new_contents: import webapp2
  import unittest
  import webtest
  from gae_server.incremental_fonts import IncrementalFonts
  
  
  class AppTest(unittest.TestCase):
      def setUp(self):
          # Create a WSGI application.
          app = webapp2.WSGIApplication([('/', IncrementalFonts)])
          # Wrap the app with WebTest’s TestApp.
          self.testapp = webtest.TestApp(app)
  
      # Test the handler.
      def testIncrementalFonts(self):
          response = self.testapp.get('/')
          self.assertEqual(response.status_int, 200)
          self.assertEqual(response.normal_body, 'Hello World!')
          self.assertEqual(response.content_type, 'text/plain')
subject: Test for server handler is added