docstr: Case of no common neighbors.
docstr_tok: ["Case","of","no","common","neighbors","."]
code: def test_custom1(self):
      """Case of no common neighbors."""
      G = nx.Graph()
      G.add_nodes_from([0, 1])
      self.test(G, 0, 1, [])
  
imports: import random
  import pytest
  import networkx
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 7 for calling the TestCommonNeighbors obj's underlying member method code with example usage: obj.test_custom1() without return types