MIN: restructure odim.py/gamic.py, add test_odim.py/test_gamic.py

[kmuehlbauer]

Restructure and add tests for _OdimH5NetCDFMetadata/_GamicH5NetCDFMetadata. Refactor out _H5NetCDFMetadata as parent class.

• Tests added
• Changes are documented in history.md

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.91%. Comparing base (236bafd) to head (cb3ab83).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #154      +/-   ##
==========================================
+ Coverage   88.33%   89.91%   +1.57%     
==========================================
  Files          20       20              
  Lines        3439     3421      -18     
==========================================
+ Hits         3038     3076      +38     
+ Misses        401      345      -56     

Flag	Coverage Δ
notebooktests	0.00% <0.00%> (?)
unittests	89.91% <100.00%> (+1.57%)	⬆️

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[mgrover1]

@kmuehlbauer let me know when you need a review here!

[kmuehlbauer]

Thanks @mgrover1, it's still in the works. Combining this with gamic.py. I'll let you know, when this is ready for review.

[mgrover1]

Sounds good :) exciting stuff!

[kmuehlbauer]

@mgrover1 This is ready for review. Essentially this is just a heavy refactor of the odim/gamic backend code with added tests.

Test coverage increased by almost 1%. When this is merged I'll try to cover the last missing lines (at least for odim/gamic).

[kmuehlbauer]

@mgrover1 Pushed some more code which fit's in here. I'll leave this now as is for your review.

[mgrover1]

@kmuehlbauer - this looks great. I like the way this is refactored, I think it really helps remove some of the duplication here. Thanks for also adding those more accurate dates across here.

[kmuehlbauer]

Thanks @mgrover1, let's get this refactor in. The next changes won't be that voluminous.