Rails - Apr 2006 - Integration testing an api

Hello,
  I''m building a web app with an api that models the basecamp api. 
Everything works fine from the command line using curl.

curl -H ''Accept: application/xml'' -H ''Content-Type:
application/xml''
-u username:password -d ''<request>...</request>''
http://url

My question is how to setup integration testing against the api.  Does
the integration testing framework support HTTP authentication (Basic)?

Thanks,
Zack