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1 | use strict; |
2 | use warnings; |
3 | |
4 | use Test::More; |
5 | use Test::Exception; |
6 | use lib qw(t/lib); |
7 | use DBICTest; |
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8 | use IO::File; |
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9 | |
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10 | my $schema = DBICTest->init_schema(); |
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11 | my $sdebug = $schema->storage->debug; |
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12 | |
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13 | # once the following TODO is complete, remove the 2 warning tests immediately |
14 | # after the TODO block |
15 | # (the TODO block itself contains tests ensuring that the warns are removed) |
16 | TODO: { |
17 | local $TODO = 'Prefetch of multiple has_many rels at the same level (currently warn to protect the clueless git)'; |
18 | |
19 | #( 1 -> M + M ) |
20 | my $cd_rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }); |
21 | my $pr_cd_rs = $cd_rs->search ({}, { |
22 | prefetch => [qw/tracks tags/], |
23 | }); |
24 | |
25 | my $tracks_rs = $cd_rs->first->tracks; |
26 | my $tracks_count = $tracks_rs->count; |
27 | |
28 | my ($pr_tracks_rs, $pr_tracks_count); |
29 | |
30 | my $queries = 0; |
31 | $schema->storage->debugcb(sub { $queries++ }); |
32 | $schema->storage->debug(1); |
33 | |
34 | my $o_mm_warn; |
35 | { |
36 | local $SIG{__WARN__} = sub { $o_mm_warn = shift }; |
37 | $pr_tracks_rs = $pr_cd_rs->first->tracks; |
38 | }; |
39 | $pr_tracks_count = $pr_tracks_rs->count; |
40 | |
41 | ok(! $o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)'); |
42 | |
43 | is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query'); |
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44 | $schema->storage->debugcb (undef); |
45 | $schema->storage->debug ($sdebug); |
46 | |
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47 | is($pr_tracks_count, $tracks_count, 'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)'); |
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48 | is ($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)'); |
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49 | |
50 | #( M -> 1 -> M + M ) |
51 | my $note_rs = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }); |
52 | my $pr_note_rs = $note_rs->search ({}, { |
53 | prefetch => { |
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54 | cd => [qw/tracks tags/] |
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55 | }, |
56 | }); |
57 | |
58 | my $tags_rs = $note_rs->first->cd->tags; |
59 | my $tags_count = $tags_rs->count; |
60 | |
61 | my ($pr_tags_rs, $pr_tags_count); |
62 | |
63 | $queries = 0; |
64 | $schema->storage->debugcb(sub { $queries++ }); |
65 | $schema->storage->debug(1); |
66 | |
67 | my $m_o_mm_warn; |
68 | { |
69 | local $SIG{__WARN__} = sub { $m_o_mm_warn = shift }; |
70 | $pr_tags_rs = $pr_note_rs->first->cd->tags; |
71 | }; |
72 | $pr_tags_count = $pr_tags_rs->count; |
73 | |
74 | ok(! $m_o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)'); |
75 | |
76 | is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query'); |
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77 | $schema->storage->debugcb (undef); |
78 | $schema->storage->debug ($sdebug); |
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79 | |
80 | is($pr_tags_count, $tags_count, 'equal count of prefetched relations over several same level has_many\'s (M -> 1 -> M + M)'); |
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81 | is($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)'); |
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82 | } |
83 | |
84 | # remove this closure once the TODO above is working |
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85 | { |
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86 | my $warn_re = qr/will explode the number of row objects retrievable via/; |
87 | |
88 | my (@w, @dummy); |
89 | local $SIG{__WARN__} = sub { $_[0] =~ $warn_re ? push @w, @_ : warn @_ }; |
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90 | |
91 | my $rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }, { prefetch => [qw/tracks tags/] }); |
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92 | @w = (); |
93 | @dummy = $rs->first; |
94 | is (@w, 1, 'warning on attempt prefetching several same level has_manys (1 -> M + M)'); |
95 | |
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96 | my $rs2 = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }, { prefetch => { cd => [qw/tags tracks/] } }); |
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97 | @w = (); |
98 | @dummy = $rs2->first; |
99 | is (@w, 1, 'warning on attempt prefetching several same level has_manys (M -> 1 -> M + M)'); |
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100 | } |
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101 | |
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102 | done_testing; |