[gtk/ci-default-settings] reftests: Enforce default settings

[Matthias Clasen <matthiasc src gnome org>]

commit b541ad48d1c7060e2d38205d4874675e27578b9b
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jul 19 13:10:31 2021 -0400

    reftests: Enforce default settings
    
    Set all settings to their default values, so we
    are less dependent on the environment to be set
    up just right. In particular, this fixes animations
    being disabled when we happen to run in a vm.

 testsuite/reftests/gtk-reftest.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
---
diff --git a/testsuite/reftests/gtk-reftest.c b/testsuite/reftests/gtk-reftest.c
index 585e1c393d..1a51a9756b 100644
--- a/testsuite/reftests/gtk-reftest.c
+++ b/testsuite/reftests/gtk-reftest.c
@@ -368,6 +368,40 @@ add_test_for_file (GFile *file)
   g_list_free_full (files, g_object_unref);
 }
 
+static void
+enforce_default_settings (void)
+{
+  GtkSettings *settings;
+  GTypeClass *klass;
+  GParamSpec **pspecs;
+  guint n_pspecs;
+  int i;
+
+  settings = gtk_settings_get_default ();
+
+  klass = g_type_class_ref (G_OBJECT_TYPE (settings));
+
+  pspecs = g_object_class_list_properties (klass, &n_pspecs);
+  for (i = 0; i < n_pspecs; i++)
+    {
+      GParamSpec *pspec = pspecs[i];
+      const GValue *value;
+
+      if ((pspec->flags & G_PARAM_WRITABLE) == 0)
+        continue;
+
+      if (pspec->value_type == G_TYPE_HASH_TABLE)
+        continue;
+
+      value = g_param_spec_get_default_value (pspec);
+      g_object_set_property (settings, pspec->name, value);
+    }
+
+  g_free (pspecs);
+
+  g_type_class_unref (klass);
+}
+
 int
 main (int argc, char **argv)
 {
@@ -382,6 +416,8 @@ main (int argc, char **argv)
   if (!parse_command_line (&argc, &argv))
     return 1;
 
+  enforce_default_settings ();
+
   if (arg_base_dir)
     basedir = arg_base_dir;
   else