ActionController::Caching depends on RackDelegation and AbstractController::Callbacks

actionpack/lib/action_controller/caching.rb

@@ -55,6 +55,9 @@ def cache_configured?
       end
     end
 
+    include RackDelegation
+    include AbstractController::Callbacks
+
     include ConfigMethods
     include Pages, Actions, Fragments
     include Sweeping if defined?(ActiveRecord)

actionpack/test/metal/caching_test.rb

@@ -0,0 +1,32 @@
+require 'abstract_unit'
+
+CACHE_DIR = 'test_cache'
+# Don't change '/../temp/' cavalierly or you might hose something you don't want hosed
+FILE_STORE_PATH = File.join(File.dirname(__FILE__), '/../temp/', CACHE_DIR)
+
+class CachingController < ActionController::Metal
+  abstract!
+
+  include ActionController::Caching
+
+  self.page_cache_directory = FILE_STORE_PATH
+  self.cache_store = :file_store, FILE_STORE_PATH
+end
+
+class PageCachingTestController < CachingController
+  caches_page :ok
+
+  def ok
+    self.response_body = "ok"
+  end
+end
+
+class PageCachingTest < ActionController::TestCase
+  tests PageCachingTestController
+
+  def test_should_cache_get_with_ok_status
+    get :ok
+    assert_response :ok
+    assert File.exist?("#{FILE_STORE_PATH}/page_caching_test/ok.html"), "get with ok status should have been cached"
+  end
+end