Question

MyModel _model = new MyModel() { PriceDate = new DateTime(2000, 1, 1)};

var helper = new System.Web.Mvc.HtmlHelper<MyModel>(new ViewContext(), new ViewPage());
var result = helper.DisplayFor(m => _model.PriceDate);

Assert.That(result, Is.EqualTo(expected));

I want to test that the output produced by calling DisplayFor is in the format specified by…

[DisplayFormat(DataFormatString = "{0:dd/MM/yy}")]
public DateTime? PriceDate { get; set; }

The code compiles but fails with a NullReferenceException at DisplayFor.

Can anyone help me make this work?

(Note: This is a trivial example of a larger problem)

Answer 1

The steps are quite long so I couldn’t write here. I wrote about it at my blog 😀

http://thoai-nguyen.blogspot.com/2011/07/unit-test-displayformat-attribute.html

Cheers