如何测试OnActionExecuted过滤器? [英] How to test OnActionExecuted filter?
问题描述
因此,我在BaseController类中重写OnActionExecuted来设置BaseViewModel的CurrentUser属性.我希望能够对此进行单元测试,但不知道如何进行.
So I'm overriding OnActionExecuted in my BaseController class to set the CurrentUser property of a BaseViewModel. I'd like to be able to unit test this, but can't figure out how.
代码如下:
protected override void OnActionExecuted(ActionExecutedContext filterContext)
{
if (filterContext.Result is ViewResult && ((ViewResult)filterContext.Result).ViewData.Model != null)
{
((BaseViewModel)((ViewResult)filterContext.Result).ViewData.Model).CurrentUser = CurrentUser;
}
base.OnActionExecuted(filterContext);
}
这是测试:
BaseController controller = new BaseController();
Mock<ActionExecutedContext> MockActionExecutedContext = new Mock<ActionExecutedContext>();
MockActionExecutedContext.Setup(ctx => ctx.Result).Returns(new ViewResult());
controllerAccessor.OnActionExecuted(MockActionExecutedContext.Object);
ViewResult vr = MockActionExecutedContext.Object.Result as ViewResult;
BaseViewModel model = vr.ViewData.Model as BaseViewModel;
User currentUser = model.CurrentUser;
Assert.NotNull(currentUser);
运行测试时,出现错误:
When I run the test, I'm getting the error:
System.NotSupportedException : Invalid setup on a non-virtual member: ctx => ctx.Result
我知道我可以在每个派生控制器的单元测试中测试该属性,但是必须有一种更干净的方法来执行此操作.有什么想法吗?
I know I could just test for the property in the unit tests of every derived controller, but there must be a cleaner way to do this. Any ideas?
推荐答案
我认为您不需要模拟ActionExecutedContext.只需创建一个实际的ActionExecutedContext即可传递到您的控制器中.我已经采取了许多自由措施,但请考虑以下控制器代码:
I don't think you need to mock the ActionExecutedContext. Just create an actual ActionExecutedContext to pass into your controller. I have taken a number of liberties, but consider this controller code:
public class BaseController : Controller
{
public User CurrentUser { get; set; }
protected override void OnActionExecuted(ActionExecutedContext filterContext)
{
if (filterContext.Result is ViewResult && ((ViewResult)filterContext.Result).ViewData.Model != null)
{
((BaseViewModel)((ViewResult)filterContext.Result).ViewData.Model).CurrentUser = CurrentUser;
}
base.OnActionExecuted(filterContext);
}
public void controllerAccessor(ActionExecutedContext filterContext)
{
OnActionExecuted(filterContext);
}
}
下面的测试代码可以在我的机器上运行:
And this test code, which is working on my machine:
[TestMethod]
public void YourTest()
{
// Arrange
var inUser = new User();
BaseController controller = new BaseController() { CurrentUser = inUser };
var ctx = new ActionExecutedContext();
var inVr = new ViewResult();
var baseVm = new BaseViewModel();
inVr.ViewData.Model = baseVm;
ctx.Result = inVr;
// Act
controller.controllerAccessor(ctx);
// Assert
ViewResult outVr = (ViewResult)ctx.Result;
BaseViewModel model = (BaseViewModel)outVr.ViewData.Model;
User outUser = model.CurrentUser;
Assert.AreEqual(inUser, outUser);
}
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