code: def suite():
      flow_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
          MaxFlowTests
      )
      cut_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
          CutTests
      )
      gomory_hu_suite = (
          unittest.defaultTestLoader.loadTestsFromTestCase(
              GomoryHuTests
          )
      )
      return unittest.TestSuite(
          [flow_suite, cut_suite, gomory_hu_suite]
      )
  
imports: import unittest
  from igraph import Cut, Graph, EdgeSeq, InternalError
  from itertools import combinations
  from random import randint
label_desc: Use image node_id 1 for calling a global function with example usage: suite() and returns: unittest