TEST ()
{
  GeglBuffer    *buffer;
  GeglRectangle  rect = {0, 0, 20, 20};

  test_start ();

  buffer = gegl_buffer_new (&rect, babl_format ("Y float"));
  checkerboard (buffer, 3, 0.0, 1.0);
  print_buffer (buffer);
  g_object_unref (buffer);

  test_end ();
}