factory_boy_ruby

Allows you to create factories for the non-active record classes like the business logic layer ones, to be able to generate testing instances from these classes for easy and DRY test writing.

Installation

Add the following in the gemfile:

gem 'factory_boy_ruby'

and run bundle install

Or install it manually from the shell:

gem install factory_boy_ruby

Getting started

First you need to require it, preferred doing this in the spec_helper

# spec/spec_helper.rb
require 'factory_boy'

and make a folder to put your factory code in eg. spec/factory_boy/factories, if you're using factory_girl load these factories after factory_girl factories to be able to use them. you can add these lines in the spec_helper to be able to load them

# spec/spec_helper.rb
Dir['./spec/factory_boy/factories/**/*.rb'].each { |f| require f }

or loading it in the factory_girl initializer would work as well

# initializer/factory_girl.rb
FactoryGirl.definition_file_paths.push(Pathname.new (File.join(Rails.root, 'spec/factory_boy')))

Sample

Sample factory for class VehilcesRetriever

class VehilcesRetriever
  def initialize(provider_company, country, city, vehicle_type) ;
end

# factory_boy/factories/vehicles_retriever.rb
FactoryBoy.define do
  factory :vehicles_retriever, class: VehilcesRetriever do
    factory_girl :provider_company, factory: :company, create: true
    factory_girl :country
    vehicle_type { VehicleTypes.all.sample }

    before(:build) do
      FactoryGirl.create(:vehicle, provider_company: self.provider_company ,country: self.country, vehicle_type: self.vehicle_type)
    end
  end
end

To generate an instance from this factory:

FactoryBoy.build(:vehicles_retriever)