[Turbo] TurboStreamListenRenderer service doesn't register correctly when Mercure Hub is mocked

[milankaranovic]

Hey everyone! 👋🏻

I updated symfony/ux-turbo from v2.23.0 to 2.25.2 and my tests (WebTestCase) started failing with this error

ErrorException: An exception has been thrown during the rendering of a template 
("Too few arguments to function Symfony\UX\Turbo\Bridge\Mercure\TurboStreamListenRenderer::__construct(), 
3 passed in /app/var/cache/test/ContainerO3ffV3d/getTurbo_Mercure_Default_RendererService.php
 on line 31 and exactly 4 expected") in "foo.html.twig" at line 31.

On line 31 is turbo_stream_listen.

Additionally, I havemercure.hub.default mocked according to these instructions https://symfony.com/doc/current/mercure.html#testing

I see that this PR #2447 has been merged in v2.24.0, and a lot of things related to turbo_stream_listen has changed, including RegisterMercureHubsPass. It loops through mercure.hub tags, so I ended up with this solution

# config/services_test.yaml
services:
    mercure.hub.default:
        class: Tests\Services\MockMercureHub
        tags:
            - 'mercure.hub'

Reporting this because I'm not sure if this is a bug or if the documentation has to be updated.

[Kocal]

Hi,

I tried to reproduce your issue but without success.

If I create a Hub stub like this:

<?php

declare(strict_types=1);

namespace App\Mercure;

use Symfony\Component\Mercure\HubInterface;
use Symfony\Component\Mercure\Jwt\TokenFactoryInterface;
use Symfony\Component\Mercure\Jwt\TokenProviderInterface;
use Symfony\Component\Mercure\Update;

final readonly class HubStub implements HubInterface
{
    public function __construct(
        private string $publicUrl,
    ) {
    }

    public function getUrl(): string
    {
        // TODO: Implement getUrl() method.
    }

    public function getPublicUrl(): string
    {
        return $this->publicUrl;
    }

    public function getProvider(): TokenProviderInterface
    {
        // TODO: Implement getProvider() method.
    }

    public function getFactory(): ?TokenFactoryInterface
    {
        // TODO: Implement getFactory() method.
    }

    public function publish(Update $update): string
    {
        return 'id';
    }
}

and register-it in my configuration like this:

# config/services_test.yaml
services:
    mercure.hub.default:
        class: App\Mercure\HubStub
        arguments:
            - '%env(MERCURE_PUBLIC_URL)%'

Running a PHPUnit KernelTestCase with dump(self::getContainer()->get(HubInterface::class)) correctly shows me my App\Mercure\HubStub instance.

Maybe do you have a reproducer?