[Plone-testing-team] Fwd: Anyone using custom exceptions to exit for loops? Can the feature be removed?

[Ed Manlove]

I'm forwarding this in case anyone from the Plone Testing Team has any 
comments about this change to Robot Framework. - Ed

-------- Original Message --------
Subject: 	Anyone using custom exceptions to exit for loops? Can the 
feature be removed?
Date: 	Fri, 03 May 2013 10:30:30 +0300
From: 	Pekka Klärck <peke at iki.fi>
Reply-To: 	pekka.klarck at gmail.com
To: 	robotframework-users <robotframework-users at googlegroups.com>



Hi all,

As I guess all you know, it is possible to create for loops in Robot
test data [1]. In addition to that, there is a special Exit For Loop
keyword [2] that can be used to exit the loop similarly as using break
statement in most programming languages.

Exit for loop functionality is implemented so that in addition to
using Exit For Loop keyword it is possible to use also custom
exceptions. It works so that any exception that has a special
ROBOT_EXIT_FOR_LOOP attribute with a true value will exit the loop. Is
anyone using custom exceptions for this purpose? Do you see any useful
use case for this feature in general?

If custom exceptions are not widely or at all used, we'll deprecate
the functionality in Robot Framework 2.8 and will remove it later. The
reason we would like to do it is that we are, after countless
requests, now going to implement also Continue For Loop [3] keyword,
and wouldn't like to use this unnecessary complex approach with it.
For consistency reasons we'd then also like to remove this feature
also from exit for loop functionality.

[1] http://robotframework.googlecode.com/hg/doc/userguide/RobotFrameworkUserGuide.html#for-loops
[2] http://robotframework.googlecode.com/hg/doc/userguide/RobotFrameworkUserGuide.html#exiting-for-loop
[3] http://code.google.com/p/robotframework/issues/detail?id=1125

Cheers,
     .peke
-- 
Agile Tester/Developer/Consultant :: http://eliga.fi
Lead Developer of Robot Framework :: http://robotframework.org

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