Fix test

[peterdudfield]

Pull Request

Description

• fix tests for location validation
• split pvnet tests

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
• [ ] 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 #204 (ca78491) into main (6edcfce) will increase coverage by 0.09%. The diff coverage is 97.91%.

@@            Coverage Diff             @@
##             main     #204      +/-   ##
==========================================
+ Coverage   81.12%   81.22%   +0.09%     
==========================================
  Files         128      128              
  Lines        5463     5508      +45     
==========================================
+ Hits         4432     4474      +42     
- Misses       1031     1034       +3     

Impacted Files	Coverage Δ
ocf_datapipes/select/select_spatial_slice.py	86.66% <ø> (ø)
ocf_datapipes/select/select_time_slice.py	100.00% <ø> (ø)
...cf_datapipes/transform/numpy/batch/sun_position.py	84.00% <ø> (ø)
ocf_datapipes/load/nwp/nwp.py	97.72% <66.66%> (-2.28%)	:arrow_down:
ocf_datapipes/training/pvnet.py	80.25% <100.00%> (+1.06%)	:arrow_up:
ocf_datapipes/utils/consts.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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