Fixed that test_email raises an error with #deliver_later (#26791).

git-svn-id: http://svn.redmine.org/redmine/trunk@17587 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/mailer_test.rb

@@ -605,6 +605,12 @@ class MailerTest < ActiveSupport::TestCase
     end
   end
 
+  def test_test_email_later
+    user = User.find(1)
+    assert Mailer.test_email(user).deliver_later
+    assert_equal 1, ActionMailer::Base.deliveries.size
+  end
+
   def test_reminders
     Mailer.reminders(:days => 42)
     assert_equal 1, ActionMailer::Base.deliveries.size