code: def test_neighbors_complete_graph(self):
      graph = nx.complete_graph(100)
      pop = random.sample(list(graph), 1)
      nbors = list(nx.neighbors(graph, pop[0]))
      # should be all the other vertices in the graph
      assert len(nbors) == len(graph) - 1
  
      graph = nx.path_graph(100)
      node = random.sample(list(graph), 1)[0]
      nbors = list(nx.neighbors(graph, node))
      # should be all the other vertices in the graph
      if node != 0 and node != 99:
          assert len(nbors) == 2
      else:
          assert len(nbors) == 1
  
      # create a star graph with 99 outer nodes
      graph = nx.star_graph(99)
      nbors = list(nx.neighbors(graph, 0))
      assert len(nbors) == 99
  
imports: import random
  import pytest
  import networkx
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 22 for calling the TestFunction obj's underlying member method code with example usage: obj.test_neighbors_complete_graph() without return types