user stories for test unit

test_user_story.rb

module Test::Unit::UserStory
  class UserStoryTestCase < ActionController::IntegrationTest
    class << self
      attr_accessor :description

      alias :it :test

      def criteria(name, options = {}, &block)
        klass = create_class(name, self, &block)
        helper_klass = options[:js] ? CapybaraJavascriptTestHelper : CapybaraTestHelper
        klass.send(:include, helper_klass)
        klass
      end

      def background(&block)
        define_method(:setup, &block)
      end
    end
  end

  def story(name, description, options = {}, &block)
    klass = create_class(name, UserStoryTestCase, &block)
    klass.description = description
    klass
  end

  def create_class(name, superclass, &block)
    klass = Class.new(superclass, &block)
    name = name.gsub(/(^\d*|\W)/, ' ').lstrip
    klass_name = name.gsub(/(^[a-z]|\s+[a-zA-Z])/).each do |match|
      match.lstrip.upcase
    end

    Object.const_set klass_name, klass
  end
end