Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

 {
     public function testSuccess(): void
     {
-        $mock = $this->createMock(\stdClass::class);
+        $mock = self::createMock(\stdClass::class);
         
-        $this->assertTrue(true);
+        self::assertTrue(true);
     }
 }

PHP snippet to change

<?php

// PreferPHPUnitSelfCallRector
final class DemoFile extends \PHPUnit\Framework\TestCase
{
    public function testSuccess(): void
    {
        $mock = $this->createMock(\stdClass::class);
        
        $this->assertTrue(true);
    }
}

Applied Rules:

PreferPHPUnitSelfCallRector
PreferPHPUnitThisCallRector

Not a change you expect?

Create an issue on GitHub

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;

return RectorConfig::configure()
    ->withPreparedSets(phpunitCodeQuality: true)
    ->withRules([\Rector\PHPUnit\CodeQuality\Rector\Class_\PreferPHPUnitSelfCallRector::class]);

Rector version: ea5089 - released at 2026-01-27 00:48