code: def test_auto_device_count():
      assert CPUAccelerator.auto_device_count() == 1
  
file_path: pytorch-lightning/tests/tests_fabric/accelerators/test_cpu.py
imports: import pytest
  import torch
  from lightning.fabric.accelerators.cpu import CPUAccelerator, _parse_cpu_cores
label_desc: Use image node_id 1 for calling a global function with example usage: test_auto_device_count() without return types