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;;; saveplace-tests.el --- Tests for saveplace.el  -*- lexical-binding:t -*-

;; Copyright (C) 2019-2024 Free Software Foundation, Inc.

;; Author: Stefan Kangas <stefankangas@gmail.com>

;; 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 'ert)
(require 'ert-x)
(require 'saveplace)

(ert-deftest saveplace-test-save-place-to-alist/dir ()
  (save-place-mode)
  (let* ((save-place-alist nil)
         (save-place-loaded t)
         (loc (ert-resource-directory)))
    (save-window-excursion
      (dired loc)
      (save-place-to-alist)
      (should (equal save-place-alist
                     `((,loc
                        (dired-filename . ,(concat loc "saveplace")))))))))

(ert-deftest saveplace-test-save-place-to-alist/file ()
  (save-place-mode)
  (ert-with-temp-file tmpfile
    (let* ((tmpfile (file-truename tmpfile))
           (save-place-alist nil)
           (save-place-loaded t)
           (loc tmpfile)
           (pos 4))
      (save-window-excursion
        (find-file loc)
        (insert "abc")                  ; must insert something
        (save-place-to-alist)
        (should (equal save-place-alist (list (cons tmpfile pos))))))))

(ert-deftest saveplace-test-forget-unreadable-files ()
  (save-place-mode)
  (ert-with-temp-file tmpfile
    :suffix "-saveplace"
    (let* ((save-place-loaded t)
           (alist-orig (list (cons "/this/file/does/not/exist" 10)
                             (cons tmpfile 1917)))
           (save-place-alist alist-orig))
      (save-place-forget-unreadable-files)
      (should (equal save-place-alist (cdr alist-orig))))))

(ert-deftest saveplace-test-place-alist-to-file ()
  (save-place-mode)
  (ert-with-temp-file tmpfile
    (ert-with-temp-file tmpfile2
      (let* ((save-place-file tmpfile)
             (save-place-alist (list (cons tmpfile2 99))))
        (save-place-alist-to-file)
        (setq save-place-alist nil)
        (save-window-excursion
          (find-file save-place-file)
          (unwind-protect
              (should (string-match tmpfile2 (buffer-string)))
            (kill-buffer)))))))

(ert-deftest saveplace-test-load-alist-from-file ()
  (save-place-mode)
  (let ((save-place-loaded nil)
        (save-place-file
         (ert-resource-file "saveplace"))
        (save-place-alist nil))
    (save-place-load-alist-from-file)
    (should (equal save-place-alist
                   '(("/home/skangas/.emacs.d/cache/recentf" . 1306)
                     ("/home/skangas/wip/emacs/"
                      (dired-filename . "/home/skangas/wip/emacs/COPYING")))))))

(provide 'saveplace-tests)
;;; saveplace-tests.el ends here