code: def test_unrecognized_method(self):
      G = nx.path_graph(4)
      pytest.raises(
          nx.NetworkXError, nx.spectral_ordering, G, method="unknown"
      )
  
imports: from math import sqrt
  import pytest
  import networkx
label_desc: Use image node_id 3 for calling the TestSpectralOrdering obj's underlying member method code with example usage: obj.test_unrecognized_method() without return types