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;;; timer-tests.el --- tests for timers -*- lexical-binding:t -*-
;; Copyright (C) 2013-2019 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/>.
;;; Commentary:
;;; Code:
(ert-deftest timer-tests-sit-for ()
(let ((timer-ran nil)
;; Want sit-for behavior when interactive
(noninteractive nil))
(run-at-time '(0 0 0 0)
nil
(lambda () (setq timer-ran t)))
;; The test assumes run-at-time didn't take the liberty of firing
;; the timer, so assert the test's assumption
(should (not timer-ran))
(sit-for 0 t)
(should timer-ran)))
(ert-deftest timer-tests-debug-timer-check ()
;; This function exists only if --enable-checking.
(if (fboundp 'debug-timer-check)
(should (debug-timer-check)) t))
(ert-deftest timer-test-multiple-of-time ()
(should (time-equal-p
(timer-next-integral-multiple-of-time '(0 0 0 1) (1+ (ash 1 53)))
(list (ash 1 (- 53 16)) 1))))
(ert-deftest timer-next-integral-multiple-of-time-2 ()
"Test bug#33071."
(let* ((tc (current-time))
(delta-ticks 1000)
(hz 128000)
(tce (encode-time tc hz))
(tc+delta (time-add tce (cons delta-ticks hz)))
(tc+deltae (encode-time tc+delta hz))
(tc+delta-ticks (car tc+deltae))
(tc-nexte (cons (- tc+delta-ticks (% tc+delta-ticks delta-ticks)) hz))
(nt (timer-next-integral-multiple-of-time
tc (/ (float delta-ticks) hz)))
(nte (encode-time nt hz)))
(should (equal tc-nexte nte))))
(ert-deftest timer-next-integral-multiple-of-time-3 ()
"Test bug#33071."
(let ((nt (timer-next-integral-multiple-of-time '(32770 . 65539) 0.5)))
(should (time-equal-p 1 nt))))
;;; timer-tests.el ends here
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