X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2F88result_set_column.t;h=9a04bd16d6d7e8db2daed46e274098b90e258ac2;hb=cc8ffd7bfc8a375545f35c8be3c224cf365ee7e7;hp=6eb9892c7bba54407b2de66dcf3c72ded58be77a;hpb=eb58c082cf9c35760d8fc199483d38c1d926b2e4;p=dbsrgits%2FDBIx-Class.git

diff --git a/t/88result_set_column.t b/t/88result_set_column.t
index 6eb9892..9a04bd1 100644
--- a/t/88result_set_column.t
+++ b/t/88result_set_column.t
@@ -5,8 +5,7 @@ use Test::More;
 use Test::Warn;
 use Test::Exception;
 use lib qw(t/lib);
-use DBICTest;
-use DBIC::SqlMakerTest;
+use DBICTest ':DiffSQL';
 
 my $schema = DBICTest->init_schema();
 
@@ -217,7 +216,7 @@ is_same_sql_bind (
   'Correct SQL for prefetch/order_by/group_by'
 );
 
-# test aggregate on a function
+# test aggregate on a function (create an extra track on one cd)
 {
   my $tr_rs = $schema->resultset("Track");
   $tr_rs->create({ cd => 2, title => 'dealbreaker' });
@@ -242,4 +241,87 @@ is_same_sql_bind (
   );
 }
 
+# test exotic scenarious (create a track-less cd)
+# "How many CDs (not tracks) have been released per year where a given CD has at least one track and the artist isn't evancarroll?"
+{
+
+  $schema->resultset('CD')->create({ artist => 1, title => 'dealbroker no tracks', year => 2001 });
+
+  my $yp1 = \[ 'year + ?', 1 ];
+
+  my $rs = $schema->resultset ('CD')->search (
+    { 'artist.name' => { '!=', 'evancarrol' }, 'tracks.trackid' => { '!=', undef } },
+    {
+      order_by => 'me.year',
+      join => [qw(artist tracks)],
+      columns => [
+        'year',
+        { cnt => { count => 'me.cdid' } },
+        {  year_plus_one => $yp1 },
+      ],
+    },
+  );
+
+  my $rstypes = {
+    'explicitly grouped' => $rs->search_rs({}, { group_by => [ 'year', $yp1 ] } ),
+    'implicitly grouped' => $rs->search_rs({}, { distinct => 1 }),
+  };
+
+  for my $type (keys %$rstypes) {
+    is ($rstypes->{$type}->count, 4, "correct cd count with $type column");
+
+    is_deeply (
+      [ $rstypes->{$type}->get_column ('year')->all ],
+      [qw(1997 1998 1999 2001)],
+      "Getting $type column works",
+    );
+  }
+
+  # Why do we test this - we want to make sure that the selector *will* actually make
+  # it to the group_by as per the distinct => 1 contract. Before 0.08251 this situation
+  # would silently drop the group_by entirely, likely ending up with nonsensival results
+  # With the current behavior the user will at least get a nice fat exception from the
+  # RDBMS (or maybe the RDBMS will even decide to handle the situation sensibly...)
+  for (
+    [ cnt => 'COUNT( me.cdid )' ],
+    [ year_plus_one => 'year + ?' => [ {} => 1 ] ],
+  ) {
+    my ($col, $sel_grp_sql, @sel_grp_bind) = @$_;
+
+    warnings_exist { is_same_sql_bind(
+      $rstypes->{'implicitly grouped'}->get_column($col)->as_query,
+      "(
+        SELECT $sel_grp_sql
+          FROM cd me
+          JOIN artist artist
+            ON artist.artistid = me.artist
+          LEFT JOIN track tracks
+            ON tracks.cd = me.cdid
+        WHERE artist.name != ? AND tracks.trackid IS NOT NULL
+        GROUP BY $sel_grp_sql
+        ORDER BY MIN(me.year)
+      )",
+      [
+        @sel_grp_bind,
+        [ { dbic_colname => 'artist.name', sqlt_datatype => 'varchar', sqlt_size => 100 }
+          => 'evancarrol' ],
+        @sel_grp_bind,
+      ],
+      'Expected (though nonsensical) SQL generated on rscol-with-distinct-over-function',
+    ) } qr/
+      \QUse of distinct => 1 while selecting anything other than a column \E
+      \Qdeclared on the primary ResultSource is deprecated (you selected '$col')\E
+    /x, 'deprecation warning';
+  }
+
+  {
+    local $TODO = 'multiplying join leaks through to the count aggregate... this may never actually work';
+    is_deeply (
+      [ $rstypes->{'explicitly grouped'}->get_column ('cnt')->all ],
+      [qw(1 1 1 2)],
+      "Get aggregate over group works",
+    );
+  }
+}
+
 done_testing;