What is the right way to use CustomAuthentifer in symfony 5.3.6 security and not break the test loginUser?

Question

symfony

Hello!

The problem of obtaining information about an authorized user.

When I remove the main block in security.yaml , the $this->client->loginUser($testUser) test snippet works properly
and AccountController::getUser() returns User - as it should.

But if the main block is uncommented, then the target route returns null instead of the expected user =(((

More details below:

There is a security.yaml config :

security:
  enable_authenticator_manager: true
  encoders:
    App\Model\User\Entity\User\User:
      algorithm: bcrypt
  providers:
    app_user_provider:
      entity:
        class: App\Model\User\Entity\User\User
        property: email
  firewalls:
    dev:
      pattern: ^/(_(profiler|wdt)|css|images|js)/
      security: false
    main:
      provider: app_user_provider
      custom_authenticators:
        - App\Security\LoginFormAuthenticator
  access_control:

There is a custom authenticator: LoginFormAuthenticator :

namespace App\Security;

class LoginFormAuthenticator extends AbstractAuthenticator {
...

There is a test to get information about the user:

class UserinfoTest extends DbWebTestCase
{
    private const API_PREFIX = '/api/v1';

    protected function setUp(): void
    {
        $this->client = static::createClient();
        $this->client->disableReboot();
        $this->em = static::getContainer()->get('doctrine')->getManager();
    }

    public function test_userinfo_success()
    {
       
        $userRepository = $this->em->getRepository(User::class);
        $testUser = $userRepository->findOneBy(['email' => '[email protected]']);
        $this->client->loginUser($testUser);
        $this->client->request('GET', self::API_PREFIX . '/account/userinfo');
         ...
    }
}

And the AccountController itself, where the test goes:

namespace App\Controller\Api\V1\Account;

#[Route('api/v1/account')]
class AccountController extends BaseController
{
    #[Route('/userinfo')]
    public function userInfo(): JsonResponse
    {
        $user = $this->getUser();

        return $this->json([
            'code' => 200,
            'data' => [
                'user' => [
                    'username' => (string)$user->getUsername(),
                ]
            ]
        ], 200, []);
    }

    protected function getUser(): User
    {
        return parent::getUser();  // !!!!!!!!! ПРОБЛЕМА ТУТ
    }
}

And the User itself :

namespace App\Model\User\Entity\User;

class User implements UserInterface, UserLoaderInterface, UserProviderInterface {
...

Please tell me - how to save the authenticator and the ability to authorize the user in the test through loginUser ?