@Test
public void jsonpTransport() throws Exception {
JsonpPollingTransportHandler transportHandler = new JsonpPollingTransportHandler();
transportHandler.initialize(this.sockJsConfig);
PollingSockJsSession session = transportHandler.createSession("1", this.webSocketHandler, null);
transportHandler.handleRequest(this.request, this.response, this.webSocketHandler, session);
assertEquals(500, this.servletResponse.getStatus());
assertEquals("\"callback\" parameter required", this.servletResponse.getContentAsString());