rector/config/set/phpunit91.php

<?php

declare(strict_types=1);

use Rector\PHPUnit\Rector\Class_\AddProphecyTraitRector;
use Rector\Renaming\Rector\MethodCall\RenameMethodRector;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $containerConfigurator): void {
    $services = $containerConfigurator->services();

    $services->set(AddProphecyTraitRector::class);

    $services->set(RenameMethodRector::class)
        ->call('configure', [[
            RenameMethodRector::OLD_TO_NEW_METHODS_BY_CLASS => [
                'PHPUnit\Framework\TestCase' => [
                    'assertFileNotExists' => 'assertFileDoesNotExist',
                ],
            ],
        ]]);
};