Unit testing

Unit Testing ASP.NET MVC Controller Action contains specific ActionFilter Attributes

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ActionFilters in ASP.NET MVC are great. You can now easily share logic between controllers without having to inherit from a base controller, that does the common work. I have a content heavy application that supports a set of layouts. Each layout is rendered by setting the Layout view dynamically, which I do from an ActionFilter. My ActionFilter is fully tested, but when you delegate work to an ActionFilter, you should write a test that ensures the filter is defined on the action. Not surprisingly, this is very simple and relies on reflection (Download from Gist: https://gist.github.com/2605628): /// <summary> /// Verifies the controller action, contains an attribute of the specified attributeType. /// </summary> /// <param name=”controller”>The controller.</param> /// <param name=”action”>The action method.</param> /// <param name=”attributeType”>Type of the attribute to look for.</param> /// <returns>Returns true if the attribute was present on the action. Otherwise … Continued

Unit test for verifying references from DataAnnotation validation to the ErrorMessageResourceName value

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I love the new model validation features in System.ComponentModel.DataAnnotations. One thing I don’t like though, is that the ErrorMessageResourceName is loosely typed. The ErrorMessageResourceType, however, is a System.Type which will be strongly typed by assigning its value using the typeof(Namespace.ResourceSetType) method. Since there’s no build-breaking reference between a resource file and the value of the ErrorMessageResourceName on all classes where you use it, I thought it would be cool to have a unit test that verifies the existence of all referenced resource keys. Remember to add a reference to System.ComponentModel.DataAnnotations. Code /// <summary> /// Verifies that all properties that are decorated with validation data-annotations, refers to /// an existing resource. This will make sure, that missing resources are not referenced. /// </summary> [TestMethod] public void All_Properties_With_Validation_Annotations_Must_Refer_To_Existing_Resource() { Assembly assembly = Assembly.Load(new AssemblyName(“MyApp.Model.Namespace”)); var types = assembly.GetTypes().Where<Type>(t => t.IsClass && !t.IsAbstract); … Continued