Rails - Jan 2008 - Can't test application controller methods in functional tests?

I have two methods in application controller that I want to test from
ForumController:

-----------------------
class ApplicationController < ActionController::Base
...
  def logout
    session[:username] = nil
    session[:admin] = nil
    redirect_to(request.request_uri)
  end
...
  def home
    redirect_to(:controller => ''forum'', :action =>
''list_forum'')
  end
-------------------
class ForumController < ApplicationController
  layout "forum"
...
end
-------------------

For method home, action list_forum works according to my test, so that
shouldn''t be the problem.  The corresponding tests gives errors:

-------------------
require File.dirname(__FILE__) + ''/../test_helper''
require ''forum_controller''
# Re-raise errors caught by the controller.
class ForumController; def rescue_action(e) raise e end; end

class ForumControllerTest < Test::Unit::TestCase
  #add fixtures:
  fixtures :messages, :message_threads, :message_boards, :forums

  def setup
    @controller = ForumController.new
    @request    = ActionController::TestRequest.new
    @response   = ActionController::TestResponse.new
  end
...
  # test logout (all cases)
  def test_logout
    get :logout, nil, nil
    assert_response :success
    assert_nil session[:username]
    assert_nil session[:admin]

    get :logout, nil, {:username => ''bogus''}
    assert_response :success
    assert_nil session[:username]
    assert_nil session[:admin]

    get :logout, nil, {:username => ''Admin'', :admin =>
1}
    assert_response :success
    assert_nil session[:username]
    assert_nil session[:admin]
  end

  # test home
  def test_home
    get :home
    assert_response :success
    assert_redirected_to ''list_forum''
    assert_not_nil assigns["forums"]
  end
end
-------------------
  5) Error:
test_home(ForumControllerTest):
ActionController::RoutingError: No route matches
{:action=>"home", :controller=>"forum"}
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1299:in `generate''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1244:in `generate_extras''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1240:in `extra_keys''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:105:in `assign_parameters''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:380:in `process''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:356:in `get''
    forum_controller_test.rb:464:in `test_home''

  6) Error:
test_logout(ForumControllerTest):
ActionController::RoutingError: No route matches
{:action=>"logout", :controller=>"forum"}
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1299:in `generate''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1244:in `generate_extras''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/routing.rb:1240:in `extra_keys''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:105:in `assign_parameters''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:380:in `process''
    /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.5/lib/
action_controller/test_process.rb:356:in `get''
    forum_controller_test.rb:446:in `test_logout''
-------------------

What''s up with that?  Can I not test ApplicationController methods in
ForumController?

Also, how can I set requested uri?
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