Most of JUnit tests of OLM module need to be reviewed, and largely redone because:

• their relevance is higly questionable from a business point of view
• lots of redundancy (several tests test more or less nothing, or the same thing, while in different places...)
• majority of them instanciate lots of dependent objects (with lots of writing in datastore what makes JUnit test execution being rather long) instead of mocking them
• maintenance of this module becomes very difficult