ASP.NET-MVC – Try to throw MissingMethodeXception when you use MOQ to simulate HTMLHELPER

public static HtmlHelper CreateHtmlHelper(ViewDataDictionary vd)
 {< br /> Mock mockViewContext = new Mock(
 new ControllerContext(
 new Mock().Object,
 new RouteData(),
 newMock().Object),
 new Mock().Object,
 vd,
 new TempDataDictionary());

 Mock< IViewDataContainer> mockViewDataContainer = new Mock();
 mockViewDataContainer.Setup(v => v.ViewData).Returns(vd);

 return new HtmlHelper(mockViewContext.Object, mockViewDataContainer .Object);
 }

public static HtmlHelper CreateHtmlHelper(ViewDataDictionary vd)
{
 Mock mockViewContext = new Mock (
 new ControllerContext(
 new Mock().Object,
 new RouteData(),
 new Mock().Object),
 new Mock().Object,
 vd,
 new TempDataDictionary(),
 new Mock().Object);

 mockViewContext. Setup(vc => vc.ViewData).Returns(vd);

 var mockViewDataContainer = new Mock();
 mockViewDataContainer.Setup(v => v.ViewData)< br /> .Returns(vd);

 return new HtmlHelper(mockViewContext.Object,
 mockViewDataContainer.Object);
}

When trying to follow When article on mocking the htmlhelper with Moq, I encountered the following problem. An exception was thrown when creating htmlhelper. I just guessed that the castle windsor is being used (by viewing the error message).

Exception:< /p>

MissingMethodException occurred

Constructor on type’Castle.Proxies.ViewContextProxy’ not found.

Stack Tracking:

at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)

< /blockquote>

Code:

public static HtmlHelper CreateHtmlHelper(ViewDataDictionary vd)
 {
 Mock mockViewContext = new Mock (
 new ControllerContext(
 new Mock().Object,
 new RouteData(),
 new Mock().Object),
new Mock().Object,
 vd,
 new TempDataDictionary());

 Mock mockViewDataContainer = new Mock();
 mockViewDataContainer.Setup(v => v.ViewData).Returns(vd);

 return new HtmlHelper(mockViewContext.Object, mockViewDataContainer.Object);
 }

< p>I’m using ASP MVC 2, Moq 4.0 beta 3, VS2010, using the IDE’s testing framework.

How to solve the problem and return an instance of HtmlHelper?

I have reproduced your problem with the code in my blog post. The following updated method works for me:

public static HtmlHelper CreateHtmlHelper(ViewDataDictionary vd)
{
 Mock mockViewContext = new Mock(
 new ControllerContext(
 new Mock().Object,
 new RouteData(),
 new Mock().Object),
 new Mock().Object,
 vd,
 new TempDataDictionary(),
 new Mock().Object);

 mockViewContext.Setup(vc => vc.ViewData).Returns( vd);

 var mockViewDataContainer = new Mock();
 mockViewDataContainer.Setup(v => v.ViewData)
 .Returns(vd);

 return new HtmlHelper(mockViewContext.Object,
 mockViewDataContainer.Object);
}

I also posted an update on my blog.