class_docstr: Tests correctness of the Y = scale @ x transformation.
class_docstr_tok: ["Tests","correctness","of","the","Y","=","scale","@","x","transformation","."]
code: def testScalarCongruencyLogScale(self, dtype):
      bijector = scale_lib.Scale(log_scale=dtype(np.log(0.42)))
      bijector_test_util.assert_scalar_congruency(
          bijector,
          lower_x=dtype(-2.0),
          upper_x=dtype(2.0),
          eval_func=self.evaluate,
      )
  
imports: from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import bijector_test_util
  from tensorflow_probability.python.bijectors import scale
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import gradient
label_desc: Use image node_id 6 for calling the ScaleBijectorTest obj's underlying member method code with example usage: obj.testScalarCongruencyLogScale(dtype) without return types