Symfony version(s) affected

6.4.10

Description

I'm migrating my Symfony 6.4 app from Webpack Encore to AssetMapper, but I'm having an issue with the installation of the assets.

The importmap:install requires the HTTP client to download assets; since it's using the normal client from the app itself, it may encounter issues if the client is altered in any way.

In my case, I set APP_ENV=test from the start in my CI, so that every command runs with that environment, even the cache:clear and importmap:install post-install command executed during composer install; in said environment, I also mocked the HTTP client, which in turn means that importmap:install tries to execute HTTP calls with such mocked client, which during the vendor installation is obviously not ready.

How to reproduce

• require symfony/asset-mapper in a Symfony skeleton app
• require some remote asset (i.e. bin/console importmap:require jquery)
• set the HTTP client to use a "broken" mocked response factory:

namespace Foo;

class MockClientCallback
{
    public function __invoke()
    {
        throw new \Exception('Intentional failure');
    }
}

framework:
 http_client:
   mock_response_factory: Foo\MockClientCallback

• run bin/console importmap:install

Possible Solution

I don't know how to limit the scope of the mock factory. Using a scoped client for the assets would not fix my issue; maybe we shouldn't use the client from the app for such a command?

Additional Context

#49995 & #52257 reported an issue with the same root cause, and #52265 tried to solve it but seems stuck.