code: def test_triangulate_embedding1():
      embedding = nx.PlanarEmbedding()
      embedding.add_node(1)
      expected_embedding = {1: []}
      check_triangulation(embedding, expected_embedding)
  
imports: import math
  import pytest
  import networkx
  from networkx.algorithms.planar_drawing import triangulate_embedding
label_desc: Use image node_id 11 for calling a global function with example usage: test_triangulate_embedding1() without return types