[gtk+] Add a testcase for closing display before exit

[Matthias Clasen <matthiasc src gnome org>]

commit 1bf16944c96da86fbec0db84c248e7ab27ce41a3
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 29 19:24:22 2013 -0400

    Add a testcase for closing display before exit
    
    It works right now, lets keep it that way.

 testsuite/gtk/Makefile.am    |    1 +
 testsuite/gtk/displayclose.c |   41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/gtk/Makefile.am b/testsuite/gtk/Makefile.am
index 9c307b9..7228a36 100644
--- a/testsuite/gtk/Makefile.am
+++ b/testsuite/gtk/Makefile.am
@@ -54,6 +54,7 @@ TEST_PROGS +=                         \
        treepath                \
        treeview                \
        window                  \
+       displayclose            \
        $(NULL)
 
 if OS_UNIX
diff --git a/testsuite/gtk/displayclose.c b/testsuite/gtk/displayclose.c
new file mode 100644
index 0000000..39fd794
--- /dev/null
+++ b/testsuite/gtk/displayclose.c
@@ -0,0 +1,41 @@
+#include <gtk/gtk.h>
+
+int
+main (int argc, char **argv)
+{
+  const gchar *display_name;
+  GdkDisplay *display;
+  GtkWidget *win, *but;
+
+  g_log_set_always_fatal (G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL);
+
+  if (!gtk_parse_args (&argc, &argv))
+    return 1;
+
+  display_name = gdk_get_display_arg_name();
+  display = gdk_display_open(display_name);
+
+  if (!display)
+    return 1;
+
+  gdk_display_manager_set_default_display (gdk_display_manager_get (), display);
+
+  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  g_signal_connect (win, "destroy",
+                   G_CALLBACK (gtk_main_quit), NULL);
+  g_signal_connect (win, "delete-event",
+                    G_CALLBACK (gtk_widget_destroy), NULL);
+
+  but = gtk_button_new_with_label ("Try to Exit");
+  g_signal_connect_swapped (but, "clicked",
+                           G_CALLBACK (gtk_widget_destroy), win);
+  gtk_container_add (GTK_CONTAINER (win), but);
+
+  gtk_widget_show_all (win);
+
+  gtk_test_widget_wait_for_draw (win);
+
+  gdk_display_close (display);
+
+  return 0;
+}