code: def test_locus_from_global_position_negative_pos():
      with pytest.raises(ValueError):
          hl.get_reference("GRCh37").locus_from_global_position(-1)
  
file_path: hail/hail/python/test/hail/genetics/test_reference_genome.py
imports: import pytest
  from random import randint
  import hail
  from hail.genetics import *
  from ..helpers import *
  from hail.utils import FatalError
label_desc: Use image node_id 8 for calling a global function with example usage: test_locus_from_global_position_negative_pos() without return types