FactoryGirl vs. Fabrication

fabrication_feature_pool_spec.rb

require 'spec_helper'

describe FeaturePool do
  it "creates a new instance given valid attributes" do
    Fabricate :feature_pool
  end

  it "is not valid without a name" do
    Fabricate.build(:feature_pool, :name => "").should_not be_valid
  end

  describe "#current" do
    it "returns the feature appearance whose position corresponds with #head" do
      pool = Fabricate :populated_feature_pool
      pool.current.featurable.user.name.should == "John Gruber"
    end

    it "has some feature appearances" do
      pool = Fabricate :populated_feature_pool
      pool.should have(5).feature_appearances
    end

    it "persists its appearances" do
      Fabricate :populated_feature_pool, :name => "foo/bar"

      pool = FeaturePool.find_by_name("foo/bar")
      pool.should have(5).feature_appearances
    end
  end
end

fabricators.rb

Fabricator(:feature_pool) do
  name "home/primary"
  accepts "NewsArticle"
  rotate_after 24
  head 1
  paused false
end

Fabricator(:populated_feature_pool, :from => :feature_pool) do
  feature_appearances!(:count => 5) do |feature_pool, position|
    Fabricate :feature_appearance, :feature_pool => feature_pool, :position => position
  end
end

Fabricator(:feature_appearance) do
  featurable! :fabricator => :news_article
  position 1
end

Fabricator(:news_article) do
  title "This Is the New Apple"
  body "Superior products _and_ mainstream prices."
  user!
end

Fabricator(:user) do
  name "John Gruber"
  email { sequence(:email) {|n| "user#{n}@example.com" } }
end

factories.rb

FactoryGirl.define do
  factory :feature_pool do
    name "home/primary"
    accepts "NewsArticle"
    rotate_after 24
    head 1
    paused false

    factory :populated_feature_pool do
      feature_appearances { FactoryGirl.build_list(:feature_appearance, 5) }
    end
  end

  factory :feature_appearance do
    association :featurable, :factory => :news_article
    position 1
  end

  factory :news_article do
    title "This Is the New Apple"
    body "Superior products _and_ mainstream prices."
    user
  end

  factory :user do
    name "John Gruber"
    sequence(:email) {|n| "user#{n}@example.com" }
  end
end

factory_girl_feature_pool_spec.rb

require 'spec_helper'

describe FeaturePool do
  it "creates a new instance given valid attributes" do
    FactoryGirl.create(:feature_pool)
  end

  it "is not valid without a name" do
    FactoryGirl.build(:feature_pool, :name => "").should_not be_valid
  end

  describe "#current" do
    it "returns the feature appearance whose position corresponds with #head" do
      pool = FactoryGirl.create(:populated_feature_pool)
      pool.current.featurable.user.name.should == "John Gruber"
    end

    it "has some feature appearances" do
      pool = FactoryGirl.create(:populated_feature_pool)
      pool.should have(5).feature_appearances
    end

    it "persists its appearances" do
      FactoryGirl.create(:populated_feature_pool, :name => "foo/bar")

      pool = FeaturePool.find_by_name("foo/bar")
      pool.should have(5).feature_appearances
    end
  end
end