def test_b_summand_is_positive_when_j_is_higher_comparison_point(self):
     res = b_summand(
         f=self.default_f,
         j=0,
         comparison=self.default_comparison,
         sigma=self.default_sigma,
     )
     self.assertAlmostEqual(res, .159290823)
 def test_b_summand_is_negative_when_j_is_lower_comparison_point(self):
     res = b_summand(
         f=self.default_f,
         j=2,
         comparison=self.default_comparison,
         sigma=self.default_sigma,
     )
     self.assertAlmostEqual(res, -.159290823)
 def test_b_summand_is_0_when_j_not_in_comparison(self):
     res = b_summand(
         f=self.default_f,
         j=1,
         comparison=self.default_comparison,
         sigma=self.default_sigma,
     )
     self.assertAlmostEqual(res, 0.0)