def start(self, modulename=None):
        """Load and start the HTTP server."""
        if modulename:
            # Unhook httpserver so cherrypy.server.start() creates a new
            # one (with config from setup_server, if declared).
            cherrypy.server.httpserver = None

        cherrypy.engine.start()

        self.sync_apps()
Load and start the HTTP server.
cherrypy/test/helper.py