code: def test_valid_cert(self):
      path = os.path.join(self.resources_path, "valid.crt")
      validate_cert(path)
  
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 5 for calling the TestCertificateValidation obj's underlying member method code with example usage: obj.test_valid_cert() without return types