The tests for clover-plugin could use some enhancements.
I am willing to add tests, if for no other reason than to document expected behavior.
I'm closing this issue as too generic.
If some feature does not work due to some edge case - let's raise a bug for this, fix it and add a test verifying it.
If some feature is unclear - let's improve the wiki https://wiki.jenkins.io/display/JENKINS/Clover+Plugin