code: def test_not_enough_aggregations(self, use_num_aggregations):
      weights = num_aggregations = None
      if use_num_aggregations:
          num_aggregations = 2
      else:
          weights = [1, 1]  # 2 aggregations
      budget_accountant = NaiveBudgetAccountant(
          total_epsilon=1,
          total_delta=1e-6,
          num_aggregations=num_aggregations,
          aggregation_weights=weights,
      )
  
      budget_accountant._compute_budget_for_aggregation(1)
      with self.assertRaises(ValueError):
          # num_aggregations = 2, but only 1 aggregation_scope was created
          budget_accountant.compute_budgets()
  
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 11 for calling the NaiveBudgetAccountantTest obj's underlying member method code with example usage: obj.test_not_enough_aggregations(use_num_aggregations) without return types