RemoveTestsOverriddenPrivateMethodParameterRector

Find another rule

Remove parameter of private test class method, that is overridden by direct assign before its first use

 use PHPUnit\Framework\TestCase;

 final class SomeTest extends TestCase
 {
     public function test()
     {
-        $this->createUser(new User());
+        $this->createUser();
     }

-    private function createUser($user)
+    private function createUser()
     {
         $user = $this->createMock(User::class);

         return $user;
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\ClassMethod\RemoveTestsOverriddenPrivateMethodParameterRector;

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

SETS: Dead Code