code: def test_autodetect_num_npus_without_devices(mock_glob):
      with patch.dict(sys.modules):
          sys.modules["acl"] = None
          mock_glob.side_effect = Exception
          assert Accelerator.get_current_node_num_accelerators() == 0
  
file_path: ray/python/ray/tests/accelerators/test_npu.py
imports: import os
  import sys
  import pytest
  from unittest.mock import patch
  import ray
  from ray._private.accelerators import NPUAcceleratorManager
label_desc: Use image node_id 2 for calling a global function with example usage: test_autodetect_num_npus_without_devices(mock_glob) without return types