bump CAG dep
[dbsrgits/DBIx-Class.git] / t / prefetch / standard.t
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96e7f9ec 1use strict;
8124a75c 2use warnings;
96e7f9ec 3
4use Test::More;
1b374bf3 5use Test::Exception;
96e7f9ec 6use lib qw(t/lib);
7use DBICTest;
a2287768 8use IO::File;
96e7f9ec 9
10my $schema = DBICTest->init_schema();
96e7f9ec 11my $orig_debug = $schema->storage->debug;
12
8bcbe239 13plan tests => 44;
96e7f9ec 14
96e7f9ec 15my $queries = 0;
16$schema->storage->debugcb(sub { $queries++; });
17$schema->storage->debug(1);
18
e9bd1473 19my $search = { 'artist.name' => 'Caterwauler McCrae' };
20my $attr = { prefetch => [ qw/artist liner_notes/ ],
21 order_by => 'me.cdid' };
e9bd1473 22
23my $rs = $schema->resultset("CD")->search($search, $attr);
96e7f9ec 24my @cd = $rs->all;
25
26is($cd[0]->title, 'Spoonful of bees', 'First record returned ok');
27
28ok(!defined $cd[0]->liner_notes, 'No prefetch for NULL LEFT join');
29
30is($cd[1]->{_relationship_data}{liner_notes}->notes, 'Buy Whiskey!', 'Prefetch for present LEFT JOIN');
31
32is(ref $cd[1]->liner_notes, 'DBICTest::LinerNotes', 'Prefetch returns correct class');
33
34is($cd[2]->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'Prefetch on parent object ok');
35
36is($queries, 1, 'prefetch ran only 1 select statement');
37
38$schema->storage->debug($orig_debug);
39$schema->storage->debugobj->callback(undef);
40
41# test for partial prefetch via columns attr
42my $cd = $schema->resultset('CD')->find(1,
43 {
370f2ba2 44 columns => [qw/title artist artist.name/],
96e7f9ec 45 join => { 'artist' => {} }
46 }
47);
48ok(eval { $cd->artist->name eq 'Caterwauler McCrae' }, 'single related column prefetched');
49
50# start test for nested prefetch SELECT count
51$queries = 0;
52$schema->storage->debugcb(sub { $queries++ });
53$schema->storage->debug(1);
54
55$rs = $schema->resultset('Tag')->search(
56 {},
57 {
58 prefetch => { cd => 'artist' }
59 }
60);
61
62my $tag = $rs->first;
63
64is( $tag->cd->title, 'Spoonful of bees', 'step 1 ok for nested prefetch' );
65
66is( $tag->cd->artist->name, 'Caterwauler McCrae', 'step 2 ok for nested prefetch');
67
68# count the SELECTs
69#$selects++ if /SELECT(?!.*WHERE 1=0.*)/;
70is($queries, 1, 'nested prefetch ran exactly 1 select statement (excluding column_info)');
71
72$queries = 0;
73
74is($tag->search_related('cd')->search_related('artist')->first->name,
75 'Caterwauler McCrae',
76 'chained belongs_to->belongs_to search_related ok');
77
78is($queries, 0, 'chained search_related after belontgs_to->belongs_to prefetch ran no queries');
79
80$queries = 0;
81
82$cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });
83
84is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find');
85
86is($queries, 1, 'find with prefetch ran exactly 1 select statement (excluding column_info)');
87
88$queries = 0;
89
90$schema->storage->debugcb(sub { $queries++; });
91
92$cd = $schema->resultset('CD')->find(1, { prefetch => { cd_to_producer => 'producer' } });
93
94is($cd->producers->first->name, 'Matt S Trout', 'many_to_many accessor ok');
95
96is($queries, 1, 'many_to_many accessor with nested prefetch ran exactly 1 query');
97
98$queries = 0;
99
100my $producers = $cd->search_related('cd_to_producer')->search_related('producer');
101
102is($producers->first->name, 'Matt S Trout', 'chained many_to_many search_related ok');
103
104is($queries, 0, 'chained search_related after many_to_many prefetch ran no queries');
105
106$schema->storage->debug($orig_debug);
107$schema->storage->debugobj->callback(undef);
108
109$rs = $schema->resultset('Tag')->search(
110 {},
111 {
112 join => { cd => 'artist' },
113 prefetch => { cd => 'artist' }
114 }
115);
116
117cmp_ok( $rs->count, '>=', 0, 'nested prefetch does not duplicate joins' );
118
119my ($artist) = $schema->resultset("Artist")->search({ 'cds.year' => 2001 },
120 { order_by => 'artistid DESC', join => 'cds' });
121
122is($artist->name, 'Random Boy Band', "Join search by object ok");
123
124my @cds = $schema->resultset("CD")->search({ 'liner_notes.notes' => 'Buy Merch!' },
125 { join => 'liner_notes' });
126
127cmp_ok(scalar @cds, '==', 1, "Single CD retrieved via might_have");
128
129is($cds[0]->title, "Generic Manufactured Singles", "Correct CD retrieved");
130
131my @artists = $schema->resultset("Artist")->search({ 'tags.tag' => 'Shiny' },
132 { join => { 'cds' => 'tags' } });
133
134cmp_ok( @artists, '==', 2, "two-join search ok" );
135
136$rs = $schema->resultset("CD")->search(
137 {},
138 { group_by => [qw/ title me.cdid /] }
139);
140
1cc3ce1e 141cmp_ok( $rs->count, '==', 5, "count() ok after group_by on main pk" );
96e7f9ec 142
143cmp_ok( scalar $rs->all, '==', 5, "all() returns same count as count() after group_by on main pk" );
144
145$rs = $schema->resultset("CD")->search(
146 {},
147 { join => [qw/ artist /], group_by => [qw/ artist.name /] }
148);
149
1cc3ce1e 150cmp_ok( $rs->count, '==', 3, "count() ok after group_by on related column" );
96e7f9ec 151
152$rs = $schema->resultset("Artist")->search(
153 {},
154 { join => [qw/ cds /], group_by => [qw/ me.name /], having =>{ 'MAX(cds.cdid)'=> \'< 5' } }
155);
156
157cmp_ok( $rs->all, '==', 2, "results ok after group_by on related column with a having" );
158
159$rs = $rs->search( undef, { having =>{ 'count(*)'=> \'> 2' }});
160
161cmp_ok( $rs->all, '==', 1, "count() ok after group_by on related column with a having" );
162
163$rs = $schema->resultset("Artist")->search(
164 { 'cds.title' => 'Spoonful of bees',
165 'cds_2.title' => 'Forkful of bees' },
166 { join => [ 'cds', 'cds' ] });
167
1cc3ce1e 168cmp_ok($rs->count, '==', 1, "single artist returned from multi-join");
96e7f9ec 169
170is($rs->next->name, 'Caterwauler McCrae', "Correct artist returned");
171
172$cd = $schema->resultset('Artist')->first->create_related('cds',
173 {
174 title => 'Unproduced Single',
175 year => 2007
176});
177
178my $left_join = $schema->resultset('CD')->search(
179 { 'me.cdid' => $cd->cdid },
180 { prefetch => { cd_to_producer => 'producer' } }
181);
182
183cmp_ok($left_join, '==', 1, 'prefetch with no join record present');
184
185$queries = 0;
186$schema->storage->debugcb(sub { $queries++ });
187$schema->storage->debug(1);
188
189my $tree_like =
8871d4ad 190 $schema->resultset('TreeLike')->find(5,
96e7f9ec 191 { join => { parent => { parent => 'parent' } },
192 prefetch => { parent => { parent => 'parent' } } });
193
194is($tree_like->name, 'quux', 'Bottom of tree ok');
195$tree_like = $tree_like->parent;
196is($tree_like->name, 'baz', 'First level up ok');
197$tree_like = $tree_like->parent;
198is($tree_like->name, 'bar', 'Second level up ok');
199$tree_like = $tree_like->parent;
200is($tree_like->name, 'foo', 'Third level up ok');
201
202$schema->storage->debug($orig_debug);
203$schema->storage->debugobj->callback(undef);
204
205cmp_ok($queries, '==', 1, 'Only one query run');
206
8871d4ad 207$tree_like = $schema->resultset('TreeLike')->search({'me.id' => 2});
96e7f9ec 208$tree_like = $tree_like->search_related('children')->search_related('children')->search_related('children')->first;
209is($tree_like->name, 'quux', 'Tree search_related ok');
210
211$tree_like = $schema->resultset('TreeLike')->search_related('children',
8871d4ad 212 { 'children.id' => 3, 'children_2.id' => 4 },
96e7f9ec 213 { prefetch => { children => 'children' } }
214 )->first;
215is(eval { $tree_like->children->first->children->first->name }, 'quux',
216 'Tree search_related with prefetch ok');
217
218$tree_like = eval { $schema->resultset('TreeLike')->search(
8871d4ad 219 { 'children.id' => 3, 'children_2.id' => 6 },
8124a75c 220 { join => [qw/children children children/] }
8871d4ad 221 )->search_related('children', { 'children_4.id' => 7 }, { prefetch => 'children' }
96e7f9ec 222 )->first->children->first; };
223is(eval { $tree_like->name }, 'fong', 'Tree with multiple has_many joins ok');
224
96e7f9ec 225$rs = $schema->resultset('Artist');
226$rs->create({ artistid => 4, name => 'Unknown singer-songwriter' });
227$rs->create({ artistid => 5, name => 'Emo 4ever' });
228@artists = $rs->search(undef, { prefetch => 'cds', order_by => 'artistid' });
229is(scalar @artists, 5, 'has_many prefetch with adjacent empty rows ok');
230
231# -------------
232#
233# Tests for multilevel has_many prefetch
234
235# artist resultsets - with and without prefetch
236my $art_rs = $schema->resultset('Artist');
237my $art_rs_pr = $art_rs->search(
238 {},
239 {
240 join => [ { cds => ['tracks'] } ],
241 prefetch => [ { cds => ['tracks'] } ],
242 cache => 1 # last test needs this
243 }
244);
245
246# This test does the same operation twice - once on a
247# set of items fetched from the db with no prefetch of has_many rels
248# The second prefetches 2 levels of has_many
249# We check things are the same by comparing the name or title
250# we build everything into a hash structure and compare the one
251# from each rs to see what differs
252
253sub make_hash_struc {
254 my $rs = shift;
255
256 my $struc = {};
257 foreach my $art ( $rs->all ) {
258 foreach my $cd ( $art->cds ) {
259 foreach my $track ( $cd->tracks ) {
260 $struc->{ $art->name }{ $cd->title }{ $track->title }++;
261 }
262 }
263 }
264 return $struc;
265}
266
267$queries = 0;
268$schema->storage->debugcb(sub { $queries++ });
269$schema->storage->debug(1);
270
271my $prefetch_result = make_hash_struc($art_rs_pr);
272
273is($queries, 1, 'nested prefetch across has_many->has_many ran exactly 1 query');
274
275my $nonpre_result = make_hash_struc($art_rs);
276
277is_deeply( $prefetch_result, $nonpre_result,
278 'Compare 2 level prefetch result to non-prefetch result' );
279
280$queries = 0;
281
282is($art_rs_pr->search_related('cds')->search_related('tracks')->first->title,
283 'Fowlin',
284 'chained has_many->has_many search_related ok'
285 );
286
287is($queries, 0, 'chained search_related after has_many->has_many prefetch ran no queries');
b2df8400 288
a2287768 289$schema->storage->debug($orig_debug);
290$schema->storage->debugobj->callback(undef);