如何单元测试我的asp.net-mvc控制器的OnActionExecuting方法？

/// <summary>
///A test for OnActionExecuting
///</summary>
[TestMethod()]
[ExpectedException( typeof( InvalidOperationException ) )]
public void OnActionExecutingWindowsIdentityTest()
{
    var identity = WindowsIdentity.GetCurrent();
    WindowsPrincipal principal = new WindowsPrincipal( identity );
    var httpContext = MockRepository.GenerateStub<HttpContextBase>();
    httpContext.User = principal;

    var actionDescriptor = MockRepository.GenerateStub<ActionDescriptor>();

    RouteData routeData = new RouteData();

    BaseController controller = new BaseController();
    BaseController_Accessor accessor = new BaseController_Accessor( new PrivateObject( controller ) );
    ControllerContext controllerContext = MockRepository.GenerateStub<ControllerContext>( httpContext,routeData,controller );

    ActionExecutingContext filterContext = new ActionExecutingContext( controllerContext,actionDescriptor,new Dictionary<string,object>() );

    accessor.OnActionExecuting( filterContext );

}

编辑：如果您没有使用MSTest进行单元测试,则可能需要手动生成访问器.本质上来说,您创建一个包装类,通过等效的公共方法暴露被测试类的私有/受保护方法,将被测试类的实例传递给包装器,然后使用包装器类的反射来调用私有/受保护的方法在被测课上.

public class MyClass
   {
       protected void DoSomething( int num )
       {
       }
   }

   public class MyClass_accessor
   {
       private MyClass privateObj;

       public MyClass_accessor( MyClass obj )
       {
           this.privateObj = obj;
       }

       public void DoSomething( int num )
       {
           MethodInfo info = privateObj.GetType()
                                       .GetMethod("DoSomething",BindingFlags.NonPublic
                                                   | BindingFlags.Instance );

           info.Invoke(obj,new object[] { num });
       }
    }