code: def test_encoder_on_cpu(self):
      self.check_encoder_on_device("cpu")
  
file_path: lightwood/tests/unit_tests/encoder/categorical/test_autoencoder.py
imports: import unittest
  from lightwood.encoder.categorical import CategoricalAutoEncoder
  import string
  import random
  import logging
  import numpy
  import pandas
  from sklearn.metrics import accuracy_score
  import torch
  from lightwood.helpers.log import log
label_desc: Use image node_id 5 for calling the TestAutoencoder obj's underlying member method code with example usage: obj.test_encoder_on_cpu() without return types