Github user afs commented on the issue:
https://github.com/apache/jena/pull/447
Yes - it is a bit tricky to do deep testing. This is partially offset by
the fact the command line tools are ways to call the core functionality so are
small. I think most commands can now run "in-JVM" and they don't call e.g.
`System.exit` but I'm not sure how uniform this is.---
