public void BintTo_for_SiteMap_should_get_SiteMap_and_create_items() { const string viewDataKey = "sample"; Action <TabStripItem, SiteMapNode> action = (item, node) => { if (!string.IsNullOrEmpty(node.RouteName)) { item.RouteName = node.RouteName; } }; _builder.BindTo(viewDataKey, action); Assert.Equal(2, _tabStrip.Items.Count); }