docstr: Tests the Jacobian of the dot product.
docstr_tok: ["Tests","the","Jacobian","of","the","dot","product","."]
code: def test_dot_jacobian_preset(self, u_init, v_init):
      """Tests the Jacobian of the dot product."""
      self.assert_jacobian_is_correct_fn(vector.dot, [u_init, v_init])
  
imports: from absl.testing import flagsaver
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_graphics.geometry.transformation.tests import test_data
  from tensorflow_graphics.math import vector
  from tensorflow_graphics.util import test_case
label_desc: Use image node_id 9 for calling the VectorTest obj's underlying member method code with example usage: obj.test_dot_jacobian_preset(u_init, v_init) without return types