text: #!/usr/bin/env python
  import sys
  import unittest
  
  # Most of our tests depend on IOLoop, which is not importable on app engine.
  # Run the tests that work, and check that forbidden imports don't sneak
  # in to modules that are supposed to work on app engine.
  TEST_MODULES = [
      'tornado.httputil.doctests',
      #'tornado.iostream.doctests',
      'tornado.util.doctests',
      #'tornado.test.auth_test',
      #'tornado.test.curl_httpclient_test',
      'tornado.test.escape_test',
      #'tornado.test.gen_test',
      #'tornado.test.httpclient_test',
      #'tornado.test.httpserver_test',
      'tornado.test.httputil_test',
      #'tornado.test.import_test',
      #'tornado.test.ioloop_test',
      #'tornado.test.iostream_test',
      #'tornado.test.process_test',
      #'tornado.test.simple_httpclient_test',
      #'tornado.test.stack_context_test',
      'tornado.test.template_test',
      #'tornado.test.testing_test',
      #'tornado.test.twisted_test',
      #'tornado.test.web_test',
      #'tornado.test.wsgi_test',
  ]
  
  def import_everything():
      # import tornado.auth
      # import tornado.autoreload
      # import tornado.curl_httpclient  # depends on pycurl
      import tornado.escape
      # import tornado.httpclient
      # import tornado.httpserver
      import tornado.httputil
      # import tornado.ioloop
      # import tornado.iostream
      import tornado.locale
      import tornado.options
      # import tornado.netutil
      # import tornado.platform.twisted # depends on twisted
      # import tornado.process
      # import tornado.simple_httpclient
      import tornado.stack_context
      import tornado.template
      import tornado.testing
      import tornado.util
      import tornado.web
      # import tornado.websocket
      import tornado.wsgi
  
  def all():
      return unittest.defaultTestLoader.loadTestsFromNames(TEST_MODULES)
  
  def main():
      print "Content-Type: text/plain\r\n\r\n",
  
      import_everything()
  
      try:
          unittest.main(defaultTest="all", argv=sys.argv)
      except SystemExit, e:
          if e.code == 0:
              print "PASS"
          else:
              raise
  
  if __name__ == '__main__':
      main()
  