class_docstr: Class for handling testing of the app integration output batcher
docstr: Setup class before tests
docstr_tok: ["Setup","class","before","tests"]
code: def setup(self):
      """Setup class before tests"""
      # pylint: disable=attribute-defined-outside-init
      self.batcher = Batcher("duo_auth", "destination_func")
  
      # Use a mocked version of the Lambda client to patch out the instance client
      Batcher.LAMBDA_CLIENT = MockLambdaClient
  
file_path: streamalert/tests/unit/streamalert/apps/test_batcher.py
imports: import os
  from botocore.exceptions import ClientError
  from mock import patch
  from nose.tools import assert_equal, assert_false, assert_true, raises
  from streamalert.apps.batcher import Batcher
  from tests.unit.streamalert.apps.test_helpers import MockLambdaClient
label_desc: Use image node_id 1 for calling the TestAppBatcher obj's underlying member method code with example usage: obj.setup() without return types