TST: Splitting conftest.py into several smaller files.

[lucasfourier]

Pull request type

• Code changes (bugfix, features)
• Code maintenance (refactoring, formatting, tests)
• ReadMe, Docs and GitHub updates
• Other (please describe):

Checklist

• Tests for the changes have been added (if needed)
• Docs have been reviewed and added / updated
• Lint (black rocketpy/ tests/) has passed locally
• All tests (pytest tests -m slow --runslow) have passed locally
• CHANGELOG.md has been updated (if relevant)

Current behavior

Currently, conftest.py is unique and top level within the tests directory. However, as observed by @Gui-FernandesBR in #447, the file was getting too big to be properly maintained.

New behavior

Several .py modules were created in order to split the fixtures into modules which results in easier maintenance and proper organization.

Breaking change

• Yes
• No

Additional information

A bit more info regarding this can be found here:
https://stackoverflow.com/questions/27064004/splitting-a-conftest-py-file-into-several-smaller-conftest-like-parts

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9da1542) 72.47% compared to head (79aa3b6) 72.47%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #556   +/-   ##
========================================
  Coverage    72.47%   72.47%           
========================================
  Files           59       59           
  Lines         9567     9567           
========================================
  Hits          6934     6934           
  Misses        2633     2633           

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[Gui-FernandesBR]

Good work, the new structure is just way better than the current one. more robust and scalable.

Please discuss on the comments I've added and let me know if there's something not so clear.

Can you apply black before commiting? Out Makefile has been updated recently if you wanna use the make black command.

Also, can you confirm the slow tests are passing locally?

Once again, good work here!

[Gui-FernandesBR]

Thank you again for your effort, I really appreciate it, @lucasfourier .

I've added a few more comments on what I think is not ideal yet, could you check it out please?

[Gui-FernandesBR]

Great PR, thank you so much for your contribution, @lucasfourier !!

Tests are now more organized and faster.

You can merge this PR once the tests are all green in github actions. Also, please feel free to close the issue associated with this PR.