How do I authenticate user in functional test on Symfony 4 - authentication

Question

I'm testing a page protected with IsGranted('ROLE_ADMIN') annotation. How do I make a request that simulate an autheticated user with role 'ROLE_ADMIN'?

Answer 1

I used this
<?php
namespace App\Tests\Controller;
use Symfony\Component\BrowserKit\Cookie;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\Security\Core\Authentication\Token\UsernamePasswordToken;
/**
* Test Page controller
*/
class PageControllerTest extends WebTestCase
{
private $client = null;
public function setUp()
{
$this->client = static::createClient();
}
public function testHomePage()
{
$client = static::createClient();
$client->request('GET', '/');
$this->assertTrue($client->getResponse()->isRedirect('/login'));
}
public function testHomePageSuccess()
{
$this->logIn();
$this->client->request('GET', '/');
$this->assertEquals(200, $this->client->getResponse()->getStatusCode());
}
private function logIn()
{
$session = $this->client->getContainer()->get('session');
$firewallName = 'main';
$firewallContext = 'main';
$token = new UsernamePasswordToken('admin', null, $firewallName, ['ROLE_ADMIN']);
$session->set('_security_'.$firewallContext, serialize($token));
$session->save();
$cookie = new Cookie($session->getName(), $session->getId());
$this->client->getCookieJar()->set($cookie);
}
}