[TIP] Mock objects in testing object composition?
Julius Lucks
lucks at FAS.HARVARD.EDU
Tue Apr 24 13:52:31 PDT 2007
Many thanks Benji and Paul.
Looks like simpler is better. So when are mock objects useful?
Julius
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http://openwetware.org/wiki/User:Lucks
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On Apr 24, 2007, at 4:45 PM, Benji York wrote:
> Julius Lucks wrote:
>> I would like to separate Grid tests from dependance on Tile so
>> that later on down the road when I change the Tile class and break
>> it, then my Grid tests don't start to fail for this reason. Is
>> this not a good way of thinking?
>
> It sounds ideal, but like so many ideals its cost is likely greater
> than the benefit.
>
> I wouldn't worry about it. One day your Tile and Grid tests start
> failing, you look at one or the other and realize pretty quickly
> that Tile is at fault, you fix Tile and Grid is happy too. Not to
> mention that you making changes to Tile is what caused the tests to
> start failing, so you'll have a pretty good idea what happened.
> --
> Benji York
> http://benjiyork.com
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