old_contents: import unittest
  
  from payment_terminal.tests.test_loader import TestLoader
  from payment_terminal.tests.bbs import (
      TestBBSFields, TestBBSMessages,
      TestBBSTerminal, TestBBSConnection,
      TestBBSPaymentSession,
  )
  
  
  loader = unittest.TestLoader()
  suite = unittest.TestSuite((
      loader.loadTestsFromTestCase(TestLoader),
      loader.loadTestsFromTestCase(TestBBSFields),
      loader.loadTestsFromTestCase(TestBBSMessages),
      loader.loadTestsFromTestCase(TestBBSTerminal),
      loader.loadTestsFromTestCase(TestBBSConnection),
      loader.loadTestsFromTestCase(TestBBSPaymentSession),
  ))
  
new_contents: import unittest
  
  from payment_terminal.tests.test_loader import TestLoader
  import payment_terminal.tests.bbs
  
  
  def suite():
      loader = unittest.TestLoader()
      suite = unittest.TestSuite((
          loader.loadTestsFromModule(payment_terminal.tests.bbs),
          loader.loadTestsFromTestCase(TestLoader),
      ))
      return suite
  
subject: reduce duplication in test loading