thoughtbot--factory_bot/spec/acceptance/transient_attributes_spec.rb

require "spec_helper"

describe "transient attributes" do
  before do
    define_model("User", :name => :string, :email => :string)

    FactoryGirl.define do
      sequence(:name) {|n| "John #{n}" }

      factory :user do
        four  { 2 + 2 }.ignore
        rockstar(true).ignore
        upcased(false).ignore

        name  { "#{FactoryGirl.generate(:name)}#{" - Rockstar" if rockstar}" }
        email { "#{name.downcase}#{four}@example.com" }

        after_create do |user, proxy|
          user.name.upcase! if proxy.upcased
        end
      end
    end
  end

  context "returning attributes for a factory" do
    subject { FactoryGirl.attributes_for(:user, :rockstar => true) }
    it { should_not have_key(:four) }
    it { should_not have_key(:rockstar) }
    it { should_not have_key(:upcased) }
    it { should     have_key(:name) }
    it { should     have_key(:email) }
  end

  context "with a transient variable assigned" do
    let(:rockstar)           { FactoryGirl.create(:user, :rockstar => true, :four => "1234") }
    let(:rockstar_with_name) { FactoryGirl.create(:user, :name => "Jane Doe", :rockstar => true) }
    let(:upcased_rockstar)   { FactoryGirl.create(:user, :rockstar => true, :upcased => true) }
    let(:groupie)            { FactoryGirl.create(:user, :rockstar => false) }

    it "generates the correct attributes on a rockstar" do
      rockstar.name.should  == "John 1 - Rockstar"
      rockstar.email.should == "john 1 - rockstar1234@example.com"
    end

    it "generates the correct attributes on an upcased rockstar" do
      upcased_rockstar.name.should  == "JOHN 1 - ROCKSTAR"
      upcased_rockstar.email.should == "john 1 - rockstar4@example.com"
    end

    it "generates the correct attributes on a groupie" do
      groupie.name.should  == "John 1"
      groupie.email.should == "john 14@example.com"
    end

    it "generates the correct attributes on a rockstar with a name" do
      rockstar_with_name.name.should  == "Jane Doe"
      rockstar_with_name.email.should == "jane doe4@example.com"
    end
  end

  context "without transient variables assigned" do
    let(:rockstar) { FactoryGirl.create(:user) }

    it "uses the default value of the attribute" do
      rockstar.name.should == "John 1 - Rockstar"
    end
  end
end