Rails - Nov 2005 - rfc822 method missing from Time objects during functional tests?

I am developing a set of functional tests for an app I''ve created,
which includes testing an RSS feed. This feed loops through a set of
posts and, besides other things, writes out the published date of the
post in RFC822 format. This is all contained in a nice XML builder
file:

for post in @posts
 xml.item do
  ...
  xml.pubDate post.date_posted.rfc822
 ...
 end
end

That works fine on my development and production sites. However, when
I run this action during a functional test, the "rfc822" method comes
up missing! I checked my YAML and it''s getting the date in their
correctly. The date_posted object is of class ''Time'' and has
the
correct data in it. It just doesn''t have this rfc822 method.

Has anyone else seen this? Is it a bug in rails? BTW I''m using the
rails .13.1. against a MySQL database. Thanks for any help!

Justin

p.s. Please CC me as I am not currently subscribed to the list.