Test failure with Postgresql+ruby1.8 (#2549).

git-svn-id: http://svn.redmine.org/redmine/trunk@12870 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/mailer_test.rb

@@ -470,7 +470,7 @@ class MailerTest < ActiveSupport::TestCase
   def test_news_added_should_notify_project_news_watchers
     user1 = User.generate!
     user2 = User.generate!
-    news = News.first
+    news = News.find(1)
     news.project.enabled_module('news').add_watcher(user1)
 
     Mailer.news_added(news).deliver