rspec users - Jul 2011 - RSpec, shoulda-matchers and Rails model attributes validations

I was trying out RSpec framework in a project and got stopped doing the unit
test of a model. In particular, doing the test for the associations and the
ActiveRecord validations.
I started writing the validations but my tests didn''t look DRY at all.
Before refactoring the tests checked out and look for other people
solutions.
I found out shoulda-matchers and Shoulda (which if I didn''t get it
wrong is
another testing framework). Actually I found another one, remarkable, but it
look it doesn''t work with Rails 3.

Does anyone have any advice, comments, suggestion on this matter?

Right now I continue on using RSpec and shoulda-matchers. The last one
mainly for testing the validations and associations of the models.
Any advice and/or help will be appreciated.

Thanks in advance.
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On Jul 28, 2011, at 10:22 AM, Piter Fcbk wrote:
> I was trying out RSpec framework in a project and got stopped doing the
unit test of a model. In particular, doing the test for the associations and the
ActiveRecord validations.
> I started writing the validations but my tests didn''t look DRY at
all. Before refactoring the tests checked out and look for other people
solutions.
> I found out shoulda-matchers and Shoulda (which if I didn''t get it
wrong is another testing framework). Actually I found another one, remarkable,
but it look it doesn''t work with Rails 3.
> 
> Does anyone have any advice, comments, suggestion on this matter?
> 
> Right now I continue on using RSpec and shoulda-matchers. The last one
mainly for testing the validations and associations of the models.
> Any advice and/or help will be appreciated.
> 
> Thanks in advance.
rspec + shoulda matchers is a fairly common pairing these days, so
you''re not alone.

Personally, I use them for validations (which are behavior), but not for
associations (which are structure). Rather than specifying, for example, that a
team has many players, I just use the players collection in an example that uses
them:

describe Team do
  it "does not have any open spots if there are 30 players" do
    team = Factory(:team)
    30.times { team.players << Factory(:player) }
    team.should_not have_opening
  end
end

HTH,
David
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I think that there is a lot of value to projects like shoulda-matchers
(which is separate from shoulda, the testing framework) and
remarkable. The idea is that you should not be testing the framework
(rails). That is, you should not be testing that defining a has_many
association creates a method on your model. You still need to test all
of your domain logic, which David''s example shows.

Also, remarkable does work in rails 3. I am using it because it has a
matcher for accepts_nested_attributes_for, while shoulda-matchers does
not. Using this line in my Gemfile works:   gem
''remarkable_activerecord'', ''~>
4.0.0.alpha2''

Sam

On Thu, Jul 28, 2011 at 11:22 AM, Piter Fcbk <piter.fcbk at gmail.com>
wrote:
> I was trying out RSpec framework in a project and got stopped doing the
unit
> test of a model. In particular, doing the test for the associations and the
> ActiveRecord validations.
> I started writing the validations but my tests didn''t look DRY at
all.
> Before refactoring the tests checked out and look for other people
> solutions.
> I found out shoulda-matchers and Shoulda (which if I didn''t get it
wrong is
> another testing framework). Actually I found another one, remarkable, but
it
> look it doesn''t work with Rails 3.
> Does anyone have any advice, comments, suggestion on this matter?
> Right now I continue on using RSpec and shoulda-matchers. The last one
> mainly for testing the validations and associations of the models.
> Any advice and/or help will be appreciated.
> Thanks in advance.
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> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
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