Move tests folder to top and use pytest to run all tests

[bobleesj]

43 tests are passing, same as before and after moving the tests.

Run via:

pytest

...

43 passed, 2 warnings in 0.43s 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (3d94e42) to head (19a7da8).
Report is 29 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #96       +/-   ##
==========================================
- Coverage   65.35%   0.00%   -65.36%     
==========================================
  Files          18      10        -8     
  Lines         915     638      -277     
==========================================
- Hits          598       0      -598     
- Misses        317     638      +321     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[bobleesj]

Trick to use @pytest.fixture within unittest class

Source: https://stackoverflow.com/a/66222108

[bobleesj]

pytest automatically detects files starting with test_.

[bobleesj]

Please review!

[bobleesj]

============================= test session starts ==============================

plugins: mock-3.14.0, env-1.1.3
collecting ... collected 43 items

tests/test_diffraction_objects.py::test_diffraction_objects_equality[inputs10-inputs20-True] PASSED [  2%]

...

tests/test_tools.py::test_get_package_info[inputs3-expected3] PASSED     [100%]

=============================== warnings summary ===============================

Seems like the tests are passing while we probably need to update codecov and other CI files.

Maybe shall we merge it a new branch like "folder" etc.? @sbillinge

[sbillinge]

The tests seem to still be in the src package. We want them all in tests at the top level, no?

When you move them please use git mv so got just updates the path and doesn't delete and add the whole file.

[bobleesj]

@sbillinge I think the test files have removed via git mv already. Could you please double-check?

[sbillinge]

@bobleesj this looks great, thanks. Sorry, before I was looking on my phone and didn't see the right-arrow showing the file move so I missed that it was all good.