fixed upload tests

app/models/upload.rb

@@ -260,7 +260,7 @@ class Upload < ActiveRecord::Base
 
       self.file_path = temp_file_path
 
-      if file.tempfile
+      if file.respond_to?(:tempfile) && file.tempfile
         FileUtils.cp(file.tempfile.path, file_path)
       else
         File.open(file_path, 'wb') do |out| 

test/functional/uploads_controller_test.rb

@@ -64,7 +64,9 @@ class UploadsControllerTest < ActionController::TestCase
     context "create action" do
       should "create a new upload" do
         assert_difference("Upload.count", 1) do
-          post :create, {:upload => {:file => upload_jpeg("#{Rails.root}/test/files/test.jpg"), :tag_string => "aaa", :rating => "q", :source => "aaa"}}, {:user_id => @user.id}
+          file = Rack::Test::UploadedFile.new("#{Rails.root}/test/files/test.jpg", "image/jpeg")
+          file.stubs(:tempfile).returns(file)
+          post :create, {:upload => {:file => file, :tag_string => "aaa", :rating => "q", :source => "aaa"}}, {:user_id => @user.id}
         end
       end
     end

test/test_helper.rb

@@ -18,7 +18,7 @@ module UploadTestMethods
   		define_method(:original_filename) {filename}
   		define_method(:content_type) {content_type}
   	end
-
+  	
   	tempfile
   end