From: John Napiorkowski <jjn1056@yahoo.com>
Date: Tue, 6 May 2008 18:47:00 +0000 (+0000)
Subject: changed the warning on DBIC::Storage::DBI->select_single so that it wont call fetch_... 
X-Git-Tag: v0.08240~463
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class.git;a=commitdiff_plain;h=1a4e8d7c8431df44e9cf1cc4f5d261390ec789c6

changed the warning on DBIC::Storage::DBI->select_single so that it wont call fetch_* on an empty sth, updated tests for the above and added a todo test for the wrong count problem
---

diff --git a/lib/DBIx/Class/Storage/DBI.pm b/lib/DBIx/Class/Storage/DBI.pm
index d0f5b1e..7d76be6 100644
--- a/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@ -1287,7 +1287,9 @@ sub select_single {
   my $self = shift;
   my ($rv, $sth, @bind) = $self->_select(@_);
   my @row = $sth->fetchrow_array;
-  carp "Query returned more than one row" if $sth->fetchrow_array;
+  if(@row && $sth->fetchrow_array) {
+    carp "Query returned more than one row.  SQL that returns multiple rows is DEPRECATED for ->find and ->single";
+  }
   # Need to call finish() to work round broken DBDs
   $sth->finish();
   return @row;
diff --git a/t/61findnot.t b/t/61findnot.t
index 17f64fd..8479494 100644
--- a/t/61findnot.t
+++ b/t/61findnot.t
@@ -54,7 +54,8 @@ ok($art, 'Artist found by key in the resultset');
 $artist_rs = $schema->resultset("Artist");
 warning_is {
   $artist_rs->find({}, { key => 'primary' })
-} "DBIx::Class::ResultSet::find(): Query returned more than one row", "Non-unique find generated a cursor inexhaustion warning";
+} "DBIx::Class::ResultSet::find(): Query returned more than one row.  SQL that returns multiple rows is DEPRECATED for ->find and ->single"
+    =>  "Non-unique find generated a cursor inexhaustion warning";
 
 $artist_rs = $schema->resultset("Artist")->search({}, { prefetch => 'cds' });
 warning_is {
diff --git a/t/71mysql.t b/t/71mysql.t
index a326dda..4aa48bd 100644
--- a/t/71mysql.t
+++ b/t/71mysql.t
@@ -13,7 +13,7 @@ my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_MYSQL_${_}" } qw/DSN USER PASS/};
 plan skip_all => 'Set $ENV{DBICTEST_MYSQL_DSN}, _USER and _PASS to run this test'
   unless ($dsn && $user);
 
-plan tests => 5;
+plan tests => 10;
 
 my $schema = DBICTest::Schema->connect($dsn, $user, $pass);
 
@@ -85,6 +85,34 @@ SKIP: {
     is_deeply($type_info, $test_type_info, 'columns_info_for - column data types');
 }
 
+## Can we properly deal with the null search problem?
+
+use Data::Dump qw/dump/;
+
+NULLINSEARCH: {
+    
+    ok my $artist1_rs = $schema->resultset('Artist')->search({artistid=>6666})
+    => 'Created an artist resultset of 6666';
+    
+    is $artist1_rs->count, 0
+    => 'Got no returned rows';
+    
+    ok my $artist2_rs = $schema->resultset('Artist')->search({artistid=>undef})
+    => 'Created an artist resultset of undef';
+    
+    TODO: {
+    	$TODO = "need to fix the row count =1 when select * from table where pk IS NULL problem";
+	    is $artist2_rs->count, 0
+	    => 'got no rows';    	
+    }
+
+    my $artist = $artist2_rs->single;
+    
+    is $artist => undef
+    => 'Nothing Found!';
+}
+    
+
 # clean up our mess
 END {
     $dbh->do("DROP TABLE artist") if $dbh;