Login link unexpected logs you out (#12611).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11122 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/account_controller.rb

@@ -25,7 +25,9 @@ class AccountController < ApplicationController
   # Login request and validation
   def login
     if request.get?
-      logout_user
+      if User.current.logged?
+        redirect_to home_url
+      end
     else
       authenticate_user
     end

test/functional/account_controller_test.rb

@@ -33,6 +33,14 @@ class AccountControllerTest < ActionController::TestCase
     assert_select 'input[name=password]'
   end
 
+  def test_get_login_while_logged_in_should_redirect_to_home
+    @request.session[:user_id] = 2
+
+    get :login
+    assert_redirected_to '/'
+    assert_equal 2, @request.session[:user_id]
+  end
+
   def test_login_should_redirect_to_back_url_param
     # request.uri is "test.host" in test environment
     post :login, :username => 'jsmith', :password => 'jsmith', :back_url => 'http://test.host/issues/show/1'