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(
20 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, 1, 'only one SQL statement executed');
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(
70 join => { cds => 'tags' },
77 # SELECT count for nested has_many prefetch
78 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
79 DBI->trace(1, 't/var/dbic.trace');
81 $artist = ($rs->all)[0];
86 $trace = IO::File->new('t/var/dbic.trace', '<')
87 or die "Unable to read trace file";
89 $selects++ if /SELECT/;
92 unlink 't/var/dbic.trace';
93 is($selects, 1, 'only one SQL statement executed');
96 #$artist = $rs->find(1);
98 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
99 DBI->trace(1, 't/var/dbic.trace');
101 my $cds = $artist->cds;
102 my $tags = $cds->next->tags;
103 while( my $tag = $tags->next ) {
104 push @objs, $tag->tagid; #warn "tag:", $tag->ID, " => ", $tag->tag;
107 is_deeply( \@objs, [ 3 ], 'first cd has correct tags' );
109 $tags = $cds->next->tags;
111 while( my $tag = $tags->next ) {
112 push @objs, $tag->id; #warn "tag: ", $tag->ID;
115 is_deeply( \@objs, [ 2, 5, 8 ], 'second cd has correct tags' );
118 DBI->trace(0, undef);
120 $trace = IO::File->new('t/var/dbic.trace', '<')
121 or die "Unable to read trace file";
123 $selects++ if /SELECT/;
126 unlink 't/var/dbic.trace';
128 is( $selects, 0, 'no additional SQL statements while checking nested data' );
130 # start test for prefetch SELECT count
131 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
132 DBI->trace(1, 't/var/dbic.trace');
134 $artist = $schema->resultset('Artist')->find(1, { prefetch => [qw/cds/] });
137 DBI->trace(0, undef);
139 $trace = IO::File->new('t/var/dbic.trace', '<')
140 or die "Unable to read trace file";
142 $selects++ if /SELECT/;
145 unlink 't/var/dbic.trace';
147 is( $selects, 1, 'only one select statement on find with inline has_many prefetch' );
149 # start test for prefetch SELECT count
150 unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
151 DBI->trace(1, 't/var/dbic.trace');
153 $rs = $schema->resultset('Artist')->search(undef, { prefetch => [qw/cds/] });
154 $artist = $rs->find(1);
157 DBI->trace(0, undef);
159 $trace = IO::File->new('t/var/dbic.trace', '<')
160 or die "Unable to read trace file";
162 $selects++ if /SELECT/;
165 unlink 't/var/dbic.trace';
167 is( $selects, 1, 'only one select statement on find with has_many prefetch on resultset' );