new_contents: from unittest2 import TestCase
  
  from agar.url import uri_for
  from agar.test import BaseTest, WebTest
  
  import main
  
  class MainTest(BaseTest, WebTest):
  
      APPLICATION = main.application
  
      def test_hello_world(self):
          response = self.get("/")
          self.assertOK(response)
  
subject: add simple 'hello world' test