Re: [Pyobjc-dev] doctest and PyObjC

[Ronald O. <ron...@ma...>]

I’ve just pushed a fix to the repository. I’m hoping to push out a new release next weekend.

There is no workaround for the issue other than patching PyObjC: In Lib/objc/_convenience.py remove the @register decorator from makeBundleForClass. I had hoped that there’d be a cleaner workaround, but that workaround caused a hard crash (also fixed in the repository).

Ronald



> On 28 Jan 2018, at 19:28, Ronald Oussoren <ron...@ma...> wrote:
> 
> 
> 
>> On 6 Jan 2018, at 20:39, Just van Rossum <jus...@gm...> wrote:
>> 
>> Hello,
>> 
>> I’m having trouble with integrating PyObjC and doctest. Whenever a module contains an NSObject subclass, the doctest test discovery code fails like so:
>> 
>> 
>> Traceback (most recent call last):
>> File "Lib/typemachine/ui/appDelegate.py", line 54, in <module>
>>   doctest.testmod()
>> File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/doctest.py", line 1950, in testmod
>>   for test in finder.find(m, name, globs=globs, extraglobs=extraglobs):
>> File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/doctest.py", line 933, in find
>>   self._find(tests, obj, name, module, source_lines, globs, {})
>> File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/doctest.py", line 996, in _find
>>   globs, seen)
>> File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/doctest.py", line 1027, in _find
>>   self._from_module(module, val)):
>> File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/doctest.py", line 954, in _from_module
>>   obj_mod = object.__objclass__.__module__
>> AttributeError: 'NoneType' object has no attribute ‘__module__'
>> 
>> 
>> Simplest way to reproduce:
>> 
>> =========
>> from Foundation import NSObject
>> 
>> class Foo(NSObject):
>>   pass
>> 
>> import doctest
>> doctest.testmod()
>> =========
>> 
>> I can’t judge whether this is a bug in doctest or in PyObjC.
>> 
>> Is there a workaround?
>> 
>> My problem is not so much that I can’t use doctest in NSObject subclasses, but rather that test discovery fails in general in the vicinity of PyObjC code. For example, I can’t use pytest’s test discovery at all: it simply fails any module that contains an NSObject subclass.
>> 
>> Thanks for any insights,
> 
> This appears to be a bug. I don’t have a workaround yet, but am investigating.
> 
> Ronald
> 
> 
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