Tests located on abstracts classes are not taken into account

[tmortagne]

When running pitest/descartes on the following modules get a very low score because all the test that are located on an abstract class are not taken into account:

• xwiki-commons-filter-api (tests located in AbstractFilterDescriptorManagerTest)
• xwiki-commons-cache-infinispan (tests actually located in AbstractEvictionGenericTestCache in module xwiki-commons-cache-tests)

The reason for the abstract is to validate the same features in different cache engines or with different configuration.

[tmortagne]

pit-reports.zip
Here is the pit report for xwiki-commons-filter-api

[vmassol]

@oscarlvp FYI Thomas is a dev on XWiki working with me. I asked him to report this issue which is likely to be an issue from PIT and it's also similar to #53

[tmortagne]

Same things with xwiki-platform-security-api but this time the extended class with test come from a dependency (It's Guava MapInterfaceTest which is used to validate that the some Map implementation is doing what it's supposed to).