I tried the new Razor viewer engine with MVC 3 Preview 1 and would like to write a simple unit test using NUnit / Moq. I have not seen examples of how this is actually done - despite the fact that this is one of the real selling functions on Razor.
So, if I have a controller that uses a DBConext object (CTP EF4 code first), and the view displays a drop-down list based on the list of elements provided in the model loaded in the action called by the controller, I would like to be able to verify that the element contains there are elements in it.
Here is my controller:
public class WeatherReportController : Controller, IWeatherReportController
{
private IWeatherDb _weatherDb;
public WeatherReportController()
{
this._weatherDb = new WeatherDb();
}
public ActionResult Index()
{
WeatherReportIndexModel model = new WeatherReportIndexModel
{
Report = new WeatherReport {
Username = this.HttpContext.User.Identity.Name,
WeatherType = new WeatherType()
},
WeatherTypeList = _weatherDb.GetAllWeatherTypes()
};
return View(model);
}
}
Here is my model:
public class WeatherReportIndexModel
{
private IList<WeatherType> _weatherTypeList = new List<WeatherType>();
public IList<WeatherType> WeatherTypeList {
get
{
return _weatherTypeList;
}
set
{
_weatherTypeList = value;
}
}
[DisplayName("Type of Weather")]
public IList<SelectListItem> WeatherTypeSelectItemList
{
get
{
int id = this.Report.WeatherType == null ? 0 : this.Report.WeatherType.WeatherTypeId;
List<SelectListItem> selectListItems = this.WeatherTypeList.Select(weatherType => new SelectListItem
{
Value = weatherType.WeatherTypeId.ToString(),
Text = weatherType.Name,
Selected = weatherType.WeatherTypeId == id
}).ToList();
selectListItems.Insert(0, new SelectListItem { Selected = (this.Report.WeatherType == null), Text = "Select Type of Weather", Value = "0" });
return selectListItems;
}
}
public WeatherReport Report { get; set; }
}
And here is my view:
@inherits System.Web.Mvc.WebViewPage<Web.UI.Models.WeatherReportIndexModel>
@{
View.Title = "Index";
LayoutPage = "~/Views/Shared/_Layout.cshtml";
}
<h2>Index</h2>
@using (Html.BeginForm()) {
<div>
<fieldset>
<legend>New Weather Report</legend>
<div class="editor-label">
@Html.LabelFor(m => m.Report.WeatherType.WeatherTypeId)
@Html.DropDownListFor(m => m.Report.WeatherType.WeatherTypeId, Model.WeatherTypeSelectItemList)
<input type="submit" value="Log On" />
</div>
</fieldset>
</div>
}
The verification code that I still have is as follows:
[TestFixture]
public class WeatherReportViewTests
{
[Test]
public void Can_render_weather_report_index_view_correctly()
{
var mockControllerContext = new Mock<ControllerContext>();
var mockSession = new Mock<HttpSessionStateBase>();
mockControllerContext.Setup(p => p.HttpContext.Request.HttpMethod).Returns("POST");
mockControllerContext.Setup(p => p.HttpContext.Request.UserHostAddress).Returns("1.1.1.1");
mockControllerContext.Setup(p => p.HttpContext.Session).Returns(mockSession.Object);
mockControllerContext.Setup(p => p.HttpContext.Request.LogonUserIdentity).Returns(WindowsIdentity.GetCurrent());
var routeData = new RouteData();
routeData.Values.Add("controller", "WeatherReport");
routeData.Values.Add("action", "Index");
var viewEngine = new CshtmlViewEngine();
var view = viewEngine.FindView(mockControllerContext.Object, "Index", "_Layout", false);
var viewReponse = view.ToString();
Assert.That(viewReponse, Contains.Substring("Sunny Intervals"));
}
}
NullReferenceException.
/ .. . , , TDD .
!