[Pyobjc-dev] Dubious unittest

[Ronald O. <ous...@ci...>]

Background: objc.classAddMethods can be used to add new methods to an 
Objective-C class (like categories in Objective-C). One of the 
unittests does something like this:

# Start of code
class NewMethods:
	def method1(self):
		pass

objc.classAddMethods(NSObject, [ NewMethods.method1 ])
# End of code


This unittests fails because of an exception when trying to use 
NSObject.method1. This raises and exception because NSObject.method1 is 
actually an method of NewMethods and self is therefore of the wrong 
type. The same effect can be observed like this:

# Start of code
class C1:
	def printme(self): print "me"

class C2: pass

C2.printme = C1.printme

c = C2()
c.printme()
# End of code

It would be possible to change the code so that the unittest would 
pass, but given the behaviour of normal class I'd prefer to declare the 
current behaviour correct.

Ronald