steve9001

module MyApp
  class Application < Rails::Application
    if Rails.env == 'test'
      require 'diagnostic'
      config.middleware.use(MyApp::DiagnosticMiddleware)
    end
  end
end

steve9001

class Array
  def promote_element(e)
    i = self.index(e)
    return self if i == 0 or i == nil
    result = self.slice(0, i-1)
    result << e
    result << self[i-1]
    result.concat(self.slice(i+1, self.length))
  end