[pango/fix-font-roundtrip] debug macos tests

[Matthias Clasen <matthiasc src gnome org>]

commit c96e24b010c853ce64ee5d10e8e0ced8d689d3d8
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 24 11:57:45 2021 -0500

    debug macos tests

 tests/test-font.c | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/tests/test-font.c b/tests/test-font.c
index 890872a5..49276d2f 100644
--- a/tests/test-font.c
+++ b/tests/test-font.c
@@ -263,6 +263,12 @@ test_roundtrip_plain (void)
   font = pango_context_load_font (context, desc);
   desc2 = pango_font_describe (font);
 
+  if (!pango_font_description_equal (desc2, desc))
+    {
+      g_print ("desc: %s\n", pango_font_description_to_string (desc));
+      g_print ("desc2: %s\n", pango_font_description_to_string (desc2));
+    }
+
   g_assert (pango_font_description_equal (desc2, desc));
 
   pango_font_description_free (desc2);