Bug/Discuss: Clear Flow/Neos cache in @BeforeScenario hook to make behat scenarios isolated from each other

[erickloss]

Problem:
When executing multiple scenarios in a row that import node data fixtures, the Neos/Fusion cache is not invalidated after rendering a page in a scenario. That makes the scenarios interdependent in some way.

Let's discuss if there is a more fancy solution than that. Tests slow down more ofc with a fresh cache.

[klfman]

I think that flushing the cache is a good idea. The performance problems could be mitigated a bit by flushing individual caches, for example the fusion cache, if the tests are only about rendering.

[skurfuerst]

I would not clear the code cache of flow; but it definitely makes sense to clear the fusion content cache :):)

[skurfuerst]

(not clearing the code cache because it makes the system a lot a lot slower)