[test/font] Test get_face() / get_parent()
diff --git a/test/test-font.c b/test/test-font.c
index d75ae99..bd2655b 100644
--- a/test/test-font.c
+++ b/test/test-font.c
@@ -72,6 +72,10 @@
   hb_face_destroy (face);
 
 
+  g_assert (hb_font_get_face (font) == face);
+  g_assert (hb_font_get_parent (font) == NULL);
+
+
   /* Check scale */
 
   hb_font_get_scale (font, NULL, NULL);