require 'simplecov' SimpleCov.start do add_filter 'test' command_name 'Minitest' end require 'what' require 'minitest/autorun' def noop(options = {noop: true}, &block) return 'noop: missing block' unless block out = '---' Doit.stub :options, options do out, _err = capture_io do block.call end end out end