[issue23028] CEnvironmentVariableTests and PyEnvironmentVariableTests test the same implementation

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

CEnvironmentVariableTests and PyEnvironmentVariableTests are purposed to test C and Python implementations. But they are test the same implementation because execute test code in a subprocess and changes of sys.modules in current process don't affect a subprocess.

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components: Tests
messages: 232447
nosy: serhiy.storchaka
priority: normal
severity: normal
stage: needs patch
status: open
title: CEnvironmentVariableTests and PyEnvironmentVariableTests test the same implementation
type: behavior
versions: Python 2.7, Python 3.4, Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23028>
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