class_docstr: Test class for OutputDispatcher
docstr: Setup before each method
docstr_tok: ["Setup","before","each","method"]
code: def setup(self):
      """Setup before each method"""
      self._dispatcher = OutputDispatcher(CONFIG)
      self._descriptor = "desc_test"
  
imports: from mock import Mock, patch, MagicMock
  from moto import mock_kms, mock_ssm
  from nose.tools import assert_equal, assert_is_instance, assert_is_not_none, assert_is_none, assert_count_equal
  from requests.exceptions import Timeout
  from streamalert.alert_processor.outputs.output_base import OutputDispatcher, OutputProperty, OutputRequestFailure, StreamAlertOutput
  from streamalert.alert_processor.outputs.aws import S3Output
  from tests.unit.streamalert.alert_processor import CONFIG, KMS_ALIAS, MOCK_ENV, REGION, PREFIX
  from tests.unit.streamalert.alert_processor.helpers import put_mock_ssm_parameters
label_desc: Use image node_id 1 for calling the TestOutputDispatcher obj's underlying member method code with example usage: obj.setup() without return types