Added test case to assert all object types finalize properly.

The test case uses a weak ref to assert objects can finalize,
and then spins the main loop shortly after finalizing to assert
that the finalized object did not leak GSources into the main context
causing latent crashes.

gtk/tests/Makefile.am

@@ -160,6 +160,11 @@ TEST_PROGS			+= gtkmenu
 gtkmenu_SOURCES			 = gtkmenu.c
 gtkmenu_LDADD			 = $(progs_ldadd)
 
+
+TEST_PROGS			+= objects-finalize
+objects_finalize_SOURCES         = objects-finalize.c
+objects_finalize_LDADD	         = $(progs_ldadd)
+
 EXTRA_DIST +=				\
 	file-chooser-test-dir/empty     \
 	file-chooser-test-dir/text.txt

gtk/tests/objects-finalize.c

@@ -0,0 +1,113 @@
+/* objects-finalize.c
+ * Copyright (C) 2013 Openismus GmbH
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Tristan Van Berkom <tristanvb@openismus.com>
+ */
+#include <gtk/gtk.h>
+#include <string.h>
+
+#ifdef GDK_WINDOWING_X11
+# include <gdk/gdkx.h>
+#endif
+
+
+typedef GType (*GTypeGetFunc) (void);
+
+static gboolean
+main_loop_quit_cb (gpointer data)
+{
+  gtk_main_quit ();
+
+  return FALSE;
+}
+
+static void
+check_finalized (gpointer data,
+		 GObject *where_the_object_was)
+{
+  gboolean *did_finalize = (gboolean *)data;
+
+  *did_finalize = TRUE;
+}
+
+static void
+test_finalize_object (gconstpointer data)
+{
+  GType test_type = GPOINTER_TO_SIZE (data);
+  GObject *object;
+  gboolean finalized = FALSE;
+
+  object = g_object_new (test_type, NULL);
+  g_assert (G_IS_OBJECT (object));
+
+  /* Make sure we have the only reference */
+  if (g_object_is_floating (object))
+    g_object_ref_sink (object);
+
+  /* Assert that the object finalizes properly */
+  g_object_weak_ref (object, check_finalized, &finalized);
+
+  /* Toplevels are owned by GTK+, just tell GTK+ to destroy it */
+  if (GTK_IS_WINDOW (object))
+    gtk_widget_destroy (GTK_WIDGET (object));
+  else
+    g_object_unref (object);
+
+  g_assert (finalized);
+
+  /* Even if the object did finalize, it may have left some dangerous stuff in the GMainContext */
+  g_timeout_add (50, main_loop_quit_cb, NULL);
+  gtk_main();
+}
+
+int
+main (int argc, char **argv)
+{
+  const GType *all_types;
+  guint n_types = 0, i;
+
+  /* initialize test program */
+  gtk_test_init (&argc, &argv);
+  gtk_test_register_all_types ();
+
+  all_types = gtk_test_list_all_types (&n_types);
+
+  for (i = 0; i < n_types; i++)
+    {
+      if (g_type_is_a (all_types[i], G_TYPE_OBJECT) &&
+	  G_TYPE_IS_INSTANTIATABLE (all_types[i]) &&
+	  !G_TYPE_IS_ABSTRACT (all_types[i]) &&
+#ifdef GDK_WINDOWING_X11
+	  all_types[i] != GDK_TYPE_X11_WINDOW &&
+	  all_types[i] != GDK_TYPE_X11_CURSOR &&
+	  all_types[i] != GDK_TYPE_X11_SCREEN &&
+	  all_types[i] != GDK_TYPE_X11_DISPLAY &&
+	  all_types[i] != GDK_TYPE_X11_DEVICE_MANAGER_XI2 &&
+	  all_types[i] != GDK_TYPE_X11_DISPLAY_MANAGER &&
+#endif
+	  /* Not allowed to finalize a GdkPixbufLoader without calling gdk_pixbuf_loader_close() */
+	  all_types[i] != GDK_TYPE_PIXBUF_LOADER)
+	{
+	  gchar *test_path = g_strdup_printf ("/FinalizeObject/%s", g_type_name (all_types[i]));
+
+	  g_test_add_data_func (test_path, GSIZE_TO_POINTER (all_types[i]), test_finalize_object);
+
+	  g_free (test_path);
+	}
+    }
+
+  return g_test_run();
+}