Guardfile

guard :rspec, cmd: 'rspec' do
  watch(%r{^spec/.+_spec\.rb$})
  watch(%r{^lib/daru/(.+)\.rb$}) { |m| "spec/#{m[1]}_spec.rb" }
  watch('spec/spec_helper.rb')   { 'spec' }
end

# TODO: Run Rubocop in the background