rater/tests/Integration/Controller/SubjectControllerTest.php

<?php

namespace App\Tests\Integration\Controller;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;

class SubjectControllerTest extends WebTestCase
{
    public function testSomething(): void
    {
        $client = static::createClient();
        $crawler = $client->request('GET', '/');

        $this->assertResponseIsSuccessful();
        $this->assertSelectorTextContains('h1', 'Rater');
    }
}