[glib] Improve gsettings test coverage

[Matthias Clasen <matthiasc src gnome org>]

commit 3eeeb7aaa7d601eb6f46005a03638744a890e9f8
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Dec 24 00:05:36 2013 -0500

    Improve gsettings test coverage

 gio/tests/gsettings.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/gio/tests/gsettings.c b/gio/tests/gsettings.c
index 524ff06..6af21cd 100644
--- a/gio/tests/gsettings.c
+++ b/gio/tests/gsettings.c
@@ -2414,6 +2414,15 @@ test_null_backend (void)
   writable = g_settings_is_writable (settings, "greeting");
   g_assert (!writable);
 
+  g_settings_reset (settings, "greeting");
+
+  g_settings_delay (settings);
+  g_settings_set (settings, "greeting", "s", "goodbye world");
+  g_settings_apply (settings);
+  g_settings_get (settings, "greeting", "s", &str);
+  g_assert_cmpstr (str, ==, "Hello, earthlings");
+  g_free (str);
+
   g_object_unref (settings);
   g_object_unref (backend);
 }