Testing MVC Controller Action HttpAcceptAttribute Verbs

Question

What is the best way to unit test the controller action HttpAcceptAttribute verbs?

So far I have the following but it's so ugly even a mother couldn't love it and not very flexible. Is there a better way?

[Fact] // using xUnit, mocking controller in class
public void FilterControllerTestRemoveFilterByProductAttributeIsOfTypePost()
{
    Type[] paramTypes = new[] { typeof(int) };
    var method = typeof(FilterController).GetMethod("MyMethod", paramTypes);

    var attributes = method.GetCustomAttributes(typeof(AcceptVerbsAttribute), false).Cast<AcceptVerbsAttribute>().SingleOrDefault();
    Assert.NotNull(attributes);
    Assert.Equal(1, attributes.Verbs.Count());
    Assert.True(attributes.Verbs.First().Equals(HttpVerbs.Post.ToString(), StringComparison.InvariantCultureIgnoreCase));
}

Thanks Mac

Answer 1

No reflection and magic strings, easy to rename controller and method without breaking the unit test:

[TestMethod]
public void HomeController_Index_Action_Should_Accept_Post_Verb_Only()
{
    Expression<Action<HomeController>> expression = (HomeController c) => c.Index(null);
    var methodCall = expression.Body as MethodCallExpression;
    var acceptVerbs = (AcceptVerbsAttribute[])methodCall.Method.GetCustomAttributes(typeof(AcceptVerbsAttribute), false);
    acceptVerbs.ShouldNotBeNull("");
    acceptVerbs.Length.ShouldBe(1);
    acceptVerbs[0].Verbs.First().ShouldBe("POST");
}