Rakefile in middleman-robots-1.3.4 vs Rakefile in middleman-robots-1.3.5

@@ -1,11 +1,11 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 
 task default: :test
 
 desc 'test command'
 task :test do
-  Dir.glob('tests/test_*.rb') do |f|
-    sh "bundle exec ruby #{f}"
-  end
+  sh 'bundle exec rspec spec/'
   sh 'bundle exec cucumber features/'
 end