Recently we’ve been looking at improving our unit test code coverage and reducing the amount of duplicated code around our bespoke data access layer. Where possible we have moved over to NHibernate but certain parts of the data access must still be written using the standard ADO.NET connection/command pattern. Typically hidden right in the middle…
Whilst working with VS2010 projects it can be really frustrating if you accidentally create your unit testing projects as class libraries (or migrate an existing class library into a unit testing library mainly because the context-sensitive “Add New” menu no longer contains the “New Test” option. This can be easily fixed by directly amending the…
By default objects mocked using MOQ will handle calls to method/properties that have not been defined, which 99% of the time will be the desired behaviour. Occasionally however a situation will require that MOQ throws an exception when accessing an undefined method or property. The MOQ framework provides this functionality via the MockBehavior enum but…
I recently asked this question on Stack Overflow. I was using reflection and MethodInfo to confirm that a controller contained an action with the required method parameters. If one was found, this would then allow my code to unit test that the correct Action Filter Attributes were being assigned to the controller action (so a…
It is a shame that when the ASP.NET MVC framework was released they did not think to build IoC support into the infrastructure. All the major components of the MVC engine appear to magically inherit instances of HttpContext and it’s related objects – which can cause no end of problems if you are trying to…
To fully test an MVC web site it is important to test (in isolation) the following: The behaviour of controller actions The behaviour of any custom action filters. The decoration of action filter attributes on controller actions. To test the 3rd point, you must use reflection to select the desired action from the controller. The…
Update – 14th February 2016:Looking in my blog stats, this continues to be one of my most popular articles, so it is most definitely worth an update. As of v4.2.0 Automapper has been updated to remove the static implementation. I’ve not had chance to play with the new version yet but I would imagine this…
When unit testing ASP.NET MVC2 projects the issue of injecting HttpContext is quickly encountered. There seem to be many different ways/recommendations for mocking HttpContextBase to improve the testability of controllers and their actions. My investigations into that will probably be a separate blog post in the near future but for now, I want to cover…
Today I read Roy Osherove’s blog post “Two Different ways to create bad logic in unit tests“. It’s an interesting article that covers logic included in many unit tests, is it acceptable to compare a returned string value using a comparison value built via string concatenation? It is perfectly possible that an issue introduced by…