Extract user acceptance test helpers in a module

features/steps/x_steps.rb

@@ -1,21 +1,8 @@
-def x_key key
-  fail "cannot simulate X key `#{key}'" unless system "xdotool key #{key}"
-end
-
-def x_socket_check pid
-  case RbConfig::CONFIG['host_os']
-  when /linux/
-    `netstat -xp 2> /dev/null`.lines.grep /\s+#{pid}\/ruby/
-  else
-    `sockstat -u`.lines.grep /\s+ruby.+\s+#{pid}/
-  end.any?
-end
-
 When /^I press the default quit key binding$/ do
   x_key 'alt+q'
 end
 
 Then /^it must connect to X display$/ do
   uhwm_wait_output 'Connected to'
-  expect(x_socket_check @process.pid).to be true
+  expect(x_socket_check uhwm_pid).to be true
 end