code: def test_cuda_device(device):
      model = TopModule()
  
      model.cuda(device)
  
      device = model.device
      assert device.type == "cuda"
      assert device.index is not None
      assert device.index == torch.cuda.current_device()
  
imports: import pytest
  import torch
  from lightning.fabric.utilities.device_dtype_mixin import _DeviceDtypeModuleMixin
  from torch import nn
  from tests_fabric.helpers.runif import RunIf
label_desc: Use image node_id 2 for calling a global function with example usage: test_cuda_device(device) without return types