add tests to aliased _filter callbacks

actionpack/test/abstract/callbacks_test.rb

@@ -265,5 +265,51 @@ class TestCallbacksWithArgs < ActiveSupport::TestCase
         assert_equal "Hello world Howdy!", controller.response_body
       end
     end
+
+    class AliasedCallbacks < ControllerWithCallbacks
+      before_filter :first
+      after_filter :second
+      around_filter :aroundz
+
+      def first
+        @text = "Hello world"
+      end
+
+      def second
+        @second = "Goodbye"
+      end
+
+      def aroundz
+        @aroundz = "FIRST"
+        yield
+        @aroundz << "SECOND"
+      end
+
+      def index
+        @text ||= nil
+        self.response_body = @text.to_s
+      end
+    end
+
+    class TestAliasedCallbacks < ActiveSupport::TestCase
+      def setup
+        @controller = AliasedCallbacks.new
+      end
+
+      test "before_filter works" do
+        @controller.process(:index)
+        assert_equal "Hello world", @controller.response_body
+      end
+
+      test "after_filter works" do
+        @controller.process(:index)
+        assert_equal "Goodbye", @controller.instance_variable_get("@second")
+      end
+
+      test "around_filter works" do
+        @controller.process(:index)
+        assert_equal "FIRSTSECOND", @controller.instance_variable_get("@aroundz")
+      end
+    end
   end
 end