code: def test_digraph_infcap_path(self):
      # Graph with infinite capacity (s, t)-path
      G = nx.DiGraph()
      G.add_edge("s", "a")
      G.add_edge("s", "b", capacity=30)
      G.add_edge("a", "c")
      G.add_edge("b", "c", capacity=12)
      G.add_edge("a", "t", capacity=60)
      G.add_edge("c", "t")
  
      for flow_func in all_funcs:
          pytest.raises(nx.NetworkXUnbounded, flow_func, G, "s", "t")
  
imports: import pytest
  import networkx
  from networkx.algorithms.flow import boykov_kolmogorov, build_flow_dict, build_residual_network, dinitz, edmonds_karp, preflow_push, shortest_augmenting_path
label_desc: Use image node_id 10 for calling the TestMaxflowMinCutCommon obj's underlying member method code with example usage: obj.test_digraph_infcap_path() without return types