my $in = \<<EOM;
+From: b\@z
+To: b\@r
+Message-Id: <$mid>
+Subject: tmpmsg
+Date: Tue, 19 Jan 2038 03:14:07 +0000
+
+EOM
+        run_script([qw(-mda --no-precheck)], $env, {0 => $in}) or xbail '-mda';
+        ok(run_script([qw(-extindex --all), "$home/extindex"]), 'update');
+        my $nr;
+        {
+                my $es = PublicInbox::ExtSearch->new("$home/extindex");
+                my ($id, $prv);
+                my $smsg = $es->over->next_by_mid($mid, \$id, \$prv);
+                ok($smsg, 'tmpmsg indexed');
+                my $mset = $es->search->mset("mid:$mid");
+                is($mset->size, 1, 'new message found');
+                $mset = $es->search->mset('z:0..');
+                $nr = $mset->size;
+        }
+        truncate($cfg_path, $old_size);
+        my $rdr = { 2 => \(my $err) };
+        ok(run_script([qw(-extindex --gc), "$home/extindex"], undef, $rdr),
+                'gc to get rid of removed inbox');
+        is_deeply([ grep(!/^(?:I:|#)/, split(/^/m, $err)) ], [],
+                'no non-informational errors in stderr');
+
+        my $es = PublicInbox::ExtSearch->new("$home/extindex");
+        my $mset = $es->search->mset("mid:$mid");
+        is($mset->size, 0, 'tmpmsg gone from search');
+        my ($id, $prv);
+        is($es->over->next_by_mid($mid, \$id, \$prv), undef,
+                'tmpmsg gone from over');
+        $id = $prv = undef;
+        is($es->over->next_by_mid('testmessage@example.com', \$id, \$prv),
+                undef, 'remaining message not indavderover');
+        $mset = $es->search->mset('z:0..');
+        is($mset->size, $nr - 1, 'existing messages not clobbered from search');
+        my $o = $es->over->{dbh}->selectall_arrayref(<<EOM);
+SELECT num FROM over ORDER BY num
+EOM
+        is(scalar(@$o), $mset->size, 'over row count matches Xapian');
+        my $x = $es->over->{dbh}->selectall_arrayref(<<EOM);
+SELECT DISTINCT(docid) FROM xref3 ORDER BY docid
+EOM
+        is_deeply($x, $o, 'xref3 and over docids match');
+}
+
+{
+        my $d = "$home/eidx-med";
+        ok(run_script([qw(-extindex --dangerous --all -L medium -j3), $d]),
+                'extindex medium init');
+        my $es = PublicInbox::ExtSearch->new($d);
+        is($es->xdb->get_metadata('indexlevel'), 'medium',
+                'es indexlevel before');
+        my @xdb = $es->xdb_shards_flat;
+        is($xdb[0]->get_metadata('indexlevel'), 'medium',
+                '0 indexlevel before');
+        shift @xdb;
+        for (@xdb) {
+                ok(!$_->get_metadata('indexlevel'), 'no indexlevel in >0 shard')
+        }
+        is($es->xdb->get_metadata('indexlevel'), 'medium', 'indexlevel before');
+        ok(run_script([qw(-xcpdb -R5), $d]), 'xcpdb R5');
+        $es = PublicInbox::ExtSearch->new($d);
+        is($es->xdb->get_metadata('indexlevel'), 'medium',
+                '0 indexlevel after');
+        @xdb = $es->xdb_shards_flat;
+        is(scalar(@xdb), 5, 'got 5 shards');
+        is($xdb[0]->get_metadata('indexlevel'), 'medium', '0 indexlevel after');
+        shift @xdb;
+        for (@xdb) {
+                ok(!$_->get_metadata('indexlevel'), 'no indexlevel in >0 shard')
+        }
+}
+
+test_lei(sub {
+        my $d = "$home/extindex";
+        lei_ok('convert', '-o', "$home/md1", $d);
+        lei_ok('convert', '-o', "$home/md2", "extindex:$d");
+        my $dst = [];
+        my $cb = sub { push @$dst, $_[2]->as_string };
+        require PublicInbox::MdirReader;
+        PublicInbox::MdirReader->new->maildir_each_eml("$home/md1", $cb);
+        my @md1 = sort { $a cmp $b } @$dst;
+        ok(scalar(@md1), 'dumped messages to md1');
+        $dst = [];
+        PublicInbox::MdirReader->new->maildir_each_eml("$home/md2", $cb);
+        @$dst = sort { $a cmp $b } @$dst;
+        is_deeply($dst, \@md1,
+                "convert from extindex w/ or w/o `extindex' prefix");
+
+        my @o = glob "$home/extindex/ei*/over.sqlite*";
+        unlink(@o);
+        ok(!lei('convert', '-o', "$home/fail", "extindex:$d"));
+        like($lei_err, qr/unindexed .*?not supported/,
+                'noted unindexed extindex is unsupported');
+});
+
+done_testing;