AddParentSetupCallOnSetupRector

Add missing parent::setUp() call on setUp() method on test class

 use PHPUnit\Framework\TestCase;

 final class SomeTest extends TestCase
 {
     protected function setUp(): void
     {
+        parent::setUp();
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\PHPUnit\CodeQuality\Rector\Class_\AddParentSetupCallOnSetupRector;

return RectorConfig::configure()
    ->withRules([
        AddParentSetupCallOnSetupRector::class,
    ]);