preFoil import fix

[eytanadler]

Purpose

This PR changes the DVGeometryCST imports and tests to behave like the other specialized parameterizations. The purpose is to avoid adding prefoil as a dependency even though it is required for DVGeometryCST (same idea as pyOCSM for DVGeometryESP, for example). Addresses #147.

Expected time until merged

Yesterday

Type of change

• [x] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (non-backwards-compatible fix or feature)
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no API changes)
• [ ] Documentation update
• [ ] Maintenance update
• [ ] Other (please describe)

Testing

Checklist

• [ ] I have run flake8 and black to make sure the code adheres to PEP-8 and is consistently formatted
• [ ] I have run unit and regression tests which pass locally with my changes
• [ ] I have added new tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation

[codecov[bot]]

Codecov Report

Merging #148 (d75370f) into main (d786ca8) will decrease coverage by 10.50%. The diff coverage is 53.84%.

@@             Coverage Diff             @@
##             main     #148       +/-   ##
===========================================
- Coverage   63.75%   53.24%   -10.51%     
===========================================
  Files          47       47               
  Lines       11667    11676        +9     
===========================================
- Hits         7438     6217     -1221     
- Misses       4229     5459     +1230     

Impacted Files	Coverage Δ
pygeo/__init__.py	91.30% <50.00%> (+1.30%)	:arrow_up:
pygeo/parameterization/__init__.py	88.88% <50.00%> (+2.22%)	:arrow_up:
pygeo/parameterization/DVGeoCST.py	88.78% <60.00%> (-0.41%)	:arrow_down:
pygeo/parameterization/DVGeoMulti.py	0.40% <0.00%> (-89.42%)	:arrow_down:
pygeo/constraints/areaConstraint.py	50.50% <0.00%> (-25.42%)	:arrow_down:
pygeo/constraints/DVCon.py	68.04% <0.00%> (-3.69%)	:arrow_down:
pygeo/pyBlock.py	45.37% <0.00%> (-1.65%)	:arrow_down:
pygeo/parameterization/DVGeo.py	64.15% <0.00%> (-0.50%)	:arrow_down:
pygeo/topology.py	54.92% <0.00%> (-0.23%)	:arrow_down:
... and 1 more

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[eytanadler]

Thanks for the prompt PR. To get this to work though, this file also has to be changed:

https://github.com/mdolab/pygeo/blob/d786ca844e8bb2de82de9ec52ebb7d1ddf3504e5/pygeo/parameterization/__init__.py#L3

Good catch