4 eval "use DBD::SQLite";
5 plan skip_all => 'needs DBD::SQLite for testing' if $@;
8 my $rs = $schema->resultset("Artist")->search(
12 my $artist = $rs->first;
14 is( scalar @{ $rs->get_cache }, 0, 'cache is not populated without cache attribute' );
16 $rs = $schema->resultset("Artist")->search(
19 prefetch => [qw/ cds /],
24 # use Data::Dumper; $Data::Dumper::Deparse = 1;
26 # start test for prefetch SELECT count
27 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
28 DBI->trace(1, 't/var/dbic.trace');
33 # make sure artist contains a related resultset for cds
34 is( ref $artist->{related_resultsets}->{cds}, 'DBIx::Class::ResultSet', 'artist has a related_resultset for cds' );
36 # check if $artist->cds->get_cache is populated
37 is( scalar @{$artist->cds->get_cache}, 3, 'cache for artist->cds contains correct number of records');
39 # ensure that $artist->cds returns correct number of objects
40 is( scalar ($artist->cds), 3, 'artist->cds returns correct number of objects' );
42 # ensure that $artist->cds->count returns correct value
43 is( $artist->cds->count, 3, 'artist->cds->count returns correct value' );
45 # ensure that $artist->count_related('cds') returns correct value
46 is( $artist->count_related('cds'), 3, 'artist->count_related returns correct value' );
51 my $trace = IO::File->new('t/var/dbic.trace', '<')
52 or die "Unable to read trace file";
54 $selects++ if /SELECT/;
57 unlink 't/var/dbic.trace';
58 is($selects, 2, 'only one SQL statement for each cached table');
60 # make sure related_resultset is deleted after object is updated
61 $artist->set_column('name', 'New Name');
64 is( scalar keys %{$artist->{related_resultsets}}, 0, 'related resultsets deleted after update' );
66 # todo: make sure caching works with nested prefetch e.g. $artist->cds->tracks
67 $rs = $schema->resultset("Artist")->search(