Advanced Rails - Building Industrial-Strength Web Apps in Record Time

92 | Chapter 3: Rails Plugins

TheClass.new do ... end.newsyntax creates an instance of an anonymous class

with the provided class definition. A more verbose, named, equivalent would be:

class MyTestController

# class definition...

end

@controller = MyTestController.new

• Sometimes, dependencies are complicated enough so as to require actually load-
  ing a full framework. This is the case with the SSL Requirement plugin, which
  actually loadsActionControllerand sets up a controller for testing purposes.
  First, the code loadsActionController(this either requiresRUBYOPT="rubygems"and
  a suitable gem version ofActionController, or setting theACTIONCONTROLLER_PATH
  environment variable to a copy of theActionController source):
  begin
  require 'action_controller'
  rescue LoadError
  if ENV['ACTIONCONTROLLER_PATH'].nil?
  abort <<MSG
  Please set the ACTIONCONTROLLER_PATH environment variable to the directory
  containing the action_controller.rb file.
  MSG
  else
  $LOAD_PATH.unshift << ENV['ACTIONCONTROLLER_PATH']
  begin
  require 'action_controller'
  rescue LoadError
  abort "ActionController could not be found."
  end
  end
  end
  Then, the test code loadsActionController’stest_process, which affords access
  toActionController::TestRequest and ActionController::TestResponse. After
  that, logging is silenced and routes are reloaded:
  require 'action_controller/testprocess'
  require 'test/unit'
  require "#{File.dirname( FILE _)}/../lib/ssl_requirement"

ActionController::Base.logger = nil

ActionController::Routing::Routes.reload rescue nil

Finally come the test controller and test case—these follow much the same for-

mat as Rails functional tests, as we have done all of the setup manually.

class SslRequirementController < ActionController::Base

include SslRequirement

ssl_required :a, :b

ssl_allowed :c

# action definitions...

end