private void testRouteWithHandler(Route innerRoute) {
    TestRoute route = testRoute(innerRoute);

    route.run(HttpRequest.GET("/test")).assertStatusCode(200);

    route
        .run(HttpRequest.GET("/other"))
        .assertStatusCode(429)
        .assertEntity("Too many requests for busy path!");
  }
  @Test
  public void testCatchExceptionThrownFromHandler() {
    Parameter<Integer> a = Parameters.intValue("a");
    Parameter<Integer> b = Parameters.intValue("b");
    Handler2<Integer, Integer> divide =
        new Handler2<Integer, Integer>() {
          @Override
          public RouteResult apply(RequestContext ctx, Integer a, Integer b) {
            int result = a / b;
            return ctx.complete("The result is: " + result);
          }
        };

    ExceptionHandler handleDivByZero =
        new ExceptionHandler() {
          @Override
          public Route handle(RuntimeException exception) {
            try {
              throw exception;
            } catch (ArithmeticException t) {
              return complete(
                  HttpResponse.create()
                      .withStatus(400)
                      .withEntity("Congratulations you provoked a division by zero!"));
            }
          }
        };

    TestRoute route =
        testRoute(
            handleExceptions(handleDivByZero, path("divide").route(handleWith2(a, b, divide))));

    route.run(HttpRequest.GET("/divide?a=10&b=5")).assertEntity("The result is: 2");

    route
        .run(HttpRequest.GET("/divide?a=10&b=0"))
        .assertStatusCode(400)
        .assertEntity("Congratulations you provoked a division by zero!");
  }
  @Test
  public void testHandleMethodRejection() {
    RejectionHandler rejectionHandler =
        new RejectionHandler() {
          @Override
          public RouteResult handleMethodRejection(RequestContext ctx, HttpMethod supported) {
            return ctx.complete(
                HttpResponse.create()
                    .withStatus(400)
                    .withEntity(
                        "Whoopsie! Unsupported method. Supported would have been "
                            + supported.value()));
          }
        };

    TestRoute route = testRoute(handleRejections(rejectionHandler, get(complete("Successful!"))));

    route.run(HttpRequest.GET("/")).assertStatusCode(200).assertEntity("Successful!");

    route
        .run(HttpRequest.POST("/"))
        .assertStatusCode(400)
        .assertEntity("Whoopsie! Unsupported method. Supported would have been GET");
  }