Testing Print CSS - spec/spec_helper.rb

spec_helper.rb

RSpec.configure do |config|
   .... # The rest of your Rspec configuration

  
   # Here we are going to precompile our assets any time 
   # we encounter a feature spec group
  
   config.before(:all) do |_config|
     case self.class.metadata[:type]
     when :feature
       `bundle exec rake assets:precompile`
     end
   end
end