$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' );
+isa_ok( $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');