On Tue, 16 Oct 2007 10:39:32 +0200, Wincent Colaiuta wrote:
> Yes, I spec this kind of thing.
>
> describe User, 'accessible attributes' do
> it 'should allow mass-assignment to the login name' do
> lambda { new_user.update_attributes(:login_name =>
> String.random) }.should_not raise_error
> end
> # many other examples here, one for each accessible attribute
> that I care about
> end
>
> describe User, 'protected attributes' do
> it 'should deny mass-assignment to the passphrase hash' do
> lambda { new_user.update_attributes(:passphrase_hash =>
> String.random) }.should raise_error
> end
> # many other examples here, one for each protected attribute
> that I care about
> end
>
> I do it this way because:
>
> 1. I am most interested in the *behaviour*; does this let me mass-
> assign to this attribute (or not)?
>
> 2. I don't want my specs to depend on internal knowledge of the Rails
> attribute protection/access implementation.
>
> The style of spec shown above seems the best way to me of both
> documenting the desired behaviour and confirming that it exists; I
> don't view these as tests of Rails' internals, but as tests that I've
> used attr_accessible and attr_protected correctly. I tried other ways
> in the past, but this is the one I like best.
>
> Another thing to note that helps the readability of the specs: the
> new_user and String.random methods are provided by FixtureReplacement
> (<http://replacefixtures.rubyforge.org/>). Note that by default
> FixtureReplacement used mass-assignment under the covers, so it can't
> be used with protected attributes, but I've sent a patch in to the
> maintainer which changes that:
I'm all for avoiding rails internal behavior, but attr_accessible deals on a
share least model. If you can verify that only
attrs x, y, z are accessible, you know that any other field
that rails can come up with, or you add later is covered.
I just saw FixtureReplacement the other day, and plan on giving it a go.
Looks like it does a bunch of what I already do manually.
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