i have been struggling for 2 days now. I already searched online but can’t find an answer.

I have created a simple API with request Validation, but i can’t test the route i have created because when i send a body it appears to be always empty. Below my testCase for example

public function testChangeStateOnZoneWithInvalidData(): void
{
    $client = static::createClient();

    $parameters = []; // Corps de la requête JSON vide

    $client->request(
        'POST',
        '/api/zone/1',
        [],  // Pas de paramètres GET
        [],  // Pas de fichiers
        [
            'CONTENT_TYPE' => 'application/json',
            'ACCEPT' => 'application/json',
        ],
        json_encode($parameters)  // Corps de la requête JSON
    );
    dump($client->getRequest()->getContent());
    $response = $client->getResponse();

    // Afficher la réponse pour le débogage
    // dump($response->getContent());   s

    // Vérifiez si la réponse est un JSON valide
    $this->assertJson($response->getContent(), 'Response is not valid JSON');

    // Vérifiez le code de statut
    $this->assertEquals(400, $response->getStatusCode(), 'Expected status code 400');
}

Anyone could help me to find a workaroud or to help to do something good.