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Sat Nov 22 23:10:09 EST 2003 · https://mail.python.org/pipermail/python-dev/2003-November/040393.html

On Sat, 2003-11-22 at 07:59, Barry Warsaw wrote:
> On Sat, 2003-11-22 at 00:10, Jeremy Hylton wrote:
> 
> > > Did a cvs update about 30 minutes ago.  make test reports no errors. 
> > > Running again with "-u all -r" to see what happens.
> > 
> > Also looks good.  This was with a RH9 system.
> 
> Unfortunately, no so for me:
> 
> test_mimetypes
> test test_mimetypes failed -- Traceback (most recent call last):
>   File "/home/barry/projects/python23/Lib/test/test_mimetypes.py", line 52, in test_guess_all_types
>     eq(all, ['.bat', '.c', '.h', '.ksh', '.pl', '.txt'])
>   File "/home/barry/projects/python23/Lib/unittest.py", line 302, in failUnlessEqual
>     raise self.failureException, \
> AssertionError: ['.asc', '.bat', '.c', '.h', '.ksh', '.pl', '.txt'] != ['.bat', '.c', '.h', '.ksh', '.pl', '.txt']
> 
> But we've seen these before, right?  Doesn't some test interfere with
> globals in a way that screws mimetypes occasionally?

Yes and yes.  Use of mimetypes causes the module's init() function to be
run on a set of known files.  test_mimetypes calls init() after zapping
the list of knownfiles.  init() does not clear out existing global state
before re-initializing, which is why the test fails if mimetypes has
been used before test_mimetypes.

Jeremy

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