code: def test_paths(self):
      K_undir = nx.all_pairs_node_connectivity(self.path)
      for source in K_undir:
          for target, k in K_undir[source].items():
              assert k == 1
      K_dir = nx.all_pairs_node_connectivity(self.directed_path)
      for source in K_dir:
          for target, k in K_dir[source].items():
              if source < target:
                  assert k == 1
              else:
                  assert k == 0
  
imports: import itertools
  import pytest
  import networkx
  from networkx.algorithms import flow
  from networkx.algorithms.connectivity import local_edge_connectivity, local_node_connectivity
label_desc: Use image node_id 4 for calling the TestAllPairsNodeConnectivity obj's underlying member method code with example usage: obj.test_paths() without return types