PHPUnit test have to check every case

Code
<?php

use PHPUnit\Framework\TestCase;

/**
 * The exception test case with
 * second parameter 0 isn't even enough.
 */
class DivideTest extends TestCase
{
    public function testCalcException() : void
    {
        $this->expectException('\InvalidArgumentException');
        $divide = new Divide();
        $divide->calc(1, 0);
    }
}

class Divide
{
    public function calc($dividend, $divisor)
    {
        if (0 == $divisor) {
            throw new InvalidArgumentException('you really want to divide
                with 0? Are you serious?');
        }
        
        return $dividend / $divisor;
    }
}
Result
Time: 00:00.004, Memory: 18.00 MB

OK (1 test, 0 assertions)
Used Versions
PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8