[gnome-desktop] tests: Add a wall clock test for the notify::clock callback

[Bastien Nocera <hadess src gnome org>]

commit cb9597ac27bd0c629437d61e7dfd1a5582924201
Author: Kalev Lember <kalevlember gmail com>
Date:   Tue May 20 23:27:21 2014 +0200

    tests: Add a wall clock test for the notify::clock callback
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730447

 tests/wall-clock.c |   45 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 45 insertions(+), 0 deletions(-)
---
diff --git a/tests/wall-clock.c b/tests/wall-clock.c
index 6204909..bb04709 100644
--- a/tests/wall-clock.c
+++ b/tests/wall-clock.c
@@ -101,6 +101,50 @@ test_clock_format_setting (void)
        setlocale (LC_ALL, save_locale);
 }
 
+static gboolean
+on_notify_clock_timeout (gpointer user_data)
+{
+       g_error ("Timeout waiting for notify::clock");
+       g_assert_not_reached ();
+       return FALSE;
+}
+
+static void
+on_clock_changed (GnomeWallClock *clock,
+                  GParamSpec     *pspec,
+                  gpointer        user_data)
+{
+       GMainLoop *main_loop = user_data;
+
+       /* Nothing much to do here; the test was just to ensure we get the callback */
+
+       g_main_loop_quit (main_loop);
+}
+
+static void
+test_notify_clock (void)
+{
+       GMainLoop *main_loop;
+       GnomeWallClock *clock;
+       GSettings *settings;
+
+       main_loop = g_main_loop_new (NULL, FALSE);
+       settings = g_settings_new ("org.gnome.desktop.interface");
+
+       /* Show seconds so we don't have to wait too long for the callback */
+       g_settings_set_boolean (settings, "clock-show-seconds", TRUE);
+
+       clock = gnome_wall_clock_new ();
+       g_signal_connect (clock, "notify::clock", G_CALLBACK (on_clock_changed), main_loop);
+       g_timeout_add_seconds (5, on_notify_clock_timeout, NULL);
+
+       g_main_loop_run (main_loop);
+
+       g_main_loop_unref (main_loop);
+       g_object_unref (clock);
+       g_object_unref (settings);
+}
+
 int
 main (int   argc,
       char *argv[])
@@ -111,6 +155,7 @@ main (int   argc,
 
        g_test_add_func ("/wall-clock/colon-vs-ratio", test_colon_vs_ratio);
        g_test_add_func ("/wall-clock/24h-clock-format", test_clock_format_setting);
+       g_test_add_func ("/wall-clock/notify-clock", test_notify_clock);
 
        return g_test_run ();
 }