Fixup MANIFEST, rename 22cache -> 23cache, tweak to search

[dbsrgits/DBIx-Class.git] / t / run / 23cache.tl

diff --git a/t/run/23cache.tl b/t/run/23cache.tl
new file mode 100644 (file)
index 0000000..6732fc3
--- /dev/null
+++ b/t/run/23cache.tl
@@ -0,0 +1,132 @@
+sub run_tests {
+my $schema = shift;
+
+eval "use DBD::SQLite";
+plan skip_all => 'needs DBD::SQLite for testing' if $@;
+plan tests => 12;
+
+my $rs = $schema->resultset("Artist")->search(
+  { artistid => 1 }
+);
+
+my $artist = $rs->first;
+
+is( scalar @{ $rs->get_cache }, 0, 'cache is not populated without cache attribute' );
+
+$rs = $schema->resultset("Artist")->search(
+  { 'artistid' => 1 },
+  {
+    prefetch => [qw/ cds /],
+    cache => 1,
+  }
+);
+
+use Data::Dumper; $Data::Dumper::Deparse = 1;
+
+# start test for prefetch SELECT count
+unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
+DBI->trace(1, 't/var/dbic.trace');
+
+$artist = $rs->first;
+$rs->reset();
+
+# make sure artist contains a related resultset for cds
+is( ref $artist->{related_resultsets}->{cds}, 'DBIx::Class::ResultSet', 'artist has a related_resultset for cds' );
+
+# check if $artist->cds->get_cache is populated
+is( scalar @{$artist->cds->get_cache}, 3, 'cache for artist->cds contains correct number of records');
+
+# ensure that $artist->cds returns correct number of objects
+is( scalar ($artist->cds), 3, 'artist->cds returns correct number of objects' );
+
+# ensure that $artist->cds->count returns correct value
+is( $artist->cds->count, 3, 'artist->cds->count returns correct value' );
+
+# ensure that $artist->count_related('cds') returns correct value
+is( $artist->count_related('cds'), 3, 'artist->count_related returns correct value' );
+
+# count the SELECTs
+DBI->trace(0, undef);
+my $selects = 0;
+my $trace = IO::File->new('t/var/dbic.trace', '<') 
+    or die "Unable to read trace file";
+while (<$trace>) {
+    $selects++ if /SELECT/;
+}
+$trace->close;
+unlink 't/var/dbic.trace';
+is($selects, 2, 'only one SQL statement for each cached table');
+
+# make sure related_resultset is deleted after object is updated
+$artist->set_column('name', 'New Name');
+$artist->update();
+
+is( scalar keys %{$artist->{related_resultsets}}, 0, 'related resultsets deleted after update' );
+
+# todo: make sure caching works with nested prefetch e.g. $artist->cds->tracks
+$rs = $schema->resultset("Artist")->search(
+  { artistid => 1 },
+  {
+    prefetch => {
+      cds => 'tags'
+    },
+    cache => 1
+  }
+);
+
+# SELECT count for nested has_many prefetch
+unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
+DBI->trace(1, 't/var/dbic.trace');
+
+$artist = $rs->first;
+
+# count the SELECTs
+DBI->trace(0, undef);
+$selects = 0;
+$trace = IO::File->new('t/var/dbic.trace', '<') 
+    or die "Unable to read trace file";
+while (<$trace>) {
+    $selects++ if /SELECT/;
+}
+$trace->close;
+unlink 't/var/dbic.trace';
+is($selects, 3, 'one SQL statement for each cached table with nested prefetch');
+
+my @objs;
+$artist = $rs->find(1);
+
+unlink 't/var/dbic.trace' if -e 't/var/dbic.trace';
+DBI->trace(1, 't/var/dbic.trace');
+
+my $cds = $artist->cds;
+my $tags = $cds->next->tags;
+while( my $tag = $tags->next ) {
+  push @objs, $tag->tagid; #warn "tag:", $tag->ID;
+}
+
+is_deeply( \@objs, [ 1 ], 'first cd has correct tags' );
+
+$tags = $cds->next->tags;
+@objs = ();
+while( my $tag = $tags->next ) {
+  push @objs, $tag->id; #warn "tag: ", $tag->ID;
+}
+
+is_deeply( \@objs, [ 2, 5, 8 ], 'second cd has correct tags' );
+
+# count the SELECTs
+DBI->trace(0, undef);
+$selects = 0;
+$trace = IO::File->new('t/var/dbic.trace', '<') 
+    or die "Unable to read trace file";
+while (<$trace>) {
+    $selects++ if /SELECT/;
+}
+$trace->close;
+unlink 't/var/dbic.trace';
+
+is( $selects, 0, 'no additional SQL statements while checking nested data' );
+
+}
+
+1;