How would I reference a viewModel in a unit test?

Question

I have the following action:

public ViewResult Index() { var model = new MyIndexViewModel { TotalTips = (decimal)7.51 }; return View(model); }

I would like to write a unit test that verifies that model.TotalTips is 7.51.

I am trying something like this:

[TestMethod] public void Test() { // Arrange var controller = new MyController(_mockRepository.Object); MyIndexViewModel test = new MyIndexViewModel{TotalTips = (decimal)7.51}; // Action ViewResult result = controller.Index(); // Assert Assert.AreEqual(result.ViewData.Model.TotalTips, test.TotalTips); // Problem line }

But I cannot resolve TotalTips on result.ViewData.Model.TotalTips.

I know this is wrong, but cannot figure out how to properly resolve the model I am posting to the Index view.

Lee · Accepted Answer · 2012-10-03 17:30:10Z

According to the documentation ViewDataDictionary.Model is typed as object, so you'll have to cast it to your view model type:

var viewModel = (MyIndexViewModel)result.ViewData.Model; Assert.AreEqual(viewModel.TotalTips, test.TotalTips);

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