[Python-3000] test_mmap.py and OSError

[Joe Gregorio]

I decided to try to tackle the unit tests failing on the py3k-struni
branch for mmap. It now passes all the unit tests but one, and
the problem is that I don't know what should be 'fixed'. The
code in the unit test is:

         finally:
            try:
                f.close()
            except OSError:
                pass

The problem is that the file is already closed and in Lib/io.py,
the close calls flush() and flush() raises
ValueError() if the file is already closed, but the
unit test is looking for OSError.

Should io.py raise OSError instead of ValueError?
Or should test_mmap.py be expecting ValueError?
Or is there something else that I'm completely missing?

[ The wisdom of choosing mmap as my first fiddling
  with Python internals can be debated later :) ]

   Thanks,
   -joe

-- 
Joe Gregorio        http://bitworking.org