code: def test_get_conn_params_should_fail_on_invalid_key(self):
      connection_kwargs = {
          **BASE_CONNECTION_KWARGS,
          "password": None,
          "extra": {
              "database": "db",
              "account": "airflow",
              "warehouse": "af_wh",
              "region": "af_region",
              "role": "af_role",
              "private_key_file": "/dev/urandom",
          },
      }
      with mock.patch.dict(
          "os.environ",
          AIRFLOW_CONN_TEST_CONN=Connection(
              **connection_kwargs
          ).get_uri(),
      ), pytest.raises(
          ValueError,
          match="The private_key_file path points to an empty or invalid file.",
      ):
          SnowflakeHook(snowflake_conn_id="test_conn").get_conn()
  
imports: from __future__ import annotations
  import json
  from copy import deepcopy
  from typing import TYPE_CHECKING, Any
  from unittest import mock
  import pytest
  from cryptography.hazmat.backends import default_backend
  from cryptography.hazmat.primitives import serialization
  from cryptography.hazmat.primitives.asymmetric import rsa
  from airflow.models import Connection
  from airflow.providers.snowflake.hooks.snowflake import SnowflakeHook
label_desc: Use image node_id 7 for calling the TestPytestSnowflakeHook obj's underlying member method code with example usage: obj.test_get_conn_params_should_fail_on_invalid_key() without return types