code: def test_raise_on_bad_dtype(self, dtype):
      with self.assertRaises(ValueError):
          _ = discrete_gaussian_utils.sample_discrete_gaussian(
              1, (1,), dtype
          )
  
imports: import collections
  import fractions
  import math
  import random
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tensorflow_privacy.privacy.dp_query import discrete_gaussian_utils
label_desc: Use image node_id 1 for calling the DiscreteGaussianUtilsTest obj's underlying member method code with example usage: obj.test_raise_on_bad_dtype(dtype) without return types