public void TestGetWebsitesEmpty()
        {
            var umbracoHelperService = new Mock<IUmbracoHelperService>();
            var publishedContentExtensionService = new Mock<IPublishedContentExtensionService>();
            var nodeService = new NodeService(new UmbracoMapper(), umbracoHelperService.Object,
                publishedContentExtensionService.Object);

            umbracoHelperService.Setup(x => x.TypedContent(It.IsAny<int>()))
                .Returns((IPublishedContent) null);

            var websites = nodeService.GetWebsites().ToList();

            Assert.AreEqual(0, websites.Count);
        }