Adds AssetTagHelper to ViewListener class and functional test.

git-svn-id: http://redmine.rubyforge.org/svn/branches/work@1724 e93f8b46-1217-0410-a6f0-8f06a7374b81

hooks/lib/redmine/hook.rb

@@ -96,6 +96,7 @@ module Redmine
       include ActionView::Helpers::PrototypeHelper
       include ActionView::Helpers::NumberHelper
       include ActionView::Helpers::UrlHelper
+      include ActionView::Helpers::AssetTagHelper
       include ActionController::UrlWriter
       include ApplicationHelper
     end

hooks/test/functional/projects_controller_test.rb

@@ -316,4 +316,23 @@ class ProjectsControllerTest < Test::Unit::TestCase
       end
     end
   end
+  
+  # A hook that is manually registered later
+  class ProjectBasedTemplate < Redmine::Hook::ViewListener
+    def view_layouts_base_html_head(context)
+      # Adds a project stylesheet
+      stylesheet_link_tag(context[:project].identifier) if context[:project]
+    end
+  end
+  # Don't use this hook now
+  Redmine::Hook.clear_listeners
+  
+  def test_hook_response
+    Redmine::Hook.add_listener(ProjectBasedTemplate)
+    get :show, :id => 1
+    assert_tag :tag => 'link', :attributes => {:href => '/stylesheets/ecookbook.css'},
+                               :parent => {:tag => 'head'}
+    
+    Redmine::Hook.clear_listeners
+  end
 end