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POGot NullReferenceException when Unit testing Controller
 

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  1. POGot NullReferenceException when Unit testing Controller
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    <p>I am working on Unit testing the MVC3 site using NUnit, MvcContrib.TestHelper package but I am facing the exception "Object reference not set to an instance of an object" when my test method accesses the controller having TryUpdateModel. I dont know what to do to pass the test. please help me in this.</p> <p>I am also giving a code for that :</p> <p>Action from Controller which test method calls, is given below :</p> <pre><code>public JsonResult AddPatient() { bool returnStatus; string returnErrorMessage; List&lt;string&gt; returnMessage; PatientBLL patientBLL = new PatientBLL(); Models.PatientViewModel patientViewModel = new Models.PatientViewModel(); TryUpdateModel(patientViewModel); Patient patient = patientBLL.AddPatient( patientViewModel, out returnMessage, out returnStatus, out returnErrorMessage); patientViewModel.UpdateViewModel(patient, typeof(Patient).GetProperties()); patientViewModel.ReturnMessage = returnMessage; patientViewModel.ReturnStatus = returnStatus; return Json(patientViewModel); } </code></pre> <p>and the test method which calls the above action is given below : </p> <pre><code>[Test] public void Test_AddPatient() { TestControllerBuilder builder = new TestControllerBuilder(); string uniquePatientKey = GenerateUniqueID(); builder.Form["MedicalID"] = uniquePatientKey; builder.Form["SocialSecurityNumber"] = uniquePatientKey; builder.Form["FirstName"] = "Khushi"; builder.Form["LastName"] = "Maahi"; builder.Form["AddressLine1"] = "ABCD"; builder.Form["AddressLine2"] = "Technologies"; builder.Form["City"] = "OOna"; builder.Form["State"] = "UP"; builder.Form["ZipCode"] = "98456-7329"; builder.Form["PhoneNumber"] = "(425)882-8080"; builder.Form["DateOfBirth"] = "10/28/1987"; builder.Form["PatientDateOfBirth"] = "10/28/1987"; builder.Form["EffectiveDate"] = "01/01/1995"; builder.Form["PatientEffectiveDate"] = "01/01/1995"; PatientController patientController = builder.CreateController&lt;PatientController&gt;(); JsonResult jsonResult = (JsonResult)patientController.AddPatient(); dynamic jsonData = jsonResult.Data; string jsonMessage=Convert.ToString(jsonData.ReturnMessage); Assert.AreEqual(jsonData.ReturnStatus, true ); Assert.Greater(jsonData.PatientID, 0); } </code></pre> <p>Please give me the solution for my probelm.</p>
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    1. USNupur
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    1. PO
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    1. COIt would help if you ran this test in Debug mode and told us what line it's actually failing on. CTRL+R, CTRL+T to run the test in debug mode.
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      1. POGot NullReferenceException when Unit testing Controller
      1. USmattypiper
    2. COI tried to do that and when debug mode reaches to TryUpdateModel() statement in the Action from Test method it gives this error.
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      1. POGot NullReferenceException when Unit testing Controller
      1. USNupur
 

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