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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 | |
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8 | my $schema = DBICTest->init_schema(); |
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9 | my $sdebug = $schema->storage->debug; |
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10 | |
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11 | #( 1 -> M + M ) |
12 | my $cd_rs = $schema->resultset('CD')->search( { 'me.title' => 'Forkful of bees' } ); |
13 | my $pr_cd_rs = $cd_rs->search( {}, { prefetch => [qw/tracks tags/], } ); |
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14 | |
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15 | my $tracks_rs = $cd_rs->first->tracks; |
16 | my $tracks_count = $tracks_rs->count; |
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17 | |
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18 | my ( $pr_tracks_rs, $pr_tracks_count ); |
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19 | |
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20 | my $queries = 0; |
21 | $schema->storage->debugcb( sub { $queries++ } ); |
22 | $schema->storage->debug(1); |
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23 | |
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24 | my $o_mm_warn; |
25 | { |
26 | local $SIG{__WARN__} = sub { $o_mm_warn = shift }; |
27 | $pr_tracks_rs = $pr_cd_rs->first->tracks; |
28 | }; |
29 | $pr_tracks_count = $pr_tracks_rs->count; |
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30 | |
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31 | ok( !$o_mm_warn, |
32 | 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)' |
33 | ); |
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34 | |
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35 | is( $queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query' ); |
36 | $schema->storage->debugcb(undef); |
37 | $schema->storage->debug($sdebug); |
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38 | |
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39 | is( $pr_tracks_count, $tracks_count, |
40 | 'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)' |
41 | ); |
42 | is( $pr_tracks_rs->all, $tracks_rs->all, |
43 | 'equal amount of objects returned with and without prefetch over several same level has_many\'s (1 -> M + M)' |
44 | ); |
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45 | |
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46 | #( M -> 1 -> M + M ) |
47 | my $note_rs = |
48 | $schema->resultset('LinerNotes')->search( { notes => 'Buy Whiskey!' } ); |
49 | my $pr_note_rs = |
50 | $note_rs->search( {}, { prefetch => { cd => [qw/tracks tags/] }, } ); |
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51 | |
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52 | my $tags_rs = $note_rs->first->cd->tags; |
53 | my $tags_count = $tags_rs->count; |
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54 | |
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55 | my ( $pr_tags_rs, $pr_tags_count ); |
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56 | |
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57 | $queries = 0; |
58 | $schema->storage->debugcb( sub { $queries++ } ); |
59 | $schema->storage->debug(1); |
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60 | |
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61 | my $m_o_mm_warn; |
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62 | { |
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63 | local $SIG{__WARN__} = sub { $m_o_mm_warn = shift }; |
64 | $pr_tags_rs = $pr_note_rs->first->cd->tags; |
65 | }; |
66 | $pr_tags_count = $pr_tags_rs->count; |
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67 | |
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68 | ok( !$m_o_mm_warn, |
69 | 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)' |
70 | ); |
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71 | |
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72 | is( $queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query' ); |
73 | $schema->storage->debugcb(undef); |
74 | $schema->storage->debug($sdebug); |
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75 | |
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76 | is( $pr_tags_count, $tags_count, |
77 | 'equal count of prefetched relations over several same level has_many\'s (M -> 1 -> M + M)' |
78 | ); |
79 | is( $pr_tags_rs->all, $tags_rs->all, |
80 | 'equal amount of objects with and without prefetch over several same level has_many\'s (M -> 1 -> M + M)' |
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81 | ); |
82 | |
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83 | done_testing; |