What does the shadow window do? There's not much documentation there, aside 
from "XXX Remove"

On Thursday, May 17, 2018 at 9:29:28 AM UTC-5, Chris Norman wrote:
>
> Hi,
> I have never written tests for Pyglet, so please take whatever I say with 
> a pinch of sault. I do however know that there is an option for not having 
> the shadow window. I think it's pyglet.options['SHADOW_WINDOW'] = False.
>
> HTH,
>
> On Thu, May 17, 2018 at 3:21 PM, Paul Everitt <paulwe...@gmail.com 
> <javascript:>> wrote:
>
>> I'm a contributor to Arcade, the Python 3.6+ 2d game library. I'm 
>> converting the existing doctests to pytest and trying to introduce some 
>> faster unit testing. In particular, not firing up a GUI window on each test.
>>
>> I had hoped to make a MockWindow that I used to stub 
>> pyglet.window.BaseWindow. The challenge: this line:
>>
>> from pyglet.window import Window
>>
>> ...immediately triggers a GUI window. Here are the last three lines in 
>> pyglet.window.__init__.py:
>>
>> # XXX remove
>> # Create shadow window. (trickery is for circular import)
>> if not _is_pyglet_docgen:
>>     pyglet.window = sys.modules[__name__]
>>     gl._create_shadow_window()
>>
>>
>> The last line is done with non-import trickery that appears beyond the 
>> reach of mocking. Thus, I'm interested in some feedback:
>>
>> - Am I totally on the wrong path, and unit testing a method on a subclass 
>> of BaseWindow requires a window?
>>
>> - Should I refactor arcade.Window to subclass from something which 
>> subclasses BaseWindow, to give me a place to step in?
>>
>> - Does anybody have a pyglet application with tests that don't spawn 
>> windows?
>>
>> Thanks, and I confess that it is likely I am looking at this all wrong.
>>
>> --Paul
>>
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>
>
>
> -- 
>
> Take care,
>
> Chris Norman
>
>

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