How to enable page caching in a functional test in rails?

问题

Is it possible to turn on page caching for a functional test? The following didn't work:

class ArticlesControllerTest < ActionController::TestCase
 def setup
    ActionController::Base.public_class_method :page_cache_path
    ActionController::Base.perform_caching = true
 end
end

thanks in advance

Deb

回答1:

My current workaround is to enable perform_caching then reload the controller:

class ProjectsCachingTest < ActionController::IntegrationTest
  def setup
    # force the controller to be reloaded when caching is enabled
    ActionController::Base.perform_caching = true
    load "projects_controller.rb"
  end

  def teardown
    # undo the actions above
    ActionController::Base.perform_caching = false
    load "projects_controller.rb"
  end
end

In the latest version of Rails 2, the issue you are experiencing has to do with the class methods caches_action and caches_page. They both create an around filter to do the caching, but only when perform_caching is enabled.

So, modifying perform_caching at runtime does not recreate the expected around filters. The example above is one way to force your controller to be re-evaluated.

回答2:

I couldn't figure out why this was not working, so I ended up enabling caching directly on environments/test.rb:

config.action_controller.perform_caching             = true

来源：https://stackoverflow.com/questions/2765700/how-to-enable-page-caching-in-a-functional-test-in-rails