class_docstr: Tests correctness of the cumsum bijector.
class_docstr_tok: ["Tests","correctness","of","the","cumsum","bijector","."]
code: def testBijectiveAndFinite(self):
      bijector = cumsum.Cumsum(validate_args=True)
      x = np.linspace(-10, 10, num=10).astype(np.float32)
      y = np.cumsum(x, axis=-1)
      bijector_test_util.assert_bijective_and_finite(
          bijector, x, y, eval_func=self.evaluate, event_ndims=1
      )
  
file_path: probability/tensorflow_probability/python/bijectors/cumsum_test.py
imports: import numpy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import bijector_test_util
  from tensorflow_probability.python.bijectors import cumsum
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 3 for calling the _CumsumBijectorTest obj's underlying member method code with example usage: obj.testBijectiveAndFinite() without return types