I hope there''s not a typo this time ;-) With self.use_instantiated_fixtures = false in test_helper.rb (default since 1.0 version) I want on demand instances. This @publish_articles[''article_linux''] return a Fixture object (breakpointed, I see the data of fixture fields). So I assume that publish_articles is well populated with fixture datas This assert_equal publish_articles(:article_linux).title, @article.title produce an error because publish_articles(:article_linux) evaluate to nil Why ? I don''t see the reason. -- Posted via http://www.ruby-forum.com/.