console_commands.sh

script/generate delayed_job && rake db:migrate
script/delayed_job start

cron.rake

namespace :cron do
  task :start => :environment do
    TestCronTask.cron_it!
  end
end

environment.rb

...
Rails::Initializer.run do |config|
  ...
  config.gem 'delayed_job'
  ...
end

test_cron.rb

class TestCronTask < ActiveRecord::Base
  class << self
    def cron_it!
      Delayed::Job.enqueue(TestCron.new, 0, 1.minutes.from_now)
    end

    def create_point!
      create!
      cron_it!
    end
  end
end

test_cron_task.rb

class TestCronTask < ActiveRecord::Base
  class << self
    def cron_it!
      Delayed::Job.enqueue(TestCron.new, 0, 1.minutes.from_now)
    end

    def create_point!
      create!
      cron_it!
    end
  end
end