docstr: Tests that Jacobian is correct.
docstr_tok: ["Tests","that","Jacobian","is","correct","."]
code: def test_triangulate_jacobian_is_correct(self):
      """Tests that Jacobian is correct."""
      self._generate_random_example()
  
      self.assert_jacobian_is_correct_fn(
          lambda x: ray.triangulate(x, self.endpoints, self.weights),
          [self.startpoints_values],
      )
      self.assert_jacobian_is_correct_fn(
          lambda x: ray.triangulate(self.startpoints, x, self.weights),
          [self.endpoints_values],
      )
      self.assert_jacobian_is_correct_fn(
          lambda x: ray.triangulate(
              self.startpoints, self.endpoints, x
          ),
          [self.weights_values],
      )
  
imports: import sys
  from absl import flags
  from absl.testing import flagsaver
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_graphics.geometry.representation import ray
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 10 for calling the RayTest obj's underlying member method code with example usage: obj.test_triangulate_jacobian_is_correct() without return types