Tag Doctrine's EntityManager with ResetInterface

[Aerendir]

Description
Following this discussion on Twitter with @lyrixx and @nicolas-grekas , I'm opening this issue.

It seems that the Doctrine's EntityManagers are not tagged with the ResetInterface interface and so they are not reset when calling Application::reset() method.

Currently I've not verified on my own, but I trust what @lyrixx said in the Twitter 3d.

[xabbuh]

Can you open the issue in the DoctrineBundle repository? That's where the service for the entity manager is defined.

[nicolas-grekas]

Actually we do reset the entity managers, it's the job of ManagerRegistry, see https://github.com/symfony/symfony/blob/master/src/Symfony/Bridge/Doctrine/ManagerRegistry.php

This works only when ocramius/proxy-manager is installed - for some reasons I don't recall - but they must be serious (please prove me wrong :) )

[Aerendir]

So, in the end, the answer is "Yes, the EntityManager is reset when calling Application::rest()"?

[nicolas-grekas]

It's a bit more subtle but yes, the answer is yes :)

[Aerendir]

What do you mean by “a bit more subtle”?🤔

[nicolas-grekas]

@Aerendir what I wrote above :)

This works only when ocramius/proxy-manager is installed

[nicolas-grekas]

On a closer look, while the code infrastructure is there, it looks like it's not wired by default.
I opened doctrine/DoctrineBundle#1083 as a follow up.

[alcaeus]

A fix has been released in DoctrineBundle 1.12.4 and 2.0.4. Thanks for your patience!