Attempt to speed up filenotify-tests

* test/lisp/filenotify-tests.el (file-notify-test04-autorevert):
Run with a lower `auto-revert-interval` (1 s) and adjust the
a timeout value.  This should lower the time for this particular
test from 25 to below 10 s.

1 files changed, 8 insertions, 6 deletions

diff --git a/test/lisp/filenotify-tests.el b/test/lisp/filenotify-tests.el
index 97b7c46c689..0873910ddf9 100644
--- a/test/lisp/filenotify-tests.el
+++ b/test/lisp/filenotify-tests.el
@@ -939,10 +939,13 @@ delivered."
   :tags '(:expensive-test)
   (skip-unless (file-notify--test-local-enabled))
 
-  ;; `auto-revert-buffers' runs every 5".  And we must wait, until the
-  ;; file has been reverted.
-  (let ((timeout (if (file-remote-p temporary-file-directory) 60 10))
-        buf)
+  ;; Run with shortened `auto-revert-interval' for a faster test.
+  (let* ((auto-revert-interval 1)
+         (timeout (if (file-remote-p temporary-file-directory)
+                      60   ; FIXME: can this be shortened?
+                    (* auto-revert-interval 2.5)))
+         buf)
+    (auto-revert-set-timer)
     (unwind-protect
         (progn
           ;; In the remote case, `vc-refresh-state' returns undesired
@@ -960,10 +963,9 @@ delivered."
             (sleep-for 1)
             (auto-revert-mode 1)
 
-            ;; `auto-revert-buffers' runs every 5".
             (with-timeout (timeout (ignore))
               (while (null auto-revert-notify-watch-descriptor)
-                (sleep-for 1)))
+                (sleep-for 0.2)))
 
             ;; `file-notify--test-monitor' needs to know
             ;; `file-notify--test-desc' in order to compute proper