ASP.NET MVC3のController内でSessionが更新されていることをテストするためのコード(Moq使用)

gistfile1.cs

        //SEE: http://stackoverflow.com/questions/2916348/using-moq-to-set-indexers-in-c-sharp
        [TestMethod]
        public void IndexTest()
        {
            var mockHttpContext = new Mock<HttpContextBase>();
            var mockSession = new Mock<HttpSessionStateBase>();
            mockHttpContext.Setup(context => context.Session).Returns(mockSession.Object);
            AppHttpContext.Current = () => mockHttpContext.Object;

            var controller = new HomeController();
            controller.Index();

            mockSession.VerifySet(session => session["Message"] = "Hello, World!");
        }