How to select or change JUnit version in Eclipse?

Question

Basically the source code I am using requires a very specific JUnit test version such as:

lucene-test-framework-XX.jar
  The compiled Lucene test-framework l         


        

Answer 1

The problem, at least in Eclipse Luna SR1/SR2, is that Eclipse seems to prioritize the packaged plugin with JUnit 4.11 in "eclipse/plugins/org.junit_4.11.0.v201303080030". Even after trying the answer above to force the version I needed, I kept getting the same test errors so it seems that Junit 4.11 was still being used.

The only solution that has worked so far for me is to replace the junit.jar in that directory (eclipse/plugins/org.junit_4.11.0.v201303080030) with the version I wanted.