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;;; m4-mode-tests.el --- tests for m4-mode.el -*- lexical-binding: t -*-
;; Copyright (C) 2025 Free Software Foundation, Inc.
;; 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/>.
;;; Code:
(require 'ert)
(require 'ert-font-lock)
(require 'm4-mode)
(ert-deftest m4-current-defun-name ()
"Test `m4-current-defun-name' behavior."
(with-temp-buffer
(m4-mode)
(insert "define(`a', `')")
(should (equal (m4-current-defun-name) "a"))
;; Not at toplevel.
(insert "define(`b', `')")
(should (equal (m4-current-defun-name) "a"))
(insert "\nm4_define(`c', `')")
(should (equal (m4-current-defun-name) "c"))
(insert "\nAC_DEFUN([d], [])")
(should (equal (m4-current-defun-name) "d"))
(insert "\nAU_DEFUN([e], [])")
(should (equal (m4-current-defun-name) "e"))))
(ert-deftest m4-mode-comment-syntax ()
"Test `m4-mode' comment syntax."
(with-temp-buffer
(m4-mode)
(insert "# comment")
(should (eq (syntax-ppss-context (syntax-ppss)) 'comment))
(insert ?\n)
(should-not (syntax-ppss-context (syntax-ppss)))))
(ert-font-lock-deftest-file m4-mode-font-lock
"Test `m4-mode' font lock."
m4-mode "font-lock.m4")
;;; m4-mode-tests.el ends here
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