class_docstr: Test class for AppConfig
class_docstr_tok: ["Test","class","for","AppConfig"]
docstr: AppConfig - Determine Last Timestamp, No Format
docstr_tok: ["AppConfig","-","Determine","Last","Timestamp",",","No","Format"]
code: def test_determine_last_time_no_format(self, time_mock):
      """AppConfig - Determine Last Timestamp, No Format"""
      self._config.last_timestamp = None
      time_mock.return_value = 1000
      expected_result = 400
      result = self._config._determine_last_time(None)
      assert_equal(result, expected_result)
  
imports: import json
  import os
  import boto3
  from botocore.exceptions import ClientError
  from mock import patch
  from moto import mock_ssm
  from nose.tools import assert_equal, assert_false, assert_true, assert_dict_equal, raises
  from streamalert.apps.config import AppConfig
  from streamalert.apps.exceptions import AppAuthError, AppConfigError, AppStateError
  from tests.unit.streamalert.apps.test_helpers import get_event, put_mock_params
  from tests.unit.streamalert.shared.test_config import get_mock_lambda_context
label_desc: Use image node_id 9 for calling the TestAppConfig obj's underlying member method code with example usage: obj.test_determine_last_time_no_format(time_mock) without return types