code: def test_getitem(self):
      d = self.reference
      self.assertEqual(
          d[next(iter(self.inmapping.keys()))],
          next(iter(self.inmapping.values())),
      )
  
      self.assertRaises(TypeError, d.__getitem__)
  
imports: import copy
  import gc
  import random
  import threading
  import unittest
  import torch
  from torch.testing._internal.common_utils import find_library_location, IS_FBCODE, IS_MACOS, IS_SANDCASTLE, IS_WINDOWS, run_tests, TestCase
  from torch.utils.weak import _WeakHashRef, WeakIdKeyDictionary
label_desc: Use image node_id 14 for calling the WeakKeyDictionaryScriptObjectTestCase obj's underlying member method code with example usage: obj.test_getitem() without return types