TEST ()
{
GeglBuffer *buffer;
GeglRectangle rect = {0, 0, 20, 20};
test_start ();
buffer = gegl_buffer_new (&rect, babl_format ("Y float"));
fill (buffer, 0.5);
rectangle (buffer, 5,5, 10, 10, 0.0);
print_buffer (buffer);
g_object_unref (buffer);
test_end ();
}