CODEWITHSUNDEEP
c#asp.net-mvcunit-testingmoq
User456789
User456789

Reputation: 397

Moq Controller to ControllerBase convert error

I am getting this error when I am trying to use moq so that I can access application variables. In this case the application variable is ConnectionString with a value of TheConnectionString. I need the value to be available in the GetCompanyList() because the value is used inside accountService class

The Error is :

Error 5 Argument 3: cannot convert from 'Webapp.AccountServiceController' to 'System.Web.Mvc.ControllerBase'

[TestMethod]
public void TestGetCompanyList()
 {
     var accountController = new AccountServiceController();
     var context = new Mock<HttpContextBase>();
     var application = new Mock<HttpApplicationStateBase>();
     var request = new Mock<HttpRequestBase>();

     application.Setup(m => m.Add("ConnectionString","TheConnectionString");
     request.SetupGet(x => x.Headers).Returns(new System.Net.WebHeaderCollection { { "X-Requested-With", "XMLHttpRequest" } });
     context.SetupGet(ctx => ctx.Request).Returns(request.Object);
     context.SetupGet(ctx => ctx.Application).Returns(application.Object);

     accountController.ControllerContext = new ControllerContext(context.Object, new RouteData(), accountController); //Error here

     CompanyInput cInput = new CompanyInput();
     cInput.IssuerName = "Be";
     cInput.Ticker = "BR";
     var result = accountController.GetCompanyList(cInput) as IEnumerable<CompanyListResult>;
     Assert.IsNotNull(result);
 }

Controller:

public class AccountServiceController : ApiController
{
    public AccountServiceFacade accoutService;
    public AccountServiceController()
    {
        accoutService = new AccountServiceFacade();
    }

    public AccountServiceController(AccountServiceFacade facade)
    {
        accoutService = facade;
    }

    [System.Web.Http.HttpPost]
    public dynamic GetCompanyList([FromBody]CompanyInput cInput)
    {
        IEnumerable<CompanyListResult> companyList = accoutService.GetCompanyList(cInput);
        return companyList;
    }
}

UPDATE:

 [TestMethod]
    public void TestGetCompanyList()
    {
        var controller = new AccountServiceController();
        var config = new HttpConfiguration();
        var request = new HttpRequestMessage(HttpMethod.Get, "http://localhost/api/test");
        var route = config.Routes.MapHttpRoute("DFS", "api/{controller}/{id}");
        var routeData = new HttpRouteData(route, new HttpRouteValueDictionary
        {
            {
                "ConnectionString", "TheConnectionString" 

            },
            {
                "Username", "TheUserName"
            }
        });
        controller.ControllerContext = new HttpControllerContext(config, routeData, request);
        controller.Request = request;
        controller.Request.Properties[HttpPropertyKeys.HttpConfigurationKey] = config;

        CompanyInput cInput = new CompanyInput();
        cInput.IssuerName = "Be";
        cInput.Ticker = "BR";
        var result = controller.GetCompanyList(cInput) as IEnumerable<CompanyListResult>;
        Assert.IsNotNull(result);

        //Assert.IsNotNull(result.IssueTicker);
    }

Now when my code reaches this line(which is in class that gets called by the accountService)

static string _authUsername = HttpContext.Current.Application["Username"].ToString();

The test throws this error : System.NullReferenceException: Object reference not set to an instance of an object.1

Upvotes: 0

Views: 2409

Answers (2)

Niraj Trivedi
Niraj Trivedi

Reputation: 2880

I found other way to add a ControllerContext object into your webcontroller.ControllerContext 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
}

Upvotes: 0

mfanto
mfanto

Reputation: 14428

The problem is that your AccountServiceController does not inherit from ControllerBase, it inherits from ApiController. The ControllerContext you're creating (on the line that errors) is for MVC controllers, and expects the last parameter to be of type ControllerBase.

You need to use HttpControllerContext from System.Web.Http. The last parameter is an IHttpController, which ApiController implements.

See here for an example of how to mock HttpControllerContext.

Upvotes: 1

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