Issue/fix tests

[peterdudfield]

Pull Request

Description

• fix tests
• move tests to pytest
• upgrade datamodel, so adjust_mw is saved

How Has This Been Tested?

CI tests

• [x] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

Merging #187 (2db30bf) into main (4a97992) will increase coverage by 0.02%. The diff coverage is 100.00%.

:exclamation: Current head 2db30bf differs from pull request most recent head 6bba57c. Consider uploading reports for the commit 6bba57c to get more accurate results

@@            Coverage Diff             @@
##             main     #187      +/-   ##
==========================================
+ Coverage   90.66%   90.68%   +0.02%     
==========================================
  Files          15       15              
  Lines         739      741       +2     
==========================================
+ Hits          670      672       +2     
  Misses         69       69              

Impacted Files	Coverage Δ
nowcasting_forecast/models/cnn/model.py	98.01% <ø> (ø)
nowcasting_forecast/models/nwp_solar_simple.py	96.66% <ø> (ø)
nowcasting_forecast/models/sun.py	100.00% <ø> (ø)
nowcasting_forecast/__init__.py	100.00% <100.00%> (ø)
nowcasting_forecast/app.py	86.95% <100.00%> (ø)
nowcasting_forecast/models/cnn/cnn.py	97.14% <100.00%> (ø)
nowcasting_forecast/models/utils.py	92.06% <100.00%> (+0.12%)	:arrow_up:

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[peterdudfield]

this was for. - https://github.com/openclimatefix/nowcasting_forecast/issues/186