code: def test_spence_gradient_at_one(self):
      analytical, _ = gradient_checker_v2.compute_gradient(
          special_math_ops.spence, [1.0]
      )
      self.assertAllClose([[[-1.0]]], analytical)
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.framework.weak_tensor import WeakTensor
  from tensorflow.python.ops import gradient_checker_v2
  from tensorflow.python.ops import special_math_ops
  from tensorflow.python.ops import weak_tensor_ops
  from tensorflow.python.ops import weak_tensor_test_util
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 5 for calling the SpenceTest obj's underlying member method code with example usage: obj.test_spence_gradient_at_one() without return types