How can i have rspec test for my default scope

Question

my model has default_scope(:order => \'created_at\' ) my tests (rspec, factory girl, shoulda, etc.) are:

require \'spec/spec_helper.rb\'

describe CatMembers         


        

Answer 1

DRY It Up, Use Shared Examples

Most likely, you'll have more than one model with a similar default scope (if not, mostly ignore this method) so you can put this Rspec example into a shared_example where you can call it from a variety of model specs.

My preferred method of checking a default scope is to make sure the default ActiveRecord::Relation has the expected clause (order or where or whatever the case may be), like so:

spec/support/shared_examples/default_scope_examples.rb

shared_examples_for 'a default scope ordered by created_at' do

  it 'adds a clause to order by created_at' do
    described_class.scoped.order_clauses.should include("created_at")
  end

end

And then in your CatMembership spec (and any other spec that has the same default scope), all you need to is:

spec/models/cat_membership_spec.rb

describe CatMembership

  it_behaves_like 'a default scope ordered by created_at'

  # other spec examples #

end

Finally, you can see how this pattern can be extended to all sorts of default scopes and keeps things clean, organized and, best of all, DRY.