code: def test_one_node_graph():
      embedding_data = {0: []}
      check_embedding_data(embedding_data)
  
imports: import math
  import pytest
  import networkx
  from networkx.algorithms.planar_drawing import triangulate_embedding
label_desc: Use image node_id 5 for calling a global function with example usage: test_one_node_graph() without return types