class_docstr: Test class for FirehoseClient
code: def _sample_payloads_long_log_name(self):
      return [
          Mock(
              log_schema_type=(
                  "very_very_very_long_log_stream_name_abcdefg_hijklmn_70_characters_long"
              ),
              parsed_records=[
                  {"unit_key_01": 1, "unit_key_02": "test"},
                  {"unit_key_01": 2, "unit_key_02": "test"},
              ],
          )
      ]
  
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 29 for calling the TestFirehoseClient obj's underlying member method code with example usage: obj._sample_payloads_long_log_name() and returns: list