Hold off drawing routes until all the possible controller classes have been loaded.

Methods
B
Attributes
[RW] drew
Instance Public methods
before_setup()

Source: show | on GitHub 

# File actionview/test/abstract_unit.rb, line 92
def before_setup
  super
  return if DrawOnce.drew

  ActiveSupport::Deprecation.silence do
    SharedTestRoutes.draw do
      get ':controller(/:action)'
    end

    ActionDispatch::IntegrationTest.app.routes.draw do
      get ':controller(/:action)'
    end
  end

  DrawOnce.drew = true
end