How to integrate rubocop with Rake?

Question

rubocop is a code style checker for Ruby. A similar tool to rubocop, Cane, can be integrated with Rake. I prefer rubocop to Cane since rubocop makes checks based on the Ruby Sty

Answer 1

You can shell out via Rake with the options you prefer:

  desc 'Run Rubocop with options'
  task rubocop: :environment do
    sh 'bundle exec rubocop -D --format offenses --format progress || true'
  end

I then recommend modifying the default task to include the output. The trick is to clear the task and then add back what you want. Note the need to end with || true so that an error from Rubocop will not prevent the next task from running. Here's what I do, which also uses parallel tests:

task(:default).clear.enhance ['parallel:parallel_prepare', 'parallel:spec',
                              'parallel:features', 'lint:rubocop',
                              'lint:rails_best_practices']