code: def test_items(self):
      d = self._empty_mapping()
      self.assertEqual(list(d.items()), [])
  
      self.assertRaises(TypeError, d.items, None)
  
imports: import unittest
  import collections
  from test.support import Py_C_RECURSION_LIMIT
label_desc: Use image node_id 11 for calling the BasicTestMappingProtocol obj's underlying member method code with example usage: obj.test_items() without return types