Beginning to Mock with Rhino Mocks and MbUnit

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Beginning to Mock with Rhino Mocks and MbUnit - Part 1

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by Ben Hall
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Summary

Hopefully, this has been a useful insight into the world of mock objects and in particular Rhino Mocks. We have covered what a mock object is, the supporting tools, an example of using Rhino Mocks to replace the code which depends on the system time at runtime and covered the limitations of mocks.

In the next article in the series I plan to discuss the alternatives to mock objects and how to use mock objects to replace your data access layer.

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User Comments

Title: "Program against interfaces"
Name: Rogério Liesenfeld
Date: 2009-10-06 5:01:32 PM
Comment:
What exactly is meant here by "program against interfaces, one of the core OO design rules"?

Creating an IDateTime interface with a single DateTimeController implementation class is absolutely NOT what was intended by the GoF book (Design Patterns) when they said "program to interface, not an implementation".

That "core OO design rule" is about something else: polymorphism; and it's really only applicable in the context of reusable OO software, specifically for dependencies between subsystems. Not at all the case for the example in this article.

Title: Question
Name: bangi
Date: 2009-05-06 9:37:40 AM
Comment:
Is it possible to mock an object to is called by the method that I am calling. Eg. 1SomeInterface has a method called GetUsers. GetUsers calls a method called findusers which belongs to a Interface IDataAccess. Is it correct to make a mock object for IDataAccess in my Test class hoping that when I call ISomeInterface when ISomeInterface gets to the IDataAccess.findusers() the mock version will be user instead of the real method.

Title: Thanks
Name: dotnetguts
Date: 2008-10-27 2:23:56 PM
Comment:
Thanks, Good Information.

DotNetGuts
http://dotnetguts.blogspot.com

Title: Excellent
Name: Iran
Date: 2008-09-13 7:17:49 AM
Comment:
Thanks a lot Ben for providing a simple start up guide for Rhino mocks

Title: Stubs v Mocks
Name: Ben Hall
Date: 2008-05-27 6:49:28 AM
Comment:
\

Title: I recomended this book
Name: Carlos
Date: 2008-05-27 6:04:34 AM
Comment:
This post is very well, but are confused concepts(STUBS-MOCKS)
I recommend reading this book is really good.

http://www.manning.com/osherove/

Title: Diference Stubs and Mocks
Name: Carlos
Date: 2008-05-27 4:28:18 AM
Comment:
I think these confusing terms between STUBS and MOCKS.
You've created a mock, for help to test the class, this is a stub not a mock. I recommend you read this article.

http://martinfowler.com/articles/mocksArentStubs.html

Title: Great Tutorial
Name: Steve Smith
Date: 2008-03-22 12:55:29 PM
Comment:
It didn't click for me until I read this - been trying to learn Rhino Mocks off and on for the last week. Nice job!

Title: Thanks for sharing
Name: Jeena
Date: 2008-01-25 9:32:33 AM
Comment:
Very good article. Thanks a lot

Title: Good introduction to Rhino Mocks
Name: Tod Birdsall
Date: 2007-12-27 5:55:43 PM
Comment:
Thanks for the nice introduction. It was very clear and easy to follow.

Title: .
Name: Pawel Tarnik
Date: 2007-10-10 8:39:38 AM
Comment:
Nice article, I look forward to reading the next part.
Thanks.

Title: Beginning to Mock with Rhino Mocks and MbUnit - Part 1
Name: Lee
Date: 2007-10-09 7:46:47 PM
Comment:
Thanks for the article - it's clear and easy to follow.

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