Pluggable Authentication Service plugin
=======================================

Lets start with some initial setup. First we create a plugin:

  >>> from plone.openid.plugins.oid import OpenIdPlugin
  >>> plugin=OpenIdPlugin("openid")

Next we create a fake request:

  >>> from Testing.makerequest import makerequest
  >>> plugin=makerequest(plugin)
  >>> request=plugin.REQUEST

Lets  log all exceptions, which is useful for debugging.

  >>> self.portal.error_log._ignored_exceptions = ()
  >>> self.portal.left_slots = self.portal.right_slots = []


Login challenge
---------------

The login sequence works by hooking into a form submit containing an
identity URL and redirecting to an OpenID server.

  >>> request.form["__ac_identity_url"]="http://plone.myopenid.com"
  >>> plugin.extractCredentials(request)