X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Fprefetch%2Fmanual.t;h=813534228b7365345d97b9aed930187e7c66940a;hb=1e4f9fb3b8bd1f54518bc2942554099356fa6524;hp=75b117e365a0872702db456ca037424875588749;hpb=69ab63d48af1134c7a6b35ae9005b448a0e37d9e;p=dbsrgits%2FDBIx-Class.git

diff --git a/t/prefetch/manual.t b/t/prefetch/manual.t
index 75b117e..8135342 100644
--- a/t/prefetch/manual.t
+++ b/t/prefetch/manual.t
@@ -2,11 +2,48 @@ use strict;
 use warnings;
 
 use Test::More;
+use Test::Deep;
+use Test::Warn;
 use Test::Exception;
 use lib qw(t/lib);
 use DBICTest;
 
-my $schema = DBICTest->init_schema();
+my $schema = DBICTest->init_schema(no_populate => 1);
+
+$schema->resultset('Artist')->create({ name => 'JMJ', cds => [{
+  title => 'Magnetic Fields',
+  year => 1981,
+  genre => { name => 'electro' },
+  tracks => [
+    { title => 'm1' },
+    { title => 'm2' },
+    { title => 'm3' },
+    { title => 'm4' },
+  ],
+} ] });
+
+$schema->resultset('CD')->create({
+  title => 'Equinoxe',
+  year => 1978,
+  artist => { name => 'JMJ' },
+  genre => { name => 'electro' },
+  tracks => [
+    { title => 'e1' },
+    { title => 'e2' },
+    { title => 'e3' },
+  ],
+  single_track => {
+    title => 'o1',
+    cd => {
+      title => 'Oxygene',
+      year => 1976,
+      artist => { name => 'JMJ' },
+      tracks => [
+        { title => 'o2', position => 2},  # the position should not be here, bug in MC
+      ],
+    },
+  },
+});
 
 my $rs = $schema->resultset ('CD')->search ({}, {
   join => [ 'tracks', { single_track => { cd => { artist => { cds => 'tracks' } } } }  ],
@@ -16,16 +53,325 @@ my $rs = $schema->resultset ('CD')->search ({}, {
     { 'genreid'                                 => 'me.genreid' },            # nullable
     { 'tracks.title'                            => 'tracks.title' },          # non-unique (no me.id)
     { 'single_track.cd.artist.cds.cdid'         => 'cds.cdid' },              # to give uniquiness to ...tracks.title below
-    { 'single_track.cd.artist.cds.artist'       => 'cds.artist' },            # non-unique
+    { 'single_track.cd.artist.artistid'         => 'artist.artistid' },       # uniqufies entire parental chain
+    { 'single_track.cd.artist.cds.year'         => 'cds.year' },              # non-unique
+    { 'single_track.cd.artist.cds.genreid'      => 'cds.genreid' },           # nullable
+    { 'single_track.cd.artist.cds.tracks.title' => 'tracks_2.title' },        # unique when combined with ...cds.cdid above
+    { 'latest_cd'                     => \ "(SELECT MAX(year) FROM cd)" },    # random function
+    { 'title'                                   => 'me.title' },              # uniquiness for me
+    { 'artist'                                  => 'me.artist' },             # uniquiness for me
+  ],
+  order_by => [{ -desc => 'cds.year' }, { -desc => 'me.title'} ],
+});
+
+my $hri_rs = $rs->search({}, { result_class => 'DBIx::Class::ResultClass::HashRefInflator' });
+
+cmp_deeply (
+  [$hri_rs->all],
+  [
+    { artist => 1, genreid => 1, latest_cd => 1981, title => "Equinoxe", year => 1978,
+      single_track => {
+        cd => {
+          artist => { artistid => 1, cds => [
+            { cdid => 1, genreid => 1, year => 1981, tracks => [
+              { title => "m1" },
+              { title => "m2" },
+              { title => "m3" },
+              { title => "m4" },
+            ]},
+            { cdid => 3, genreid => 1, year => 1978, tracks => [
+              { title => "e1" },
+              { title => "e2" },
+              { title => "e3" },
+            ]},
+            { cdid => 2, genreid => undef, year => 1976, tracks => [
+              { title => "o1" },
+              { title => "o2" },
+            ]},
+          ]},
+        },
+      },
+      tracks => [
+        { title => "e1" },
+        { title => "e2" },
+        { title => "e3" },
+      ],
+    },
+    {
+      artist => 1, genreid => undef, latest_cd => 1981, title => "Oxygene", year => 1976, single_track => undef,
+      tracks => [
+        { title => "o1" },
+        { title => "o2" },
+      ],
+    },
+    {
+      artist => 1, genreid => 1, latest_cd => 1981, title => "Magnetic Fields", year => 1981, single_track => undef,
+      tracks => [
+        { title => "m1" },
+        { title => "m2" },
+        { title => "m3" },
+        { title => "m4" },
+      ],
+    },
+  ],
+  'W00T, manual prefetch with collapse works'
+);
+
+TODO: {
+  my ($row) = $rs->all;
+  local $TODO = 'Something is wrong with filter type rels, they throw on incomplete objects >.<';
+
+  lives_ok {
+    cmp_deeply (
+      { $row->single_track->get_columns },
+      {},
+      'empty intermediate object ok',
+    )
+  } 'no exception';
+}
+
+TODO: {
+local $TODO = 'this does not work at all, need to promote rsattrs to an object on its own';
+# make sure has_many column redirection does not do weird stuff when collapse is requested
+for my $pref_args (
+  { prefetch => 'cds'},
+  { collapse => 1 }
+) {
+  for my $col_and_join_args (
+    { '+columns' => { 'cd_title' => 'cds_2.title' }, join => [ 'cds', 'cds' ] },
+    { '+columns' => { 'cd_title' => 'cds.title' }, join => 'cds', }
+  ) {
+
+    my $weird_rs = $schema->resultset('Artist')->search({}, {
+      %$col_and_join_args, %$pref_args,
+    });
+
+    for (qw/next all first/) {
+      throws_ok { $weird_rs->$_ } qr/not yet determined exception text/;
+    }
+  }
+}
+}
+
+# multi-has_many with underdefined root, with rather random order
+$rs = $schema->resultset ('CD')->search ({}, {
+  join => [ 'tracks', { single_track => { cd => { artist => { cds => 'tracks' } } } }  ],
+  collapse => 1,
+  columns => [
+    { 'single_track.trackid'                    => 'single_track.trackid' },  # definitive link to root from 1:1:1:1:M:M chain
+    { 'year'                                    => 'me.year' },               # non-unique
+    { 'tracks.cd'                               => 'tracks.cd' },             # \ together both uniqueness for second multirel
+    { 'tracks.title'                            => 'tracks.title' },          # / and definitive link back to root
+    { 'single_track.cd.artist.cds.cdid'         => 'cds.cdid' },              # to give uniquiness to ...tracks.title below
     { 'single_track.cd.artist.cds.year'         => 'cds.year' },              # non-unique
+    { 'single_track.cd.artist.artistid'         => 'artist.artistid' },       # uniqufies entire parental chain
     { 'single_track.cd.artist.cds.genreid'      => 'cds.genreid' },           # nullable
     { 'single_track.cd.artist.cds.tracks.title' => 'tracks_2.title' },        # unique when combined with ...cds.cdid above
-    { 'latest_cd'                               => { max => 'cds.year' } },   # random function
   ],
+});
+
+for (1..3) {
+  $rs->create({ artist => 1, year => 1977, title => "fuzzy_$_" });
+}
+
+my $rs_random = $rs->search({}, { order_by => \ 'RANDOM()' });
+is ($rs_random->count, 6, 'row count matches');
+
+if ($ENV{TEST_VERBOSE}) {
+ my @lines = (
+    [ "What are we actually trying to collapse (Select/As, tests below will see a *DIFFERENT* random order):" ],
+    [ map { my $s = $_; $s =~ s/single_track\./sngl_tr./; $s } @{$rs_random->{_attrs}{select} } ],
+    $rs_random->{_attrs}{as},
+    [ "-" x 159 ],
+    $rs_random->cursor->all,
+  );
+
+  diag join ' # ', map { sprintf '% 15s', (defined $_ ? $_ : 'NULL') } @$_
+    for @lines;
+}
+
+{
+  my $queries = 0;
+  $schema->storage->debugcb(sub { $queries++ });
+  my $orig_debug = $schema->storage->debug;
+  $schema->storage->debug (1);
+
+  for my $use_next (0, 1) {
+    my @random_cds;
+    if ($use_next) {
+      warnings_exist {
+        while (my $o = $rs_random->next) {
+          push @random_cds, $o;
+        }
+      } qr/performed an eager cursor slurp underneath/,
+      'Warned on auto-eager cursor';
+    }
+    else {
+      @random_cds = $rs_random->all;
+    }
+
+    is (@random_cds, 6, 'object count matches');
+
+    for my $cd (@random_cds) {
+      if ($cd->year == 1977) {
+        is( scalar $cd->tracks, 0, 'no tracks on 1977 cd' );
+        is( $cd->single_track, undef, 'no single_track on 1977 cd' );
+      }
+      elsif ($cd->year == 1976) {
+        is( scalar $cd->tracks, 2, 'Two tracks on 1976 cd' );
+        like( $_->title, qr/^o\d/, "correct title" )
+          for $cd->tracks;
+        is( $cd->single_track, undef, 'no single_track on 1976 cd' );
+      }
+      elsif ($cd->year == 1981) {
+        is( scalar $cd->tracks, 4, 'Four tracks on 1981 cd' );
+        like( $_->title, qr/^m\d/, "correct title" )
+          for $cd->tracks;
+        is( $cd->single_track, undef, 'no single_track on 1981 cd' );
+      }
+      elsif ($cd->year == 1978) {
+        is( scalar $cd->tracks, 3, 'Three tracks on 1978 cd' );
+        like( $_->title, qr/^e\d/, "correct title" )
+          for $cd->tracks;
+        ok( defined $cd->single_track, 'single track prefetched on 1987 cd' );
+        is( $cd->single_track->cd->artist->id, 1, 'Single_track->cd->artist prefetched on 1978 cd' );
+        is( scalar $cd->single_track->cd->artist->cds, 6, '6 cds prefetched on artist' );
+      }
+    }
+  }
+
+  $schema->storage->debugcb(undef);
+  $schema->storage->debug($orig_debug);
+  is ($queries, 2, "Only two queries for two prefetch calls total");
+}
+
+# can't cmp_deeply a random set - need *some* order
+my $ord_rs = $rs->search({}, {
+  order_by => [ 'tracks_2.title', 'tracks.title', 'cds.cdid', \ 'RANDOM()' ],
+  result_class => 'DBIx::Class::ResultClass::HashRefInflator',
+});
+my @hris_all = sort { $a->{year} cmp $b->{year} } $ord_rs->all;
+is (@hris_all, 6, 'hri count matches' );
+
+my $iter_rs = $rs->search({}, {
+  order_by => [ 'me.year', 'me.cdid', 'tracks_2.title', 'tracks.title', 'cds.cdid', \ 'RANDOM()' ],
   result_class => 'DBIx::Class::ResultClass::HashRefInflator',
 });
+my @hris_iter;
+while (my $r = $iter_rs->next) {
+  push @hris_iter, $r;
+}
+
+cmp_deeply(
+  \@hris_iter,
+  \@hris_all,
+  'Iteration works correctly',
+);
+
+my @hri_contents = (
+  { year => 1976, single_track => undef, tracks => [
+    { cd => 2, title => "o1" },
+    { cd => 2, title => "o2" },
+  ]},
+  { year => 1977, single_track => undef, tracks => [] },
+  { year => 1977, single_track => undef, tracks => [] },
+  { year => 1977, single_track => undef, tracks => [] },
+  {
+    year => 1978,
+    single_track => {
+      trackid => 6,
+      cd => {
+        artist => {
+          artistid => 1, cds => [
+            { cdid => 4, genreid => undef, year => 1977, tracks => [] },
+            { cdid => 5, genreid => undef, year => 1977, tracks => [] },
+            { cdid => 6, genreid => undef, year => 1977, tracks => [] },
+            { cdid => 3, genreid => 1, year => 1978, tracks => [
+              { title => "e1" },
+              { title => "e2" },
+              { title => "e3" },
+            ]},
+            { cdid => 1, genreid => 1, year => 1981, tracks => [
+              { title => "m1" },
+              { title => "m2" },
+              { title => "m3" },
+              { title => "m4" },
+            ]},
+            { cdid => 2, genreid => undef, year => 1976, tracks => [
+              { title => "o1" },
+              { title => "o2" },
+            ]},
+          ]
+        },
+      },
+    },
+    tracks => [
+      { cd => 3, title => "e1" },
+      { cd => 3, title => "e2" },
+      { cd => 3, title => "e3" },
+    ],
+  },
+  { year => 1981, single_track => undef, tracks => [
+    { cd => 1, title => "m1" },
+    { cd => 1, title => "m2" },
+    { cd => 1, title => "m3" },
+    { cd => 1, title => "m4" },
+  ]},
+);
+
+cmp_deeply (\@hris_all, \@hri_contents, 'W00T, multi-has_many manual underdefined root prefetch with collapse works');
+
+cmp_deeply(
+  $rs->search({}, {
+    order_by => [ 'me.year', 'tracks_2.title', 'tracks.title', 'cds.cdid', { -desc => 'name' } ],
+    rows => 4,
+    offset => 2,
+  })->all_hri,
+  [ @hri_contents[2..5] ],
+  'multi-has_many prefetch with limit works too',
+);
+
+# left-ordered real iterator
+$rs = $rs->search({}, { order_by => [ 'me.year', 'me.cdid', \ 'RANDOM()' ] });
+my @objs_iter;
+while (my $r = $rs->next) {
+  push @objs_iter, $r;
+}
+
+for my $i (0 .. $#objs_iter) {
+  is ($objs_iter[$i]->year, $hris_all[$i]{year}, "Expected year on object $i" );
+  is (
+    (defined $objs_iter[$i]->single_track),
+    (defined $hris_all[$i]{single_track}),
+    "Expected single relation on object $i"
+  );
+}
+
+$rs = $schema->resultset('Artist')->search({}, {
+  join => 'cds',
+  columns => ['cds.title', 'cds.artist' ],
+  collapse => 1,
+  order_by => [qw( me.name cds.title )],
+});
 
-use Data::Dumper::Concise;
-die Dumper [$rs->all];
+$rs->create({ name => "${_}_cdless" })
+  for (qw( Z A ));
 
+cmp_deeply (
+  $rs->all_hri,
+  [
+    { cds => [] },
+    { cds => [
+      { artist => 1, title => "Equinoxe" },
+      { artist => 1, title => "Magnetic Fields" },
+      { artist => 1, title => "Oxygene" },
+      { artist => 1, title => "fuzzy_1" },
+      { artist => 1, title => "fuzzy_2" },
+      { artist => 1, title => "fuzzy_3" },
+    ] },
+    { cds => [] },
+  ],
+  'Expected HRI of 1:M with empty root selection',
+);
 
+done_testing;