[pypy-dev] Re: Objects and types in the stdobjspace

[Michael Hudson]

roccomoretti at netscape.net (Rocco Moretti) writes:

> Michael Hudson <mwh at python.net> wrote:
>
>>I've had another idea: give unittest_w.TestCase_w a metaclass that
>>looks for methods called 'test_app_whatever' and arrange for such
>>methods to be called as objectspace methods.
>
> Sounds like a wonderful solution, but I have to confess that my eyes glaze 
> over when trying to understand metaclasses - I probably should put more of 
> an effort into learning about them one of these days...

I should probably be worried at the willingness with which I now reach
for them.

> Is using metaclasses really nessasary?

Heh.  No, probably not.

> Before I realized that metaclasses were involved, I first thought of
> using a special subclass of TestCase - probably by overloading
> TestCase.__call__() to appropriately wrap the function before it is
> run.

Yes, that would probably work.  It would also mean that we wouldn't
have to make testsupport.TestCase new-style which would mean we
wouldn't have to steal 2.3's TestLoader, which would be a good thing.

> If we can use the subclass approach, we could potentially simplify
> things by having two seperate TestCase subclasses, one for
> interpreter level and one for application level tests.

Yes, that would be one approach.

> This would potentially require splitting of a single test case into
> two, one each for application and interpreter levels, whereas your
> implementation appears to allow both types of tests in the same
> class definition.

Yes it does.  The subclassing approach could allow that, but doesn't
have to.  I don't feel that splitting the tests up would necessarily
be a bad thing, either.

> But feel free to ignore this as I haven't tried putting it into code
> and have no clue what the problems with it may be.

No, you've probably done a sensible job of restraining my obfuscatory
tendencies!

Cheers,
M.

-- 
  Or here's an even simpler indicator of how much C++ sucks: Print
  out the C++ Public Review Document.  Have someone  hold it about
  three feet  above your head and then drop it.  Thus  you will be
  enlightened.                                        -- Thant Tessman