Unit Testing a RedirectToAction with parameter - asp.net-mvc

Question

I have an MVC Controller Class that I am trying to Unit Test.
The particular ActionResult is like this
public ActionResult Create(Shipment newShipment)
{
do some stuff to create a shipmentID
...
return RedirectToAction("AddUnit",newShipment.ShipmentID);
}
I have mocked up the controller context etc and now I want to test that the newShipment.ShipmentID passed to the RedirectToAction call is what I expect.
I have a test (with lots of mocking of things in the setup phase)
[Test]
public void CreateSuccess()
{
//Arrange
var shipment = new Shipment();
shipment.Widgets = 2; //Make sure it a valid shipment otherwise
//Act
var result = controller.Create(shipment) as RedirectToRouteResult;
//Assert
Assert.IsNotNull(result);
Assert.AreEqual("AddUnits", result.RouteValues["action"]);
Assert.IsNull(result.RouteValues["controller"]);
...
And now I want to find an Assert to check that the shipmentID I pass to RedirectToAction is the right one. How do I retrieve its value?
(I believe this code works for real (ie the actual view gets the correct shipmentID) but I want to write a unit test ).

Answer 1

Actually, RedirectToActions can take parameters; below is a simplified example of how I tested for correct parameters in one. I'm using NUnit & FluentAssertions here.
[HttpPost]
public ActionResult RedirectMethod()
{
return RedirectToAction("Index", "Home", new { parameter = "Value" });
}
and then the test:
[Test]
public void RedirectSetsExpectedParameters()
{
var result = controller.RedirectMethod();
var redirectResult = result.As<RedirectToRouteResult>();
var expectedRedirectValues = new RouteValueDictionary
{
{ "parameter", "Value" },
{ "action", "Index" },
{ "controller", "Home" }
};
redirectResult
.RouteValues
.ShouldBeEquivalentTo(expectedRedirectValues,
"The redirect should look as I expect, including the parameters");
}

Answer 2

Here i given one sample for Redirect to action
public ActionResult Signupsuccess(string account_code, string plan)
{
..........
do some stuff
return RedirectToAction("SubscriptionPlan", "Settings");
}
I have mocked up controllercontext and passed some parameter to RedirectToAction call from controller to test method.Finally it tested both the expected and actual
[TestMethod()]
public void SignupsuccessTest()
{
HomeController target = new HomeController(); // TODO: Initialize to an appropriate value
string account_code = "B898YB7"; // TODO: Initialize to an appropriate value
string plan = "Application-BASIC"; // TODO: Initialize to an appropriate value
var ControllerContext = new Mock<ControllerContext>();
var context = target.HttpContext;
ControllerContext.SetupGet(p => p.HttpContext.Session["MerchantID"]).Returns("15");
ControllerContext.SetupGet(p => p.HttpContext.Session["FriendlyIdentifier"]).Returns("3d649876-19f5-48d2-af03-ca89083ae712");
target.ControllerContext = controllerContext.Object;
var action = (RedirectToRouteResult)target.Signupsuccess(account_code, plan);
action.RouteValues["action"].Equals("SubscriptionPlan");
action.RouteValues["controller"].Equals("Settings");
Assert.AreEqual("SubscriptionPlan", action.RouteValues["action"]);
Assert.AreEqual("Settings", action.RouteValues["controller"]);
}
I Hope really it will helpful for you.Thank You