Rely on host app having enabled perform_caching

Trying to use caching selectively is a fool's errand. The caching
metabrogramming breaks all hope of reloading correctly.

Author: avit

lib/rspec-rails-caching.rb

@@ -4,45 +4,28 @@
 require 'rspec-rails-caching/extensions/action_controller'
 
 module RSpecRailsCaching
-  RSpec::Rails::ControllerExampleGroup.class_eval do
-    include Matchers
-  end
 
   RSpec.configure do |config|
-    config.before(:all, :type => :controller, :caching => true) do |example|
+    if ActionController::Base.perform_caching
       silence_warnings do
-        @_orig_cache_store = RAILS_CACHE
-        Object.const_set "RAILS_CACHE", TestStore.new
+        Object.const_set :RAILS_CACHE, TestStore.new(true)
       end
-
       ActionController::Base.cache_store = RAILS_CACHE
-      ActionController::Base.perform_caching = true
+      ActionController::Base.class_eval do
+        extend Extensions::ActionController::ClassMethods
+      end
 
-      # The controller needs to be reloaded to metaprogram the caches_page
-      # callback with the perform_caching option turned on. There is no
-      # reloading if the example controller isn't in the load paths, likely
-      # because it was defined inline in the spec or an AnonymousController.
-      if ctrl_class_file =
-        ActiveSupport::Dependencies.search_for_file(example.class.controller_class.to_s.underscore)
-        then
-        # FIXME: the controller's cache_page callbacks don't get triggered
-        # when the test suite runs an outer example group (without caching:
-        # true), but individual examples will pass.
-        ActiveSupport::Dependencies.load(ctrl_class_file)
+      RSpec::Rails::ControllerExampleGroup.class_eval do
+        include Matchers
       end
 
-      example.class.controller_class.class_eval do
-        self.perform_caching = true
-        extend Extensions::ActionController::ClassMethods
+      config.before :each do |example|
+        RAILS_CACHE.reset
       end
-    end
 
-    config.after(:all, :type => :controller, :caching => true) do |example|
-      silence_warnings do
-        Object.const_set "RAILS_CACHE", @_orig_cache_store
+      config.after :each do |example|
+        RAILS_CACHE.reset
       end
-      ActionController::Base.cache_store = RAILS_CACHE
-      ActionController::Base.perform_caching = false
     end
   end
 

lib/rspec-rails-caching/test_store.rb

@@ -64,7 +64,7 @@ def page_expired?(options = {})
     private
     def test_cache_url(options)
       return options if options.is_a?(String)
-      url_for(options.merge({ :only_path => true, :skip_relative_url_root => true }))
+      url_for(options.merge(:only_path => true, :skip_relative_url_root => true))
     end
   end
 end

rspec-rails-caching.gemspec

@@ -12,6 +12,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "rails", ">=3.0.0"
   gem.add_dependency "rspec", ">=2.8.0"
+  gem.add_dependency "rspec-rails", ">=2.10.0"
 
   gem.files         = `git ls-files`.split($\)
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})