public function testConnectionExcpetion()
 {
     $isCatched = false;
     try {
         $mysqlHandler = new MySQLHandler('', '', '', 'a fail host');
         $mysqlHandler->getConnection();
     } catch (PDOException $e) {
         echo $e->getMessage();
         $isCatched = true;
     }
     $this->assertTrue($isCatched);
 }