__DIR__ + "/../vendor" to dirname(__DIR__) + "/vendor"

Author: SignpostMarv

tests/bootstrap.php

@@ -1,4 +1,4 @@
 <?php
 
-$loader = require __DIR__ . '/../vendor/autoload.php';
+$loader = require dirname(__DIR__) . '/vendor/autoload.php';
 //$loader->add('PHPVerbalExpressions\Tests', __DIR__);