From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: How to debug functions depending on (current-time)? Date: Wed, 15 Jul 2015 22:47:18 +0200 Organization: Informatimago Message-ID: <87wpy1kv1l.fsf@kuiper.lan.informatimago.com> References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1436993431 4221 80.91.229.3 (15 Jul 2015 20:50:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 15 Jul 2015 20:50:31 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Jul 15 22:50:27 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZFTdI-0007kn-S4 for geh-help-gnu-emacs@m.gmane.org; Wed, 15 Jul 2015 22:50:25 +0200 Original-Received: from localhost ([::1]:37449 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZFTdI-0006Ww-3m for geh-help-gnu-emacs@m.gmane.org; Wed, 15 Jul 2015 16:50:24 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 28 Original-X-Trace: individual.net PiQ9pvaY3jGygAelbhuIgwecGasSGD08pEqJD47xhSYx4in6p+ Cancel-Lock: sha1:M2NkYTM1Yjg0ZjNjMTJiZjdlY2Y0NTBlZDdjMDVmNGM3MzkzNWUyMA== sha1:k72lfDelVkOm2RaJxe8+eVY6NvQ= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:213451 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:105736 Archived-At: Marcin Borkowski writes: > Hi all, > > I have a bunch of functions depending on (current-time), and I'm > wondering how to test/debug them. Is it safe to (temporarily) redefine > `current-time'? Maybe it's better to do that in a separate Emacs > instance? I could of course change their source code for the time of > debugging, but this still lefts the problem of testing (esp. automatic > testing) open. Any problem in programming can be solved by one more level of indirection. (defvar *my-current-time-function* 'current-time) (defun my-current-time-function () (funcall *my-current-time-function*)) (defvar *test-time* 0) (when testing (let ((*my-current-time-function* (lambda () (incf *test-time*)))) (test))) -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk