Add a test case to previous commit

CHANGELOG.rdoc

@@ -9,6 +9,7 @@
   * valid_for_authentication? must now return a boolean
 
 * bug fix
+  * Ensure the failure app still respects config.relative_url_root
   * `/users/sign_in` doesn't choke on protected attributes used to select sign in scope (by @Paymium)
   * `failed_attempts` is set to zero after any sign in (including via reset password) (by @rodrigoflores)
   * Added token expiration on timeout (by @antiarchitect)

test/failure_app_test.rb

@@ -29,20 +29,20 @@ class FailureTest < ActiveSupport::TestCase
   end
 
   context 'When redirecting' do
-    test 'return to the default redirect location' do
+    test 'returns to the default redirect location' do
       call_failure
       assert_equal 302, @response.first
       assert_equal 'You need to sign in or sign up before continuing.', @request.flash[:alert]
       assert_equal 'http://test.host/users/sign_in', @response.second['Location']
     end
 
-    test 'return to the default redirect location for wildcard requests' do
+    test 'returns to the default redirect location for wildcard requests' do
       call_failure 'action_dispatch.request.formats' => nil, 'HTTP_ACCEPT' => '*/*'
       assert_equal 302, @response.first
       assert_equal 'http://test.host/users/sign_in', @response.second['Location']
     end
 
-    test 'return to the root path if no session path is available' do
+    test 'returns to the root path if no session path is available' do
       swap Devise, :router_name => :fake_app do
         call_failure :app => RootFailureApp
         assert_equal 302, @response.first
@@ -51,6 +51,14 @@ class FailureTest < ActiveSupport::TestCase
       end
     end
 
+    test 'returns to the default redirect location considering the relative url root' do
+      swap Rails.application.config, :relative_url_root => "/sample" do
+        call_failure
+        assert_equal 302, @response.first
+        assert_equal 'http://test.host/sample/users/sign_in', @response.second['Location']
+      end
+    end
+
     test 'uses the proxy failure message as symbol' do
       call_failure('warden' => OpenStruct.new(:message => :invalid))
       assert_equal 'Invalid email or password.', @request.flash[:alert]