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# Copyright (c) 2024, the cclib development team
#
# This file is part of cclib (http://cclib.github.io) and is distributed under
# the terms of the BSD 3-Clause License.
"""Test logfiles with (non)linear response output in cclib"""
import numpy
from skip import skipForParser
class GenericPolarTest:
"""Generic static polarizability unittest"""
@skipForParser("Molcas", "The parser is still being developed so we skip this test")
@skipForParser("Turbomole", "The parser is still being developed so we skip this test")
def testshape(self, data) -> None:
"""Is the dimension of the polarizability tensor 3 x 3?"""
assert len(data.polarizabilities) == 1
assert data.polarizabilities[0].shape == (3, 3)
class ReferencePolarTest(GenericPolarTest):
"""Customized static polarizability unittest"""
# Reference values are from DALTON2015/Trp_polar_abalnr.out
isotropic = 74.12424
principal_components = [30.29431523, 91.5361917, 100.54220307]
isotropic_delta = 0.01
principal_components_delta = 0.01
@skipForParser("Molcas", "The parser is still being developed so we skip this test")
@skipForParser("Turbomole", "The parser is still being developed so we skip this test")
def testisotropic(self, data) -> None:
"""Is the isotropic polarizability (average of the diagonal elements)
+/- 0.01 from a reference?
"""
isotropic = numpy.average(numpy.diag(data.polarizabilities[0]))
assert abs(isotropic - self.isotropic) < self.isotropic_delta
@skipForParser("Molcas", "The parser is still being developed so we skip this test")
@skipForParser("Turbomole", "The parser is still being developed so we skip this test")
def testprincomponents(self, data) -> None:
"""Are each of the principal components (eigenvalues) of the
polarizability tensor +/- 0.01 from a reference?
"""
principal_components = numpy.linalg.eigvalsh(data.polarizabilities[0])
for c in range(3):
assert (
abs(principal_components[c] - self.principal_components[c])
< self.principal_components_delta
)
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