I upgraded a project to Rails 2.3.2 a while back and have been getting the following error when running some unit tests…
NoMethodError: undefined method `assert_select_email' for #<UserMailerTest>
I posted to the rubyonrails-talk google group but never got a response, and I was not the first to post about this problem to that group. However I found someone else commenting on this in an rspec lighthouse ticket and they’d fixed it for their setup. It was an easy conversion to non-rspec and here’s the line you need to add to your test/test_helper.rb file
I’m not sure why it’s broken but it appears to have regressed in one of the Rails 2.3.2 RCs.