[xwiki-devs] Improving tests with Descartes

Hi devs, It would be great if you could help improve our unit tests using Descartes. This is needed for the STAMP research project (https://www.stamp-project.eu/view/main/) and will benefit XWiki by having 2 effects: * increasing the test coverage * improving the tests themselves (increasing their mutation score) Since 10.7 is 50% testing and 50% BFD, it would be great if you could spend all or a substantial part of your testing time working on this. I propose the following strategy: * You find a module you want to work on. * In that module you run: mvn clean install -Pquality -Dxwiki.pitest.skip=false * Then you check target/pit-reports/<date>/issues/index.html and verify if there are "pseudo tested" methods listed (when we have finished fixing all of those we can move to “partially tested methods”). * If there are some, then please record the current jacoco threshold and the current mutation score. * You can get the jacoco threshold by running "mvn clean install -Pquality -Dxwiki.pitest.skip=false -Dxwiki.pitest.mutationThreshold=100” (or by checking target/pit-reports/<date>/index.html, I haven’t checked yet if they are the same). * You can get the current mutation score by checking target/pit-reports/<date>/index.html * Then fix the test so that Descartes doesn’t report any pseudo tested or partially tested methods * Update the jacoco threshold and the mutation scores in the pom.xml * Send a PR on https://github.com/STAMP-project/descartes-usecases-output/tree/master/xwiki using the format already defined there. WDYT? Doable? Thanks -Vincent