code: def test_then_wrong_arg(self):
      def wrong_arg(tensor):
          return tensor + 1
  
      self._test_then_error(
          wrong_arg, "unsupported operand type.*Future.*int"
      )
  
imports: import threading
  import time
  import torch
  import unittest
  from torch.futures import Future
  from torch.testing._internal.common_utils import IS_WINDOWS, TestCase, TemporaryFileName, run_tests
  from typing import TypeVar
label_desc: Use image node_id 12 for calling the TestFuture obj's underlying member method code with example usage: obj.test_then_wrong_arg() and returns: unknown