old_contents: APP_MODULE = 'tests.test_app'
  APP_FUNCTION = 'hello_world'
  DEBUG = 'True'
  LOG_LEVEL = 'DEBUG'
  SCRIPT_NAME = 'hello_world'
  
  def prebuild_me():
      print("This is a prebuild script!")
  
new_contents: APP_MODULE = 'tests.test_app'
  APP_FUNCTION = 'hello_world'
  DEBUG = 'True'
  LOG_LEVEL = 'DEBUG'
  SCRIPT_NAME = 'hello_world'
  DOMAIN = None
  API_STAGE = 'ttt555'
  
  def prebuild_me():
      print("This is a prebuild script!")
  
subject: update test settings