throw tempdata from businesslogic class to controller - asp.net-mvc

i have code like this in my businesslogic class:
if (userList != null) {
pass = userList.Password;
}
else
{
var context = new RequestContext(
new HttpContextWrapper(System.Web.HttpContext.Current),
new RouteData());
var urlHelper = new UrlHelper(context);
var url = urlHelper.Action("Login", "Account");
// how to throw tempdata like this to: TempData["message"] = "Error";
System.Web.HttpContext.Current.Response.Redirect(url);
}
can i possible to throw tempdata from businesslogic class to controller?

Related

Display ads on multiple Views by using single controller method in MVC

I want to display different ads on multiple Views from single method. Currently, I have created separate controller method for the ads and then passing page name by using session from each View's controller method. I want to get rid off any code related to ads from each controller method.
Please suggest me way to do this.
Home controller
public ActionResult Index()
{
ClsHomeContent model = new ClsHomeContent();
List<Advertisement> advertList = new List<Advertisement>();
var context = new ApplicationDbContext();
var advert = context.Advertisement.ToList();
var pageName = context.Advertisement.Where(x => x.Page == "Home").Select(y => y.Page).FirstOrDefault();
Session["PageName"] = pageName;
return View(model);
}
HorseTracker Controller
public ActionResult HorseTracker()
{
List<Advertisement> advertList = new List<Advertisement>();
var advert = context.Advertisement.ToList();
var pageName = context.Advertisement.Where(x => x.Page == "HorseTracker").Select(y => y.Page).FirstOrDefault();
Session["PageName"] = pageName;
return View(model);
}
Then using this session value
public ClsAdvertisment advertPosition()
{
List<Advertisement> advertList = new List<Advertisement>();
ClsAdvertisment model = new ClsAdvertisment();
var context = new ApplicationDbContext();
var advert = context.Advertisement.ToList();
foreach (var advertisementData in advert)
{
if (advertisementData.Position == Session["PageName"] + "_Top_Left" || advertisementData.Position == Session["PageName"] + "_Top_Right" || advertisementData.Position == Session["PageName"] + "_Middle" || advertisementData.Position == Session["PageName"] + "_Left")
{
advertList.Add(new Advertisement()
{
AdvertId = advertisementData.AdvertId,
Position = advertisementData.Position,
FilePath = advertisementData.FilePath,
Hemisphere = advertisementData.Hemisphere,
Link = advertisementData.Link,
Title = advertisementData.Title
});
}
}
model.advertisement = advertList;
return model;
}
[ChildActionOnly]
public PartialViewResult Advertisement()
{
var model= advertPosition();
return PartialView("_pAdvertisement", model);
}
Created separate partial view
foreach (var item in Model.advertisement)
{
if (#item.Hemisphere == 1 && item.Position == (string)Session["PageName"]+"_Top_Left")
{
<a href="#item.Link" title="#item.Title" target="_blank">
#Html.Image(item.FilePath, "Image", "", "")
</a>
}
}
You can get the name of the parent controller and action methods in the child method using the ParentActionViewContext property of ControllerContext
[ChildActionOnly]
public PartialViewResult Advertisement()
{
ViewContext context = ControllerContext.ParentActionViewContext;
string controllerName = context.RouteData.Values["controller"].ToString();
string actionName = context.RouteData.Values["action"].ToString();
ClsAdvertisment model = advertPosition(controllerName, actionName);
return PartialView("_pAdvertisement", model);
}
Then modify your advertPosition() to
public ClsAdvertisment advertPosition(string controllerName, string actionName)
and within that method, select the ads to be displayed based on those values, and there is also no need to use Session.

How to unit test this .net MVC function?

I have this function and unit test.
ProfileController Code
[HttpPost]
public ActionResult Edit(int? id)
{
var redirectUrl = new UrlHelper(Request.RequestContext).Action("Index", "Profile", new { id = 0 });
return Json(new { Url = redirectUrl });
}
unit test code
[TestMethod]
public void TestDetailsViewData()
{
var controller = new ProfileController(_Profile);
var result = controller.Edit(1) as ViewResult;
var profile = (VIEWMODELS.Customer.Profile)result.ViewData.Model;
Assert.AreEqual("Testor", profile.cardName);
}
i would like to test this function and this function will redirect to index page and return ViewPage with data. But the problem is when i run this unit test code i got Null exception at this line ,because of the Request is NULL
var redirectUrl = new UrlHelper(Request.RequestContext).Action("Index", "Profile", new { id = 0 });
so may i know how could i test this?
Updated with Moq function
After further reading and get some sample code from here it seem request able to filled with value but now the RequestContext is NULL, anyone can point me to right place for me to study?
[TestMethod]
public void TestDetailsViewData()
{
var request = new Mock<HttpRequestBase>();
request.SetupGet(x => x.Headers).Returns(
new System.Net.WebHeaderCollection {
{"X-Requested-With", "XMLHttpRequest"}
});
var context = new Mock<HttpContextBase>();
context.SetupGet(x => x.Request).Returns(request.Object);
//context.SetupGet(x => x.Request.RequestContext ).Returns(request.Object.RequestContext);
var controller = new ProfileController(_Profile);
controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller);
controller.Request.RequestContext = context.Object.Request.RequestContext;
var result = controller.Edit(1) as ViewResult;
var profile = (VIEWMODELS.Customer.Profile)result.ViewData.Model;
Assert.AreEqual("testor", profile.cardName);
}
The error is occurring because the request is not defined in Test method.I think you have to use visual studio fakes.
https://msdn.microsoft.com/en-us/library/hh549175.aspx

Moq a fake cookie in Asp.Net MVC Controller

This is my Action for my Login Controller. I am able to mock the action using Moq.
But i get an error when it hits this.HttpContext.Response.Cookies.Set(new HttpCookie("AcceptedDoDNotice") { Expires = DateTime.Now.AddDays(-1) });
Error:Additional information: Object reference not set to an instance of an object.
How do i Mock the cookie so i wont get the error above?
public ActionResult Login(LoginViewModel model)
{
if (ModelState.IsValid)
{
var user = _uow.UserRepository.FindLogin(model.Email, model.Password);
if (user != null)
{
_uow.UserRepository.UpdateLastLoginDate(user);
_uow.SaveChanges();
this.HttpContext.Response.Cookies.Set(new HttpCookie("MyCookie") { Expires = DateTime.Now.AddDays(-1) });
if (user.UserLevel.IsAdmin)
return RedirectToAction("Index", "Administrator");
}
else
{
ModelState.AddModelError("", "Invalid username or password.");
}
}
return View(model);
}
The Moq test is below:
//Arrange
var model = new LoginViewModel();
model.Email = realEmail;
model.Password = realPassword;
//Act
var loginController = new LoginController();
var result = loginController.Login(model) as RedirectToRouteResult;
var actual = result.RouteValues["controller"].ToString();
//Assert
actual.Should().Be("Administrator");
You need to mock the controller context. This will allow you to provide a mocked response which in turn provides a cookie collection that you control. You can then see exactly which cookies were set on the response.
var cookieCollection = new HttpCookieCollection { };
var response = new Mock<HttpResponseBase>();
response.SetupGet(r => r.Cookies).Returns(cookieCollection);
var context = new Mock<HttpContextBase>();
context.SetupGet(x => x.Response).Returns(response.Object);
var loginController = new LoginController();
loginController.ControllerContext = new ControllerContext(context.Object, new RouteData(), loginController);
var model = new LoginModel { };
var result = loginController.Login(model) as RedirectToRouteResult;
var actual = result.RouteValues["controller"].ToString();
//Assert
actual.Should().Be("Administrator");
cookieCollection.Should().HaveCount(1);
// other assertions about your cookie

mvc3, can you give controller a display name?

I am using mvc3. is it possible to give controller and action a display name.
[DisplayName("Facebook Employee")]
public class EmployeeController : Controller
in my breadcrumb, I will get the controller name and action name
#{
var controllerName = ViewContext.RouteData.Values["Controller"];
var actionName = ViewContext.RouteData.Values["Action"];
}
I expect to see "Facebook Employee", but its not working.
You'll have to reflect on the Controller type itself, using GetCustomAttributes. Use ViewContext.Controller to get a reference to the controller itself. Something like this:
string controllerName;
Type type = ViewContext.Controller.GetType();
var atts = type.GetCustomAttributes(typeof(DisplayNameAttribute), false);
if (atts.Length > 0)
controllerName = ((DisplayNameAttribute)atts[0]).DisplayName;
else
controllerName = type.Name; // fallback to the type name of the controller
Edit
To do similar for an action, you need to first reflect on the method, using Type.GetMethodInfo:
string actionName = ViewContext.RouteData.Values["Action"]
MethodInfo method = type.GetMethod(actionName);
var atts = method.GetCustomAttributes(typeof(DisplayNameAttribute), false);
// etc, same as above
public static class HLP
{
public static string DisplayNameController(this WebViewPage wvp)
{
if (wvp.ViewBag.Title != null && (wvp.ViewBag.Title as string).Trim().Length > 0)
return wvp.ViewBag.Title;
ControllerBase Controller = wvp.ViewContext.Controller;
try
{
DisplayNameAttribute[] attr = (DisplayNameAttribute[])Controller.GetType().GetCustomAttributes(typeof(DisplayNameAttribute), false);
string DisplayName = attr[0].DisplayName;
return DisplayName;
}
catch (Exception)
{
return Controller.ToString();
}
}
public static string DisplayNameAction(this WebViewPage wvp)
{
string actionName = wvp.ViewContext.RouteData.Values["Action"].ToString();
try
{
Type type = wvp.ViewContext.Controller.GetType();
MethodInfo method = type.GetMethod(actionName);
DisplayNameAttribute[] attr = (DisplayNameAttribute[])method.GetCustomAttributes(typeof(DisplayNameAttribute), false);
string DisplayName = attr[0].DisplayName;
return DisplayName;
}
catch (Exception)
{
return actionName;
}
}
}
<title>#this.DisplayNameAction()</title>

How to mock the Request on Controller in ASP.Net MVC?

I have a controller in C# using the ASP.Net MVC framework
public class HomeController:Controller{
public ActionResult Index()
{
if (Request.IsAjaxRequest())
{
//do some ajaxy stuff
}
return View("Index");
}
}
I got some tips on mocking and was hoping to test the code with the following and RhinoMocks
var mocks = new MockRepository();
var mockedhttpContext = mocks.DynamicMock<HttpContextBase>();
var mockedHttpRequest = mocks.DynamicMock<HttpRequestBase>();
SetupResult.For(mockedhttpContext.Request).Return(mockedHttpRequest);
var controller = new HomeController();
controller.ControllerContext = new ControllerContext(mockedhttpContext, new RouteData(), controller);
var result = controller.Index() as ViewResult;
Assert.AreEqual("About", result.ViewName);
However I keep getting this error:
Exception
System.ArgumentNullException:
System.ArgumentNullException : Value
cannot be null. Parameter name:
request at
System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest(HttpRequestBase
request)
Since the Request object on the controller has no setter. I tried to get this test working properly by using recommended code from an answer below.
This used Moq instead of RhinoMocks, and in using Moq I use the following for the same test:
var request = new Mock<HttpRequestBase>();
// Not working - IsAjaxRequest() is static extension method and cannot be mocked
// request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */);
// use this
request.SetupGet(x => x.Headers["X-Requested-With"]).Returns("XMLHttpRequest");
var context = new Mock<HttpContextBase>();
context.SetupGet(x => x.Request).Returns(request.Object);
var controller = new HomeController(Repository, LoginInfoProvider);
controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller);
var result = controller.Index() as ViewResult;
Assert.AreEqual("About", result.ViewName);
but get the following error:
Exception System.ArgumentException:
System.ArgumentException : Invalid
setup on a non-overridable member: x
=> x.Headers["X-Requested-With"] at Moq.Mock.ThrowIfCantOverride(Expression
setup, MethodInfo methodInfo)
Again, it seems like I cannot set the request header.
How do I set this value, in RhinoMocks or Moq?
Using Moq:
var request = new Mock<HttpRequestBase>();
// Not working - IsAjaxRequest() is static extension method and cannot be mocked
// request.Setup(x => x.IsAjaxRequest()).Returns(true /* or false */);
// use this
request.SetupGet(x => x.Headers).Returns(
new System.Net.WebHeaderCollection {
{"X-Requested-With", "XMLHttpRequest"}
});
var context = new Mock<HttpContextBase>();
context.SetupGet(x => x.Request).Returns(request.Object);
var controller = new YourController();
controller.ControllerContext = new ControllerContext(context.Object, new RouteData(), controller);
UPDATED:
Mock Request.Headers["X-Requested-With"] or Request["X-Requested-With"] instead of Request.IsAjaxRequest().
For anyone using NSubstitute I was able to modify the above answers and do something like this... (where Details is the Action method name on the controller)
var fakeRequest = Substitute.For<HttpRequestBase>();
var fakeContext = Substitute.For<HttpContextBase>();
fakeRequest.Headers.Returns(new WebHeaderCollection { {"X-Requested-With", "XMLHttpRequest"}});
fakeContext.Request.Returns(fakeRequest);
controller.ControllerContext = new ControllerContext(fakeContext, new RouteData(), controller);
var model = new EntityTypeMaintenanceModel();
var result = controller.Details(model) as PartialViewResult;
Assert.IsNotNull(result);
Assert.AreEqual("EntityType", result.ViewName);
Here is a working solution using RhinoMocks. I've based it on a Moq solution I found at http://thegrayzone.co.uk/blog/2010/03/mocking-request-isajaxrequest/
public static void MakeAjaxRequest(this Controller controller)
{
MockRepository mocks = new MockRepository();
// Create mocks
var mockedhttpContext = mocks.DynamicMock<HttpContextBase>();
var mockedHttpRequest = mocks.DynamicMock<HttpRequestBase>();
// Set headers to pretend it's an Ajax request
SetupResult.For(mockedHttpRequest.Headers)
.Return(new WebHeaderCollection() {
{"X-Requested-With", "XMLHttpRequest"}
});
// Tell the mocked context to return the mocked request
SetupResult.For(mockedhttpContext.Request).Return(mockedHttpRequest);
mocks.ReplayAll();
// Set controllerContext
controller.ControllerContext = new ControllerContext(mockedhttpContext, new RouteData(), controller);
}
Is AjaxRequest is an extension method. So you can do it the following way using Rhino:
protected HttpContextBase BuildHttpContextStub(bool isAjaxRequest)
{
var httpRequestBase = MockRepository.GenerateStub<HttpRequestBase>();
if (isAjaxRequest)
{
httpRequestBase.Stub(r => r["X-Requested-With"]).Return("XMLHttpRequest");
}
var httpContextBase = MockRepository.GenerateStub<HttpContextBase>();
httpContextBase.Stub(c => c.Request).Return(httpRequestBase);
return httpContextBase;
}
// Build controller
....
controller.ControllerContext = new ControllerContext(BuildHttpContextStub(true), new RouteData(), controller);
Looks like you are looking for this,
var requestMock = new Mock<HttpRequestBase>();
requestMock.SetupGet(rq => rq["Age"]).Returns("2001");
Usage in Controller :
public ActionResult Index()
{
var age = Request["Age"]; //This will return 2001
}
In current .NET (v 5):
var controller = new SomeController(); // SomeController that inherits Microsoft.AspNetCore.Mvc.ControllerBase
var httpContext = new DefaultHttpContext(); // DefaultHttpContext class is part of Microsoft.AspNetCore.Http namespace
httpContext.Request.Headers.Add("origin", "0.0.0.1"); // Add your custom headers to request
controller.ControllerContext.HttpContext = httpContext;
You need to mock HttpContextBase and put it into your ControllerContext property, like that:
controller.ControllerContext =
new ControllerContext(mockedHttpContext, new RouteData(), controller);
To make IsAjaxRequest() to return false during Unit test you need to setup Request Headers as well as request collection value both in your test method as given below:
_request.SetupGet(x => x.Headers).Returns(new System.Net.WebHeaderCollection { { "X-Requested-With", "NotAjaxRequest" } });
_request.SetupGet(x=>x["X-Requested-With"]).Returns("NotAjaxRequest");
The reason for setting up both is hidden in implementation of IsAjaxRequest() which is given below:
public static bool IsAjaxRequest(this HttpRequestBase request)<br/>
{
if (request == null)
{
throw new ArgumentNullException("request");
}
return ((request["X-Requested-With"] == "XMLHttpRequest") || ((request.Headers != null) && (request.Headers["X-Requested-With"] == "XMLHttpRequest")));
}
It uses both request Collection and header this is why we need to create setup for both Header and Request Collection.
this will make the request to return false when it is not a ajax request. to make it return true you can do the following:
_httpContext.SetupGet(x => x.Request["X-Requested-With"]).Returns("XMLHttpRequest");
I found other way to add a HttpRequestMessage object into your request during Web API as follow
[Test]
public void TestMethod()
{
var controllerContext = new HttpControllerContext();
var request = new HttpRequestMessage();
request.Headers.Add("TestHeader", "TestHeader");
controllerContext.Request = request;
_controller.ControllerContext = controllerContext;
var result = _controller.YourAPIMethod();
//Your assertion
}
(A bit late to the party but I went for a different route so thought I'd share)
To go for a pure code/mocking way of testing this without creating mocks for Http classes I implemented an IControllerHelper which has an Initialise method which takes the Request as a parameter and then exposed properties I want eg:
public interface IControllerHelper
{
void Initialise(HttpRequest request);
string HostAddress { get; }
}
public class ControllerHelper : IControllerHelper
{
private HttpRequest _request;
public void Initialise(HttpRequest request)
{
_request = request;
}
public string HostAddress => _request.GetUri().GetLeftPart(UriPartial.Authority);
}
Then in my controller I call initialise at the start of the method:
_controllerHelper.Initialise(Request);
And then my code is only dependent on mockable dependacies.
return Created(new Uri($"{_controllerHelper.HostName}/api/MyEndpoint/{result.id}"), result);
For functional tests I just override the iControllerHelper in the composition for a substitute.

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