<?php

use org\bovigo\vfs\vfsStream;
use PHPUnit\Framework\TestCase;

class FsTest extends TestCase
{
    public function testFileExists() : void
    {
        /* @var $baseDir org\bovigo\vfs\vfsStreamDirectory */
        $baseDir = vfsStream::setup('dir');
        
        mkdir(vfsStream::url('dir')  . '/' . 'myDir');
        
        $this->assertTrue($baseDir->hasChild('myDir'));
        $this->assertTrue(file_exists(vfsStream::url('dir')  . '/' . 'myDir'));
    }
}

Time: 00:00.005, Memory: 18.00 MB

OK (1 test, 0 assertions)

• Testing collections in PHPUnit
• Handling fluid interfaces with a Mockery mock objects
• Returning different values in a specific order from your mocked method in PHPUnit

PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8