Convert a single FactoryGirl factory file into a directory of factories.

extract_factories.rb

#!/usr/bin/env ruby
require 'fileutils'

# Set Source and Destination
source = ARGV[0] || "#{Dir.pwd}/spec/factories.rb"
destination = ARGV[1] || "#{Dir.pwd}/spec/factories/"

# Verify Source and Destination Exist
puts '! Source file does not exist.' unless File.exists?(source)
FileUtils.mkpath destination unless File.directory?(destination)

# Parse Factories
data = File.read(source)
matches = data.scan(/(([\t ]*)factory :(\w+).*?\n\2end)/m)

# Create Factory Files
puts "\n"
puts '-' * 40
puts 'Creating Factories'
puts '-' * 40

count = 0
matches.each do |match|
  factory = match[0]
  file = [destination,match[2],'_factory.rb'].join
  next if File.exists?(file)
  puts file
  count += 1 if File.open(file, 'w+'){ |f| f.write("FactoryGirl.define do\n#{factory}\nend") }
end

puts '-' * 40
puts "#{count} factor#{count == 1 ? 'y' : 'ies'} created.\n\n"

# Delete Source Factory File
puts 'Delete source file? [y/n]'
File.delete(source) if gets =~ /y(es)?/i

This gist currently depends on the factory file being properly indented, as it matches a factory statement and it's associated end based on their indentation. I would, however, like to expand the parser to match the appropriate end regardless of its indentation.