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;;; benchmark-tests.el --- Test suite for benchmark. -*- lexical-binding: t -*-
;; Copyright (C) 2017 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 'benchmark)
(require 'ert)
(ert-deftest benchmark-tests ()
(let (str t-long t-short)
(should (consp (benchmark-run nil (1+ 0))))
(should (consp (benchmark-run 1 (1+ 0))))
(should (stringp (benchmark nil (1+ 0))))
(should (stringp (benchmark 1 (1+ 0))))
(should (consp (benchmark-run-compiled nil (1+ 0))))
(should (consp (benchmark-run-compiled 1 (1+ 0))))
;; First test is heavier, must need longer time.
(should (> (car (benchmark-run nil
(let ((n 100000)) (while (> n 1) (setq n (1- n))))))
(car (benchmark-run nil (1+ 0)))))
(should (> (car (benchmark-run nil
(let ((n 100000)) (while (> n 1) (setq n (1- n))))))
(car (benchmark-run nil (1+ 0)))))
(should (> (car (benchmark-run-compiled nil
(let ((n 100000)) (while (> n 1) (setq n (1- n))))))
(car (benchmark-run-compiled nil (1+ 0)))))
(setq str (benchmark nil '(let ((n 100000)) (while (> n 1) (setq n (1- n))))))
(string-match "Elapsed time: \\([0-9.]+\\)" str)
(setq t-long (string-to-number (match-string 1 str)))
(setq str (benchmark nil '(1+ 0)))
(string-match "Elapsed time: \\([0-9.]+\\)" str)
(setq t-short (string-to-number (match-string 1 str)))
(should (> t-long t-short))))
;;; benchmark-tests.el ends here.
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