如何使用 MSpec 测试由 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 为空。 测试PageNotFound 操作设置的状态代码的最佳方法是什么？

编辑：在下面发布答案

Answer 1

使用MvcContrib 的TestControllerBuilder 的另一个选项...

var myController = new MyController();

var testControllerBuilder = new TestControllerBuilder();
testControllerBuilder.InitializeController(myController);

然后使用 NUnit（我猜 Moq 版本会像你拥有的那样工作）...

myController.Response.AssertWasCalled( response => response.StatusCode = 400 );

所有丑陋的设置和模拟工作仍在完成，但由 MvcContrib 而不是在测试内部完成。这是using the TestControllerBuilder上的帖子。

Answer 2

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。如果您能想到更好的方法，请告诉我。

Answer 3

你可以使用：

_controller.Response.StatusCode