--- /dev/null
+;;; md4-tests.el --- tests for md4.el -*- lexical-binding: t -*-
+
+;; Copyright (C) 2017 Free Software Foundation, Inc.
+
+;; Author: Mark Oteiza <mvoteiza@udel.edu>
+;; Maintainer: emacs-devel@gnu.org
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+(require 'md4)
+
+(defun md4-tests-digest->hex (str)
+ "Print digest STR in hexadecimal."
+ (mapconcat (lambda (x) (format "%02x" x)) str ""))
+
+(ert-deftest md4-test-rfc1320 ()
+ "Verify the test suite results in RFC 1320.
+See <https://tools.ietf.org/html/rfc1320>."
+ (should
+ (equal (md4-tests-digest->hex (md4 "" 0))
+ "31d6cfe0d16ae931b73c59d7e0c089c0"))
+ (should
+ (equal (md4-tests-digest->hex (md4 "a" 1))
+ "bde52cb31de33e46245e05fbdbd6fb24"))
+ (should
+ (equal (md4-tests-digest->hex (md4 "abc" 3))
+ "a448017aaf21d8525fc10ae87aa6729d"))
+ (should
+ (equal (md4-tests-digest->hex (md4 "message digest" 14))
+ "d9130a8164549fe818874806e1c7014b"))
+ (should
+ (equal (md4-tests-digest->hex (md4 "abcdefghijklmnopqrstuvwxyz" 26))
+ "d79e1c308aa5bbcdeea8ed63df412da9"))
+ (should
+ (equal (md4-tests-digest->hex
+ (md4 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" 62))
+ "043f8582f241db351ce627e153e7f0e4"))
+ (should
+ (equal (md4-tests-digest->hex
+ (md4 "12345678901234567890123456789012345678901234567890123456789012345678901234567890" 80))
+ "e33b4ddc9c38f2199c3e7b164fcc0536")))
+
+;;; md4-tests.el ends here