Parametrization being a bit too broad

[Aaron Bentley]

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On 11-05-18 06:39 AM, John Arbash Meinel wrote:
> So one idea was for tests do define the actual function that they are
> testing. (Such as Repository.apply_inventory_delta). And then the
> parametrizer would create the full width of tests, but can keep track of
> a set of functions it has tested. Like:
> 
>  if func in self._tested_funcs:
>   self._tested_funcs.add(func)
>   run_test()
>  else:
>   # this version of the test has already been run.
>   pass

It seems nice, but I think it could easily miss cases where func
delegated responsibility to private methods that were overridden, and so
behaved very differently.

One solution would be to test the private methods, but some subclasses
could override func, rather than providing the private methods.  It just
seems hard to get right on an automatic basis.

Aaron
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