Bluz\Db\Db::fetchColumnGroup PHP Method

    public function fetchColumnGroup($sql, $params = [])
    {
        $stmt = $this->prepare($sql, $params);
        $result = $stmt->fetchAll(\PDO::FETCH_COLUMN | \PDO::FETCH_GROUP);
        $this->ok();
        return $result;
    }

 /**
  * fetchColumnGroup
  */
 public function testFetchColumnGroup()
 {
     $result = $this->db->fetchColumnGroup("SELECT status, COUNT(id) FROM test GROUP BY status");
     $this->assertArrayHasKey('active', $result);
     $this->assertArrayHasKey('disable', $result);
     $this->assertArrayHasKey('delete', $result);
 }