def test_best_guess_with_partials(self):
r = Result()
r.sources = [Racer('100'), Racer('100'), Racer('10-', partial=True)]
self.assertEqual(r.best_guess(), '100')
# certainty would be 2/3 + (2/3 of 1/3)
self.assertEqual(r.certainty(), (2.0 / 3.0) + (2.0 / 9.0))
def test_best_guess_when_all_same(self):
r = Result()
r.sources = [Racer('100'), Racer('100'), Racer('100')]
self.assertEqual(r.best_guess(), '100')
self.assertEqual(r.certainty(), 1.0)
def test_best_guess_when_majority_rule(self):
r = Result()
r.sources = [Racer('100'), Racer('100'), Racer('101')]
self.assertEqual(r.best_guess(), '100')
self.assertEqual(r.certainty(), 2.0 / 3.0)
