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| | ;;; textprop-tests.el --- Test suite for text properties.
;; Copyright (C) 2015 Free Software Foundation, Inc.
;; Author: Wolfgang Jenkner <wjenkner@inode.at>
;; Keywords: internal
;; 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 <http://www.gnu.org/licenses/>.
;;; Code:
(require 'ert)
(ert-deftest textprop-tests-remove-single-text-property ()
"Test `remove-single-text-property'."
(let* ((string "foobar")
(stack (list string))
(faces '(bold (:foreground "red") underline)))
;; Build each string in `stack' by adding a face to the previous
;; string.
(let ((faces (reverse faces)))
(push (copy-sequence (car stack)) stack)
(put-text-property 0 3 'font-lock-face (pop faces) (car stack))
(push (copy-sequence (car stack)) stack)
(put-text-property 3 6 'font-lock-face (pop faces) (car stack))
(push (copy-sequence (car stack)) stack)
(font-lock-prepend-text-property 2 5
'font-lock-face (pop faces) (car stack)))
;; Check that removing the corresponding face from each string
;; yields the previous string in `stack'.
(while faces
;; (message "%S" (car stack))
(should (equal-including-properties
(progn
(remove-single-text-property 0 6 'font-lock-face (pop faces)
(car stack))
(pop stack))
(car stack))))
;; Sanity check.
;; (message "%S" (car stack))
(should (and (equal-including-properties (pop stack) string)
(null stack)))))
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