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

Rector run Failed:

{ "totals": { "changed_files": 0, "errors": 1 }, "errors": [ { "message": "System error: \"Attempt to assign property \"type\" on null\"\nRun Rector with \"--debug\" option and post the report here: https://github.com/rectorphp/rector/issues/new", "file": "/var/www/storage/demo/vy5a3fltk08ul6ytcatd/rector_analyzed_file.php", "line": 75 } ] }

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

PHP snippet to change

<?php

use PHPUnit\Framework\TestCase;

final class SomeTest extends TestCase
{
    protected function setUp(): void
    {
        $this->someServiceMock = $this->createMock(SomeService::class);
    }

    public function testOne(): void
    {
        $someObject = new SomeClass($this->someServiceMock);
    }
}

Config rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\PHPUnit\PHPUnit120\Rector\Class_\PropertyCreateMockToCreateStubRector;

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

Rector version: bc1720 - released at 2026-06-02 21:36