Add RS OAuth controller specs

Gemfile

@@ -64,6 +64,7 @@ group :development, :test do
   # Use sqlite3 as the database for Active Record
   gem 'sqlite3', '~> 1.4'
   gem 'rspec-rails'
+  gem 'rails-controller-testing'
   gem "byebug", "~> 11.1"
 end