code: def test_deleting_magic_methods(self):
      mock = Mock()
      self.assertFalse(hasattr(mock, "__getitem__"))
  
      mock.__getitem__ = Mock()
      self.assertTrue(hasattr(mock, "__getitem__"))
  
      del mock.__getitem__
      self.assertFalse(hasattr(mock, "__getitem__"))
  
imports: import math
  import unittest
  import os
  from asyncio import iscoroutinefunction
  from unittest.mock import AsyncMock, Mock, MagicMock, _magics
label_desc: Use image node_id 1 for calling the TestMockingMagicMethods obj's underlying member method code with example usage: obj.test_deleting_magic_methods() without return types