Hello, In case it may help to others. When I tried using this gem in a Rails 5 beta3 project with minitest I got the following fatal error ``` ruby uninitialized constant AbstractController::Rendering (NameError) ``` I changed Gemfile adding a _require false_ ``` ruby group :test do gem 'rails-controller-testing', :require => false end ``` and required the gem in the `test_helper.rb` after others ``` ruby ENV['RAILS_ENV'] ||= 'test' require File.expand_path('../../config/environment', __FILE__) require 'minitest/unit' require 'minitest/autorun' require 'rails/test_help' require 'rails-controller-testing' ... ``` Thanks