#[tokio::test]
    async fn client_call_router() {
        let router: Router = Router::new().route("/get", get(|| async { HELLO_WORLD }));
        let client = ClientBuilder::new().mock(MockTransport::server_service(router));
        {
            let ret = client.get("/get").unwrap().send().await.unwrap().into_string().await.unwrap();
            assert_eq!(ret, HELLO_WORLD);
        }
        {
            let ret = client.get("http://127.0.0.1/get").unwrap().send().await.unwrap().into_string().await.unwrap();
            assert_eq!(ret, HELLO_WORLD);
        }
        {
            let resp = client.get("/").unwrap().send().await.unwrap();
            assert_eq!(resp.status(), StatusCode::NOT_FOUND);
        }
        {
            let resp = client.post("/get").unwrap().send().await.unwrap();
            assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
        }
    }