old_contents: from unittest import TestSuite
  from .ExperimentTest import ExperimentTest
  from .EvaluationTest import EvaluationTest
  from .SolverTest import SolverTest
  from .FormatTest import FormatTest
  import logging
  
  
  test_cases = (EvaluationTest, 
                ExperimentTest, 
                SolverTest,
                FormatTest,
                )
  
  def load_tests(loader, tests, pattern):
      suite = TestSuite()
      for test_class in test_cases:
          tests = loader.loadTestsFromTestCase(test_class)
          suite.addTests(tests)
      return suite
  
new_contents: from unittest import TestSuite
  from .ExperimentTest import ExperimentTest
  from .EvaluationTest import EvaluationTest
  from .SolverTest import SolverTest
  from .FormatTest import FormatTest
  from .PrimalDualBoundHistoryTest import PrimalDualBoundHistoryTest
  import logging
  
  
  test_cases = (EvaluationTest, 
                ExperimentTest, 
                SolverTest,
                FormatTest,
                PrimalDualBoundHistoryTest,
                )
  
  def load_tests(loader, tests, pattern):
      suite = TestSuite()
      for test_class in test_cases:
          tests = loader.loadTestsFromTestCase(test_class)
          suite.addTests(tests)
      return suite
  
subject: add test