old_contents: from runtests import Tester
  import os.path
  
  tester = Tester(os.path.abspath(__file__), "fake_spectra")
  
  tester.main(sys.argv[1:])
  
new_contents: from runtests import Tester
  import os.path
  import sys
  
  tester = Tester(os.path.abspath(__file__), "fake_spectra")
  
  tester.main(sys.argv[1:])
  
subject: Add import back to test script