Comments on: Using Mock Objects When Testing LINQ Code

By: Crazy Eight Speakz Up » Blog Archive » IOrderedQueryable and Unit testing.

Sun, 07 Dec 2008 15:37:55 +0000

[...] I opened my browser, went to google and found an article about IOrderedQueryable and Unit testing. Well, the misfortune here is that the interface has changed and the article probably was written [...]

By: Праздник Игоря » Linq to SQL и DDD

Праздник Игоря » Linq to SQL и DDD — Wed, 04 Jun 2008 15:18:25 +0000

[...] с помощью Mock objects) Здорово, что проблема уже решена: Using Mock Objects When Testing LINQ Code – вполне рабочее решение, но мне ближе другая [...]

By: Andrew Matthews

Andrew Matthews — Thu, 21 Feb 2008 01:53:15 +0000

Jeremy – good luck. The investment will be worth it.

By: Jeremy Holt

Jeremy Holt — Wed, 20 Feb 2008 15:41:12 +0000

Hi Andrew

Thanks for your kind words. I’m off to Amazon.com right now.

Best regards
Jeremy

By: Andrew Matthews

Andrew Matthews — Wed, 20 Feb 2008 02:25:07 +0000

Hi Jeremy,

Don’t be too discouraged – this is the product of a lot of digging around in the undergrowth of LINQ and C# 3.0!

There are really several types of mock objects that you have at your disposal – Mocks, and Stubs are the two main types. the emphasis of unit testing is just that – to test the unit. If you test a (e.g.) business logic component, then you’ll end up testing it, plus any data access code you write, plus any SQL stored procs etc in the process. Using a mock object allows you to control the environment around the component you’re testing.

The wikipedia article seems like a good jumping off point. I also found the book extreme programming tools for Java quite helpful.

http://en.wikipedia.org/wiki/Unit_testing

HTH, and good luck.

Andrew

By: Jeremy Holt

Jeremy Holt — Tue, 19 Feb 2008 20:26:59 +0000

I am really new to this, and to my shame seem to be able to understand only a very little of “extracting interfaces” and creating “Mock contexts”. I always thought I was a moderately capable coder, and recently decided to switch from VB to C#. On making the change, I also decided to do things “properly” – particularly the question of unit testing. I’ve got the gist of the principles of unit testing, but can’t get my head around Mocking.
I have also realized that I am nothing more than a “hobby programmer” – a bit sad after doing this “part time” for so many years. I’m working my way though “Code Complete” but in the meantime would really appreciate it if you could point me in the direction of a good book, articles etc that will throw light on this for me? My particular interest is Linq for SQL.
Many thanks in advance

By: Chaks

Chaks — Thu, 03 Jan 2008 09:55:11 +0000

I found even more effective unit testing with linq-to-sql here at Ian Cooper’s post – http://iancooper.spaces.live.com/blog/cns!844BD2811F9ABE9C!397.entry?wa=wsignin1.0

By: Chaks

Chaks — Thu, 03 Jan 2008 06:38:45 +0000

did u try the same with Visual Studio 2008? I am not able to do the same, as its implementing IQueryProvider and the CreateQuery too has two arguments – IQueryProvider and an Expression.

Can you please give a link to your source code too? It would be really, really helpful for me

Thanks

By: Mitch Denny

Mitch Denny — Tue, 26 Jun 2007 08:48:04 +0000

LOL. Love the name – “Mockeries”!