Creating your custom HttpControllerContext for Web API

I needed to fiddle a bit in a API method returning a HttpResponseMessage when validating captchas that wasn't included in the model validation.

HttpConfiguration config = new HttpConfiguration();
IHttpRouteData route = new HttpRouteData(new HttpRoute());
HttpRequestMessage req = new HttpRequestMessage();
req.Properties[HttpPropertyKeys.HttpConfigurationKey] = config;
req.Properties[HttpPropertyKeys.HttpRouteDataKey] = route;
HttpControllerContext context = new HttpControllerContext(config, route, req);