Dump() are not loaded when running tests with phpunit.

[Anthocnt]

Hello! I develop a Prestashop module and I would like to create some tests with phpunit. I don't know why but some methods like dump() are not loaded properly.. 

tests/KernelTest.php

<?php

namespace PrestaShop\Module\MyModule\Tests;

use Nette\DI\Container;
use PHPUnit\Framework\TestCase;

class KernelTest extends TestCase
{
    public function testKernel()
    {
        dump(Container::class);
        $this->assertTrue(true);
    }
}

 

The following code returns :
Error: Call to undefined function PrestaShop\Module\MyModule\Tests\dump()

I use the PSR-4 composer autoloader, everything else is worklng perfecly (yet). 

I tried to download the symfony/var-dumper() package but it doesn't solve anything..

This is my PSR-4 configuration:

"autoload": {
  "psr-4": {
    "PrestaShop\\Module\\MyModule\\": "src/",
    "PrestaShop\\Module\\MyModule\\Tests\\": "tests/"
},

`src` and `tests` folders are at the root of my module.

Anyone can tell me what's wrong?

Thank you!

[Janett]

https://github.com/PrestaShop/PrestaShop/blob/1.7.8.6/config/alias.php