From: Brian Candler <B.Candler@...>
Date: 2007-05-26T03:04:19+09:00
Subject: Re: Mocking Net::HTTP

On Sat, May 26, 2007 at 01:45:06AM +0900, Enrique Comba Riepenhausen wrote:
> I am currently finishing up a release of Rannel, a library for  
> sending sms messages through the open source SMS/WAP Gateway Kannel.
> 
> I have a couple of Unit tests that assure that the commands are send  
> correctly to Kannel and all the tests are passing (i.e. it's  
> working :) ).
> 
> Looking at the unit test code though, I realized, that I am violating  
> one of the unit test premisses; The Independence of the Tests!
> 
> Therefore I thought that I could mock up the Net::HTTP requests done  
> to Kannel, but my problem here is that I am not quite sure how I can  
> do that, as the adapters (for GET and POST requests) actually use  
> this package (Net::HTTP).
> 
> What would you recommend? Should I write a MockGet/Post adapter that  
> will do the job? Or is there a transparent way to change the behavior  
> of Net::HTTP without touching the adapters?

I'm pretty sure Flexmock can do this.
http://onestepback.org/software/flexmock/

Scan down to "Mocking Class Objects". I've used it to mock calls to my own
classes (but not Net::HTTP)