thoughtbot--factory_bot/lib/factory_girl/syntax/sham.rb

module FactoryGirl
  module Syntax

    # Adds a Sham module, which provides an alternate interface to
    # FactoryGirl::Sequence.
    #
    # Usage:
    #
    #   require 'factory_girl/syntax/sham'
    #
    #   Sham.email {|n| "somebody#{n}@example.com" }
    #
    #   FactoryGirl.define do
    #     factory :user do
    #       email
    #     end
    #   end
    #
    # Note that you can also use Faker, but it is recommended that you simply
    # use a sequence as in the above example, as factory_girl does not provide
    # protection against duplication in randomized sequences, and a randomized
    # value does not provide any tangible benefits over an ascending sequence.
    #
    # This syntax was derived from Pete Yandell's machinist.
    module Sham
      module Sham #:nodoc:
        def self.method_missing(name, *args, &block)
          if block_given?
            start_value = args.first
            FactoryGirl.sequences[name] = Sequence.new(start_value || 1, &block)
          else
            FactoryGirl.sequences[name].next
          end
        end

        # overrides name on Module
        def self.name(&block)
          method_missing('name', &block)
        end
      end
    end
  end
end

include FactoryGirl::Syntax::Sham