replaced sleep with a changed mtime for the test file

test/functional/autoread/focus_spec.lua

@@ -1,5 +1,6 @@
 local helpers = require('test.functional.helpers')(after_each)
 local thelpers = require('test.functional.terminal.helpers')
+local lfs = require('lfs')
 local clear = helpers.clear
 local retry = helpers.retry
 local nvim_prog = helpers.nvim_prog
@@ -27,6 +28,7 @@ describe('autoread TUI FocusGained/FocusLost', function()
     ]]
 
     helpers.write_file(path, '')
+    lfs.touch(path, os.time() - 10)
     feed_command('edit '..path)
     retry(2, 3 * screen.timeout, function()
       feed_data('\027[O')
@@ -42,7 +44,6 @@ describe('autoread TUI FocusGained/FocusLost', function()
       {3:-- TERMINAL --}                                    |
     ]]}
 
-    helpers.sleep(2000)
     helpers.write_file(path, expected_addition)
 
     retry(2, 3 * screen.timeout, function()