New submission from STINNER Victor:
---
$ ./python -Wd -m test -j0 test_warnings
Run tests in parallel using 6 child processes
0:00:01 [1/1] test_warnings
(...)
Warning -- warnings.filters was modified by test_warnings
1 test altered the execution environment:
test_warnings
Total duration: 0:00:02
---
The problem are these two lines in test_warnings/__init__.py:
---
py_warnings = support.import_fresh_module('warnings', blocked=['_warnings'])
c_warnings = support.import_fresh_module('warnings', fresh=['_warnings'])
---
Each fresh "import warnings" calls _processoptions(sys.warnoptions) which can
change warning filters.
Attached patch saves/restores warnings.filter to fix the resource warning from
the test suite.
Note: the warning is not emited if tests are run sequentially (without the -jN
option).
----------
files: test_warnings.patch
keywords: patch
messages: 263291
nosy: haypo
priority: normal
severity: normal
status: open
title: imports in test_warnings changes warnings.filters
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file42449/test_warnings.patch
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26742>
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