Use lexical-binding for rfc2045.el and add tests

* lisp/mail/rfc2045.el: Use-lexical-binding.
* test/lisp/mail/rfc2045-tests.el: New file.

2 files changed, 37 insertions, 1 deletions

diff --git a/lisp/mail/rfc2045.el b/lisp/mail/rfc2045.el
index 7d962ea2348..dba9c04cc83 100644
--- a/lisp/mail/rfc2045.el
+++ b/lisp/mail/rfc2045.el
@@ -1,4 +1,4 @@
-;;; rfc2045.el --- Functions for decoding rfc2045 headers
+;;; rfc2045.el --- Functions for decoding rfc2045 headers  -*- lexical-binding:t -*-
 
 ;; Copyright (C) 1998-2020 Free Software Foundation, Inc.
 
diff --git a/test/lisp/mail/rfc2045-tests.el b/test/lisp/mail/rfc2045-tests.el
new file mode 100644
index 00000000000..844b16a1d93
--- /dev/null
+++ b/test/lisp/mail/rfc2045-tests.el
@@ -0,0 +1,36 @@
+;;; rfc2045-tests.el --- Tests for rfc2045.el  -*- lexical-binding:t -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Stefan Kangas <stefankangas@gmail.com>
+
+;; 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 <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+
+(ert-deftest rfc2045-test-encode-string ()
+  (should (equal (rfc2045-encode-string "foo" "bar") "foo=bar"))
+  (should (equal (rfc2045-encode-string "foo" "bar-baz") "foo=bar-baz"))
+  (should (equal (rfc2045-encode-string "foo" "bar baz") "foo=\"bar baz\""))
+  (should (equal (rfc2045-encode-string "foo" "bar\tbaz") "foo=\"bar\tbaz\""))
+  (should (equal (rfc2045-encode-string "foo" "bar\nbaz") "foo=\"bar\nbaz\"")))
+
+(provide 'rfc2045-tests)
+;;; rfc2045-tests.el ends here