Ensure only one client is managed for given window

features/steps/run_steps.rb

@@ -27,6 +27,11 @@ When /^I tell uhwm to quit$/ do
   x_key 'alt+shift+q'
 end
 
+When /^I quit uhwm$/ do
+  x_key 'alt+shift+q'
+  assert_exit_status 0
+end
+
 Then /^the exit status must be (\d+)$/ do |exit_status|
   assert_exit_status exit_status.to_i
 end