Unit test Global filters in MVC

Question

I have a MVC4 application and adding bunch of global filters in global.asax. They need to be in one order. I want to write a unit test to make sure they are always in the desired order. Is there a way to access all global filters or test this?

Answer 1

You register the global filters in FilterConfig by default (under App_Start), right? This is something like this:

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
    }
}

You can then call this method from a test case and pass a GlobalFilterCollection instance and after that you can test the order of the GlobalFilterCollection you passed.