test/automated/textprop-tests.el

   1 ;;; textprop-tests.el --- Test suite for text properties.
   2
   3 ;; Copyright (C) 2015 Free Software Foundation, Inc.
   4
   5 ;; Author: Wolfgang Jenkner <wjenkner@inode.at>
   6 ;; Keywords: internal
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Code:
  24
  25 (require 'ert)
  26
  27 (ert-deftest textprop-tests-font-lock--remove-face-from-text-property ()
  28   "Test `font-lock--remove-face-from-text-property'."
  29   (let* ((string "foobar")
  30          (stack (list string))
  31          (faces '(bold (:foreground "red") underline)))
  32     ;; Build each string in `stack' by adding a face to the previous
  33     ;; string.
  34     (let ((faces (reverse faces)))
  35       (push (copy-sequence (car stack)) stack)
  36       (put-text-property 0 3 'font-lock-face (pop faces) (car stack))
  37       (push (copy-sequence (car stack)) stack)
  38       (put-text-property 3 6 'font-lock-face (pop faces) (car stack))
  39       (push (copy-sequence (car stack)) stack)
  40       (font-lock-prepend-text-property 2 5
  41                                        'font-lock-face (pop faces) (car stack)))
  42     ;; Check that removing the corresponding face from each string
  43     ;; yields the previous string in `stack'.
  44     (while faces
  45       ;; (message "%S" (car stack))
  46       (should (equal-including-properties
  47                (progn
  48                  (font-lock--remove-face-from-text-property 0 6
  49                                                             'font-lock-face
  50                                                             (pop faces)
  51                                                             (car stack))
  52                  (pop stack))
  53                (car stack))))
  54     ;; Sanity check.
  55     ;; (message "%S" (car stack))
  56     (should (and (equal-including-properties (pop stack) string)
  57                  (null stack)))))