class_docstr: Class for testing firehose generation code
class_docstr_tok: ["Class","for","testing","firehose","generation","code"]
code: def _get_expected_schema():
      return [
          ("nested_key_01", "string"),
          ("nested_key_02", "string"),
          (
              "streamalert:envelope_keys",
              "struct<env_key_01:string,env_key_02:string>",
          ),
      ]
  
file_path: streamalert/tests/unit/streamalert_cli/terraform/test_firehose.py
imports: from nose.tools import assert_equal
  from streamalert_cli.config import CLIConfig
  from streamalert_cli.terraform import common, firehose
label_desc: Use image node_id 2 for calling the TestFirehoseGenerate obj's underlying member method code with example usage: obj._get_expected_schema() and returns: list