code: def test_ascend_npu_accelerator_manager_api():
      assert Accelerator.get_resource_name() == "NPU"
      assert (
          Accelerator.get_visible_accelerator_ids_env_var()
          == "ASCEND_RT_VISIBLE_DEVICES"
      )
      assert Accelerator.validate_resource_request_quantity(0.5) == (
          True,
          None,
      )
      assert Accelerator.validate_resource_request_quantity(1) == (
          True,
          None,
      )
  
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 3 for calling a global function with example usage: test_ascend_npu_accelerator_manager_api() without return types