code: def test_unsuccessful_face_traversal(self):
      embedding = nx.PlanarEmbedding(
          {1: {2: {"cw": 3, "ccw": 2}}, 2: {1: {"cw": 3, "ccw": 1}}}
      )
      with pytest.raises(nx.NetworkXException):
          embedding.traverse_face(1, 2)
  
imports: import pytest
  import networkx
  from networkx.algorithms.planarity import check_planarity_recursive, get_counterexample, get_counterexample_recursive
label_desc: Use image node_id 11 for calling the TestPlanarEmbeddingClass obj's underlying member method code with example usage: obj.test_unsuccessful_face_traversal() without return types