code: def test_get_device_cuda(self):
      stream = current_stream(torch.device("cuda"))
      assert get_device(stream).type == "cuda"
  
imports: import pytest
  import torch
  from fairscale.nn.pipe.stream import CPUStream, current_stream, default_stream, get_device, is_cuda, new_stream, record_stream, use_device, use_stream, wait_stream
label_desc: Use image node_id 2 for calling the TestGetDevice obj's underlying member method code with example usage: obj.test_get_device_cuda() without return types