code: def test_uninitialized():
      with pytest.raises(RuntimeError):
          ray.experimental.get_object_locations([])
  
file_path: ray/python/ray/tests/test_get_locations.py
imports: import time
  import numpy
  import pytest
  import ray
label_desc: Use image node_id 1 for calling a global function with example usage: test_uninitialized() without return types