嘲讽的HttpContext（会话） [英] Mocking HttpContext (Session)

问题描述

结果
我读过关于MVC嘲笑......他们中许多人有帮助的许多文章和博客，但我仍然有一些问题：

I've read many articles and blogs about mocking in mvc... Many of them were helpful, but i still have some problems:

• 其中一个问题是，我需要在我的ActionResult使用会话，但在我的测试中，我得到当会话访问一个NullReferenceException。

• One such issue is that I need to use Session in My ActionResult, but in my Tests i get a NullReferenceException when Session is accessed.

public ActionResult Index()
{
  if (Session["Something"] == null)
  {
    Session.Add("Something", <smth>);
  }
  else
  {
    Session["Something"] = <smth>;
  }
  return redirect to action("Index2");
}

我的测试是这样的：

My test look like this:

HomeController controller = new HomeController;
var result = controller.Index() as ViewResult;
Assert.AreEqual("Index2", result.ViewName);

推荐答案

您可以使用工具，如的 MVC-的contrib TestHelper

You can use tools such as the MVC-contrib TestHelper

这从该网站示例显示了如何测试在会话存储提交的表单值的动作

This sample from the site shows how to test an action that stores a posted form value in the session

[Test]
public void AddSessionStarShouldSaveFormToSession()
{
    TestControllerBuilder builder = new TestControllerBuilder();
    StarsController controller = new StarsController();
    builder.InitializeController(controller);

    //note that this is assigned before the controller action. This simulates the server  filling out the form data from the request
    builder.Form["NewStarName"] = "alpha c";

    //this assumes that AddSessionStar takes the form data and adds it to the session
    controller.AddSessionStar();

    Assert.AreEqual("alpha c", controller.HttpContext.Session["NewStarName"]);
}

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