code: def test_index(args, expected):
      assert Index(tensor_mock)[args] == expected
  
file_path: pyro/tests/ops/test_indexing.py
imports: import itertools
  import pytest
  import torch
  import pyro.distributions
  from pyro.distributions.util import broadcast_shape
  from pyro.ops.indexing import Index, Vindex
  from tests.common import assert_equal
label_desc: Use image node_id 5 for calling a global function with example usage: test_index(args, expected) without return types