class_docstr: Tests for shared/rule_table.py
docstr: Rule Table - Staged Window
docstr_tok: ["Rule","Table","-","Staged","Window"]
code: def test_staged_window(self, date_mock):
      """Rule Table - Staged Window"""
      date_mock.utcnow.return_value = datetime(
          year=2001,
          month=1,
          day=1,
          hour=12,
          minute=0,
          second=10,
          microsecond=123456,
      )
  
      staged_at, staged_until = self.rule_table._staged_window()
      assert_equal(staged_at, "2001-01-01T12:00:10.123456Z")
      assert_equal(staged_until, "2001-01-03T12:00:10.123456Z")
  
imports: from datetime import datetime
  import os
  from io import StringIO
  from botocore.exceptions import ClientError
  from mock import Mock, patch
  from moto import mock_dynamodb2
  from nose.tools import assert_equal, assert_not_equal, assert_raises
  from streamalert.shared import rule, rule_table
  from tests.unit.helpers.aws_mocks import setup_mock_rules_table
label_desc: Use image node_id 19 for calling the TestRuleTable obj's underlying member method code with example usage: obj.test_staged_window(date_mock) without return types