code: def test_items(self):
      expected = dict(self.p.items())
      expected.update(self.s)
      assert sorted(self.av.items()) == sorted(expected.items())
  
imports: import pickle
  import pytest
  import networkx
label_desc: Use image node_id 7 for calling the TestUnionAtlas obj's underlying member method code with example usage: obj.test_items() without return types