public void UnorderedListWithEmptyItemsReturnsEmptyHtmlString() {
            //arrange
            var viewContext = new ViewContext();
            var viewDataContainer = new Mock<IViewDataContainer>();
            var html = new HtmlHelper(viewContext, viewDataContainer.Object);

            //act
            var result = html.UnorderedList(new string[] { }, (a, b) => MvcHtmlString.Create(""), "test");

            //assert
            Assert.AreEqual(string.Empty, result.ToString());
        }