Creates HtmlHelper mock for testing

HtmlHelperTests.cs

[TestFixture]
public class HtmlHelperTests
{
  // here put some tests...

  public static HtmlHelper<T> CreateHtmlHelper<T>() where T : new ()
  {
    ViewDataDictionary viewData = new ViewDataDictionary(new T());

    var controllerContext = new ControllerContext(
      new Mock<HttpContextBase>().Object, new RouteData(), new Mock<ControllerBase>().Object);

    var viewContext = new ViewContext(controllerContext, new Mock<IView>().Object, viewData, new TempDataDictionary(), new Mock<TextWriter>().Object);

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

    return new HtmlHelper<T>(viewContext, mockViewDataContainer.Object);
  }

  public static HtmlHelper CreateHtmlHelper()
  {
    var viewContext = new Mock<ViewContext>();
    var viewDataContainer = new Mock<IViewDataContainer>();

    return new HtmlHelper(viewContext.Object, viewDataContainer.Object);
  }
}