code: def test_bad_method(self):
      with pytest.raises(ValueError):
          G = nx.path_graph(2)
          list(
              nx.all_shortest_paths(
                  G, 0, 1, weight="weight", method="SPAM"
              )
          )
  
imports: import pytest
  import networkx
label_desc: Use image node_id 16 for calling the TestGenericPath obj's underlying member method code with example usage: obj.test_bad_method() without return types