TypedPropertyFromDocblockSetUpDefinedRector

Add property type in PHPUnit test from docblock, if defined in setUp() method

 use PHPUnit\Framework\TestCase;

 class SomeClass extends TestCase
 {
-    /**
-     * @var \Doctrine\ORM\EntityManagerInterface
-     */
-    private $doctrine;
+    private \Doctrine\ORM\EntityManagerInterface $doctrine;

     protected function setUp(): void
     {
         $this->doctrine = $this->container('doctrine.orm.entity_manager');
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Class_\TypedPropertyFromDocblockSetUpDefinedRector;

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