So you don't hate yourself when you try to test a controller.

ApiControllerExtensions.cs

        public static void ConfigureForTesting(this ApiController controller, HttpRequestMessage request, string routeName = null, HttpRoute route = null)
        {
            var config = new HttpConfiguration();
            controller.Configuration = config;
            if (routeName != null && route !=null)
                config.Routes.Add(routeName, route);
            else 
                route = config.Routes.MapHttpRoute("DefaultApi", "{controller}/{id}", new { id = RouteParameter.Optional });
            
            var controllerTypeName = controller.GetType().Name;
            var controllerName = controllerTypeName.Substring(0, controllerTypeName.IndexOf("Controller")).ToLower();
            var routeData = new HttpRouteData(route, new HttpRouteValueDictionary { { "controller", controllerName } });
            controller.ControllerContext = new HttpControllerContext(config, routeData, request);
            controller.ControllerContext.ControllerDescriptor = new HttpControllerDescriptor(config, controllerName, controller.GetType());
            controller.Request = request;
            controller.Request.Properties[HttpPropertyKeys.HttpConfigurationKey] = config;
            controller.Request.Properties.Add(HttpPropertyKeys.HttpRouteDataKey, routeData);
        }