docstr: Test if the environment uses the editor port
  when no environment file is provided
docstr_tok: ["Test","if","the","environment","uses","the","editor","port","when","no","environment","file","is","provided"]
code: def test_port_editor(self, mock_unity3d):
      """Test if the environment uses the editor port
      when no environment file is provided"""
  
      _ = Unity3DEnv(port=None)
      args, kwargs = mock_unity3d.call_args
      mock_unity3d.assert_called_once()
      self.assertEqual(5004, kwargs.get("base_port"))
  
file_path: ray/python/ray/rllib/env/wrappers/tests/test_unity3d_env.py
imports: import unittest
  from unittest.mock import patch
  from ray.rllib.env.wrappers.unity3d_env import Unity3DEnv
label_desc: Use image node_id 1 for calling the TestUnity3DEnv obj's underlying member method code with example usage: obj.test_port_editor(mock_unity3d) without return types