TEST ()

{

  GeglBuffer    *buffer, *buffer2;

  GeglRectangle  bound = {0, 0, 20, 20};

  test_start ();

  buffer = gegl_buffer_new (&bound, babl_format ("Y float"));

  vgrad (buffer);

  {

    GeglRectangle rect = *gegl_buffer_get_extent(buffer);

    rect.width-=10;

    rect.height-=10;

  buffer2 = gegl_buffer_new (gegl_buffer_get_extent (buffer), gegl_buffer_get_format (buffer));

  gegl_buffer_copy (buffer, &rect, buffer2, &rect);

  }

  print_buffer (buffer2);

  g_object_unref (buffer);

  g_object_unref (buffer2);

  test_end ();

}