JUnit4 SpringClassRule and SpringMethodRule to SpringExtension

[Laurens-W]

What's changed?

Added a recipe to migrate from JUnit 4 Spring Rules to JUnit 5 ExtendWith

What's your motivation?

• Fixes The Junit4to5Migration recipe fails to migrate @ClassRule (of type SpringClassRule) #567

Anything in particular you'd like reviewers to focus on?

Anyone you would like to review specifically?

@timtebeek @FieteO

Have you considered any alternatives or workarounds?

Any additional context

I'm wondering whether there'd be any harm in annotating the class with @SpringBootTest instead of @ExtendWith(SpringExtension.class)

Checklist

• I've added unit tests to cover both positive and negative cases
• I've read and applied the recipe conventions and best practices
• I've used the IntelliJ IDEA auto-formatter on affected files

[FieteO]

Regarding your concern with @SpringBootTest:
I think you are right, there is a difference: @SpringBootTest influences context scanning, while @Extend(SpringExtension.class) doesn't. Having that in mind, using @ExtendWith(...) is the safer thing to do.

[timtebeek]

Good addition; thanks! Also thanks to @FieteO for the suggestion and helpful context in the review.