code: def test_set_env_id_exports_environment_variable(self):
      env_id = set_env_id()
  
      assert os.environ[ENV_ID_ENVIRON_KEY] == env_id
  
file_path: airflow/tests/providers/amazon/aws/system/utils/test_helpers.py
imports: from __future__ import annotations
  import os
  import sys
  from io import StringIO
  from unittest.mock import ANY, patch
  import pytest
  from moto import mock_ssm
  from tests.system.providers.amazon.aws import utils
  from tests.system.providers.amazon.aws.utils import DEFAULT_ENV_ID_LEN, DEFAULT_ENV_ID_PREFIX, ENV_ID_ENVIRON_KEY, INVALID_ENV_ID_MSG, LOWERCASE_ENV_ID_MSG, NO_VALUE_MSG, _validate_env_id, set_env_id
label_desc: Use image node_id 5 for calling the TestAmazonSystemTestHelpers obj's underlying member method code with example usage: obj.test_set_env_id_exports_environment_variable() without return types