def test_inconsistency_assumptions(self):
"""Test basic inconsistency() behavior.
(1) a hypothesis with 3 inconsistent ratings is less consistent than a hypothesis with 2 inconsistent ratings,
regardless of whether N/A or Neutral is one of the other ratings.
(2) a hypothesis with a very inconsistent rating is more inconsistent than a hypothesis with not just
inconsistent ratings
"""
h1 = inconsistency([
[Eval.very_consistent],
[Eval.not_applicable],
[Eval.inconsistent],
[Eval.inconsistent],
])
h2 = inconsistency([
[Eval.inconsistent],
[Eval.inconsistent],
[Eval.neutral],
[Eval.inconsistent],
])
h3 = inconsistency([
[Eval.neutral],
[Eval.not_applicable],
[Eval.very_consistent],
[Eval.very_inconsistent],
])
self.assertLess(h1, h2)
self.assertLess(h2, h3)
def test_inconsistent_evidence_has_nonzero_inconsistency(self):
"""Test that inconsistency() returns more than 0.0 when a evaluation is neutral or more consistent."""
for vote in [Eval.very_inconsistent, Eval.inconsistent]:
self.assertGreater(inconsistency([[vote]]), 0.0)
def test_consistent_evidence_has_zero_inconsistency(self):
"""Test that inconsistency() returns 0.0 when a evaluation is neutral or more consistent."""
for vote in [Eval.neutral, Eval.consistent, Eval.very_consistent]:
self.assertEqual(inconsistency([[vote]]), 0.0)
def test_no_evidence_has_zero_inconsistency(self):
"""Test that inconsistency() returns 0.0 when there is no evidence."""
self.assertEqual(inconsistency([]), 0.0)
def test_very_inconsistent_implies_more_inconsistent(self):
"""Test that inconsistency() returns a higher value for a hypothesis that has an inconsistent rating."""
h1 = inconsistency([[Eval.consistent], [Eval.inconsistent]])
h2 = inconsistency([[Eval.very_inconsistent], [Eval.inconsistent]])
self.assertLess(h1, h2)