控制器的MVC单元测试中的错误

Question

I have a code block in my unit test project as below

IEnumerable<Product> result = (IEnumerable<Product>)controller.List(2).Model;

it produce error

Error   1   'System.Web.Mvc.ActionResult' does not contain a definition for 'Model' and no extension method 'Model' accepting a first argument of type 'System.Web.Mvc.ActionResult' could be found ..

How can I solve this?

Answer 1

如果操作返回视图，则将其强制转换为ViewResult

((ViewResult)(IEnumerable<Product>)controller.List(2)).Model

Answer 2

The answer of @archil will throw an exception at run time:

Unable to cast object of type 'System.Web.Mvc.ViewResult' to type 'System.Collections.Generic.IEnumerable`1[Product]'.

The correct cast is:

IEnumerable<Product> result = (IEnumerable<Product>)((ViewResult)controller.List(2)).Model;

Or simply, change the return type of the action to a ViewResult instead of an ActionResult :

public ViewResult List(int param)

And in the unit test use:

IEnumerable<Product> result = (IEnumerable<Product>)controller.List(2).Model;