code: def test_repr(self):
      out = f"{self.av.__class__.__name__}({self.s}, {self.p})"
      assert repr(self.av) == out
  
imports: import pickle
  import pytest
  import networkx
label_desc: Use image node_id 9 for calling the TestUnionAtlas obj's underlying member method code with example usage: obj.test_repr() without return types