Following #201 and #3014, this issue will focus on creating a new extension API in JUnit Jupiter that allows for ClassLoader customization.

This extension should be able to work in conjunction with others, such as @TestTemplate.

How I see it designed in JUnit Jupiter:

• a new interface ClassLoaderModifier with a unique method ClassLoader modify(ClassLoader current)
  • the documentation should precise that the returned class loader should have the same parent as the given one

What needs to be checked :

• Is this model sufficient for other class loading modifying tools (powermocks, robolectric, etc.) ?

🙏 Please do not troll, ask for due date or complain on this ticket, the original ticket is cluttered with these unhelpful comments and is really painful to read when it comes to what features should be implemented and how