code: def assertValidateCertRaisesRuntimeError(
      self, expected_message, path
  ):
      with self.assertRaises(RuntimeError) as err:
          validate_cert(path)
      self.assertEqual(err.exception.args[0], expected_message)
  
imports: import os
  import unittest
  from tempfile import NamedTemporaryFile
  import tabpy
  from tabpy.tabpy_server.app.util import validate_cert
  from tabpy.tabpy_server.app.app import TabPyApp
  from unittest.mock import patch
label_desc: Use image node_id 1 for calling the TestCertificateValidation obj's underlying member method code with example usage: obj.assertValidateCertRaisesRuntimeError(expected_message, path) without return types