public function testWrongPdoErrMode() {
$pdo = new \PDO("sqlite::memory:");
$pdo
->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_SILENT);
$pdo
->exec("CREATE TABLE sessions (sess_id VARCHAR(255) PRIMARY KEY, sess_data TEXT, sess_time INTEGER)");
$this
->setExpectedException('InvalidArgumentException');
$storage = new PdoSessionHandler($pdo, array(
'db_table' => 'sessions',
), array());
}