Testing ASP.NET MVC View Model

Question

I'm using Nunit and Moq to test my asp.net mvc solution. Is this a good way to test that the model passed to the view is a correct object/collection? ``` [Test] public void Start_Page_Should_Display_Posts() { var posts = new List {new Post {Id = 1}, new Post {Id = 2}}; var mock = new Mock(); mock.Setup(x => x.FindAll()).Returns(posts.AsQueryable()); var controller = new PostsController(mock.Object); var result = controller.Index(null) as ViewResult; var viewModel = controller.ViewData.Model as IEnumerable; Assert.IsNotNull(result); Assert.IsTrue(viewModel.Count() == mock.Object.FindAll().Count()); } ``` I understand that this kind of tests the framework, but hopefully you'll get my point. Can I trust this test? Currently i'm a bit tired so don't hesitate to ask for an elaboration. Thanks

Accepted Answer

No it doesn't test (only?) the framework. It tests that executing the action results in a ViewModel consisting of a not-null, collection of the same count as the one supplied in the mock.

You could simplify the last condition into

```
Assert.IsTrue(viewModel.Count() == posts.Count);
```

or even

```
Assert.IsTrue(viewModel.Count() == 2);
```

I mean it's a unit test, it's normal to have some hardcoded values in there.

Testing ASP.NET MVC View Model

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