ContainerGetNameToTypeInTestsRector

Change $container->get("some_name") to bare type, useful since Symfony 3.4

 use PHPUnit\Framework\TestCase;

 final class SomeTest extends TestCase
 {
     public function run()
     {
         $container = $this->getContainer();
-        $someClass = $container->get('some_name');
+        $someClass = $container->get(SomeType::class);
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Symfony\Symfony34\Rector\Closure\ContainerGetNameToTypeInTestsRector;

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