[New-bugs-announce] [issue25695] test___all__ and test_support alter execution environment

[Arfrever Frehtes Taifersar Arahesis]

New submission from Arfrever Frehtes Taifersar Arahesis:

test___all__ and test_support alter execution environment.
Problem seems to be present only in Python 3.6.

$ python3.5 -m test test___all__ test_support
[1/2] test___all__
[2/2] test_support
All 2 tests OK.
$ python3.6 -m test test___all__ test_support
[1/2] test___all__
Warning -- files was modified by test___all__
[2/2] test_support
Warning -- files was modified by test_support
2 tests altered the execution environment:
    test___all__ test_support


When running these test files separately, problem is only present for test___all__:

$ python3.5 -m test test___all__
[1/1] test___all__
1 test OK.
$ python3.6 -m test test___all__
[1/1] test___all__
Warning -- files was modified by test___all__
1 test altered the execution environment:
    test___all__
$ python3.5 -m test test_support
[1/1] test_support
1 test OK.
$ python3.6 -m test test_support
[1/1] test_support
1 test OK.

----------
components: Tests
messages: 255088
nosy: Arfrever, ezio.melotti, haypo
priority: normal
severity: normal
status: open
title: test___all__ and test_support alter execution environment
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25695>
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