code: def test_noise_not_calculated(self):
      with self.assertRaises(AssertionError):
          mechanism = MechanismSpec(MechanismType.LAPLACE)
          print(mechanism.noise_standard_deviation())
  
imports: import sys
  import unittest
  from dataclasses import dataclass
  from pipeline_dp.budget_accounting import MechanismSpec
  from pipeline_dp.aggregate_params import MechanismType
  from pipeline_dp.budget_accounting import NaiveBudgetAccountant
  from pipeline_dp.budget_accounting import PLDBudgetAccountant
  from absl.testing import parameterized
label_desc: Use image node_id 1 for calling the PLDBudgetAccountantTest obj's underlying member method code with example usage: obj.test_noise_not_calculated() without return types