[gimp/wip/Jehan/debugging-flatpak] app: why does the flatpak fails when running tests?

[Jehan <jehanp src gnome org>]

commit 8dea3a7565785b33f7bfb095fa4ea9a257388d62
Author: Jehan <jehan girinstud io>
Date:   Thu Jul 22 19:20:41 2021 +0200

    app: why does the flatpak fails when running tests?

 app/tests/test-save-and-export.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/app/tests/test-save-and-export.c b/app/tests/test-save-and-export.c
index 50fbd24ddc..f68baf1a9a 100644
--- a/app/tests/test-save-and-export.c
+++ b/app/tests/test-save-and-export.c
@@ -106,6 +106,7 @@ opened_xcf_file_files (gconstpointer data)
   GFile             *file;
   gchar             *filename;
   GimpPDBStatusType  status;
+  GError            *error = NULL;
 
   filename = g_build_filename (g_getenv ("GIMP_TESTING_ABS_TOP_SRCDIR"),
                                "app/tests/files/gimp-2-6-file.xcf",
@@ -122,8 +123,12 @@ opened_xcf_file_files (gconstpointer data)
                            GIMP_RUN_NONINTERACTIVE,
                            &status,
                            NULL /*mime_type*/,
-                           NULL /*error*/);
+                           &error);
 
+  if (! image)
+    printf("NO image: %s\n", error->message);
+  else if (! GIMP_IS_IMAGE (image))
+    printf("image but not GimpImage? %s\n", error ? error->message : "PLOP");
   g_assert (g_file_equal (gimp_image_get_file (image), file));
   g_assert (gimp_image_get_imported_file (image) == NULL);
   g_assert (gimp_image_get_exported_file (image) == NULL);