text: import unittest
  
  from zope.app.server.main import main, load_options
  from zope.app.server.tests import capture_output
  
  
  class TestMain(unittest.TestCase):
  
      def test_main(self):
          with self.assertRaises(SystemExit) as cm:
              with capture_output() as (stdout, stderr):
                  main(['invalid'])
          self.assertEqual(cm.exception.code, 2)
          self.assertNotEqual(stderr.getvalue(), "")
  
      def test_load_options_no_config_file_specified(self):
          options = load_options([])
          self.assertIs(options, None)
  
      # TODO: somebody finish this please
  