code: def test_triad_graph():
      G = triad_graph("030T")
      assert [tuple(e) for e in ("ab", "ac", "cb")] == sorted(G.edges())
  
imports: import pytest
  from networkx import triad_graph
label_desc: Use image node_id 1 for calling a global function with example usage: test_triad_graph() without return types