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Wed Sep 24 08:10:51 EDT 2003 · http://mail.python.org/pipermail/python-dev/2003-September/038264.html

On Wed, Sep 24, 2003 at 07:53:26AM -0400, Barry Warsaw wrote:
> I pulled down rc2 and ran the tests randomly on RH9, with "-u all -r". 
> I see that test_mimetypes failed unexpectedly:
> 
> test test_mimetypes failed -- Traceback (most recent call last):
>   File "/tmp/Python-2.3.1/Lib/test/test_mimetypes.py", line 52, in
> test_guess_all_types
>     eq(all, ['.bat', '.c', '.h', '.ksh', '.pl', '.txt'])
>   File "/tmp/Python-2.3.1/Lib/unittest.py", line 302, in failUnlessEqual
>     raise self.failureException, \
> AssertionError: ['.asc', '.bat', '.c', '.h', '.ksh', '.pl', '.txt'] !=
> ['.bat', '.c', '.h', '.ksh', '.pl', '.txt']

This order fails:
[jepler at parrot Lib]$ ../python test/regrtest.py test_urllib2 test_mimetypes

This order doesn't:
[jepler at parrot Lib]$ ../python test/regrtest.py test_mimetypes test_urllib2

urllib2 calls mimetypes.guess_type without zeroing out
mimetypes.knownfiles.  I think this is the cause.  Adding this patch
makes both orders pass.

Perhaps a better way to fix it would be to test for a superset in
test_mimetypes.  assert set(all) >= set('.bat', ...)

--- test_urllib2.py.orig	2003-09-24 07:08:28.000000000 -0500
+++ test_urllib2.py	2003-09-24 07:07:31.000000000 -0500
@@ -11,6 +11,10 @@
 else:
     verify(0)
 
+import mimetypes
+mimetypes.knownfiles = []
+mimetypes.inited = False
+
 # XXX Name hacking to get this to work on Windows.
 fname = os.path.abspath(urllib2.__file__).replace('\\', '/')
 if fname[1:2] == ":":



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