code: def test_peephole_add_zero(self):
      @torch.jit.script
      def foo(x: int):
          return x + 0, 0 + x
  
      self.run_pass("peephole", foo.graph)
      FileCheck().check_not("aten::add")
      self.assertEqual(foo(3), (3, 3))
  
imports: import torch
  from torch.testing._internal.jit_utils import JitTestCase, RUN_CUDA, _inline_everything
  from torch import nn
  from torch.testing import FileCheck
  from typing import Callable, List
  import unittest
label_desc: Use image node_id 17 for calling the TestPeephole obj's underlying member method code with example usage: obj.test_peephole_add_zero() and returns: unknown,  unknown