code: def test_probe_operating_system_windows(self, mock):
      mock.platform = "win32"
      self.assertEqual(probe_operating_system(), "win32")
  
imports: import unittest
  from unittest.mock import MagicMock, mock_open, patch
  from artifact_repository import *
label_desc: Use image node_id 8 for calling the TestArtifactRepositoryTool obj's underlying member method code with example usage: obj.test_probe_operating_system_windows(mock) without return types