code: def test_check_missing_key(self):
      config = {"a": "b"}
      self.assertRaises(
          KeyError, utils.check_missing_key, config, "missing", "test"
      )
  
file_path: auptimizer/tests/test_utils.py
imports: import unittest
  import os
  import sys
  from six import StringIO
  from aup import utils
  import tempfile
label_desc: Use image node_id 1 for calling the UtilTestCase obj's underlying member method code with example usage: obj.test_check_missing_key() without return types