phpunit PDOException Assert

DBATest.php

<?php declare(strict_types=1);

use PHPUnit\Framework\TestCase;

class DBA
{
    public function getRowCount($table)
    {
        $pdo = new PDO("mysql:host=localhost;dbname=test",'root','');
        $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        
//         try {
            $res = $pdo->query("SELECT COUNT(1) FROM $table");
            $count = $res->fetchColumn();
            return $count;
//         } catch (PDOException $e) {
//             die($e->getMessage().PHP_EOL);
//         }
    }
}

class MyTest extends TestCase
{
    public function testPDOException() : void
    {
        $pdo = new DBA();

        // Assert
        $this->expectException(PDOException::class);

        // Act
        $row = $pdo->getRowCount('guestbookerrrer');
    }
}

add $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
run phpunit result:

PHPUnit 9.5.1 by Sebastian Bergmann and contributors.

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'test.guestbookerrrer' doesn't exist

must remove getRowCount try...catch , the phpunit test will can run ok. but .....