From cde856bd6c5cb21df66cf42f473402ab8c743e36 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Simen=20Heggest=C3=B8yl?= <simenheg@gmail.com>
Date: Fri, 15 May 2020 20:27:19 +0200
Subject: [PATCH] Use lexical-binding in autoconf.el and add tests

* lisp/progmodes/autoconf.el: Use lexical-binding.

* test/lisp/progmodes/autoconf-tests.el: New file with tests for
autoconf.el.
---
 lisp/progmodes/autoconf.el            |  2 +-
 test/lisp/progmodes/autoconf-tests.el | 55 +++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 test/lisp/progmodes/autoconf-tests.el

diff --git a/lisp/progmodes/autoconf.el b/lisp/progmodes/autoconf.el
index 5d5811b47d1..d12bed7e27d 100644
--- a/lisp/progmodes/autoconf.el
+++ b/lisp/progmodes/autoconf.el
@@ -1,4 +1,4 @@
-;;; autoconf.el --- mode for editing Autoconf configure.ac files
+;;; autoconf.el --- mode for editing Autoconf configure.ac files  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2000-2020 Free Software Foundation, Inc.
 
diff --git a/test/lisp/progmodes/autoconf-tests.el b/test/lisp/progmodes/autoconf-tests.el
new file mode 100644
index 00000000000..63cf2889ee2
--- /dev/null
+++ b/test/lisp/progmodes/autoconf-tests.el
@@ -0,0 +1,55 @@
+;;; autoconf-tests.el --- Tests for autoconf.el      -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; Author: Simen Heggestøyl <simenheg@gmail.com>
+;; Keywords:
+
+;; 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 'autoconf)
+(require 'ert)
+
+(ert-deftest autoconf-tests-current-defun-function-define ()
+  (with-temp-buffer
+    (insert "AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])")
+    (goto-char (point-min))
+    (should-not (autoconf-current-defun-function))
+    (forward-char 10)
+    (should (equal (autoconf-current-defun-function) "HAVE_RSVG"))))
+
+(ert-deftest autoconf-tests-current-defun-function-subst ()
+  (with-temp-buffer
+    (insert "AC_SUBST(srcdir)")
+    (goto-char (point-min))
+    (should-not (autoconf-current-defun-function))
+    (forward-char 9)
+    (should (equal (autoconf-current-defun-function) "srcdir"))))
+
+(ert-deftest autoconf-tests-autoconf-mode-comment-syntax ()
+  (with-temp-buffer
+    (autoconf-mode)
+    (insert "dnl  Autoconf script for GNU Emacs")
+    (should (nth 4 (syntax-ppss)))))
+
+(provide 'autoconf-tests)
+;;; autoconf-tests.el ends here
-- 
2.39.2