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;;; font-lock-tests.el --- Test suite for font-lock. -*- lexical-binding: t -*-
;; Copyright (C) 2019-2021 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)
(ert-deftest font-lock-test-append-anonymous-face ()
"Ensure `font-lock-append-text-property' does not splice anonymous faces."
(with-temp-buffer
(insert "foo")
(add-text-properties 1 3 '(face italic))
(font-lock-append-text-property 1 3 'face '(:strike-through t))
(should (equal (get-text-property 1 'face (current-buffer))
'(italic (:strike-through t))))))
(ert-deftest font-lock-test-prepend-anonymous-face ()
"Ensure `font-lock-prepend-text-property' does not splice anonymous faces."
(with-temp-buffer
(insert "foo")
(add-text-properties 1 3 '(face italic))
(font-lock-prepend-text-property 1 3 'face '(:strike-through t))
(should (equal (get-text-property 1 'face (current-buffer))
'((:strike-through t) italic)))))
;; font-lock-tests.el ends here
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