Factory Girl Build and Create

factories.rb

# factory_girl: 3.3.0, ruby 1.9.3-p194

FactoryGirl.define do

  sequence(:item_name) { %w( Milk Tea Coffee Danish Sugar Bagel Donut Toast ).sample(1) }

  factory :user do |user|
    name  'Christian'
    email 'christian@example.com'

    factory :user_with_profile do
      # I would expect this to work, but it doesn't produce a profile in the build case.
      #profile 

      # This works however
      association :profile, factory: :profile, strategy: :build
    end
  end

  factory :profile do
    description 'All arms and legs.'
    born_on     { Date.new(1974, 5, 18) }
    gender      'male'
  end

  factory :list do
    name 'Groceries'

    factory :list_with_items do
      ignore do
        item_count 5
      end

      after(:build) do |list, evaluator|
        FactoryGirl.build_list(:item, evaluator.item_count, list: list)
      end
    end
  end

  factory :item do
    name { FactoryGirl.generate(:item_name) }
    done false
  end
end

item.rb

class Item < ActiveRecord::Base
  belongs_to :list, inverse_of: :items

  attr_accessible :name, :done
end

list.rb

class List < ActiveRecord::Base
  attr_accessible :name

  has_many :items, inverse_of: :list, dependent: :destroy
end

list_spec.rb

require 'spec_helper'

# List has_many Items
describe List do
  describe "factories" do
    describe "create" do
      it "should create a valid list without any items" do
        list = create(:list)
        list.should be_valid
        list.should_not be_new_record
        list.items.should be_empty
      end

      it "should create a list with persisted items" do
        list = create(:list_with_items)
        list.items.should_not be_empty # FAIL: expected empty? to return false, got true
        list.items.each do |item|
          item.should_not be_new_record
        end
      end
    end

    describe "build" do
      it "should build a list with unpersisted items" do
        list = build(:list_with_items)
        list.should be_new_record
        list.items.should_not be_empty # FAIL: expected empty? to return false, got true
        list.items.each do |item|
          item.should be_new_record
        end
      end
    end
  end
end

user_spec.rb

require 'spec_helper'

describe User do
  describe "factories" do
    describe "create" do
      it "should create a valid user" do
        user = create(:user)
        user.should be_valid
      end

      it "should create a valid user with a persisted profile" do
        user = create(:user_with_profile)
        user.should_not be_new_record
        user.profile.should be_present
        user.profile.should_not be_new_record
        user.profile.user.should == user
      end
    end

    describe "build" do
      it "should build a valid user" do
        user = build(:user)
        user.should be_valid
      end

      it "should build a valid user with an unpersisted profile" do
        user = build(:user_with_profile)
        user.should be_new_record
        user.profile.should be_present
        user.profile.should be_new_record # FAIL: expected nil to be a new record
        user.profile.user.should == user
      end
    end
  end
end