Fabricas

Minimalist library for build objects as test data. Inspired by FactoryGirl

Introduction

Fabricas is simple; just a few lines of code. It's a framework agnostic library with zero requires and zero monkey-patching of any class or object. Very useful when you need to build objects fast.

Installation

Installing Fabricas is as simple as running:

$ gem install fabricas

Include Fabricas in your Gemfile with gem 'fabricas' or require it with require 'fabricas'.

Usage

class User
  attr_accessor :name, :email
end

Fabricas.define do
  factory :user do
    name "Julio"
    email "email@gmail.com"
  end
end

user = Fabricas.build :user
puts user.inspect
#=> <User @name= "Julio", @email= "email@gmail.com">

other_user = Fabricas.build :user, name: "Pedro"
puts other_user.inspect
#=> <User @name= "Pedro", @email= "email@gmail.com">

Defining a class name

You can provide your own class name to your factories using the class_name key:

Fabricas.define do
  factory :employee, class_name: "User" do
    name "Dilbert"
    area "Engineer"
  end
end

employee = Fabricas.build :employee
puts employee.inspect
#=> <User @name= "Dilbert", @area= "Engineer">

Sending blocks as attributes

Also you can use blocks in your factory to send whatever you want.

Fabricas.define do
  factory :user do
    # ...
    password { User.generate_password }
    city { Faker::Address.city }
  end
end

You can take advantage of them for sending other instances.

class Pet
  attr_accessor :name, :age
end

Fabricas.define do
  factory :user do
    # ...
    pet { Fabricas.build :pet }
  end

  factory :pet do
    name "Firulais"
    age 12
  end
end

user = Fabricas.build :user
puts user.pet.inspect
#=> <Pet @name= "Firulais", @age= 12>

Dependent Attributes

Attributes can be built using other attributes

Fabricas.define do
  factory :user do
    name "Julio"
    url "workingawesome.com"
    email { "#{name.downcase}@#{url}" }
  end
end

user = Fabricas.build :user
puts user.inspect
#=> <User @name= "Julio", @url="workingawesome.com", @email= "julio@workingawesome.com">

Inheritance

By using inheritance, your factory child can receive the same attributes and class name of its parent.

Fabricas.define do
  factory :user do
    first_name "Julio"
    email "email@gmail.com"

    factory :admin do
      access true
    end
  end
end

user = Fabricas.build :user
admin = Fabricas.build :admin

puts user.inspect
#=> <User @name= "Julio", @email= "email@gmail.com">

puts admin.inspect
#=> <User @name= "Julio", @email= "email@gmail.com", @access= true>

fabricas

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