Methods to aid in testing without loading the Rails environment

gistfile1.rb

def stub_model(model_name)
  stub_class model_name, ActiveRecord::Base
end

def stub_class(class_name, super_class = Object)
  stub_module class_name, Class.new(super_class)
end

def stub_module(module_name, object = Module.new)
  module_name = module_name.to_s.camelize
  Object.const_get module_name
rescue NameError
  Object.const_set module_name, object
end

def require_model(file_name, options = {})
  require "./app/models/#{file_name}"

  if options[:factory] and not FactoryGirl.factories.registered?(file_name)
    require "factories/#{file_name}_factory"
  end
end