added notes

test/unit/post_test.rb

@@ -39,6 +39,7 @@ class PostTest < ActiveSupport::TestCase
     should "be created on any save" do
       @user = Factory.create(:user)
       @post = Factory.create(:post)
+      @reverter = Factory.create(:user)
       assert_equal(1, @post.versions.size)
     
       @post.rating = "e"
@@ -49,7 +50,7 @@ class PostTest < ActiveSupport::TestCase
       assert_equal(@user.id, @post.versions.last.updater_id)
       assert_equal("125.0.0.0", @post.versions.last.updater_ip_addr)
       
-      @post.revert_to!(PostVersion.first)
+      @post.revert_to!(PostVersion.first, @reverter.id, "127.0.0.1")
       assert_equal("tag1 tag2", @post.tag_string)
       assert_equal("q", @post.rating)
     end