Mocking Request.Url

Question

My controller using following line to assign url to the session

this.Session["MyUrl"] = Request.Url.ToString();

on unit test project side I setup controller like this

var fakeHttpContext = new Mock<HttpContextBase>(); var controllerContext = new Mock<ControllerContext>(); controllerContext.Setup(t => t.HttpContext).Returns(fakeHttpContext.Object); this.controller.ControllerContext = controllerContext.Object; controllerContext.SetupGet(x => x.HttpContext.Request.Url).Returns(new Uri("/Home/Details", UriKind.Relative));

on this last line I'm trying to setup Request.Url in order to pass the value I expect on the controller side.

All I'm getting as a result on Request.Url is '/Home/Details'.

Do I need to mock whole Url object inside request in order to get this to work?

Update: I setup session object in httpcontext setup

fakeHttpContext.Setup(x => x.Session["MyUrl"]).Returns("/Home/Details");

but still experiencing the same issue.

You specified /Home/Details in your mock. What value do you expect to get in the controller? — Darin Dimitrov
– Darin Dimitrov, Commented Jan 27, 2017 at 8:10
yes, that's exactly what I'm getting but still I'm getting Additional information: Object reference not set to an instance of an object e exception. My guess is that Request.Url.OriginalString is populated and all other Request.Url fields return exceptions. — user1765862
– user1765862, Commented Jan 27, 2017 at 8:24
Try providing an absolute url in your mock: new Uri("http://example.com/Home/Details"). — Darin Dimitrov
– Darin Dimitrov, Commented Jan 27, 2017 at 8:25

Darin Dimitrov · Accepted Answer · 2017-01-27 08:57:34Z

You don't seem to be properly mocking the ControllerContext. Try this:

// arrange var controller = new HomeController(); var context = new Mock<HttpContextBase>(); var session = new Mock<HttpSessionStateBase>(); context.Setup(x => x.Request.Url).Returns(new Uri("/Home/Details", UriKind.Relative)); context.Setup(x => x.Session).Returns(session.Object); var requestContext = new RequestContext(context.Object, new RouteData()); controller.ControllerContext = new ControllerContext(requestContext, controller); // act var actual = controller.Index(); // assert session.VerifySet(x => x["MyUrl"] = "/Home/Details"); ...

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