new_contents: import unittest2
  import webtest
  import json
  import webapp2
  
  from google.appengine.ext import testbed
  
  from controllers.api.api_event_controller import ApiEventController
  
  class TestApiController(unittest2.TestCase):
  
      def setUp(self):
          # Use ApiEventController as a random API controller to test on
          app = webapp2.WSGIApplication([webapp2.Route(r'/<event_key:>', ApiEventController, methods=['GET'])], debug=True)
          self.testapp = webtest.TestApp(app)
  
          self.testbed = testbed.Testbed()
          self.testbed.activate()
          self.testbed.init_datastore_v3_stub()
          self.testbed.init_urlfetch_stub()
          self.testbed.init_memcache_stub()
          self.testbed.init_taskqueue_stub()
  
      def tearDown(self):
          self.testbed.deactivate()
  
      def test_validate_tba_app_id(self):
          # Fail
          response = self.testapp.get('/2010sc', expect_errors=True)
          self.assertEqual(response.status_code, 400)
          self.assertTrue('Error' in response.json)
  
          # Fail
          response = self.testapp.get('/2010sc', headers={'X-TBA-App-Id': ''}, expect_errors=True)
          self.assertEqual(response.status_code, 400)
          self.assertTrue('Error' in response.json)
  
          # Fail
          response = self.testapp.get('/2010sc', headers={'X-TBA-App-Id': '::'}, expect_errors=True)
          self.assertEqual(response.status_code, 400)
          self.assertTrue('Error' in response.json)
  
          # Fail
          response = self.testapp.get('/2010sc', headers={'X-TBA-App-Id': 'a::'}, expect_errors=True)
          self.assertEqual(response.status_code, 400)
          self.assertTrue('Error' in response.json)
  
          # Fail
          response = self.testapp.get('/2010sc', headers={'X-TBA-App-Id': 'a:a:'}, expect_errors=True)
          self.assertEqual(response.status_code, 400)
          self.assertTrue('Error' in response.json)
  
          # Pass, event not in database
          response = self.testapp.get('/2010sc', headers={'X-TBA-App-Id': 'a:a:a'}, expect_errors=True)
          self.assertEqual(response.status_code, 404)
          self.assertTrue('404' in response.json)
  
subject: Add test cases for X-TBA-App-Id