Rakefile in mmfont-1.0.0 vs Rakefile in mmfont-1.0.1

@@ -1,9 +1,22 @@
-require "bundler/gem_tasks"
+require 'bundler/gem_tasks'
 
-require "rake/testtask"
+require 'rake/testtask'
+require 'rubocop/rake_task'
 
 Rake::TestTask.new do |t|
+  t.libs << 'lib'
+  t.libs << 'spec'
   t.test_files = FileList['test/*_test.rb']
+end
+
+# Run robocop
+desc 'Run RuboCop on the lib directory'
+RuboCop::RakeTask.new(:rubocop) do |task|
+  task.patterns = ['lib/**/*.rb']
+  # only show the files with failures
+  task.formatters = ['files']
+  # don't abort rake on failure
+  task.fail_on_error = false
 end
 
 task default: :test