code: def setUp(self):
      # Create nodes (1-10) in unsorted order
      nodes = np.array([1, 4, 5, 10, 8, 9, 3, 7, 2, 6])
      edges = list(zip(nodes[:-1], nodes[1:]))
  
      g = nx.Graph()
      g.add_nodes_from(nodes)
      g.add_edges_from(edges)
  
      self.nodes = nodes
      self.g = g
  
imports: from unittest import TestCase, SkipTest
label_desc: Use image node_id 1 for calling the TestOptions obj's underlying member method code with example usage: obj.setUp() without return types