我将值存储在正在测试的控制器操作的会话中。我读过几篇关于如何模拟会话的文章,我正在尝试实现 Milox 的答案在单元测试中设置 httpcontext 当前会话 https://stackoverflow.com/questions/9624242/setting-the-httpcontext-current-session-in-unit-test/10126711#10126711。但当我深入研究Locals | this | base | HttpContext
Sessions
仍然为 null,并且在设置 Session 变量时测试失败并出现 Null Reference 异常HttpContext.Session["BsAcId"] = vM.BusAcnt.Id;
这是有效的生产代码。vM.BusAcnt.Id
返回一个有效的int
如果我用一个替换它int
值测试仍然失败,因为Session
为 null,因此不能在其中存储任何值。
我正在使用 MVC5、EF6 以及最新版本的 xUnit、Moq 和 Resharper 测试运行程序。
Action:
public ActionResult Details(int id)
{
var vM = new BusAcntVm();
vM.BusAcnt = _db.BusAcnts.FirstOrDefault(bA => bA.Id == id);
if ((User.IsInRole("Admin"))) return RedirectToAction("Action");
HttpContext.Session["BsAcId"] = vM.BusAcnt.Id;
return View(vM);
}
模拟助手:
public static class MockHelpers
{
public static HttpContext FakeHttpContext()
{
var httpRequest = new HttpRequest("", "http://localhost/", "");
var stringWriter = new StringWriter();
var httpResponce = new HttpResponse(stringWriter);
var httpContext = new HttpContext(httpRequest, httpResponce);
var sessionContainer = new HttpSessionStateContainer("id", new SessionStateItemCollection(),
new HttpStaticObjectsCollection(), 10, true,
HttpCookieMode.AutoDetect,
SessionStateMode.InProc, false);
httpContext.Items["AspSession"] = typeof(HttpSessionState).GetConstructor(
BindingFlags.NonPublic | BindingFlags.Instance,
null, CallingConventions.Standard,
new[] { typeof(HttpSessionStateContainer) },
null)
.Invoke(new object[] { sessionContainer });
return httpContext;
}
}
Test:
[Fact]
public void AdminGetBusAcntById()
{
HttpContext.Current = MockHelpers.FakeHttpContext();
var mockMyDb = MockDbSetup.MockMyDb();
var controller = new BusAcntController(mockMy.Object);
var controllerContextMock = new Mock<ControllerContext>();
controllerContextMock.Setup( x => x.HttpContext.User.
IsInRole(It.Is<string>(s => s.Equals("Admin")))).Returns(true);
controller.ControllerContext = controllerContextMock.Object;
var viewResult = controller.Details(1) as ViewResult;
var model = viewResult.Model as BusAcntVm;
Assert.NotNull(model);
Assert.Equal("Company 1", model.CmpnyName);
}
Milox 的代码似乎有意义,但我无法让它工作。
我错过了什么吗? MVC5 中是否有更改破坏了此代码?
解决方案:
实施达林的回答。我现在有一个会话来写入值(尽管这些值实际上并未写入其中,但出于测试目的不需要这样做)并且测试通过。
Test:
[Fact]
public void AdminGetBusAcntById()
{
var mockMyDb = MockDbSetup.MockMyDb();
var controller = new BusAcntController(mockMy.Object);
var context = new Mock<HttpContextBase>();
var session = new Mock<HttpSessionStateBase>();
var user = new GenericPrincipal(new GenericIdentity("fakeUser"), new[] { "Admin" });
context.Setup(x => x.User).Returns(user);
context.Setup(x => x.Session).Returns(session.Object);
var requestContext = new RequestContext(context.Object, new RouteData());
controller.ControllerContext = new ControllerContext(requestContext, controller);
var viewResult = controller.Details(1) as ViewResult;
var model = viewResult.Model as BusAcntVm;
Assert.NotNull(model);
Assert.Equal("Company 1", model.CmpnyName);
}