Common test: Granular test

[ahcorde]

🎉 New feature

Summary

This PR is related to this comment #360 (comment)

Add granular tests to allow be more useful as people are incrementally implementing a plugin.

FYI @scpeters

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• 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 #364 (e6ca6eb) into main (6a507fb) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #364      +/-   ##
==========================================
+ Coverage   76.74%   76.77%   +0.03%     
==========================================
  Files         128      128              
  Lines        5628     5628              
==========================================
+ Hits         4319     4321       +2     
+ Misses       1309     1307       -2     

Impacted Files	Coverage Δ
tpe/plugin/src/EntityManagementFeatures.cc	83.98% <0.00%> (-1.46%)	⬇️
bullet/src/EntityManagementFeatures.cc	12.58% <0.00%> (+3.49%)	⬆️

---

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 6a507fb...e6ca6eb. Read the comment docs.

[scpeters]

yes, this will provide earlier feedback to people implementing plugin features

there is a bit of duplication in the tests, but I'm not sure how that would be removed