当返回类型为 ActionResult 时，如何对操作进行单元测试?

本文介绍了当返回类型为 ActionResult 时，如何对操作进行单元测试?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

我已经为以下操作编写了单元测试.

I have written unit test for following action.

[HttpPost] public ActionResult/*ViewResult*/ Create(MyViewModel vm) { if (ModelState.IsValid) { //Do something... return RedirectToAction("Index"); } return View(vm); }

测试方法可以访问Model属性，只有返回类型为ViewResult.在上面的代码中，我使用了 RedirectToAction 所以这个动作的返回类型不能是 ViewResult.

Test method can access Model properties, only when return type is ViewResult. In above code, I have used RedirectToAction so return type of this action can not be ViewResult.

在这种情况下，您如何对操作进行单元测试?

In such scenario how do you unit-test an action?

推荐答案

这是我的小例子:

public ActionResult Index(int id) { if (1 != id) { return RedirectToAction("asd"); } return View(); }

还有测试:

[TestMethod] public void TestMethod1() { HomeController homeController = new HomeController(); ActionResult result = homeController.Index(10); Assert.IsInstanceOfType(result,typeof(RedirectToRouteResult)); RedirectToRouteResult routeResult = result as RedirectToRouteResult; Assert.AreEqual(routeResult.RouteValues["action"], "asd"); } [TestMethod] public void TestMethod2() { HomeController homeController = new HomeController(); ActionResult result = homeController.Index(1); Assert.IsInstanceOfType(result, typeof(ViewResult)); }

确认结果类型为 ViewResut 后，您可以将其转换为:

Once you verified that the result type is ViewResut you can cast to it:

ViewResult vResult = result as ViewResult; if(vResult != null) { Assert.IsInstanceOfType(vResult.Model, typeof(YourModelType)); YourModelType model = vResult.Model as YourModelType; if(model != null) { //... } }