C# · 12月 25, 2021

c# – 我如何在单元测试中模拟控制器上下文,以便我对字符串函数的部分视图有效?

我正在尝试为我的控制器创建一个单元测试,但是我正在测试的动作使用部分视图来进行字符串函数,该函数不希望在我的测试中工作. private string RenderPartialViewToString(string viewName,object model = null){ if (string.IsNullOrEmpty(viewName)) viewName = ControllerContext.RouteData.GetrequiredString(“action”); ViewData.Model = model; using (System.IO.StringWriter sw = new System.IO.StringWriter()) { ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext,viewName); ViewContext viewContext = new ViewContext(ControllerContext,viewResult.View,ViewData,TempData,sw); viewResult.View.Render(viewContext,sw); return sw.GetStringBuilder().ToString(); }}

这给我一个错误“对象引用未设置为对象的实例”在行上ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(ControllerContext,viewName);

我在控制器的单元测试中的设置是(删除几位以简化它):

var mock = new Mock<ControllerContext>();mock.SetupGet(p => p.HttpContext.User.Identity.Name).Returns(userName);if (userName != null){ mock.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(true); mock.SetupGet(p => p.HttpContext.User.Identity.IsAuthenticated).Returns(true);}else{ mock.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(false);}var controller = new BlogController();controller.ControllerContext = mock.Object;

我没有任何运气试图找到解决方案或解决方案.任何帮助赞赏.谢谢.

如我所建议的,我已经尝试设置路由数据,但仍然收到错误.这是我添加的:

var routeData = new RouteData();routeData.Values.Add(“controller”,”BlogController”);mock.SetupGet(m => m.RouteData).Returns(routeData);解决方法 最后的解决方案,由于在评论中的帮助. var mock = new Mock<ControllerContext>();mock.SetupGet(p => p.HttpContext.User.Identity.Name).Returns(userName);if (userName != null){ mock.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(true); mock.SetupGet(p => p.HttpContext.User.Identity.IsAuthenticated).Returns(true);}else{ mock.SetupGet(p => p.HttpContext.Request.IsAuthenticated).Returns(false);}var routeData = new RouteData();routeData.Values.Add(“controller”,”BlogController”);mock.SetupGet(m => m.RouteData).Returns(routeData);var view = new Mock<IView>();var engine = new Mock<IViewEngine>();var viewEngineResult = new ViewEngineResult(view.Object,engine.Object);engine.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(),It.IsAny<string>(),It.IsAny<bool>())).Returns(viewEngineResult);ViewEngines.Engines.Clear();ViewEngines.Engines.Add(engine.Object);var controller = new BlogController();controller.ControllerContext = mock.Object;