[dbsrgits/DBIx-Class-Historic.git] / t / 66relationship.t

use strict;
use warnings;

use Test::More;
use Test::Exception;
use lib qw(t/lib);
use DBICTest;

my $schema = DBICTest->init_schema();

plan tests => 71;

# has_a test
my $cd = $schema->resultset("CD")->find(4);
my ($artist) = ($INC{'DBICTest/HelperRels'}
                  ? $cd->artist
                  : $cd->search_related('artist'));
is($artist->name, 'Random Boy Band', 'has_a search_related ok');

# has_many test with an order_by clause defined
$artist = $schema->resultset("Artist")->find(1);
my @cds = ($INC{'DBICTest/HelperRels'}
             ? $artist->cds
             : $artist->search_related('cds'));
is( $cds[1]->title, 'Spoonful of bees', 'has_many search_related with order_by ok' );

# search_related with additional abstract query
@cds = ($INC{'DBICTest/HelperRels'}
          ? $artist->cds({ title => { like => '%of%' } })
          : $artist->search_related('cds', { title => { like => '%of%' } } )
       );
is( $cds[1]->title, 'Forkful of bees', 'search_related with abstract query ok' );

# creating a related object
if ($INC{'DBICTest/HelperRels.pm'}) {
  $artist->add_to_cds({ title => 'Big Flop', year => 2005 });
} else {
  my $big_flop = $artist->create_related( 'cds', {
      title => 'Big Flop',
      year => 2005,
  } );

 SKIP:{
    skip "Can't fix right now", 1 unless $DBIx::Class::VERSION >= '0.09';
    lives_ok { $big_flop->genre} "Don't throw exception when col is not loaded after insert";
  };
}

my $big_flop_cd = ($artist->search_related('cds'))[3];
is( $big_flop_cd->title, 'Big Flop', 'create_related ok' );

{ # make sure we are not making pointless select queries when a FK IS NULL
  my $queries = 0;
  $schema->storage->debugcb(sub { $queries++; });
  $schema->storage->debug(1);
  $big_flop_cd->genre; #should not trigger a select query
  is($queries, 0, 'No SELECT made for belongs_to if key IS NULL');
  $big_flop_cd->genre_inefficient; #should trigger a select query
  is($queries, 1, 'SELECT made for belongs_to if key IS NULL when undef_on_null_fk disabled');
  $schema->storage->debug(0);
  $schema->storage->debugcb(undef);
}

my( $rs_from_list ) = $artist->search_related_rs('cds');
is( ref($rs_from_list), 'DBIx::Class::ResultSet', 'search_related_rs in list context returns rs' );

( $rs_from_list ) = $artist->cds_rs();
is( ref($rs_from_list), 'DBIx::Class::ResultSet', 'relation_rs in list context returns rs' );

# count_related
is( $artist->count_related('cds'), 4, 'count_related ok' );

# set_from_related
my $track = $schema->resultset("Track")->create( {
  trackid => 1,
  cd => 3,
  position => 98,
  title => 'Hidden Track'
} );
$track->set_from_related( cd => $cd );

is($track->disc->cdid, 4, 'set_from_related ok, including alternative accessor' );

$track->set_from_related( cd => undef );

ok( !defined($track->cd), 'set_from_related with undef ok');

TODO: {
    local $TODO = 'accessing $object->rel and set_from_related';
    my $track = $schema->resultset("Track")->new( {} );
    $track->cd;
    $track->set_from_related( cd => $cd ); 
    ok ($track->cd, 'set_from_related ok after using the accessor' );
};

# update_from_related, the same as set_from_related, but it calls update afterwards
$track = $schema->resultset("Track")->create( {
  trackid => 2,
  cd => 3,
  title => 'Hidden Track 2'
} );
$track->update_from_related( cd => $cd );

my $t_cd = ($schema->resultset("Track")->search( cd => 4, title => 'Hidden Track 2' ))[0]->cd;

is( $t_cd->cdid, 4, 'update_from_related ok' );

# find_or_create_related with an existing record
$cd = $artist->find_or_create_related( 'cds', { title => 'Big Flop' } );
is( $cd->year, 2005, 'find_or_create_related on existing record ok' );

# find_or_create_related creating a new record
$cd = $artist->find_or_create_related( 'cds', {
  title => 'Greatest Hits',
  year => 2006,
} );
is( $cd->title, 'Greatest Hits', 'find_or_create_related new record ok' );

@cds = $artist->search_related('cds');
is( ($artist->search_related('cds'))[4]->title, 'Greatest Hits', 'find_or_create_related new record search ok' );

$artist->delete_related( cds => { title => 'Greatest Hits' });
cmp_ok( $schema->resultset("CD")->search( title => 'Greatest Hits' ), '==', 0, 'delete_related ok' );

# find_or_new_related with an existing record
$cd = $artist->find_or_new_related( 'cds', { title => 'Big Flop' } );
is( $cd->year, 2005, 'find_or_new_related on existing record ok' );
ok( $cd->in_storage, 'find_or_new_related on existing record: is in_storage' );

# find_or_new_related instantiating a new record
$cd = $artist->find_or_new_related( 'cds', {
  title => 'Greatest Hits 2: Louder Than Ever',
  year => 2007,
} );
is( $cd->title, 'Greatest Hits 2: Louder Than Ever', 'find_or_new_related new record ok' );
ok( ! $cd->in_storage, 'find_or_new_related on a new record: not in_storage' );

$cd->artist(undef);
my $newartist = $cd->find_or_new_related( 'artist', {
  name => 'Random Boy Band Two',
  artistid => 200,
} );
is($newartist->name, 'Random Boy Band Two', 'find_or_new_related new artist record with id');
is($newartist->id, 200, 'find_or_new_related new artist id set');

lives_ok( 
    sub { 
        my $new_bookmark = $schema->resultset("Bookmark")->new_result( {} );
        my $new_related_link = $new_bookmark->new_related( 'link', {} );
    },
    'No back rel'
);


TODO: {
  local $TODO = "relationship checking needs fixing";
  # try to add a bogus relationship using the wrong cols
  eval {
      DBICTest::Schema::Artist->add_relationship(
          tracks => 'DBICTest::Schema::Track',
          { 'foreign.cd' => 'self.cdid' }
      );
  };
  like($@, qr/Unknown column/, 'failed when creating a rel with invalid key, ok');
}
  
# another bogus relationship using no join condition
eval {
    DBICTest::Schema::Artist->add_relationship( tracks => 'DBICTest::Track' );
};
like($@, qr/join condition/, 'failed when creating a rel without join condition, ok');

# many_to_many helper tests
$cd = $schema->resultset("CD")->find(1);
my @producers = $cd->producers();
is( $producers[0]->name, 'Matt S Trout', 'many_to_many ok' );
is( $cd->producers_sorted->next->name, 'Bob The Builder',
    'sorted many_to_many ok' );
is( $cd->producers_sorted(producerid => 3)->next->name, 'Fred The Phenotype',
    'sorted many_to_many with search condition ok' );

$cd = $schema->resultset('CD')->find(2);
my $prod_rs = $cd->producers();
my $prod_before_count = $schema->resultset('Producer')->count;
is( $prod_rs->count, 0, "CD doesn't yet have any producers" );
my $prod = $schema->resultset('Producer')->find(1);
$cd->add_to_producers($prod);
is( $prod_rs->count(), 1, 'many_to_many add_to_$rel($obj) count ok' );
is( $prod_rs->first->name, 'Matt S Trout',
    'many_to_many add_to_$rel($obj) ok' );
$cd->remove_from_producers($prod);
is( $schema->resultset('Producer')->find(1)->name, 'Matt S Trout',
    "producer object exists after remove of link" );
is( $prod_rs->count, 0, 'many_to_many remove_from_$rel($obj) ok' );
$cd->add_to_producers({ name => 'Testy McProducer' });
is( $schema->resultset('Producer')->count, $prod_before_count+1,
    'add_to_$rel($hash) inserted a new producer' );
is( $prod_rs->count(), 1, 'many_to_many add_to_$rel($hash) count ok' );
is( $prod_rs->first->name, 'Testy McProducer',
    'many_to_many add_to_$rel($hash) ok' );
$cd->add_to_producers({ name => 'Jack Black' });
is( $prod_rs->count(), 2, 'many_to_many add_to_$rel($hash) count ok' );
$cd->set_producers($schema->resultset('Producer')->all);
is( $cd->producers->count(), $prod_before_count+2, 
    'many_to_many set_$rel(@objs) count ok' );
$cd->set_producers($schema->resultset('Producer')->find(1));
is( $cd->producers->count(), 1, 'many_to_many set_$rel($obj) count ok' );
$cd->set_producers([$schema->resultset('Producer')->all]);
is( $cd->producers->count(), $prod_before_count+2, 
    'many_to_many set_$rel(\@objs) count ok' );
$cd->set_producers([$schema->resultset('Producer')->find(1)]);
is( $cd->producers->count(), 1, 'many_to_many set_$rel([$obj]) count ok' );

eval { $cd->remove_from_producers({ fake => 'hash' }); };
like( $@, qr/needs an object/, 'remove_from_$rel($hash) dies correctly' );

eval { $cd->add_to_producers(); };
like( $@, qr/needs an object or hashref/,
      'add_to_$rel(undef) dies correctly' );

# many_to_many stresstest
my $twokey = $schema->resultset('TwoKeys')->find(1,1);
my $fourkey = $schema->resultset('FourKeys')->find(1,2,3,4);

is( $twokey->fourkeys->count, 0, 'twokey has no fourkeys' );
$twokey->add_to_fourkeys($fourkey, { autopilot => 'engaged' });
my $got_fourkey = $twokey->fourkeys({ sensors => 'online' })->first;
is( $twokey->fourkeys->count, 1, 'twokey has one fourkey' );
is( $got_fourkey->$_, $fourkey->$_,
    'fourkeys row has the correct value for column '.$_ )
  for (qw(foo bar hello goodbye sensors));
$twokey->remove_from_fourkeys($fourkey);
is( $twokey->fourkeys->count, 0, 'twokey has no fourkeys' );
is( $twokey->fourkeys_to_twokeys->count, 0,
    'twokey has no links to fourkey' );

my $undef_artist_cd = $schema->resultset("CD")->new_result({ 'title' => 'badgers', 'year' => 2007 });
is($undef_artist_cd->has_column_loaded('artist'), '', 'FK not loaded');
is($undef_artist_cd->search_related('artist')->count, 0, '0=1 search when FK does not exist and object not yet in db');
eval{ 
     $undef_artist_cd->related_resultset('artist')->new({name => 'foo'});
};
is( $@, '', "Object created on a resultset related to not yet inserted object");
lives_ok{
  $schema->resultset('Artwork')->new_result({})->cd;
} 'undef_on_null_fk does not choke on empty conds';

my $def_artist_cd = $schema->resultset("CD")->new_result({ 'title' => 'badgers', 'year' => 2007, artist => undef });
is($def_artist_cd->has_column_loaded('artist'), 1, 'FK loaded');
is($def_artist_cd->search_related('artist')->count, 0, 'closed search on null FK');

# test undirected many-to-many relationship (e.g. "related artists")
my $undir_maps = $schema->resultset("Artist")->find(1)->artist_undirected_maps;
is($undir_maps->count, 1, 'found 1 undirected map for artist 1');

$undir_maps = $schema->resultset("Artist")->find(2)->artist_undirected_maps;
is($undir_maps->count, 1, 'found 1 undirected map for artist 2');

my $mapped_rs = $undir_maps->search_related('mapped_artists');

my @art = $mapped_rs->all;

cmp_ok(@art, '==', 2, "Both artist returned from map");

my $searched = $mapped_rs->search({'mapped_artists.artistid' => {'!=', undef}});

cmp_ok($searched->count, '==', 2, "Both artist returned from map after adding another condition");

# check join through cascaded has_many relationships
$artist = $schema->resultset("Artist")->find(1);
my $trackset = $artist->cds->search_related('tracks');
# LEFT join means we also see the trackless additional album...
cmp_ok($trackset->count, '==', 11, "Correct number of tracks for artist");

# now see about updating eveything that belongs to artist 2 to artist 3
$artist = $schema->resultset("Artist")->find(2);
my $nartist = $schema->resultset("Artist")->find(3);
cmp_ok($artist->cds->count, '==', 1, "Correct orig #cds for artist");
cmp_ok($nartist->cds->count, '==', 1, "Correct orig #cds for artist");
$artist->cds->update({artist => $nartist->id});
cmp_ok($artist->cds->count, '==', 0, "Correct new #cds for artist");
cmp_ok($nartist->cds->count, '==', 2, "Correct new #cds for artist");

# check if is_foreign_key_constraint attr is set
my $rs_normal = $schema->source('Track');
my $relinfo = $rs_normal->relationship_info ('cd');
cmp_ok($relinfo->{attrs}{is_foreign_key_constraint}, '==', 1, "is_foreign_key_constraint defined for belongs_to relationships.");

my $rs_overridden = $schema->source('ForceForeign');
my $relinfo_with_attr = $rs_overridden->relationship_info ('cd_3');
cmp_ok($relinfo_with_attr->{attrs}{is_foreign_key_constraint}, '==', 0, "is_foreign_key_constraint defined for belongs_to relationships with attr.");
Commit	Line	Data
70350518	1	use strict;
2f926160	2	use warnings;
70350518	3
4b8dcc58	4	use Test::More;
2f926160	5	use Test::Exception;
4b8dcc58	6	use lib qw(t/lib);
	7	use DBICTest;
	8
a47e1233	9	my $schema = DBICTest->init_schema();
5efe4c79	10
c49fcf72	11	plan tests => 71;
0567538f	12
0567538f	13	# has_a test
f9db5527	14	my $cd = $schema->resultset("CD")->find(4);
07037f89	15	my ($artist) = ($INC{'DBICTest/HelperRels'}
	16	? $cd->artist
	17	: $cd->search_related('artist'));
0567538f	18	is($artist->name, 'Random Boy Band', 'has_a search_related ok');
	19
	20	# has_many test with an order_by clause defined
f9db5527	21	$artist = $schema->resultset("Artist")->find(1);
07037f89	22	my @cds = ($INC{'DBICTest/HelperRels'}
	23	? $artist->cds
	24	: $artist->search_related('cds'));
	25	is( $cds[1]->title, 'Spoonful of bees', 'has_many search_related with order_by ok' );
0567538f	26
0567538f	27	# search_related with additional abstract query
07037f89	28	@cds = ($INC{'DBICTest/HelperRels'}
	29	? $artist->cds({ title => { like => '%of%' } })
	30	: $artist->search_related('cds', { title => { like => '%of%' } } )
	31	);
0567538f	32	is( $cds[1]->title, 'Forkful of bees', 'search_related with abstract query ok' );
	33
	34	# creating a related object
07037f89	35	if ($INC{'DBICTest/HelperRels.pm'}) {
	36	$artist->add_to_cds({ title => 'Big Flop', year => 2005 });
	37	} else {
c49fcf72	38	my $big_flop = $artist->create_related( 'cds', {
07037f89	39	title => 'Big Flop',
	40	year => 2005,
	41	} );
a4fcda00	42
	43	SKIP:{
	44	skip "Can't fix right now", 1 unless $DBIx::Class::VERSION >= '0.09';
	45	lives_ok { $big_flop->genre} "Don't throw exception when col is not loaded after insert";
	46	};
07037f89	47	}
07037f89	48
c89815db	49	my $big_flop_cd = ($artist->search_related('cds'))[3];
	50	is( $big_flop_cd->title, 'Big Flop', 'create_related ok' );
	51
	52	{ # make sure we are not making pointless select queries when a FK IS NULL
	53	my $queries = 0;
	54	$schema->storage->debugcb(sub { $queries++; });
	55	$schema->storage->debug(1);
	56	$big_flop_cd->genre; #should not trigger a select query
cef1bdda	57	is($queries, 0, 'No SELECT made for belongs_to if key IS NULL');
	58	$big_flop_cd->genre_inefficient; #should trigger a select query
	59	is($queries, 1, 'SELECT made for belongs_to if key IS NULL when undef_on_null_fk disabled');
c89815db	60	$schema->storage->debug(0);
	61	$schema->storage->debugcb(undef);
	62	}
0567538f	63
5b89a768	64	my( $rs_from_list ) = $artist->search_related_rs('cds');
	65	is( ref($rs_from_list), 'DBIx::Class::ResultSet', 'search_related_rs in list context returns rs' );
	66
	67	( $rs_from_list ) = $artist->cds_rs();
	68	is( ref($rs_from_list), 'DBIx::Class::ResultSet', 'relation_rs in list context returns rs' );
	69
0567538f	70	# count_related
	71	is( $artist->count_related('cds'), 4, 'count_related ok' );
	72
	73	# set_from_related
f9db5527	74	my $track = $schema->resultset("Track")->create( {
0567538f	75	trackid => 1,
	76	cd => 3,
	77	position => 98,
	78	title => 'Hidden Track'
	79	} );
	80	$track->set_from_related( cd => $cd );
	81
70350518	82	is($track->disc->cdid, 4, 'set_from_related ok, including alternative accessor' );
0567538f	83
2c037e6b	84	$track->set_from_related( cd => undef );
	85
	86	ok( !defined($track->cd), 'set_from_related with undef ok');
	87
f77bad73	88	TODO: {
	89	local $TODO = 'accessing $object->rel and set_from_related';
	90	my $track = $schema->resultset("Track")->new( {} );
	91	$track->cd;
	92	$track->set_from_related( cd => $cd );
	93	ok ($track->cd, 'set_from_related ok after using the accessor' );
	94	};
2c037e6b	95
0567538f	96	# update_from_related, the same as set_from_related, but it calls update afterwards
f9db5527	97	$track = $schema->resultset("Track")->create( {
0567538f	98	trackid => 2,
0567538f	99	cd => 3,
365d06b7	100	title => 'Hidden Track 2'
0567538f	101	} );
	102	$track->update_from_related( cd => $cd );
	103
d6df786a	104	my $t_cd = ($schema->resultset("Track")->search( cd => 4, title => 'Hidden Track 2' ))[0]->cd;
0567538f	105
70350518	106	is( $t_cd->cdid, 4, 'update_from_related ok' );
0567538f	107
	108	# find_or_create_related with an existing record
	109	$cd = $artist->find_or_create_related( 'cds', { title => 'Big Flop' } );
	110	is( $cd->year, 2005, 'find_or_create_related on existing record ok' );
	111
	112	# find_or_create_related creating a new record
	113	$cd = $artist->find_or_create_related( 'cds', {
	114	title => 'Greatest Hits',
	115	year => 2006,
	116	} );
	117	is( $cd->title, 'Greatest Hits', 'find_or_create_related new record ok' );
e02b9964	118
0567538f	119	@cds = $artist->search_related('cds');
	120	is( ($artist->search_related('cds'))[4]->title, 'Greatest Hits', 'find_or_create_related new record search ok' );
	121
87772e46	122	$artist->delete_related( cds => { title => 'Greatest Hits' });
f9db5527	123	cmp_ok( $schema->resultset("CD")->search( title => 'Greatest Hits' ), '==', 0, 'delete_related ok' );
0567538f	124
b3e1f1f5	125	# find_or_new_related with an existing record
	126	$cd = $artist->find_or_new_related( 'cds', { title => 'Big Flop' } );
	127	is( $cd->year, 2005, 'find_or_new_related on existing record ok' );
	128	ok( $cd->in_storage, 'find_or_new_related on existing record: is in_storage' );
	129
	130	# find_or_new_related instantiating a new record
	131	$cd = $artist->find_or_new_related( 'cds', {
	132	title => 'Greatest Hits 2: Louder Than Ever',
	133	year => 2007,
	134	} );
	135	is( $cd->title, 'Greatest Hits 2: Louder Than Ever', 'find_or_new_related new record ok' );
	136	ok( ! $cd->in_storage, 'find_or_new_related on a new record: not in_storage' );
	137
e02b9964	138	$cd->artist(undef);
	139	my $newartist = $cd->find_or_new_related( 'artist', {
	140	name => 'Random Boy Band Two',
	141	artistid => 200,
	142	} );
e02b9964	143	is($newartist->name, 'Random Boy Band Two', 'find_or_new_related new artist record with id');
	144	is($newartist->id, 200, 'find_or_new_related new artist id set');
	145
f623c6ee	146	lives_ok(
	147	sub {
	148	my $new_bookmark = $schema->resultset("Bookmark")->new_result( {} );
	149	my $new_related_link = $new_bookmark->new_related( 'link', {} );
	150	},
	151	'No back rel'
	152	);
	153
	154
a0dd8679	155	TODO: {
a0dd8679	156	local $TODO = "relationship checking needs fixing";
87772e46	157	# try to add a bogus relationship using the wrong cols
	158	eval {
	159	DBICTest::Schema::Artist->add_relationship(
	160	tracks => 'DBICTest::Schema::Track',
	161	{ 'foreign.cd' => 'self.cdid' }
	162	);
	163	};
	164	like($@, qr/Unknown column/, 'failed when creating a rel with invalid key, ok');
	165	}
	166
0567538f	167	# another bogus relationship using no join condition
0567538f	168	eval {
3712e4f4	169	DBICTest::Schema::Artist->add_relationship( tracks => 'DBICTest::Track' );
0567538f	170	};
	171	like($@, qr/join condition/, 'failed when creating a rel without join condition, ok');
	172
b3f358b5	173	# many_to_many helper tests
f9db5527	174	$cd = $schema->resultset("CD")->find(1);
7411204b	175	my @producers = $cd->producers();
7411204b	176	is( $producers[0]->name, 'Matt S Trout', 'many_to_many ok' );
b3f358b5	177	is( $cd->producers_sorted->next->name, 'Bob The Builder',
	178	'sorted many_to_many ok' );
	179	is( $cd->producers_sorted(producerid => 3)->next->name, 'Fred The Phenotype',
	180	'sorted many_to_many with search condition ok' );
7411204b	181
3a868fb2	182	$cd = $schema->resultset('CD')->find(2);
b3f358b5	183	my $prod_rs = $cd->producers();
	184	my $prod_before_count = $schema->resultset('Producer')->count;
	185	is( $prod_rs->count, 0, "CD doesn't yet have any producers" );
3a868fb2	186	my $prod = $schema->resultset('Producer')->find(1);
3a868fb2	187	$cd->add_to_producers($prod);
3a868fb2	188	is( $prod_rs->count(), 1, 'many_to_many add_to_$rel($obj) count ok' );
b3f358b5	189	is( $prod_rs->first->name, 'Matt S Trout',
b3f358b5	190	'many_to_many add_to_$rel($obj) ok' );
3a868fb2	191	$cd->remove_from_producers($prod);
b3f358b5	192	is( $schema->resultset('Producer')->find(1)->name, 'Matt S Trout',
	193	"producer object exists after remove of link" );
	194	is( $prod_rs->count, 0, 'many_to_many remove_from_$rel($obj) ok' );
303cf522	195	$cd->add_to_producers({ name => 'Testy McProducer' });
b3f358b5	196	is( $schema->resultset('Producer')->count, $prod_before_count+1,
b3f358b5	197	'add_to_$rel($hash) inserted a new producer' );
303cf522	198	is( $prod_rs->count(), 1, 'many_to_many add_to_$rel($hash) count ok' );
b3f358b5	199	is( $prod_rs->first->name, 'Testy McProducer',
	200	'many_to_many add_to_$rel($hash) ok' );
	201	$cd->add_to_producers({ name => 'Jack Black' });
	202	is( $prod_rs->count(), 2, 'many_to_many add_to_$rel($hash) count ok' );
	203	$cd->set_producers($schema->resultset('Producer')->all);
	204	is( $cd->producers->count(), $prod_before_count+2,
	205	'many_to_many set_$rel(@objs) count ok' );
	206	$cd->set_producers($schema->resultset('Producer')->find(1));
	207	is( $cd->producers->count(), 1, 'many_to_many set_$rel($obj) count ok' );
21c45f7b	208	$cd->set_producers([$schema->resultset('Producer')->all]);
	209	is( $cd->producers->count(), $prod_before_count+2,
	210	'many_to_many set_$rel(\@objs) count ok' );
	211	$cd->set_producers([$schema->resultset('Producer')->find(1)]);
	212	is( $cd->producers->count(), 1, 'many_to_many set_$rel([$obj]) count ok' );
303cf522	213
	214	eval { $cd->remove_from_producers({ fake => 'hash' }); };
	215	like( $@, qr/needs an object/, 'remove_from_$rel($hash) dies correctly' );
	216
	217	eval { $cd->add_to_producers(); };
b3f358b5	218	like( $@, qr/needs an object or hashref/,
b3f358b5	219	'add_to_$rel(undef) dies correctly' );
303cf522	220
3bd6e3e0	221	# many_to_many stresstest
	222	my $twokey = $schema->resultset('TwoKeys')->find(1,1);
	223	my $fourkey = $schema->resultset('FourKeys')->find(1,2,3,4);
	224
	225	is( $twokey->fourkeys->count, 0, 'twokey has no fourkeys' );
	226	$twokey->add_to_fourkeys($fourkey, { autopilot => 'engaged' });
	227	my $got_fourkey = $twokey->fourkeys({ sensors => 'online' })->first;
	228	is( $twokey->fourkeys->count, 1, 'twokey has one fourkey' );
	229	is( $got_fourkey->$_, $fourkey->$_,
	230	'fourkeys row has the correct value for column '.$_ )
	231	for (qw(foo bar hello goodbye sensors));
	232	$twokey->remove_from_fourkeys($fourkey);
	233	is( $twokey->fourkeys->count, 0, 'twokey has no fourkeys' );
b3f358b5	234	is( $twokey->fourkeys_to_twokeys->count, 0,
	235	'twokey has no links to fourkey' );
	236
ac8a5ba4	237	my $undef_artist_cd = $schema->resultset("CD")->new_result({ 'title' => 'badgers', 'year' => 2007 });
ac8a5ba4	238	is($undef_artist_cd->has_column_loaded('artist'), '', 'FK not loaded');
370f2ba2	239	is($undef_artist_cd->search_related('artist')->count, 0, '0=1 search when FK does not exist and object not yet in db');
2c5c07ec	240	eval{
	241	$undef_artist_cd->related_resultset('artist')->new({name => 'foo'});
	242	};
	243	is( $@, '', "Object created on a resultset related to not yet inserted object");
981299aa	244	lives_ok{
	245	$schema->resultset('Artwork')->new_result({})->cd;
	246	} 'undef_on_null_fk does not choke on empty conds';
	247
ac8a5ba4	248	my $def_artist_cd = $schema->resultset("CD")->new_result({ 'title' => 'badgers', 'year' => 2007, artist => undef });
	249	is($def_artist_cd->has_column_loaded('artist'), 1, 'FK loaded');
	250	is($def_artist_cd->search_related('artist')->count, 0, 'closed search on null FK');
3a868fb2	251
5efe4c79	252	# test undirected many-to-many relationship (e.g. "related artists")
f9db5527	253	my $undir_maps = $schema->resultset("Artist")->find(1)->artist_undirected_maps;
5efe4c79	254	is($undir_maps->count, 1, 'found 1 undirected map for artist 1');
5efe4c79	255
f9db5527	256	$undir_maps = $schema->resultset("Artist")->find(2)->artist_undirected_maps;
5efe4c79	257	is($undir_maps->count, 1, 'found 1 undirected map for artist 2');
5efe4c79	258
ad3d2d7c	259	my $mapped_rs = $undir_maps->search_related('mapped_artists');
	260
	261	my @art = $mapped_rs->all;
5efe4c79	262
	263	cmp_ok(@art, '==', 2, "Both artist returned from map");
	264
ad3d2d7c	265	my $searched = $mapped_rs->search({'mapped_artists.artistid' => {'!=', undef}});
	266
	267	cmp_ok($searched->count, '==', 2, "Both artist returned from map after adding another condition");
	268
b8d4bd90	269	# check join through cascaded has_many relationships
	270	$artist = $schema->resultset("Artist")->find(1);
	271	my $trackset = $artist->cds->search_related('tracks');
	272	# LEFT join means we also see the trackless additional album...
	273	cmp_ok($trackset->count, '==', 11, "Correct number of tracks for artist");
ad3d2d7c	274
0f57d214	275	# now see about updating eveything that belongs to artist 2 to artist 3
	276	$artist = $schema->resultset("Artist")->find(2);
	277	my $nartist = $schema->resultset("Artist")->find(3);
	278	cmp_ok($artist->cds->count, '==', 1, "Correct orig #cds for artist");
	279	cmp_ok($nartist->cds->count, '==', 1, "Correct orig #cds for artist");
	280	$artist->cds->update({artist => $nartist->id});
	281	cmp_ok($artist->cds->count, '==', 0, "Correct new #cds for artist");
	282	cmp_ok($nartist->cds->count, '==', 2, "Correct new #cds for artist");
	283
6bf6ba2f	284	# check if is_foreign_key_constraint attr is set
	285	my $rs_normal = $schema->source('Track');
	286	my $relinfo = $rs_normal->relationship_info ('cd');
	287	cmp_ok($relinfo->{attrs}{is_foreign_key_constraint}, '==', 1, "is_foreign_key_constraint defined for belongs_to relationships.");
	288
	289	my $rs_overridden = $schema->source('ForceForeign');
	290	my $relinfo_with_attr = $rs_overridden->relationship_info ('cd_3');
	291	cmp_ok($relinfo_with_attr->{attrs}{is_foreign_key_constraint}, '==', 0, "is_foreign_key_constraint defined for belongs_to relationships with attr.");