class_docstr: Test class for FirehoseClient
docstr: FirehoseClient - Enabled Log Source
code: def test_enabled_log_source(self):
      """FirehoseClient - Enabled Log Source"""
      log = "enabled_log"
      FirehoseClient._ENABLED_LOGS = {log: "enabled:log"}
      assert_equal(FirehoseClient.enabled_log_source(log), True)
  
imports: from botocore.exceptions import ClientError
  from mock import Mock, patch
  from nose.tools import assert_equal
  from streamalert.shared.firehose import FirehoseClient
label_desc: Use image node_id 20 for calling the TestFirehoseClient obj's underlying member method code with example usage: obj.test_enabled_log_source() without return types