I'm learning how unit testing is done in Rails, and I've run into a problem involving Authlogic.

According to the Documentation there are a few things required to use Authlogic stuff in your tests:

test_helper.rb:

require "authlogic/test_case"

class ActiveSupport::TestCase
  setup :activate_authlogic
end

Then in my functional tests I can login users:

UserSession.create(users(:tester))

The problem seems to stem from the setup :activate_authlogic line in test_helper.rb, whenever that is included, I get the following errors when running functional tests:

NoMethodError: undefined method `request=' for nil:NilClass
    authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:63:in `send'
    authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:63:in `method_missing'

If I remove setup :activate_authlogic and add instead Authlogic::Session::Base.controller = Authlogic::ControllerAdapters::RailsAdapter.new(self) to test_helper.rb, my functional tests seem to work but now my unit tests fail:

NoMethodError: undefined method `params' for ActiveSupport::TestCase:Class
    authlogic (2.1.3) lib/authlogic/controller_adapters/abstract_adapter.rb:30:in `params'
    authlogic (2.1.3) lib/authlogic/session/params.rb:96:in `params_credentials'
    authlogic (2.1.3) lib/authlogic/session/params.rb:72:in `params_enabled?'
    authlogic (2.1.3) lib/authlogic/session/params.rb:66:in `persist_by_params'
    authlogic (2.1.3) lib/authlogic/session/callbacks.rb:79:in `persist'
    authlogic (2.1.3) lib/authlogic/session/persistence.rb:55:in `persisting?'
    authlogic (2.1.3) lib/authlogic/session/persistence.rb:39:in `find'
    authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:96:in `get_session_information'
    authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:95:in `each'
    authlogic (2.1.3) lib/authlogic/acts_as_authentic/session_maintenance.rb:95:in `get_session_information'
    /test/unit/user_test.rb:23:in `test_should_save_user_with_email_password_and_confirmation'

What am I doing wrong?