enable resque jobs in integration tests

resque_helper.rb

module ResqueHelper
  def with_resque
    Resque.module_eval do
      def self.enqueue(task, *args)
        task.perform(*args)
      end
    end
    yield
    Resque.module_eval do
      def self.enqueue(task, *args)
      end
    end
  end
end

RSpec.configure do |config|
  config.include ResqueHelper
end