Using Google reCAPTCHA in ASP.NET MVC - Test Controller

TestController.cs

public class TestController : Controller
{
    [HttpGet]
    public ActionResult Create()
    {
        return View();
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    [ValidateGoogleCaptcha]
    public ActionResult Create(string title)
    {
        // If we are here, Captcha is validated.
        return View();
    }
}