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1 | use strict; |
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2 | use warnings; |
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3 | |
4 | use Test::More; |
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5 | use lib qw(t/lib); |
6 | use DBICTest; |
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7 | use IO::File; |
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8 | |
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9 | my $schema = DBICTest->init_schema(); |
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10 | my $sdebug = $schema->storage->debug; |
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11 | |
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12 | # once the following TODO is complete, remove the 2 warning tests immediately |
13 | # after the TODO block |
14 | # (the TODO block itself contains tests ensuring that the warns are removed) |
15 | TODO: { |
16 | local $TODO = 'Prefetch of multiple has_many rels at the same level (currently warn to protect the clueless git)'; |
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17 | |
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18 | #( 1 -> M + M ) |
19 | my $cd_rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }); |
20 | my $pr_cd_rs = $cd_rs->search ({}, { |
21 | prefetch => [qw/tracks tags/], |
22 | }); |
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23 | |
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24 | my $tracks_rs = $cd_rs->first->tracks; |
25 | my $tracks_count = $tracks_rs->count; |
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26 | |
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27 | my ($pr_tracks_rs, $pr_tracks_count); |
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28 | |
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29 | my $queries = 0; |
30 | $schema->storage->debugcb(sub { $queries++ }); |
31 | $schema->storage->debug(1); |
32 | |
33 | my $o_mm_warn; |
34 | { |
35 | local $SIG{__WARN__} = sub { $o_mm_warn = shift }; |
36 | $pr_tracks_rs = $pr_cd_rs->first->tracks; |
37 | }; |
38 | $pr_tracks_count = $pr_tracks_rs->count; |
39 | |
40 | ok(! $o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)'); |
41 | |
42 | is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query'); |
43 | $schema->storage->debugcb (undef); |
44 | $schema->storage->debug ($sdebug); |
45 | |
46 | is($pr_tracks_count, $tracks_count, 'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)'); |
47 | is ($pr_tracks_rs->all, $tracks_rs->all, 'equal amount of objects returned with and without prefetch over several same level has_many\'s (1 -> M + M)'); |
48 | |
49 | #( M -> 1 -> M + M ) |
50 | my $note_rs = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }); |
51 | my $pr_note_rs = $note_rs->search ({}, { |
52 | prefetch => { |
53 | cd => [qw/tracks tags/] |
54 | }, |
55 | }); |
56 | |
57 | my $tags_rs = $note_rs->first->cd->tags; |
58 | my $tags_count = $tags_rs->count; |
59 | |
60 | my ($pr_tags_rs, $pr_tags_count); |
61 | |
62 | $queries = 0; |
63 | $schema->storage->debugcb(sub { $queries++ }); |
64 | $schema->storage->debug(1); |
65 | |
66 | my $m_o_mm_warn; |
67 | { |
68 | local $SIG{__WARN__} = sub { $m_o_mm_warn = shift }; |
69 | $pr_tags_rs = $pr_note_rs->first->cd->tags; |
70 | }; |
71 | $pr_tags_count = $pr_tags_rs->count; |
72 | |
73 | ok(! $m_o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)'); |
74 | |
75 | is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query'); |
76 | $schema->storage->debugcb (undef); |
77 | $schema->storage->debug ($sdebug); |
78 | |
79 | is($pr_tags_count, $tags_count, 'equal count of prefetched relations over several same level has_many\'s (M -> 1 -> M + M)'); |
80 | is($pr_tags_rs->all, $tags_rs->all, 'equal amount of objects with and without prefetch over several same level has_many\'s (M -> 1 -> M + M)'); |
81 | } |
82 | |
83 | # remove this closure once the TODO above is working |
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84 | { |
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85 | my $warn_re = qr/will explode the number of row objects retrievable via/; |
86 | |
87 | my (@w, @dummy); |
88 | local $SIG{__WARN__} = sub { $_[0] =~ $warn_re ? push @w, @_ : warn @_ }; |
89 | |
90 | my $rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }, { prefetch => [qw/tracks tags/] }); |
91 | @w = (); |
92 | @dummy = $rs->first; |
93 | is (@w, 1, 'warning on attempt prefetching several same level has_manys (1 -> M + M)'); |
94 | |
95 | my $rs2 = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }, { prefetch => { cd => [qw/tags tracks/] } }); |
96 | @w = (); |
97 | @dummy = $rs2->first; |
98 | is (@w, 1, 'warning on attempt prefetching several same level has_manys (M -> 1 -> M + M)'); |
99 | } |
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100 | |
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101 | done_testing; |