Update tests in r.core to use JUnit 5 jupiter

Change-Id: Ic812718173368771ae20f17207d448e6796340b8
13 files changed
tree: 32542dc31530feb60e3fe02748f40813887cde8e
  1. .settings/
  2. r/
  3. redocs/
  4. rhelp/
  5. rtm/
  6. .project
  7. LICENSE
  8. NOTICE.md
  9. pom.xml