Mailman 3 May 2002 - Twisted

[Twisted-Python] Timeouts for Deferreds?
by Andrew Bennetts 03 May '02

03 May '02

I just thought of another feature I would find handy in Deferreds, although perhaps this feature belongs somewhere else... Deferred.timeout(secs): If I am uncalled for secs seconds after being armed, call my errback automatically. This way callers can control how long they will wait for a Deferred to do something. Methods returns Deferreds could also set a reasonable default with .timeout that the caller can override by calling .timeout again. A timeout of None would, of course, mean never timeout. I can see this as being useful in many ways. The biggest problem with it is I'm not sure what should happen when you try to call a Deferred after it has timed out (e.g. your CGI script took 5 minutes, timed out and thus called errback, but did eventually finish). I don't think calling callback/errback should raise an AlreadyCalledException, because the timeout may have been set by a client of a library that doesn't expect timeouts. On the other hand, I don't like the idea of things failing silently. The ideal situation is, of course, to make sure that the timeout event always cancels whatever it is that would later call callback/errback, but I don't like making it a requirement that this must happen (plus it probably means adding a "timeback" method, or something). Perhaps a TimeoutDeferred subclass? But then it's not generally useful anymore, unless a method explicitly returns TimeoutDeferred and not Deferred. Still, encouraging people to use hard-coded arbitrary timeouts everywhere probably isn't a good idea either. Thoughts, anyone? (Actual implementation details left as an exercise for the reader... actually, I'm happy to do it if people want this). -Andrew.

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[Twisted-Python] [Fwd: webunit is better (i think :-)]
by Itamar Shtull-Trauring 02 May '02

02 May '02

Luc suggests webunit. And since the author is the guy who wrote pyunit, it probably integrates nicely. -------- Original Message -------- Subject: webunit is better (i think :-) Date: Thu, 02 May 2002 09:03:51 +0200 From: Luc Stepniewski Have you looked at the webunit tool? It seems much better, the included httpsession module works so good, it even memorizes the cookies set during a path traversal (for example, first logging, the doing some action). It's on http://webunit.sourceforge.net/ Luc

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[Twisted-Python] [ANN] Puffin 0.8.8 Released -- Web App Regression Testing Just Got Easier
by Itamar Shtull-Trauring 01 May '02

01 May '02

Maybe we should this for testing twisted.web? <http://mail.python.org/pipermail/python-announce-list/2002-April/001420.html>

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