code: def test_items(self):
      BasicTestMappingProtocol.test_items(self)
  
      d = self._full_mapping({1: 2})
      self.assertEqual(list(d.items()), [(1, 2)])
  
imports: import unittest
  import collections
  from test.support import Py_C_RECURSION_LIMIT
label_desc: Use image node_id 5 for calling the TestMappingProtocol obj's underlying member method code with example usage: obj.test_items() without return types