code: def test_getitem_longtensor(self) -> None:
      self.assertEqual(
          EdgeList(
              EntityList.from_tensor(
                  torch.tensor([3, 4, 1, 0], dtype=torch.long)
              ),
              EntityList.from_tensor(
                  torch.tensor([0, 2, 1, 3], dtype=torch.long)
              ),
              torch.tensor([1, 1, 3, 0], dtype=torch.long),
          )[torch.tensor([2, 0])],
          EdgeList(
              EntityList.from_tensor(
                  torch.tensor([1, 3], dtype=torch.long)
              ),
              EntityList.from_tensor(
                  torch.tensor([1, 0], dtype=torch.long)
              ),
              torch.tensor([3, 1], dtype=torch.long),
          ),
      )
  
imports: from unittest import main, TestCase
  import torch
  from torchbiggraph.edgelist import EdgeList
  from torchbiggraph.entitylist import EntityList
label_desc: Use image node_id 15 for calling the TestEdgeList obj's underlying member method code with example usage: obj.test_getitem_longtensor() without return types