testing-your-factories-first for Fabricator gem (http://robots.thoughtbot.com/post/30994874643/testing-your-factories-first)

fabricators_spec.rb

require 'spec_helper'

describe 'Fabricators' do
  Fabrication::Support.find_definitions if Fabrication.schematics.empty?

  Fabrication.schematics.schematics.keys.each do |fabrication|
    it "The #{fabrication} fabrication is valid" do
      f = Fabricate.build(fabrication)
      f.should be_valid if f.respond_to?(:valid?)
    end
  end
end