code: def test_randomness_cpu(self):
      device = torch.device("cpu")
      self._test_randomness(device)
  
file_path: pfrl/tests/nn_tests/test_noisy_linear.py
imports: import numpy
  import pytest
  import torch
  from pfrl.nn import noisy_linear
label_desc: Use image node_id 7 for calling the TestFactorizedNoisyLinear obj's underlying member method code with example usage: obj.test_randomness_cpu() without return types