CODEWITHSUNDEEP
unit-testingasp.net-mvc-2nerddinnerviewresult
Jas
Jas

Reputation: 13

ViewResult returns no data

I am using the pattern from NerdDinner. I call Index() in my test Method and I the ViewREsult I get back has no data. So the variable data ends up being null.

However, I know that there is data there. Because I can go to the watch window and expand the variable result and expand viewData->Model->ResultsView then I see the "expanding will result view will enumerate the IEnumerable" When I expand it, the data exists.

Any idea why the data comes back null unless I expand?

thanks Jas

   [TestMethod]
    public void Index__Should_Return_1_or_More_lessons()
    {
        var controller = new LessonController(new FakeLessonRepository());

        var result = controller.Index() as ViewResult;

        var data = result.ViewData.Model as IList<Lesson>;
        Assert.IsTrue(data.Count > 0);
    }

Upvotes: 1

Views: 588

Answers (1)

Buildstarted
Buildstarted

Reputation: 26689

It's because of Lazy Loading in Linq or EF (depending on what you're using) The queries are only executed when needed. You can force it to be executed by calling a finalizer like ToList() or ToArray() or something similar.

Upvotes: 1

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