Feat: symfony container

[bpolaszek]

This 1st PR provides 2 helpers:

• app() giving access to the Kernel
• container() giving access to the container. When APP_ENV is test, Symfony exposes a special container where all services are public. If it exists, it is picked by default.

[bpolaszek]

Hello @nunomaduro,

PHPStan barks because:

• Function Pest\Symfony\container() has parameter $app with a nullable type declaration.
• Function Pest\Symfony\container() has parameter $app with null as default value.

What's actually wrong with this?

• Function Pest\Symfony\container() should return Symfony\Component\DependencyInjection\ContainerInterface but returns object|null.

That's the point of the service locator. Can I safely add a phpstan-ignore directive on that one?

[Jibbarth]

Hi @bpolaszek ! Great work 👏

For the nullable parameter error in phpstan, the rule come from https://github.com/ergebnis/phpstan-rules#functionsnoparameterwithnullabletypedeclarationrule

In this case, I think you can ignore them in phpstan.neon or via @phpstan-ignore-next-line annotation.

[nunomaduro]

Everything sounds good for me, just those small comments.

[bpolaszek]

CI is green! 🎉

[Jibbarth]

Wonderful 🎉

[nunomaduro]

This is good to merge? No updates needed on the docs?

[bpolaszek]

This is good to merge? No updates needed on the docs?

Maybe some doc entries would be cool indeed. I'll write them ASAP, and I think they should be part of the PR (unless you prefer I do a separate one).

Sorry to produce code in drops, I do that in my spare time among other things (as we all do in OSS, but it's always frustrating that weeks pass and nothing lands...).

[nunomaduro]

Docs should go here: https://github.com/pestphp/docs.