Use pytest to generate junit xml files for python tests

[ahcorde]

Signed-off-by: ahcorde [email protected]

🦟 Bug fix

Summary

Python unit tests currently don't generate junit xml files for consumption by Jenkins. This results in Jenkins indicating that there are no failing tests when python tests are failing. couldn't find a way to generate these files using the builtin unittest python library, so I have added a dependency on pytest. If pytest is not available, a CMake warning is emitted.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #1562 (4ef6016) into ign-gazebo6 (1f6c126) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           ign-gazebo6    #1562   +/-   ##
============================================
  Coverage        64.01%   64.01%           
============================================
  Files              317      317           
  Lines            25635    25635           
============================================
  Hits             16410    16410           
  Misses            9225     9225           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1f6c126...4ef6016. Read the comment docs.

[chapulina]

I see that testFixture_TEST.py ran on Jenkins, but I don't see it on the test result list, should it be there?

https://build.osrfoundation.org/job/ignition_gazebo-ci-pr_any-ubuntu_auto-amd64/9043/testReport/(root)/

[ahcorde]

I see that testFixture_TEST.py ran on Jenkins, but I don't see it on the test result list, should it be there?

https://build.osrfoundation.org/job/ignition_gazebo-ci-pr_any-ubuntu_auto-amd64/9043/testReport/(root)/

I can see the test here https://build.osrfoundation.org/job/ignition_gazebo-ci-pr_any-ubuntu_auto-amd64/9043/testReport/

[chapulina]

Nice, I see the test now on Jenkins, thanks for the link!