KernelTestCaseContainerPropertyDeprecationRector

Simplify use of assertions in WebTestCase

 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;

 class SomeTest extends KernelTestCase
 {
     protected function setUp(): void
     {
-        $container = self::$container;
+        $container = self::getContainer();
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Symfony\Symfony53\Rector\StaticPropertyFetch\KernelTestCaseContainerPropertyDeprecationRector;

return RectorConfig::configure()
    ->withRules([
        KernelTestCaseContainerPropertyDeprecationRector::class,
    ]);
SETS:  symfony/* 5.3