class_docstr: Tests for rule_promotion/promoter.py:RulePromoter
docstr: Helper function to add a few fake alert statistic objects
docstr_tok: ["Helper","function","to","add","a","few","fake","alert","statistic","objects"]
code: def _add_fake_stats(self):
      """Helper function to add a few fake alert statistic objects"""
      time = datetime(year=2000, month=1, day=1, hour=1, second=1)
      self.promoter._staging_stats.update(
          {
              "test_rule": StagingStatistic(
                  time, time + timedelta(days=2), time, "test_rule"
              ),
              "test_rule_2": StagingStatistic(
                  time, time + timedelta(days=2), time, "test_rule_2"
              ),
          }
      )
  
imports: from datetime import datetime, timedelta
  import os
  from boto3 import client
  from mock import Mock, patch, PropertyMock
  from moto import mock_dynamodb2
  from nose.tools import assert_equal
  from streamalert.rule_promotion.promoter import RulePromoter
  from streamalert.rule_promotion.statistic import StagingStatistic
  from streamalert.shared import config, rule
  from tests.unit.helpers.aws_mocks import MockAthenaClient, setup_mock_rules_table
label_desc: Use image node_id 3 for calling the TestRulePromoter obj's underlying member method code with example usage: obj._add_fake_stats() without return types