How to mock ActionExecutingContext with Moq?

Question

I am trying to test the following filter:

using Microsoft.AspNet.Mvc;
using Microsoft.AspNet.Mvc.Filters;

namespace Hello
{
    public class ValidationFilte         


        

Answer 1

I just stumbled on the same problem and solved it in this way.

[Fact]
public void ValidateModelAttributes_SetsResultToBadRequest_IfModelIsInvalid()
{
    var validationFilter = new ValidationFilter();
    var modelState = new ModelStateDictionary();
    modelState.AddModelError("name", "invalid");

    var actionContext = new ActionContext(
        Mock.Of(),
        Mock.Of(),
        Mock.Of(),
        modelState
    );

    var actionExecutingContext = new ActionExecutingContext(
        actionContext,
        new List(),
        new Dictionary(),
        Mock.Of()
    );

    validationFilter.OnActionExecuting(actionExecutingContext);

    Assert.IsType(actionExecutingContext.Result);
}