带有 HttpContext 的 ASP.NET MVC 单元测试控制器

本文介绍了带有 HttpContext 的 ASP.NET MVC 单元测试控制器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在尝试为我的一个控制器编写单元测试以验证视图是否正确返回，但该控制器有一个访问 HttpContext.Current.Session 的基本控制器.每次我创建控制器的新实例时，都会调用 basecontroller 构造函数，并且测试失败并在 HttpContext.Current.Session 上出现空指针异常.代码如下:

I am trying to write a unit test for my one controller to verify if a view was returned properly, but this controller has a basecontroller that accesses the HttpContext.Current.Session. Everytime I create a new instance of my controller is calls the basecontroller constructor and the test fails with a null pointer exception on the HttpContext.Current.Session. Here is the code:

public class BaseController : Controller { protected BaseController() { ViewData["UserID"] = HttpContext.Current.Session["UserID"]; } } public class IndexController : BaseController { public ActionResult Index() { return View("Index.aspx"); } } [TestMethod] public void Retrieve_IndexTest() { // Arrange const string expectedViewName = "Index"; IndexController controller = new IndexController(); // Act var result = controller.Index() as ViewResult; // Assert Assert.IsNotNull(result, "Should have returned a ViewResult"); Assert.AreEqual(expectedViewName, result.ViewName, "View name should have been {0}", expectedViewName); }

关于如何模拟(使用 Moq)在基本控制器中访问的会话以便在后代控制器中运行测试的任何想法?

Any ideas on how to mock (using Moq) the Session that is accessed in the base controller so the test in the descendant controller will run?

推荐答案

如果您正在使用 Typemock，您可以这样做:

If you are using Typemock, you can do this:

Isolate.WhenCalled(()=>controller.HttpContext.Current.Session["UserID"]) .WillReturn("your id");

测试代码如下:

[TestMethod] public void Retrieve_IndexTest() { // Arrange const string expectedViewName = "Index"; IndexController controller = new IndexController(); Isolate.WhenCalled(()=>controller.HttpContext.Current.Session["UserID"]) .WillReturn("your id"); // Act var result = controller.Index() as ViewResult; // Assert Assert.IsNotNull(result, "Should have returned a ViewResult"); Assert.AreEqual(expectedViewName, result.ViewName, "View name should have been {0}", expectedViewName); }