[Python-Dev] fixing tests on windows (original) (raw)

Neal Norwitz nnorwitz at gmail.com
Tue Apr 1 08:42:36 CEST 2008

The Windows buildbots are still failing because some tests keep files opened. This causes subsequent tests which use the same file to fail.

Here is a recent run which had a failure early on: http://www.python.org/dev/buildbot/stable/x86%20XP-3%20trunk/builds/1209/step-test/0

I'm assuming the first failure (test_bufio) was due to an open file. (Can't tell, no error msg.) That means the problem was in that test or an earlier test. The only earlier tests are:

test_import test_sys test_descr test_xdrlib test_urllibnet test_binhex test_strptime test_importhooks test_copy test_hmac test_genericpath test_complex test_timeout test_quopri test_marshal test_zipfile test_mutants test_csv test_ucn test_hash test_wsgiref test_mmap test_ftplib test_pickletools test_codecmaps_cn

Of those tests, only some of them reference TESTFN which is the probable file:

test_import 22 test_descr 3 test_urllibnet 2 test_binhex 2 test_genericpath 44 test_complex 3 test_marshal 33 test_zipfile 136 test_mutants 7 test_mmap 32

I inspected test_mmap which had been modified somewhat recently and tried to fix a few things. I'm not sure I helped and there are probably more problems lurking.

This issue may not be noticed in the default test run. It definitely occurs when the tests are run in a random order as they are on the buildbots. Try running: ./python.exe ./Lib/test/regrtest.py -r

That should help provoke more errors.

As always, patches are greatly appreciated.

Cheers, n

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