[gnome-builder] snippets: add snippets for unit test files

[Christian Hergert <chergert src gnome org>]

commit 65a9a05612c21b0c4d433aaeb334c2ec12e6e11d
Author: Günther Wagner <info gunibert de>
Date:   Sun Sep 19 18:58:34 2021 +0200

    snippets: add snippets for unit test files

 src/plugins/snippets/snippets/gobject.snippets | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
---
diff --git a/src/plugins/snippets/snippets/gobject.snippets b/src/plugins/snippets/snippets/gobject.snippets
index adbcca01c..1f6672481 100644
--- a/src/plugins/snippets/snippets/gobject.snippets
+++ b/src/plugins/snippets/snippets/gobject.snippets
@@ -826,3 +826,20 @@ snippet gobj_set_property
                                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
                        }
        }
+snippet testmain
+- scope c, cpp
+       #include <glib.h>
+
+       gint
+       main (gint   argc,
+             gchar *argv[])
+       {
+               g_test_init (&argc, &argv, NULL);
+
+               $0
+
+               return g_test_run ();
+       }
+snippet testadd
+- scope c, cpp
+       g_test_add_func($1, $2);$0