More robust position_control overlay and stricter warnings during tests

[eldond]

• position_control overlays:
  • Don't fail the whole overlay if just one out of boundary, strike, or X-point is missing
  • Fail if they're all missing
  • Allows plotting of boundary even if X-point and strike point are missing
• testing:
  • Was experiencing a bad interaction between OMAS and OMFIT imports. Upgraded the warnings to try to catch it.

[codecov[bot]]

Codecov Report

Merging #94 into master will increase coverage by 0.18%. The diff coverage is 98.73%.

@@            Coverage Diff             @@
##           master      #94      +/-   ##
==========================================
+ Coverage   79.65%   79.84%   +0.18%     
==========================================
  Files          44       45       +1     
  Lines        7796     7869      +73     
==========================================
+ Hits         6210     6283      +73     
  Misses       1586     1586

Impacted Files	Coverage Δ
omas/omas_core.py	86.13% <ø> (ø)	:arrow_up:
omas/tests/test_omas_suite.py	67.56% <100%> (+0.44%)	:arrow_up:
omas/tests/warning_setup.py	100% <100%> (ø)
omas/omas_plot.py	73.31% <100%> (+0.15%)	:arrow_up:
omas/tests/test_omas_plot.py	99.28% <100%> (ø)	:arrow_up:
omas/tests/test_omas_physics.py	96% <100%> (+0.18%)	:arrow_up:
omas/tests/test_omas_utils.py	98.29% <100%> (+0.17%)	:arrow_up:
omas/tests/test_omas_core.py	96.35% <100%> (+0.22%)	:arrow_up:
omas/tests/failed_imports.py	84.44% <88.88%> (+1.51%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 7cf1749...fd58ba2. Read the comment docs.