ContextListener example

use Symfony\Component\Security\Core\User\UserInterface;
use Symfony\Component\Security\Core\User\UserProviderInterface;
use Symfony\Component\Security\Http\Firewall\ContextListener;
use Symfony\Contracts\Service\ServiceLocatorTrait;

class ContextListenerTest extends TestCase
{
    public function testItRequiresContextKey()
    {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('$contextKey must not be empty');
        new ContextListener(
            $this->createMock(TokenStorageInterface::class),
            [],
            ''
        );
    }

    public function testUserProvidersNeedToImplementAnInterface()
    {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('User provider "stdClass" must implement "Symfony\Component\Security\Core\User\UserProviderInterface');
        $this->handleEventWithPreviousSession([new \stdClass()]);
    }