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From Andy <>
Subject RE: unit testing Struts2 application (with Spring and Hibernate)
Date Fri, 17 Jul 2009 15:57:40 GMT

Couldn't agree more.

> From:
> To:
> Subject: Re: unit testing Struts2 application (with Spring and Hibernate)
> Date: Thu, 16 Jul 2009 21:59:35 -0400
> On Thursday 16 July 2009 07:14:30 pm Dave Newton wrote:
> >
> > IMO that's outside the purview of unit testing, though--by definition
> > this describes integration testing: the testing of an action along with
> > the framework.
> >
> > There's nothing *wrong* with doing that testing, I just don't think it's
> > the same thing as unit testing: independently testing the smallest bits
> > of functionality.
> >
> > JUnit can be used for that kind of testing too (and I do, sometimes),
> > but once I'm at that point I generally figure I might as well just be
> > doing client-focused testing and testing the output of my results. I
> > also use Selenium, although I may switch back to using a layer I wrote
> > on top of Watir.
> >
> > Dave
> >
> Not to throw weight around, but it is sort of curious to me that the three 
> struts committers who chimed in all agreed that tip-to-tail integration 
> testing in JUnit is not worth the effort. I only bring it up because, IMO, 
> struts 2 is one of the best-unit-tested products I've ever worked on. I think 
> Dave, Musachy and myself are biased against tip-to-tail in JUnit because in 
> Struts 2, we have a guideline to unit test all bugfixes and new functionality. 
> That being so, all three of us have probably come across situations where 
> writing the unit test is 500x harder than writing the fix :)
> Dave does a good job of making the point I tried to make earlier, tip-to-tail 
> testing is better looked at as an integration test and it becomes much easier 
> to deal with as an integration test. If you are unfamiliar with selenium, it 
> is worth learning. One of the posters earlier mentioned that he didn't want to 
> learn another testing framework when he already knows JUnit. Selenium is nice 
> because it runs right in the browser (IE and Firefox) and runs though a set of 
> VB-like instructions... Things like - open this url, look for this text, click 
> this link and then make sure this text exists. IMO, if you want to make sure 
> that your action renders the appropriate result, this is way better than 
> trying to coax the framework by bootstrapping it with mocks then figuring out a 
> way to retrieve the rendered result. As an added bonus, it is possible to get 
> maven to launch selenium tests, so you can get full unit and integration 
> testing out of your CI if you are willing to put forth the effort.
> To drive the point home further, I would add that the Dojo plugin probably 
> would have been more stable if we had taken the selenium approach (that is 
> being employed with the slowly moving jquery plugin). 
> -Wes
> -- 
> Wes Wannemacher
> Author - Struts 2 In Practice 
> Includes coverage of Struts 2.1, Spring, JPA, JQuery, Sitemesh and more
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