new_contents: """
  Test that the installed modules in setup.py are up-to-date.
  
  If this test fails, run
  
  python bin/generate_test_list.py
  
  and
  
  python bin/generate_module_list.py
  
  to generate the up-to-date test and modules list to put in setup.py.
  
  """
  import generate_test_list
  import generate_module_list
  
  from get_sympy import path_hack
  path_hack()
  
  import setup
  
  module_list = generate_module_list.generate_module_list()
  test_list = generate_test_list.generate_test_list()
  
  assert setup.modules == module_list, set(setup.modules).symmetric_difference(set(module_list))
  assert setup.tests == test_list, set(setup.tests).symmetric_difference(set(test_list))
  print("setup.py modules and tests are OK")
  
subject: Add a script to test that tests and modules in setup.py are up-to-date