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emacs/test/lisp/calendar/calendar-tests.el
2026-01-01 12:54:34 +00:00

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EmacsLisp

;;; calendar-tests.el --- tests for calendar/calendar.el -*- lexical-binding:t -*-
;; Copyright (C) 2024-2026 Free Software Foundation, Inc.
;; Author: Richard Lawrence <rwl@recursewithless.net>
;; 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 'calendar)
(ert-deftest calendar-test-validity-predicate ()
(should (eq (calendar-date-is-valid-p nil) nil))
(should (eq (calendar-date-is-valid-p "invalid") nil))
(should (eq (calendar-date-is-valid-p (list 1 2)) nil))
(should (eq (calendar-date-is-valid-p (list 5 1 2025)) t)))
(ert-deftest calendar-test-date-in-calendar-mode-line ()
"Test whether the calendar mode line displays `date' correctly."
(save-window-excursion
(unwind-protect
(let* ((calendar-mode-line-format (list '(calendar-date-string date)))
(calendar-move-hook '(calendar-update-mode-line))
(today (calendar-current-date))
(month (calendar-extract-month today))
(year (calendar-extract-year today))
(cursor-date (calendar-gregorian-from-absolute
(1+ (calendar-absolute-from-gregorian today)))))
(calendar)
(should (equal (string-trim mode-line-format)
(calendar-date-string today)))
(calendar-forward-day 1)
(should (equal (string-trim mode-line-format)
(calendar-date-string cursor-date)))
(calendar-goto-today)
(should (equal (string-trim mode-line-format)
(calendar-date-string today)))
(calendar-cursor-to-visible-date cursor-date)
(calendar-redraw)
(should (equal (string-trim mode-line-format)
(calendar-date-string cursor-date)))
(calendar-cursor-to-visible-date cursor-date)
(calendar-scroll-left)
(calendar-other-month month year)
(should (equal (string-trim mode-line-format)
(calendar-date-string cursor-date))))
(kill-buffer calendar-buffer))))
(provide 'calendar-tests)
;;; calendar-tests.el ends here