# frozen_string_literal: true RSpec.describe 'null integration', mutant: false do let(:base_cmd) { 'bundle exec mutant -I lib --require test_app "TestApp*"' } around do |example| Dir.chdir(TestApp.root) do example.run end end specify 'it allows to kill mutations' do expect(Kernel.system(base_cmd)).to be(false) end end