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POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
 

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  1. POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
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    <p>I ran into serious problem while testing my Controller in ASP.NET MVC 3.0.</p> <p>Here is one of the controller's methods:</p> <pre><code> public ActionResult Create(FormCollection collection) { IModel model = null; model = modeldao.createNewObject(ref model); TryUpdateModel(model, null, null, new[] { "id" }); ... // rest } </code></pre> <p>The most important part of the test for method mentioned before is written just like that</p> <pre><code>Controller controller = new Controller(// list of mocks) FormCollection form = new FormCollection(); form.Add("name", "object1"); form.Add("parentobject.id", "1"); controller.ValueProvider = form.ToValueProvider(); controller.Create(form); </code></pre> <p>For now, it throws <code>ArgumentNullException</code>, even if I mock <code>ControllerContext</code> object. When I try to set <code>ValueProvider</code> property in controller:</p> <pre><code>controller.ValueProvider = form.ToValueProvider(); </code></pre> <p>then I get <code>MethodAccessException</code> and I'm told to add new assembly: <code>System.ComponentModel.DataAnnotations</code>.</p> <p>I have already read a few articles about testing MVC 3 Controller (there's not plenty of them), but their tips simply do not work, though code seems to be similar:</p> <p><a href="http://www.codecapers.com/post/ASPNET-MVC-Unit-Testing-UpdateModel-and-TryUpdateModel.aspx" rel="nofollow">http://www.codecapers.com/post/ASPNET-MVC-Unit-Testing-UpdateModel-and-TryUpdateModel.aspx</a> http://www.hanselman.com/blog/ASPNETMVCSessionAtMix08TDDAndMvcMockHelpers.aspx</p> <p>I would like to ask if someone has ever encountered this kind of problem and solved it.</p>
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    1. UScasperOne
    1. USRaf Szalansky
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      1. POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
      1. USTomasz Jaskuλa
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      1. POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
      1. USeniac
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    1. COon a separate note, why are you explicitly passing a model with a ref only to assign it again?
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      1. POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
      1. USAdam Tuliper - MSFT
    2. COyes, that's not nice. tbh, not everything was written by me.
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      1. POMVC 3 Controller Unit Testing - TryUpdateModel and a few kinds of exception
      1. USRaf Szalansky
 

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