require 'devtools' Devtools.init_rake_tasks namespace :metrics do desc 'Run mutant' task :mutant => :coverage do project = Devtools.project require File.expand_path('../spec/support/zombie.rb', __FILE__) Zombie.setup status = Zombie::CLI.run(%W(::Mutant --rspec-dm2)) if status.nonzero? raise 'Mutant task is not successful' end end end