added user feedback functional test

app/models/upload.rb

@@ -232,7 +232,7 @@ class Upload < ActiveRecord::Base
     end
     
     def temp_file_path
-      @temp_file_path ||= File.join(Rails.root, "tmp", "#{Time.now.to_f}.#{$PROCESS_ID}")
+      @temp_file_path ||= File.join(Rails.root, "tmp", "upload_#{Time.now.to_f}.#{$PROCESS_ID}")
     end
   end
   

app/models/user_feedback.rb

@@ -3,7 +3,7 @@ class UserFeedback < ActiveRecord::Base
   belongs_to :user
   belongs_to :creator, :class_name => "User"
   before_validation :initialize_creator, :on => :create
-  attr_accessible :body, :user_id, :is_positive
+  attr_accessible :body, :user_id, :is_positive, :user_name
   validates_presence_of :user, :creator, :body
   validate :creator_is_privileged
   
@@ -11,6 +11,10 @@ class UserFeedback < ActiveRecord::Base
     self.creator_id = CurrentUser.id
   end
   
+  def user_name=(name)
+    self.user_id = User.name_to_id(name)
+  end
+  
   def creator_is_privileged
     if !creator.is_privileged?
       errors[:creator] << "must be privileged"