code: def testCapacities(self):
      self.assertTrue(
          self.capacities == self.g.es.get_attribute_values("capacity")
      )
  
imports: import unittest
  from igraph import Cut, Graph, EdgeSeq, InternalError
  from itertools import combinations
  from random import randint
label_desc: Use image node_id 2 for calling the MaxFlowTests obj's underlying member method code with example usage: obj.testCapacities() without return types