class_docstr: Classifier tests
code: def _mock_global(cls):
      return {
          "account": {"prefix": "unit-test"},
          "infrastructure": {
              "firehose": {
                  "enabled": True,
                  "enabled_logs": {"log_type_01": None},
              }
          },
      }
  
imports: from collections import OrderedDict
  import os
  from mock import Mock, patch
  from nose.tools import assert_equal, assert_raises
  import streamalert.classifier.classifier
  from streamalert.classifier.classifier import Classifier
  from streamalert.shared.exceptions import ConfigError
label_desc: Use image node_id 6 for calling the TestClassifier obj's underlying member method code with example usage: obj._mock_global(cls) and returns: dict