[Ruby] Testing Models in Rails

[Aaron Patterson]

On Thu, Jul 26, 2007 at 01:33:31PM -0700, Laurel Fan wrote:
> On 7/26/07, Aaron Patterson <aaron at tenderlovemaking.com> wrote:
> > This seems like it should be easy, but I can't figure it out!  I have a
> > model that defines a before_update callback, and I want to assert that
> > that callback is set.  But I don't want to save the object because I'm
> > trying to avoid hitting the database.
> 
> Why are you trying to avoid hitting the database?  I would imagine
> that avoiding the database makes it hard to test much of anything.

Because hitting the database is expensive.  Actually I've found that
I can test most of my code without hitting the database.  It makes my
tests much faster.  The problem here is that I don't know how to assert
that my callback is defined *without* hitting the database.

I trust that the active record callback chain works properly when I call
save.  I just want to make sure that my callback is in that chain.

-- 
Aaron Patterson
http://tenderlovemaking.com/