bypassFinals: touch() expects parameter 2 to be integer, null given

[Gappa]

Version: 2.2.0

Bug Description

When bypassFinals is enabled this code throws this error:

• touch($file);
• touch() expects parameter 2 to be integer, null given

Steps To Reproduce

<?php
declare(strict_types=1);

use Tester\Assert;
use Tester\Environment;
use Tester\TestCase;

require __DIR__ . '/../bootstrap.php';
Environment::bypassFinals();

final class TesterTest extends TestCase
{
	public function testTouch()
	{
		touch('test.txt');
		Assert::same('x', 'x');
	}
}

$test = new TesterTest;
$test->run();

Expected Behavior

Code creates (or updates access time of) the file test.txt.

Possible Solution

Look similar to #395.