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;;; time-date-tests.el --- tests for calendar/time-date.el -*- lexical-binding:t -*-
;; Copyright (C) 2019-2020 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)
(require 'time-date)
(ert-deftest test-leap-year ()
(should-not (date-leap-year-p 1999))
(should-not (date-leap-year-p 1900))
(should (date-leap-year-p 2000))
(should (date-leap-year-p 2004)))
(ert-deftest test-days-in-month ()
(should (= (date-days-in-month 2004 2) 29))
(should (= (date-days-in-month 2004 3) 31))
(should-not (= (date-days-in-month 1900 3) 28)))
(ert-deftest test-ordinal ()
(should (equal (date-ordinal-to-time 2008 271)
'(nil nil nil 27 9 2008 nil nil nil)))
(should (equal (date-ordinal-to-time 2008 1)
'(nil nil nil 1 1 2008 nil nil nil)))
(should (equal (date-ordinal-to-time 2008 32)
'(nil nil nil 1 2 2008 nil nil nil)))
(should (equal (date-ordinal-to-time 1981 095)
'(nil nil nil 5 4 1981 nil nil nil))))
(cl-defmethod mdec (&key second minute hour
day month year
dst zone)
(list second minute hour day month year nil dst zone))
(ert-deftest test-decoded-add ()
(let ((time '(12 15 16 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :year 1))
'(12 15 16 8 7 2020 1 t 7200)))
(should (equal (decoded-time-add time (mdec :year -2))
'(12 15 16 8 7 2017 1 t 7200)))
(should (equal (decoded-time-add time (mdec :month 1))
'(12 15 16 8 8 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :month 10))
'(12 15 16 8 5 2020 1 t 7200)))
(should (equal (decoded-time-add time (mdec :day 1))
'(12 15 16 9 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :day -1))
'(12 15 16 7 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :day 30))
'(12 15 16 7 8 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :day -365))
'(12 15 16 8 7 2018 1 t 7200)))
(should (equal (decoded-time-add time (mdec :day 365))
'(12 15 16 7 7 2020 1 t 7200)))
;; 2020 is a leap year.
(should (equal (decoded-time-add time (mdec :day 366))
'(12 15 16 8 7 2020 1 t 7200)))
(should (equal (decoded-time-add time (mdec :second 1))
'(13 15 16 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :second -1))
'(11 15 16 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :second 61))
'(13 16 16 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :hour 1 :minute 2 :second 3))
'(15 17 17 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :hour 24))
'(12 15 16 9 7 2019 1 t 7200)))
))
(ert-deftest test-decoded-add-zone ()
(let ((time '(12 15 16 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :zone -3600))
'(12 15 15 8 7 2019 1 t 7200)))
(should (equal (decoded-time-add time (mdec :zone -7200))
'(12 15 14 8 7 2019 1 t 7200)))))
(ert-deftest test-time-since ()
(should (time-equal-p 0 (time-since nil))))
;;; time-date-tests.el ends here
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