text: """
  A subset of the tests in tests/servers/tests exercicing
  django.contrib.staticfiles.testing.StaticLiveServerTestCase instead of
  django.test.LiveServerTestCase.
  """
  
  import os
  
  from django.core.exceptions import ImproperlyConfigured
  from django.test import modify_settings, override_settings
  from django.utils.six.moves.urllib.request import urlopen
  from django.utils._os import upath
  
  from django.contrib.staticfiles.testing import StaticLiveServerTestCase
  
  
  TEST_ROOT = os.path.dirname(upath(__file__))
  TEST_SETTINGS = {
      'MEDIA_URL': '/media/',
      'STATIC_URL': '/static/',
      'MEDIA_ROOT': os.path.join(TEST_ROOT, 'project', 'site_media', 'media'),
      'STATIC_ROOT': os.path.join(TEST_ROOT, 'project', 'site_media', 'static'),
  }
  
  
  class LiveServerBase(StaticLiveServerTestCase):
  
      available_apps = []
  
      @classmethod
      def setUpClass(cls):
          # Override settings
          cls.settings_override = override_settings(**TEST_SETTINGS)
          cls.settings_override.enable()
          super(LiveServerBase, cls).setUpClass()
  
      @classmethod
      def tearDownClass(cls):
          # Restore original settings
          cls.settings_override.disable()
          super(LiveServerBase, cls).tearDownClass()
  
  
  class StaticLiveServerChecks(LiveServerBase):
  
      @classmethod
      def setUpClass(cls):
          # Backup original environment variable
          address_predefined = 'DJANGO_LIVE_TEST_SERVER_ADDRESS' in os.environ
          old_address = os.environ.get('DJANGO_LIVE_TEST_SERVER_ADDRESS')
  
          # If contrib.staticfiles isn't configured properly, the exception
          # should bubble up to the main thread.
          old_STATIC_URL = TEST_SETTINGS['STATIC_URL']
          TEST_SETTINGS['STATIC_URL'] = None
          cls.raises_exception('localhost:8081', ImproperlyConfigured)
          TEST_SETTINGS['STATIC_URL'] = old_STATIC_URL
  
          # Restore original environment variable
          if address_predefined:
              os.environ['DJANGO_LIVE_TEST_SERVER_ADDRESS'] = old_address
          else:
              del os.environ['DJANGO_LIVE_TEST_SERVER_ADDRESS']
  
      @classmethod
      def tearDownClass(cls):
          # skip it, as setUpClass doesn't call its parent either
          pass
  
      @classmethod
      def raises_exception(cls, address, exception):
          os.environ['DJANGO_LIVE_TEST_SERVER_ADDRESS'] = address
          try:
              super(StaticLiveServerChecks, cls).setUpClass()
              raise Exception("The line above should have raised an exception")
          except exception:
              pass
          finally:
              super(StaticLiveServerChecks, cls).tearDownClass()
  
      def test_test_test(self):
          # Intentionally empty method so that the test is picked up by the
          # test runner and the overridden setUpClass() method is executed.
          pass
  
  
  class StaticLiveServerView(LiveServerBase):
  
      def urlopen(self, url):
          return urlopen(self.live_server_url + url)
  
      # The test is going to access a static file stored in this application.
      @modify_settings(INSTALLED_APPS={'append': 'staticfiles_tests.apps.test'})
      def test_collectstatic_emulation(self):
          """
          Test that StaticLiveServerTestCase use of staticfiles' serve() allows it
          to discover app's static assets without having to collectstatic first.
          """
          f = self.urlopen('/static/test/file.txt')
          self.assertEqual(f.read().rstrip(b'\r\n'), b'In app media directory.')
  