code: def test_getitem(self):
      assert self.adjview[1] is not self.s[1]
      assert self.adjview[3][0] is self.adjview[0][3]
      assert self.adjview[2][3]["color"] == 1
      pytest.raises(KeyError, self.adjview.__getitem__, 4)
  
imports: import pickle
  import pytest
  import networkx
label_desc: Use image node_id 5 for calling the TestUnionAdjacency obj's underlying member method code with example usage: obj.test_getitem() without return types