Fixes #10 : Fix incorrect DbSelect::count() when setted \PDO::ATTR_CASE => \PDO::CASE_LOWER in driver options

src/Adapter/DbSelect.php

@@ -14,6 +14,7 @@
 use Laminas\Db\Sql\Expression;
 use Laminas\Db\Sql\Select;
 use Laminas\Db\Sql\Sql;
+use LogicException;
 
 class DbSelect implements AdapterInterface
 {
@@ -122,7 +123,7 @@ public function count()
         $result    = $statement->execute();
         $row       = $result->current();
 
-        $this->rowCount = (int) $row[self::ROW_COUNT_COLUMN_NAME];
+        $this->rowCount = $this->locateRowCount($row);
 
         return $this->rowCount;
     }
@@ -165,4 +166,18 @@ public function getArrayCopy()
             ),
         ];
     }
+
+    private function locateRowCount(array $row)
+    {
+        if (array_key_exists(self::ROW_COUNT_COLUMN_NAME, $row)) {
+            return (int) $row[self::ROW_COUNT_COLUMN_NAME];
+        }
+
+        $lowerCaseColumnName = strtolower(self::ROW_COUNT_COLUMN_NAME);
+        if (array_key_exists($lowerCaseColumnName, $row)) {
+            return (int) $row[$lowerCaseColumnName];
+        }
+
+        throw new LogicException('Unable to determine row count; missing row count column in result');
+    }
 }

test/Adapter/DbSelectTest.php

@@ -90,6 +90,18 @@ public function testCount()
         $this->assertEquals(5, $count);
     }
 
+    public function testCountQueryWithLowerColumnNameShouldReturnValidResult()
+    {
+        $this->dbSelect = new DbSelect($this->mockSelect, $this->mockSql);
+        $this->mockResult
+            ->expects($this->once())
+            ->method('current')
+            ->will($this->returnValue([strtolower(DbSelect::ROW_COUNT_COLUMN_NAME) => 7]));
+
+        $count = $this->dbSelect->count();
+        $this->assertEquals(7, $count);
+    }
+
     public function testCustomCount()
     {
         $this->dbSelect = new DbSelect($this->mockSelect, $this->mockSql, null, $this->mockSelectCount);