Determine if scipy or pytest responsible for version-specific failure

[cadeduckworth]

MDPOW/mdpow/tests/test_automated_dihedral_analysis.py

Line 178 in 525f2cf

@pytest.mark.skipif(sys.version_info < (3, 8), reason="scipy circvar gives wrong answers")

[cadeduckworth]

This needs to be figured out for at least two existing tests in this module.

[cadeduckworth]

currently documented in the tests as:

# the following 'reason' affects every downstream function that relies
# on the atom indices returned for dihedral atom group selections
# issue raised (#239) to identify and resolve exact package/version responsible
@pytest.mark.skipif(sys.version_info < (3, 8), reason='pytest=7.2.0, build=py37h89c1867_0, '
'returns incorrect atom_indices for dihedral atom group selections')

appears to be related to atom indices of dihedral atom group selections

[orbeckst]

This issue will become moot with PR #249 (drop Python 3.7).