Add tests to home page url redirect

app/views/admin/application_settings/_form.html.haml

@@ -29,6 +29,7 @@
       = f.label :home_page_url, class: 'control-label'
       .col-sm-10
         = f.text_field :home_page_url, class: 'form-control', placeholder: 'http://company.example.com'
+        %span.help-block We will redirect non-logged in users to this page
     .form-group
       = f.label :sign_in_text, class: 'control-label'
       .col-sm-10

features/admin/settings.feature

@@ -5,5 +5,5 @@ Feature: Admin Settings
     And I visit admin settings page
 
   Scenario: Change application settings
-    When I disable gravatars and save form
-    Then I should be see gravatar disabled
+    When I modify settings and save form
+    Then I should see application settings saved

features/steps/admin/settings.rb

@@ -4,13 +4,15 @@ class Spinach::Features::AdminSettings < Spinach::FeatureSteps
   include SharedAdmin
   include Gitlab::CurrentSettings
 
-  step 'I disable gravatars and save form' do
+  step 'I modify settings and save form' do
     uncheck 'Gravatar enabled'
+    fill_in 'Home page url', with: 'https://about.gitlab.com/'
     click_button 'Save'
   end
 
-  step 'I should be see gravatar disabled' do
+  step 'I should see application settings saved' do
     current_application_settings.gravatar_enabled.should be_false
+    current_application_settings.home_page_url.should == 'https://about.gitlab.com/'
     page.should have_content 'Application settings saved successfully'
   end
 end