--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/bug-59451/bug-59451.tst	Sat Nov 14 09:47:41 2020 +0100
@@ -0,0 +1,47 @@
+########################################################################
+##
+## Copyright (C) 2020 The Octave Project Developers
+##
+## See the file COPYRIGHT.md in the top-level directory of this
+## distribution or <https://octave.org/copyright/>.
+##
+## This file is part of Octave.
+##
+## Octave is free software: you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, see
+## <https://www.gnu.org/licenses/>.
+##
+########################################################################
+
+## Test if function handles correctly dispatch to class methods while keeping
+## a link to the original function file.
+%!test <*59451>
+%! dpi = pi;
+%! spi = single (pi);
+%! ## Create function handle
+%! fh = @bug59451;
+%! ## All of these must dispatch to the corresponding function file.
+%! assert (fh (dpi, dpi), "none");
+%! assert (fh (dpi, spi), "none");
+%! assert (fh (spi, spi), "none");
+%! assert (fh (spi, dpi), "none");
+%! assert (fh ({}, {}), "none");
+%! ## cd to a directory that contains class overloads
+%! cd foo
+%! ## The overloads must take precedence.
+%! assert (fh (dpi, dpi), "double");
+%! assert (fh (dpi, spi), "single");
+%! assert (fh (spi, spi), "single");
+%! assert (fh (spi, dpi), "single");
+%! ## This must still dispatch to the original function file.
+%! assert (fh ({}, {}), "none");