如何使用MSpec测试ASP.NET MVC操作设置的HTTP状态代码

Question

我有以下控制器:

public sealed class SomeController : Controller
{
    public ActionResult PageNotFound()
    {
        Response.StatusCode = 404;

        return View("404");
    }
}

我创建了一个MSpec规范:

[Subject(typeof (SomeController))]
public class when_invalid_page_is_requested : SomeControllerSpec
{
    Because of = () => result = Controller.PageNotFound();

    It should_set_status_code_to_404 = 
        () => Controller.Response.StatusCode.ShouldEqual(404);
}

public abstract class SomeControllerSpec
{
    protected static HomeController Controller;

    Establish context = () => { Controller = new SomeController(); };
}

但是由于我实例化控制器的方式,HttpContext为null.测试PageNotFound动作设置的状态代码的最佳方法是什么？

编辑:发布以下答案

Answer 1

找到了一种使用Moq的方法.

[Subject(typeof (SomeController))]
public class when_invalid_page_is_requested : SomeControllerSpec
{
    Because of = () => result = Controller.PageNotFound();

    It should_set_status_code_to_404 = 
        () => HttpResponse.VerifySet(hr => hr.StatusCode = 404);
}

public abstract class SomeControllerSpec
{
    protected static SomeController Controller;
    protected static Mock<ControllerContext> ControllerContext;
    protected static Mock<HttpResponseBase> HttpResponse;

    Establish context = () =>
    {
        ControllerContext = new Mock<ControllerContext>();
        HttpResponse = new Mock<HttpResponseBase>();
        ControllerContext.SetupGet(cc => cc.HttpContext.Response)
                         .Returns(HttpResponse.Object);

        Controller = new SomeController
                         {
                             ControllerContext = ControllerContext.Object
                         };
    };
}

不是很优雅.如果你能想到更好的方式 - 让我知道.