code: def test_sectional_curvature_value(self, n_points, atol):
      base_point = self.data_generator.random_point(n_points)
      tangent_vec_a = self.data_generator.random_tangent_vec(base_point)
      tangent_vec_b = self.data_generator.random_tangent_vec(base_point)
  
      res = self.space.metric.sectional_curvature(
          tangent_vec_a, tangent_vec_b, base_point
      )
      self.assertTrue(gs.all(gs.abs(res + 1 / 2) < atol))
  
imports: import pytest
  import geomstats.backend
  from geomstats.test_cases.geometry.pullback_metric import PullbackDiffeoMetricTestCase
label_desc: Use image node_id 2 for calling the UnivariateNormalMetricTestCase obj's underlying member method code with example usage: obj.test_sectional_curvature_value(n_points, atol) without return types