def METHOD_NAME(
    env_name, env_value, feature_name, feature_value
):
    """Tests if function updates env variable in default."""
    with mock.patch.dict(os.environ, ({env_name: env_value})):
        dict_with_test_flags = FeatureFlag.get_feature_flags_from_env()
        assert feature_name in dict_with_test_flags
        assert dict_with_test_flags[feature_name] is feature_value