code: def test_set_cuda_device(_, set_device_mock):
      device = torch.device("cuda", 1)
      CUDAAccelerator().setup_device(device)
      set_device_mock.assert_called_once_with(device)
  
file_path: pytorch-lightning/tests/tests_fabric/accelerators/test_cuda.py
imports: import importlib
  import logging
  import os
  from re import escape
  from unittest import mock
  from unittest.mock import Mock
  import lightning.fabric
  import pytest
  import torch
  from lightning.fabric.accelerators.cuda import CUDAAccelerator, _check_cuda_matmul_precision, find_usable_cuda_devices, is_cuda_available, num_cuda_devices
  from tests_fabric.helpers.runif import RunIf
label_desc: Use image node_id 5 for calling a global function with example usage: test_set_cuda_device(_, set_device_mock) without return types