use warnings;
use Test::More;
+use Test::Exception;
use lib qw(t/lib);
use DBICTest;
use Data::Dumper;
eval "use DBD::SQLite";
plan $@
? ( skip_all => 'needs DBD::SQLite for testing' )
- : ( tests => 48 );
+ : ( tests => 74 );
}
# figure out if we've got a version of sqlite that is older than 3.2.6, in
is(Dumper($attr), $attr_str, 'Attribute hash untouched after search()');
cmp_ok($rs + 0, '==', 3, 'Correct number of records returned');
+# A search() with prefetch seems to pollute an already joined resultset
+# in a way that offsets future joins (adapted from a test case by Debolaz)
+{
+ my ($cd_rs, $attrs);
+
+ # test a real-life case - rs is obtained by an implicit m2m join
+ $cd_rs = $schema->resultset ('Producer')->first->cds;
+ $attrs = Dumper $cd_rs->{attrs};
+
+ $cd_rs->search ({})->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after a simple search');
+
+ lives_ok (sub {
+ $cd_rs->search ({'artist.artistid' => 1}, { prefetch => 'artist' })->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after search with prefetch');
+ }, 'first prefetching search ok');
+
+ lives_ok (sub {
+ $cd_rs->search ({'artist.artistid' => 1}, { prefetch => 'artist' })->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after another search with prefetch')
+ }, 'second prefetching search ok');
+
+
+ # test a regular rs with an empty seen_join injected - it should still work!
+ $cd_rs = $schema->resultset ('CD');
+ $cd_rs->{attrs}{seen_join} = {};
+ $attrs = Dumper $cd_rs->{attrs};
+
+ $cd_rs->search ({})->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after a simple search');
+
+ lives_ok (sub {
+ $cd_rs->search ({'artist.artistid' => 1}, { prefetch => 'artist' })->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after search with prefetch');
+ }, 'first prefetching search ok');
+
+ lives_ok (sub {
+ $cd_rs->search ({'artist.artistid' => 1}, { prefetch => 'artist' })->all;
+ is (Dumper ($cd_rs->{attrs}), $attrs, 'Resultset attributes preserved after another search with prefetch')
+ }, 'second prefetching search ok');
+}
+
+
my $queries = 0;
$schema->storage->debugcb(sub { $queries++; });
$schema->storage->debug(1);
# test for partial prefetch via columns attr
my $cd = $schema->resultset('CD')->find(1,
{
- columns => [qw/title artist.name/],
+ columns => [qw/title artist artist.name/],
join => { 'artist' => {} }
}
);
$schema->storage->debug(1);
my $tree_like =
- $schema->resultset('TreeLike')->find(4,
+ $schema->resultset('TreeLike')->find(5,
{ join => { parent => { parent => 'parent' } },
prefetch => { parent => { parent => 'parent' } } });
cmp_ok($queries, '==', 1, 'Only one query run');
-$tree_like = $schema->resultset('TreeLike')->search({'me.id' => 1});
+$tree_like = $schema->resultset('TreeLike')->search({'me.id' => 2});
$tree_like = $tree_like->search_related('children')->search_related('children')->search_related('children')->first;
is($tree_like->name, 'quux', 'Tree search_related ok');
$tree_like = $schema->resultset('TreeLike')->search_related('children',
- { 'children.id' => 2, 'children_2.id' => 3 },
+ { 'children.id' => 3, 'children_2.id' => 4 },
{ prefetch => { children => 'children' } }
)->first;
is(eval { $tree_like->children->first->children->first->name }, 'quux',
'Tree search_related with prefetch ok');
$tree_like = eval { $schema->resultset('TreeLike')->search(
- { 'children.id' => 2, 'children_2.id' => 5 },
+ { 'children.id' => 3, 'children_2.id' => 6 },
{ join => [qw/children children/] }
- )->search_related('children', { 'children_4.id' => 6 }, { prefetch => 'children' }
+ )->search_related('children', { 'children_4.id' => 7 }, { prefetch => 'children' }
)->first->children->first; };
is(eval { $tree_like->name }, 'fong', 'Tree with multiple has_many joins ok');
);
is($queries, 0, 'chained search_related after has_many->has_many prefetch ran no queries');
+
+# once the following TODO is complete, remove the 2 warning tests immediately after the TODO block
+# (the TODO block itself contains tests ensuring that the warns are removed)
+TODO: {
+ local $TODO = 'Prefetch of multiple has_many rels at the same level (currently warn to protect the clueless git)';
+
+ #( 1 -> M + M )
+ my $cd_rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' });
+ my $pr_cd_rs = $cd_rs->search ({}, {
+ prefetch => [qw/tracks tags/],
+ });
+
+ my $tracks_rs = $cd_rs->first->tracks;
+ my $tracks_count = $tracks_rs->count;
+
+ my ($pr_tracks_rs, $pr_tracks_count);
+
+ $queries = 0;
+ $schema->storage->debugcb(sub { $queries++ });
+ $schema->storage->debug(1);
+
+ my $o_mm_warn;
+ {
+ local $SIG{__WARN__} = sub { $o_mm_warn = shift };
+ $pr_tracks_rs = $pr_cd_rs->first->tracks;
+ };
+ $pr_tracks_count = $pr_tracks_rs->count;
+
+ ok(! $o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (1 -> M + M)');
+
+ is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query');
+ is($pr_tracks_count, $tracks_count, 'equal count of prefetched relations over several same level has_many\'s (1 -> M + M)');
+
+ for ($pr_tracks_rs, $tracks_rs) {
+ $_->result_class ('DBIx::Class::ResultClass::HashRefInflator');
+ }
+
+ is_deeply ([$pr_tracks_rs->all], [$tracks_rs->all], 'same structure returned with and without prefetch over several same level has_many\'s (1 -> M + M)');
+
+ #( M -> 1 -> M + M )
+ my $note_rs = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' });
+ my $pr_note_rs = $note_rs->search ({}, {
+ prefetch => {
+ cd => [qw/tags tracks/]
+ },
+ });
+
+ my $tags_rs = $note_rs->first->cd->tags;
+ my $tags_count = $tags_rs->count;
+
+ my ($pr_tags_rs, $pr_tags_count);
+
+ $queries = 0;
+ $schema->storage->debugcb(sub { $queries++ });
+ $schema->storage->debug(1);
+
+ my $m_o_mm_warn;
+ {
+ local $SIG{__WARN__} = sub { $m_o_mm_warn = shift };
+ $pr_tags_rs = $pr_note_rs->first->cd->tags;
+ };
+ $pr_tags_count = $pr_tags_rs->count;
+
+ ok(! $m_o_mm_warn, 'no warning on attempt to prefetch several same level has_many\'s (M -> 1 -> M + M)');
+
+ is($queries, 1, 'prefetch one->(has_many,has_many) ran exactly 1 query');
+
+ is($pr_tags_count, $tags_count, 'equal count of prefetched relations over several same level has_many\'s (M -> 1 -> M + M)');
+
+ for ($pr_tags_rs, $tags_rs) {
+ $_->result_class ('DBIx::Class::ResultClass::HashRefInflator');
+ }
+
+ is_deeply ([$pr_tags_rs->all], [$tags_rs->all], 'same structure returned with and without prefetch over several same level has_many\'s (M -> 1 -> M + M)');
+};
+
+# remove this closure once the TODO above is working
+my $w;
+{
+ local $SIG{__WARN__} = sub { $w = shift };
+
+ my $rs = $schema->resultset('CD')->search ({ 'me.title' => 'Forkful of bees' }, { prefetch => [qw/tracks tags/] });
+ for (qw/all count next first/) {
+ undef $w;
+ my @stuff = $rs->search()->$_;
+ like ($w, qr/will currently disrupt both the functionality of .rs->count\(\), and the amount of objects retrievable via .rs->next\(\)/,
+ "warning on ->$_ attempt prefetching several same level has_manys (1 -> M + M)");
+ }
+ my $rs2 = $schema->resultset('LinerNotes')->search ({ notes => 'Buy Whiskey!' }, { prefetch => { cd => [qw/tags tracks/] } });
+ for (qw/all count next first/) {
+ undef $w;
+ my @stuff = $rs2->search()->$_;
+ like ($w, qr/will currently disrupt both the functionality of .rs->count\(\), and the amount of objects retrievable via .rs->next\(\)/,
+ "warning on ->$_ attempt prefetching several same level has_manys (M -> 1 -> M + M)");
+ }
+}
projects / dbsrgits/DBIx-Class.git / blobdiff